General

  • Target

    file

  • Size

    216KB

  • Sample

    231009-xp4h1aff9v

  • MD5

    21c68b05ac982cff12afcb9af3a5657d

  • SHA1

    3651d8e4e0fdc66c1f888e34337ae2c13cb9b904

  • SHA256

    19a4f6df26db3df254ccf6270b2abe2ef6bcf86264cd17acaa5a46995672bbe4

  • SHA512

    734382f3432b09248f02799b1ada19787fd29402164a551494c7197f3b45a2527edf1e5b44a907f7cda70b04351acbc547c309f31f8c4347cc16a059a24a8131

  • SSDEEP

    3072:jHXfua5zpSxP5RcWrYlwRabrTRqQxSCcSd5PYe5OT99c:rfua5zK5RPslwCxS0A5Ts

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      216KB

    • MD5

      21c68b05ac982cff12afcb9af3a5657d

    • SHA1

      3651d8e4e0fdc66c1f888e34337ae2c13cb9b904

    • SHA256

      19a4f6df26db3df254ccf6270b2abe2ef6bcf86264cd17acaa5a46995672bbe4

    • SHA512

      734382f3432b09248f02799b1ada19787fd29402164a551494c7197f3b45a2527edf1e5b44a907f7cda70b04351acbc547c309f31f8c4347cc16a059a24a8131

    • SSDEEP

      3072:jHXfua5zpSxP5RcWrYlwRabrTRqQxSCcSd5PYe5OT99c:rfua5zK5RPslwCxS0A5Ts

    • 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)

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks