General

  • Target
    a67e34baacfca98f323981d3b0087f3b.exe
  • Size 6.9MB
  • Sample241206-kbvmqaylay
  • SHA256 6092579a997945b10d3f279693baa004d180417ccfec941c45eb20705a2b4706
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://exodus.lat/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
      a67e34baacfca98f323981d3b0087f3b.exe
    • Size 6.9MB
    • SHA256 6092579a997945b10d3f279693baa004d180417ccfec941c45eb20705a2b4706
    • 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

      Powershell Invoke Web Request.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks