General

  • Target
    6b8848b38b3e239a0df83efc456ad22bf5e59e7145b59d1f8e154881ebb9f8e3
  • Size 6.9MB
  • Sample241202-t3c2esslbs
  • SHA256 6b8848b38b3e239a0df83efc456ad22bf5e59e7145b59d1f8e154881ebb9f8e3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://cdn-downloads-now.xyz/COMSurrogate.exe

Extracted

Family
  • orcus

C2
  • 45.74.38.211:4782

Mutex
  • 7a9c0f279c464958aebbd585f20f1cf2

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    false

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Targets

    • Target
      6b8848b38b3e239a0df83efc456ad22bf5e59e7145b59d1f8e154881ebb9f8e3
    • Size 6.9MB
    • SHA256 6b8848b38b3e239a0df83efc456ad22bf5e59e7145b59d1f8e154881ebb9f8e3
    • MD5 SHA1 SHA512 SSDEEP
    • Orcus

      Orcus is a Remote Access Trojan that is being sold on underground forums.

    • Orcus family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • TA505

      Cybercrime group active since 2015, responsible for families like Dridex and Locky.

    • Ta505 family

    • XMRig Miner payload

    • Xmrig family

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Orcurs Rat Executable

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks