General

  • Target

    5eb1da9ebcde8b04e00330c70dec2978.exe

  • Size

    265KB

  • Sample

    230513-hn8zrsfg26

  • MD5

    5eb1da9ebcde8b04e00330c70dec2978

  • SHA1

    e2a051b7eafa8b8cba42ef637e659f7762f1a9e8

  • SHA256

    7baa1507e32327e92f27e1bf1fdd4a398298573b81c30c22b704d3fbdc9e3b53

  • SHA512

    2e611f295a85510d95beb4c23bf1549f9d7c89ed3d8a907c1613c0c57345fe840dff0131bbc21e1dbe6d0822746823fdd6e98d5ac6c2bd0c51aa3df308d15314

  • SSDEEP

    3072:17fhk6OZORO7u4jBZz6Ds7Ru2O3tGVbRTXxmS+U5I/9yqp7:Rm6OfpBl6YoPU/TAS

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      5eb1da9ebcde8b04e00330c70dec2978.exe

    • Size

      265KB

    • MD5

      5eb1da9ebcde8b04e00330c70dec2978

    • SHA1

      e2a051b7eafa8b8cba42ef637e659f7762f1a9e8

    • SHA256

      7baa1507e32327e92f27e1bf1fdd4a398298573b81c30c22b704d3fbdc9e3b53

    • SHA512

      2e611f295a85510d95beb4c23bf1549f9d7c89ed3d8a907c1613c0c57345fe840dff0131bbc21e1dbe6d0822746823fdd6e98d5ac6c2bd0c51aa3df308d15314

    • SSDEEP

      3072:17fhk6OZORO7u4jBZz6Ds7Ru2O3tGVbRTXxmS+U5I/9yqp7:Rm6OfpBl6YoPU/TAS

    • 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