Threats Feed

APT33, an Iranian threat group active since 2013, targets multiple countries and sectors, primarily focusing on Saudi Arabia and the United States. The group employs spear phishing with malicious attachments and links, watering hole attacks, and uses both custom and commodity malware, including the Shamoon data-wiper. They exploit known vulnerabilities and leverage stolen credentials to gain access. Key targets include government, aerospace, petrochemical, engineering, finance, and telecom industries. APT33’s infrastructure includes domain masquerading and compromised servers. Recent activities include targeting cloud infrastructure and using spoofed domains to distribute malware.

The Cybersecurity and Infrastructure Security Agency (CISA), FBI, and Cyber National Mission Force (CNMF) identified multiple APT actors exploiting vulnerabilities in an Aeronautical Sector organization as early as January 2023. The actors targeted a public-facing application (Zoho ManageEngine ServiceDesk Plus) and the organization’s firewall device, exploiting CVE-2022-47966 and CVE-2022-42475. They gained unauthorized access, established persistence, moved laterally, and engaged in defense evasion by deleting logs. Although the attackers achieved extensive network enumeration and credential access, the report didn't confirm any data exfiltration.

In April 2022, CISA detected Iranian government-sponsored APT activity compromising an FCEB organization's network via the Log4Shell vulnerability. Initial exploitation targeted an unpatched VMware Horizon server, later spreading to the domain controller. The threat actors utilized PowerShell commands, disabled Windows Defender, and established persistence through scheduled tasks. Tools like Mimikatz and Ngrok were deployed for credential harvesting and C2 communication. Despite attempts to dump the LSASS process, additional anti-virus measures thwarted this activity. Lateral movement was observed, as were activities aimed at credential and account manipulation.

In April 2022, Iranian government-sponsored actors exploited the Log4Shell vulnerability in VMware Horizon servers, targeting a Federal Civilian Executive Branch (FCEB) organization. They installed XMRig crypto mining malware and used tools like Mimikatz and Ngrok for credential theft and tunneling. The attack involved disabling Windows Defender, downloading malicious files, hiding artifacts, and creating scheduled tasks for persistence. The campaign highlights advanced tactics in disabling security controls and maintaining persistent access. The targeted sector was the US government.

The Fully Undetectable (FUD) PowerShell backdoor report details a sophisticated attack beginning with a malicious Word document ("Apply Form.docm") used in a LinkedIn-based spearphishing campaign originating from Jordan. The document contains a macro that launches a PowerShell script, creating a scheduled task to execute further malicious actions. The backdoor communicates with its C2 server, executing various commands such as process list exfiltration, user enumeration, and Active Directory exploration. SafeBreach identified operational security mistakes allowing decryption of the C2 commands. The campaign, involving PowerShell scripts and scheduled tasks, targets systems for data exfiltration and potential lateral movement.

Iranian Islamic Revolutionary Guard Corps-affiliated cyber actors exploited vulnerabilities in Fortinet FortiOS, Microsoft Exchange, and VMware Horizon applications since early 2021, targeting entities in the U.S., U.K., and Australia. These vulnerabilities, including CVE-2018-13379, CVE-2020-12812, CVE-2019-5591, and several ProxyShell issues, were used for initial access, ransom operations, and data exfiltration. Activities include encrypting data for ransom, extortion operations, and crypto-mining, impacting sectors like law enforcement, transportation, municipal government, and aerospace. The actors leveraged tools like FRP, Plink, RDP, and BitLocker for command and control, lateral movement, and encryption.

SafeBreach Labs has discovered CodeRAT, a new remote access trojan (RAT) targeting Farsi-speaking software developers with capabilities ranging from espionage to data exfiltration. Delivered via a Word document that exploits Microsoft DDE, CodeRAT monitors activity in various applications, particularly those related to social networking and development tools. Uniquely, it uses public file upload APIs and Telegram groups for command and control, bypassing typical C2 infrastructure. The malware supports 50 commands, including clipboard capture, process control and file upload. The CodeRAT developer released the source code on GitHub after it was discovered by researchers.

The Iranian SiameseKitten (Lyceum) group deployed new malware masquerading as an Adobe update, communicating with a command and control server. The malware includes a reverse shell and employs fake Microsoft certificates, echoing tactics seen with other Iranian groups like Phosphorus. The attack involved a lure PDF related to drone attacks in Iran, aiming to establish persistence via the Startup folder. The parent file and reverse shell were downloaded from domains registered on June 6th, highlighting the group's continued use of sophisticated detection avoidance techniques.

POLONIUM, suspected to be coordinating with Iran's Ministry of Intelligence and Security, is actively targeting Israeli organizations across multiple sectors such as critical manufacturing, IT, and defense. The group exploits supply chain vulnerabilities by compromising IT companies to further target downstream organizations like aviation companies and law firms. TTPs include custom implants like CreepyDrive that use cloud services for C2 and data exfiltration. MSTIC also notes overlap with Iranian groups MERCURY, CopyKittens, both in targeted victims and techniques like using AirVPN and OneDrive. Though unconfirmed, around 80% of victims were observed running Fortinet appliances, suggesting a potential CVE-2018-13379 exploitation.

Morphisec identified exploitation of a VMware Workspace ONE Access vulnerability, believed to be the work of an APT group, likely the Iranian-linked Rocket Kitten. The attack involved server-side template injection and execution of PowerShell commands via the Tomcat prunsrv.exe process application, leading to full remote code execution. The attackers deployed a PowerShell stager that downloaded the PowerTrash Loader. The end payload was a Core Impact Agent. The tactics are known to enable ransomware or coin miners deployment, evading typical defenses like antivirus and endpoint detection and response.

The Iranian APT group Moses Staff deployed a new, previously undocumented Remote Access Trojan (RAT) called StrifeWater for its cyber-espionage and disruption operations. The StrifeWater RAT has been used in initial attack stages, demonstrating various capabilities like listing system files, executing system commands, creating persistence, and downloading updates. Post-infection, it's replaced with ransomware not for financial gain but to disrupt operations and inflict system damage. Victims of these attacks span globally across countries like Israel, Italy, India, Germany, Chile, Turkey, UAE, and the US.

SafeBreach Labs discovered an Iranian threat actor exploiting the MSHTML vulnerability (CVE-2021-40444) to infect Farsi-speaking victims with the PowerShortShell stealer via spear phishing. The attack, first reported in September 2021, involved a malicious Word document connecting to a server, downloading a DLL, and executing a PowerShell script. This script collected data, including screenshots and files, and exfiltrated it to the attacker's server. The campaign targeted Iranians abroad, particularly in the United States, suggesting ties to Iran's Islamic regime.

Some Iranian government-sponsored APT groups have exploited vulnerabilities in Microsoft Exchange servers and Fortinet devices since March 2021. These actors broadly targeted critical infrastructure sectors in the US, including Transportation and Healthcare and Public Health, as well as Australian organizations. The APT group focused more on exploiting known vulnerabilities rather than specific sectors, using the gained access for ransomware deployment, data exfiltration, and extortion. Several tactics, techniques, and tools were utilized, including creating new user accounts and modifying Task Scheduler.

The Lyceum group (also known as Hexane) is a cyber threat actor focused on the telecommunications, energy and aviation sectors, particularly targeting high-profile organisations in Tunisia. Active since 2018, Lyceum has recently replaced its .NET-based malware with new C++ backdoors and PowerShell scripts to evade detection. The group continues to rely on DNS tunneling for command and control (C2) and uses tools for system reconnaissance, credential theft and keylogging. Lyceum also uses spoofed domains to disguise its activities, demonstrating an adaptive approach to persistent targeting of critical infrastructure.

The Iranian APT group MalKamak has been targeting aerospace and telecommunications companies in the Middle East since at least 2018, with additional victims in the US, Russia and Europe. The group uses ShellClient, a newly discovered remote access trojan (RAT), to conduct highly targeted cyberattacks. ShellClient uses Dropbox, a popular cloud-based service, for command and control (C2) operations, replacing the group's previous C2 infrastructure.

Operation GhostShell is a cyber espionage campaign targeting aerospace and telecommunications companies, primarily in the Middle East, with victims in the U.S., Russia and Europe. The operation, carried out by the Iranian group MalKamak, uses a stealthy, evolving remote access trojan (RAT) called ShellClient, which has been in development since 2018. ShellClient evades detection through masquerading, AES encryption and WMI-based reconnaissance. The attackers used tools such as PAExec for lateral movement and lsa.exe for credential dumping. Data exfiltration was facilitated by using WinRar to compress stolen information before sending it via Dropbox.

The Iranian APT group Siamesekitten (Lyceum/Hexane) launched targeted cyberattacks on Israeli IT and technology firms in 2021 using advanced social engineering and supply chain tactics. The campaign impersonated HR personnel and organizations via phishing websites and LinkedIn profiles to distribute malware such as Milan and its successor Shark. Victims were infected with DanBot RAT through DNS tunneling and HTTPS C2 communication. The group also exploited legitimate tools like UltraVNC for remote access. Known for prior attacks on oil, gas, and telecom sectors in the Middle East and Africa, Siamesekitten’s recent focus highlights its shift to Israeli targets for espionage and data theft.

APT-C-50's Domestic Kitten surveillance operation, linked to the Iranian government, targets over 1,200 Iranian citizens including dissidents, opposition forces, and minorities. Since 2017, ten campaigns delivered the FurBall malware via Iranian blogs, Telegram channels, and SMS links. FurBall collects device data, call logs, SMS messages, and media files, tracking victims' activities. It leverages commercially available parental control software, KidLogger, for its operations. This extensive surveillance continues with four active campaigns as of November 2020.

The joint advisory from CISA and the FBI reveals that an Iranian advanced persistent threat (APT) actor targeted U.S. state websites, specifically election websites, in an attempt to influence the 2020 presidential election. The actor employed methods like scanning with Acunetix, exploiting public-facing applications, and using VPN services to masquerade their operations. The APT also attempted to access and distribute U.S. voter registration data, which was subsequently used in disinformation campaigns misleadingly attributed to domestic sources. The operations spanned from September 20 to October 17, 2020, aiming to compromise election infrastructure and gather sensitive information.

Iranian APTs are suspected of attempting to disrupt the U.S. electoral process to undermine public confidence and create discord among voters. These activities have included the creation of fictitious and spoofed media sites to distribute misinformation about voter issues, utilizing voter-registration data, and spreading anti-American sentiments. The APT groups have exploited critical vulnerabilities such as CVE-2020-5902 and CVE-2017-9248, impacting VPNs and content management systems, to conduct distributed denial-of-service (DDoS) attacks, SQL injection attacks, spear-phishing campaigns, website defacements, and disinformation campaigns.

The Lyceum APT targets the oil, gas and telecommunications sectors in the Middle East, focusing on credential theft and network infiltration through a multi-stage attack chain. The initial infection involves malicious Microsoft Office documents that deploy DanDrop, a VBA-based malware dropper that installs DanBot, a remote access Trojan used for ongoing control. The group also uses PowerShell scripts, including keyloggers and credential decryption tools, to gather sensitive data from Active Directory and RDCMan configurations. The sophisticated attack chain used by this cybercrime group highlights the ongoing threat to critical infrastructure in the Middle East.

Check Point Research uncovered an ongoing Iranian espionage campaign, Rampant Kitten, targeting Iranian expats and dissidents. The attackers used Windows infostealers to steal personal documents and access Telegram and KeePass accounts. They employed Android backdoors to intercept SMS-based 2FA codes and record audio, and also created Telegram phishing pages. The campaign's initial infection vector involved a malicious document exploiting external template loading. Key targets included anti-regime organizations and minority resistance groups such as AFALR and Azerbaijan National Resistance Organization. The malware utilized SOAP for communication and featured sophisticated persistence and data exfiltration techniques.

Pioneer Kitten, an Iran-based adversary active since 2017, targets North American and Israeli entities of intelligence interest, including technology, government, defense, and healthcare sectors. The group relies on exploiting vulnerabilities in VPNs and network appliances (e.g., CVE-2019-11510, CVE-2019-19781, CVE-2020-5902) for initial access, and uses open-source tools like Ngrok and SSHMinion for SSH tunneling and RDP for hands-on activity. Recently, PIONEER KITTEN was seen selling access to compromised networks on underground forums, indicating an attempt to diversify revenue streams.