General

  • Target

    file.exe

  • Size

    173KB

  • Sample

    230316-pv75dada9y

  • MD5

    15ff2e133cf2a118b4dfcfebe26cc2d1

  • SHA1

    c303ada89afdaeba1ee50c98bd1b547f28c45ef0

  • SHA256

    0557d5383704424bd7ca3b63b948e3bf47f869f5bf782142deab956c27f447f5

  • SHA512

    90156fc077432af7d0b11782289c67e4421aa6e68638bb513a6a636a8de8d2588ca5ab17528ecd02c1cb8248521cfead2693b9add3bedbf47d7c0c041c1cbc87

  • SSDEEP

    3072:oDf+n4MRz4MFb3FvhbR9JWQUrF3PFIn9jrsbYcXJX:sg9fbVvhfcgjIn

Malware Config

Extracted

Family

tofsee

C2

muspelheim.be

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      173KB

    • MD5

      15ff2e133cf2a118b4dfcfebe26cc2d1

    • SHA1

      c303ada89afdaeba1ee50c98bd1b547f28c45ef0

    • SHA256

      0557d5383704424bd7ca3b63b948e3bf47f869f5bf782142deab956c27f447f5

    • SHA512

      90156fc077432af7d0b11782289c67e4421aa6e68638bb513a6a636a8de8d2588ca5ab17528ecd02c1cb8248521cfead2693b9add3bedbf47d7c0c041c1cbc87

    • SSDEEP

      3072:oDf+n4MRz4MFb3FvhbR9JWQUrF3PFIn9jrsbYcXJX:sg9fbVvhfcgjIn

    • 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 v6

Tasks