General

  • Target

    d998da1962809369fe3d264130ac9bc4c3916fd63ef2ed6e797aac003b304598

  • Size

    186KB

  • Sample

    220923-vjbjxsahfn

  • MD5

    8396cca808a01ea5121a1cf97dafbe58

  • SHA1

    a1368cdbf6cfc97b085c800563361bf4510254ae

  • SHA256

    d998da1962809369fe3d264130ac9bc4c3916fd63ef2ed6e797aac003b304598

  • SHA512

    6d5bdfe793d9f2426c4341b99c076098506a803eb7d63d9f4c28d4c483dd4ab6eaadf09b7a8ec413aceb671620ac0da8e7822e3397888912497caff6ded6fa59

  • SSDEEP

    3072:6aw0PvLXesOP55dt6pfMp38HCAUaWEBgDEs/PkD4n:vvLXO9tuVHDUaW

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      d998da1962809369fe3d264130ac9bc4c3916fd63ef2ed6e797aac003b304598

    • Size

      186KB

    • MD5

      8396cca808a01ea5121a1cf97dafbe58

    • SHA1

      a1368cdbf6cfc97b085c800563361bf4510254ae

    • SHA256

      d998da1962809369fe3d264130ac9bc4c3916fd63ef2ed6e797aac003b304598

    • SHA512

      6d5bdfe793d9f2426c4341b99c076098506a803eb7d63d9f4c28d4c483dd4ab6eaadf09b7a8ec413aceb671620ac0da8e7822e3397888912497caff6ded6fa59

    • SSDEEP

      3072:6aw0PvLXesOP55dt6pfMp38HCAUaWEBgDEs/PkD4n:vvLXO9tuVHDUaW

    • Tofsee

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

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks