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General

  • Target

    d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205

  • Size

    115KB

  • Sample

    221127-z7a1hsea5t

  • MD5

    1df08a9aee02cd9b9f4cf0a35aeac20a

  • SHA1

    208418b0a43345d19047ab9f128c115ecb00793f

  • SHA256

    0ae6ffde80dac070383fe12ae4b4cacc535c56d2425648167edb33ebea98efe7

  • SHA512

    64757e80062c0cec52fa7c9a5fc30d3b2d8203c0d4aeea667363b8f37d1b24462cf3f965ef7fbd3ac3fc7794245df7b6686559a9306cfb01e9bf9f2597e88a8e

  • SSDEEP

    3072:yVZwnzHbpmJQtALYo8QN084QpdWQhtflQcQbbnnUqGl:2qnPpmJrhX4QphQHnal

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205

    • Size

      168KB

    • MD5

      c8789056c4fa188b6f6d23e2da5e8655

    • SHA1

      bffc6adeee841c0976e31d6518bab3f5e85bd589

    • SHA256

      d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205

    • SHA512

      be89c3d2b76c2da856395a0d935206d9a1da034f501d8a029a8925903328cfad4e4d21ada9fe646e51fd046b197edf49f6666cc9b0d4fc2926009567cd20fba1

    • SSDEEP

      3072:9omFCseno3BYS59iEemUxOCzpSu0Ih2Wzb:Rheo3BhezxpCIA

    • 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