General

  • Target

    file.exe

  • Size

    256KB

  • Sample

    231107-ag6xtsgf6v

  • MD5

    215ecc6f7f3faec9a16724b9995ad026

  • SHA1

    7fe8d77ee09d1217cb6b303f3790d39e6ef3414d

  • SHA256

    6e901993ad7901184a1cdf31159c9c95a853c4044dc36cdcff605408a929a57b

  • SHA512

    abd0cc59ea4d5a0c9789b25f9a221be3c3524eaa3e4081a5d457dbab1e236b2d52f58accb13557f1fb98840dc5fc3b264bf6e75a6087f0e4366a5f56c3de2426

  • SSDEEP

    3072:SsDIxfkPPkr/dtRkgPnfYPhIHkhO9Wpv82X4ol9cdtzvH:DCk45kgPaEuO4N8SXIz

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      256KB

    • MD5

      215ecc6f7f3faec9a16724b9995ad026

    • SHA1

      7fe8d77ee09d1217cb6b303f3790d39e6ef3414d

    • SHA256

      6e901993ad7901184a1cdf31159c9c95a853c4044dc36cdcff605408a929a57b

    • SHA512

      abd0cc59ea4d5a0c9789b25f9a221be3c3524eaa3e4081a5d457dbab1e236b2d52f58accb13557f1fb98840dc5fc3b264bf6e75a6087f0e4366a5f56c3de2426

    • SSDEEP

      3072:SsDIxfkPPkr/dtRkgPnfYPhIHkhO9Wpv82X4ol9cdtzvH:DCk45kgPaEuO4N8SXIz

    • 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