General

  • Target

    file.exe

  • Size

    315KB

  • Sample

    230510-wkpzdahf55

  • MD5

    1e93be0d225ce928393039c9771321fb

  • SHA1

    27ffe470bee42d5ce14f3914bc710f68fbd74247

  • SHA256

    e54e9f7fe7725afa85dfe0d0e04cf873d01084989205d93b4b4e1e1de7d935f3

  • SHA512

    3d51ef74913c2266f88a2b734ecb058caa390e3f72fb7aa47e7c5ea3565ef832394a0854c3aa84208143fb005d3d506a46465749b56d80aecee9755c5f8d378c

  • SSDEEP

    3072:TNXD1CpI7TkxlIlY0I0n+sDiV6YtnEduisT58ThH8x/06j0eO/OfgaH9xWm+d/HO:hEpjXQYhIs6YtnEduisN8F81069lH9A

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      315KB

    • MD5

      1e93be0d225ce928393039c9771321fb

    • SHA1

      27ffe470bee42d5ce14f3914bc710f68fbd74247

    • SHA256

      e54e9f7fe7725afa85dfe0d0e04cf873d01084989205d93b4b4e1e1de7d935f3

    • SHA512

      3d51ef74913c2266f88a2b734ecb058caa390e3f72fb7aa47e7c5ea3565ef832394a0854c3aa84208143fb005d3d506a46465749b56d80aecee9755c5f8d378c

    • SSDEEP

      3072:TNXD1CpI7TkxlIlY0I0n+sDiV6YtnEduisT58ThH8x/06j0eO/OfgaH9xWm+d/HO:hEpjXQYhIs6YtnEduisN8F81069lH9A

    • 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