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GCMAN is a financially motivated cybercriminal threat actor associated with intrusions against the banking sector. The group is widely discussed alongside Carbanak because of overlapping tradecraft and post-compromise techniques. GCMAN has been linked to lateral movement over SSH and the use of PuTTY-family tooling, including PuTTY and Plink, to move within victim environments and maintain remote access. Reported GCMAN tradecraft emphasizes living-off-the-land and low-attribution operations. Activity associated with the group has included use of PowerShell payloads stored in the Windows registry, in-memory Meterpreter execution, administrative credential theft with Mimikatz, abuse of service-account credentials, malicious service creation, and traffic tunneling or port forwarding through native Windows utilities. These techniques support post-exploitation objectives such as persistence, remote administration, credential access, and movement between internal systems while minimizing forensic artifacts on disk. GCMAN is known for targeting financial institutions, particularly banks, and for using common administrative and offensive tools rather than bespoke malware families in every stage of an intrusion. This reliance on legitimate utilities and broadly available frameworks complicates attribution and can make the group difficult to distinguish from adjacent financially motivated clusters, especially Carbanak. No high-confidence nation-state attribution is established in the supplied facts.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Attributed origin per open-source reporting.
6 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced as a threat actor associated with SSH-based lateral movement activity involving utilities such as PuTTY suite tools.
Referenced as a threat actor associated with SSH-based lateral movement / remote access activity involving sshd_operns on network infrastructure.
Listed as an associated threat actor for activity involving SSH lateral movement, account creation for persistence, and use of valid accounts on Cisco IOS devices.
Referenced as a threat actor associated with SSH lateral movement and use of SSH on non-standard ports for remote access or persistence.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.