General

  • Target

    file.exe

  • Size

    255KB

  • Sample

    221025-xemgqsdedm

  • MD5

    cde46c161a2dfc40f2ca20b38cf0e54e

  • SHA1

    742d8370e4c94008266b178016ca7046a35e8288

  • SHA256

    5cc838c12947858530e9fa993021ff8c315f34a44028dd4496e660b263552cb2

  • SHA512

    6cb25de60894a933251dcc120d7b02771efac7203bbde1de297618dfaff084dc7c2e7aa0473609e49b815310488f0972f6b1d35c91bb4ea9f0d1ddd5196c6a95

  • SSDEEP

    3072:jXVuqzlk8LMSKipBeTPe8eRWScjvqd3rKyrvzTMNgGWra:bUk/L+ABeTPe8dJitKy3Ynaa

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      255KB

    • MD5

      cde46c161a2dfc40f2ca20b38cf0e54e

    • SHA1

      742d8370e4c94008266b178016ca7046a35e8288

    • SHA256

      5cc838c12947858530e9fa993021ff8c315f34a44028dd4496e660b263552cb2

    • SHA512

      6cb25de60894a933251dcc120d7b02771efac7203bbde1de297618dfaff084dc7c2e7aa0473609e49b815310488f0972f6b1d35c91bb4ea9f0d1ddd5196c6a95

    • SSDEEP

      3072:jXVuqzlk8LMSKipBeTPe8eRWScjvqd3rKyrvzTMNgGWra:bUk/L+ABeTPe8dJitKy3Ynaa

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks