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General

  • Target

    file

  • Size

    333KB

  • Sample

    231011-pyqdqsac53

  • MD5

    b08ce09bc71caeb447e21432944adbf9

  • SHA1

    c35f503eb3da0d55d395f7436b993b4004ca4f9f

  • SHA256

    dafa682a801d878ba74bcb69573d33d2534ca0db04f52d29206a2ad360e12f47

  • SHA512

    d74132620183939e781bdf7c7c44d242f1f32cbefa071dd29b7a0abbf87c3c47357b75ae94c8013a154bcaf78c66abffc740907ec232a21e368c99a31569c089

  • SSDEEP

    3072:BWOrpckmv8i5dcwsGiaggHrWKyF40ChzfmpiPvMm2Jd7M5SLJL1C7AqLQLybO1:gOrpbmUudcBGNW/3Qr4uEDb7cz7xIyK

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      333KB

    • MD5

      b08ce09bc71caeb447e21432944adbf9

    • SHA1

      c35f503eb3da0d55d395f7436b993b4004ca4f9f

    • SHA256

      dafa682a801d878ba74bcb69573d33d2534ca0db04f52d29206a2ad360e12f47

    • SHA512

      d74132620183939e781bdf7c7c44d242f1f32cbefa071dd29b7a0abbf87c3c47357b75ae94c8013a154bcaf78c66abffc740907ec232a21e368c99a31569c089

    • SSDEEP

      3072:BWOrpckmv8i5dcwsGiaggHrWKyF40ChzfmpiPvMm2Jd7M5SLJL1C7AqLQLybO1:gOrpbmUudcBGNW/3Qr4uEDb7cz7xIyK

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks