General

  • Target

    RamBoost.exe

  • Size

    11.1MB

  • Sample

    250222-sdkvassr12

  • MD5

    a5c93db4c83dab084d6d4ae80ce1e527

  • SHA1

    e90866ae65781058b98cb155e35b7ce1445d6139

  • SHA256

    d9dc36b7bedf2632fe0a7ca99478b20406d288a69bd7b65e5da2c9d748a5b81f

  • SHA512

    e61fdcabc99dbef705ac83dfa347c5f12b584ceec8b4f2fa7997a3f12722944987e65620d2f8764174e2145e7b3e7cf31372f4a591a38e4fc4496063f03e35b7

  • SSDEEP

    24576:CuQ4MROxnFD3+74S4xrZlI0AilFEvxHiVq7:CuzMiJxrZlI0AilFEvxHi4

Malware Config

Extracted

Family

orcus

C2

dandev.us.to:1015

Mutex

33346576134e432b900bfc3fb9baec32

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    true

  • install_path

    %temp%\Updater.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\Watchdog.exe

Targets

    • Target

      RamBoost.exe

    • Size

      11.1MB

    • MD5

      a5c93db4c83dab084d6d4ae80ce1e527

    • SHA1

      e90866ae65781058b98cb155e35b7ce1445d6139

    • SHA256

      d9dc36b7bedf2632fe0a7ca99478b20406d288a69bd7b65e5da2c9d748a5b81f

    • SHA512

      e61fdcabc99dbef705ac83dfa347c5f12b584ceec8b4f2fa7997a3f12722944987e65620d2f8764174e2145e7b3e7cf31372f4a591a38e4fc4496063f03e35b7

    • SSDEEP

      24576:CuQ4MROxnFD3+74S4xrZlI0AilFEvxHiVq7:CuzMiJxrZlI0AilFEvxHi4

    • Orcus

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

    • Orcus family

    • Orcus main payload

    • Orcurs Rat Executable

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks