General

  • Target

    file.exe

  • Size

    302KB

  • Sample

    230501-v65fhshf85

  • MD5

    c47f32f68a1ca3309768b48ec98cd752

  • SHA1

    ab24f2d6a2cacd0b807b2a174e4c43e8d629b32e

  • SHA256

    de3f27526eca92d8bab305d2942fbaf89d96b5fda6467dbf931b373868215b0b

  • SHA512

    747db0d277eac21cdb2f51862fe861e27b444bdae4ed08bcc92a92d27c75c6ee602723fa102a3501f980bea18bd2c9a500113c6e9cf42d752240e145b1bd610d

  • SSDEEP

    3072:Muy7xHO5Ur+3sfGjmvp8hPdJidlfZl8ebAGMR5zODTKchd+OH:xy7xHvrmsejm6d2NZlDAGMHOKcv+y

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      302KB

    • MD5

      c47f32f68a1ca3309768b48ec98cd752

    • SHA1

      ab24f2d6a2cacd0b807b2a174e4c43e8d629b32e

    • SHA256

      de3f27526eca92d8bab305d2942fbaf89d96b5fda6467dbf931b373868215b0b

    • SHA512

      747db0d277eac21cdb2f51862fe861e27b444bdae4ed08bcc92a92d27c75c6ee602723fa102a3501f980bea18bd2c9a500113c6e9cf42d752240e145b1bd610d

    • SSDEEP

      3072:Muy7xHO5Ur+3sfGjmvp8hPdJidlfZl8ebAGMR5zODTKchd+OH:xy7xHvrmsejm6d2NZlDAGMHOKcv+y

    • 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