m6699.exe
Hunt this family in your stack
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
Groups observed using it
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
The Golang malware m6699.exe uses the Yaegi framework to interpret at runtime encoded Golang source code stored within the compiled binary, executing the code as if compiled.
Techniques & procedures
6 distinct techniques documented for this family, organized by ATT&CK tactic.
Privilege Escalation
1 techniqueStealth
4 techniques“uses encoding and encryption to hinder static analysis… Base-64 decodes and then decrypts the shellcode… AES CBC…” / “double Base64-encoded string”
“allocat[es] executable… heap memory… places the first-stage shellcode… and executes it.” / “ctypes… load the shellcode in memory and start a new thread”
“The malware first Base-64 decodes and then decrypts the shellcode.” / “decodes before passing… for execution.”
“uses the Yaegi framework to interpret at runtime encoded Golang source code stored within the compiled binary…”
Command and Control
2 techniques“shellcode connects to a C2 server using the Windows Sockets 2 library… receives… second-stage shellcode and executes it.”
“deployment of malware and tools hosted at attacker-controlled infrastructure.” / staging URLs for py.exe, m6699.exe, c.exe, go.exe
IOCs tracked for this family
5 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.
Other indicator types observed in public reporting.
Recent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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.