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General

  • Target

    NEAS.98348e8b85c3fc64f80db5578f4d474732a69220c17155ea93104dab72bd71eeexe_JC.exe

  • Size

    285KB

  • Sample

    231009-s6etraea6w

  • MD5

    452f303bac83dc941d6433b176449867

  • SHA1

    5ad4b1842f9b04319f8f60a8e44058672ffc4c50

  • SHA256

    98348e8b85c3fc64f80db5578f4d474732a69220c17155ea93104dab72bd71ee

  • SHA512

    366075c134863cee78286a4fb59b7b01970454e22760a4dd5b436f83d6c4866639a4cb9bb3d6b85c405b8c8873d2870b88c758f23f6694c05c7667cb36473faa

  • SSDEEP

    3072:ecSKLbut7BWLMcD/FHNKZuKqtyONJvq4H6gGIvuFHrHtIxJXA4/a9:oKHOWwe/RNKkK0vNdq4HZG0Wr2u

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      NEAS.98348e8b85c3fc64f80db5578f4d474732a69220c17155ea93104dab72bd71eeexe_JC.exe

    • Size

      285KB

    • MD5

      452f303bac83dc941d6433b176449867

    • SHA1

      5ad4b1842f9b04319f8f60a8e44058672ffc4c50

    • SHA256

      98348e8b85c3fc64f80db5578f4d474732a69220c17155ea93104dab72bd71ee

    • SHA512

      366075c134863cee78286a4fb59b7b01970454e22760a4dd5b436f83d6c4866639a4cb9bb3d6b85c405b8c8873d2870b88c758f23f6694c05c7667cb36473faa

    • SSDEEP

      3072:ecSKLbut7BWLMcD/FHNKZuKqtyONJvq4H6gGIvuFHrHtIxJXA4/a9:oKHOWwe/RNKkK0vNdq4HZG0Wr2u

    • 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