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General

  • Target

    799c987ad840fbd563a1bd09f694958c07be362104b88171b423f2af4c395dc4

  • Size

    276KB

  • Sample

    231120-ff5k9sdh29

  • MD5

    579bef931c82955a57587da5bbb15866

  • SHA1

    49524805286b19afc22f227531bf64146c88ae48

  • SHA256

    799c987ad840fbd563a1bd09f694958c07be362104b88171b423f2af4c395dc4

  • SHA512

    f21dff5d462696a067aab843a06dfb7b0cb3e1fa931693046089f33dcb9011e331bd83a99b5c5666df2d7ed59b7af5b2c02f4138cb1280a1b0d4733a0aa0ca65

  • SSDEEP

    3072:X6qeH/j3LXZp9I+LmqGm1+0C+7Fys1/mQqeZApUn2/LhRXQLOPf7ovbeB4:AH3f9I+aJmYEhys1/mdDp5/TQOPTM

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      799c987ad840fbd563a1bd09f694958c07be362104b88171b423f2af4c395dc4

    • Size

      276KB

    • MD5

      579bef931c82955a57587da5bbb15866

    • SHA1

      49524805286b19afc22f227531bf64146c88ae48

    • SHA256

      799c987ad840fbd563a1bd09f694958c07be362104b88171b423f2af4c395dc4

    • SHA512

      f21dff5d462696a067aab843a06dfb7b0cb3e1fa931693046089f33dcb9011e331bd83a99b5c5666df2d7ed59b7af5b2c02f4138cb1280a1b0d4733a0aa0ca65

    • SSDEEP

      3072:X6qeH/j3LXZp9I+LmqGm1+0C+7Fys1/mQqeZApUn2/LhRXQLOPf7ovbeB4:AH3f9I+aJmYEhys1/mdDp5/TQOPTM

    • 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

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks