General

  • Target

    ez.exe

  • Size

    903KB

  • Sample

    250116-tstlesyrhm

  • MD5

    1f0eaf2212e650d546ce25bed971ea6a

  • SHA1

    10964f65e5f5cb5b39793948c47960b3df816a78

  • SHA256

    5488f8ebdd761b238ac30772eaaf4bc470da2d9b518c13edccfae3ab4c3e9721

  • SHA512

    d4773894f5a38fc4d994aff8985311e16310de775fbe88e0caf67aa0cd45b89ad2f175daa7fd3465b2112ed4c490c36832d92ab23b71bc50e568c4bd9aea8f68

  • SSDEEP

    12288:R8shHAVBuQBBed37dG1lFlWcYT70pxnnaaoawMRVcTqSA+9rZNrI0AilFEvxHvBy:e3s4MROxnF9LqrZlI0AilFEvxHiVeo

Malware Config

Extracted

Family

orcus

C2

0.tcp.ngrok.io:18585

Mutex

6aa90683b44541319ca2fec646e0dff6

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

      ez.exe

    • Size

      903KB

    • MD5

      1f0eaf2212e650d546ce25bed971ea6a

    • SHA1

      10964f65e5f5cb5b39793948c47960b3df816a78

    • SHA256

      5488f8ebdd761b238ac30772eaaf4bc470da2d9b518c13edccfae3ab4c3e9721

    • SHA512

      d4773894f5a38fc4d994aff8985311e16310de775fbe88e0caf67aa0cd45b89ad2f175daa7fd3465b2112ed4c490c36832d92ab23b71bc50e568c4bd9aea8f68

    • SSDEEP

      12288:R8shHAVBuQBBed37dG1lFlWcYT70pxnnaaoawMRVcTqSA+9rZNrI0AilFEvxHvBy:e3s4MROxnF9LqrZlI0AilFEvxHiVeo

    • Orcus

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

    • Orcus family

    • Orcus main payload

    • Orcurs Rat Executable

    • Modifies Windows Firewall

    • Server Software Component: Terminal Services DLL

    • 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)

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

MITRE ATT&CK Enterprise v15

Tasks