General

  • Target

    file.exe

  • Size

    196KB

  • Sample

    230411-frdxpaae58

  • MD5

    c0e61d01289f3a5a54e54f53f05e669e

  • SHA1

    086df3e7728832745a0179c6a3368caddc6a5820

  • SHA256

    d0db1c583a923cc68693c9299997c8fe784295017d7d6e01a12dd8818bdf1ed8

  • SHA512

    5cf481318a2b75ced7108a5cfc52924b039e6e3a27e82ad0f916de59d3faf7b1ea2760457fbaa3bbece174cc5f6b384d4469ded279bc8bab2ad46cc6188a0928

  • SSDEEP

    3072:4w28CrrrZi8q+8Wxmftll6Y1Fj1Iy0b/cUNvA9Nmi2hgSp:b28Ada90mftl0Y1HkUSAKRZ

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      196KB

    • MD5

      c0e61d01289f3a5a54e54f53f05e669e

    • SHA1

      086df3e7728832745a0179c6a3368caddc6a5820

    • SHA256

      d0db1c583a923cc68693c9299997c8fe784295017d7d6e01a12dd8818bdf1ed8

    • SHA512

      5cf481318a2b75ced7108a5cfc52924b039e6e3a27e82ad0f916de59d3faf7b1ea2760457fbaa3bbece174cc5f6b384d4469ded279bc8bab2ad46cc6188a0928

    • SSDEEP

      3072:4w28CrrrZi8q+8Wxmftll6Y1Fj1Iy0b/cUNvA9Nmi2hgSp:b28Ada90mftl0Y1HkUSAKRZ

    • 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