General

  • Target

    file.exe

  • Size

    214KB

  • Sample

    221216-w5ghqsaa9t

  • MD5

    31d5592f1627d5c5f133a440001e9acb

  • SHA1

    9d302c00bc8dc45a3ee7d47234e8b68444c15a72

  • SHA256

    c310bcffb9147595faf00f7bfe71ebf3fc64027258e7ae643eca87e3f072ced1

  • SHA512

    1de2102810bf12f2da7a3fdda90255b48f7454fd4bfcbdc220653460f373bc7efbbe6d71aafbcd0666864c10e61c08c718951aff6656dcaba9978f38cfdf154d

  • SSDEEP

    3072:0ws4u8Larfv0RSaUNyzrXXNOau1LszvT1l2I840zwUzQRKF+:zNL+f3aUkzrXXNOv1gzb1l2X40M2b

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      214KB

    • MD5

      31d5592f1627d5c5f133a440001e9acb

    • SHA1

      9d302c00bc8dc45a3ee7d47234e8b68444c15a72

    • SHA256

      c310bcffb9147595faf00f7bfe71ebf3fc64027258e7ae643eca87e3f072ced1

    • SHA512

      1de2102810bf12f2da7a3fdda90255b48f7454fd4bfcbdc220653460f373bc7efbbe6d71aafbcd0666864c10e61c08c718951aff6656dcaba9978f38cfdf154d

    • SSDEEP

      3072:0ws4u8Larfv0RSaUNyzrXXNOau1LszvT1l2I840zwUzQRKF+:zNL+f3aUkzrXXNOv1gzb1l2X40M2b

    • 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