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Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
1 CVE Mallory has correlated with this family across public research and vendor advisories. Each row links to the full Mallory page for that vulnerability.
It is our hypothesis that these legitimate compromised sites were all compromised sometime after early November using CVE-2015-7501 [7,8] and publicly available exploit code [9].
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
While monitoring the Rekaf C2 we observed over two thousand unique infections.
8 distinct techniques documented for this family, organized by ATT&CK tactic.
Prior to submitting the collected information to C2... Rekaf HTTP POST C2 Beacon. If the server responds with an encoded string 'Login Server Success' then the Rekaf bot will continue to perform HTTP GET requests to the server until it receives a command.
In one instance related to this cluster of activity, we observed Bergard receive instructions from its C2 to retrieve a PNG file containing an encoded PlugX payload... Rekaf supported commands... upload: Download file from C2 ... update: Retrieve an updated payload.
9 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Bassos-associated Trojan executed through DLL search-order hijacking using a signed iefix.exe and malicious dbgeng.dll. It collects and exfiltrates system information, encodes communications using a MAC-address-derived byte, polls for commands, maintains debug logs, and can drop embedded executables. Monitoring revealed more than 2,000 unique infections. Bassos attribution to C0d0s0 remains tentative.
Rekaf is a trojan/backdoor delivered in the Bassos campaign. It uses DLL search order hijacking for execution, collects host information, communicates over HTTP with encoded beacons, supports file transfer, command execution, and payload updates, and contains embedded PE files for possible deployment.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.