General

  • Target

    untitled.obj

  • Size

    951B

  • Sample

    241227-v38zjaxpap

  • MD5

    594a3d20cc63f17655b4e6243629a234

  • SHA1

    d43a403bfb64c9e64c0bb76905135a8d07d6734e

  • SHA256

    dcd1a1741e817ab00a3385bbe5ad93e1fecf25dd36defa8c781f9c87b49c1ba8

  • SHA512

    0055999cc0ff9251c819c4192a10a04a6085780abe5ab08e25228436b2e099b85cd20eab9beb9113ed463a09f52320ed1578a8c3a24927cfe598821ac58a049c

Malware Config

Extracted

Family

crimsonrat

C2

185.136.161.124

Targets

    • Target

      untitled.obj

    • Size

      951B

    • MD5

      594a3d20cc63f17655b4e6243629a234

    • SHA1

      d43a403bfb64c9e64c0bb76905135a8d07d6734e

    • SHA256

      dcd1a1741e817ab00a3385bbe5ad93e1fecf25dd36defa8c781f9c87b49c1ba8

    • SHA512

      0055999cc0ff9251c819c4192a10a04a6085780abe5ab08e25228436b2e099b85cd20eab9beb9113ed463a09f52320ed1578a8c3a24927cfe598821ac58a049c

    • CrimsonRAT main payload

    • CrimsonRat

      Crimson RAT is a malware linked to a Pakistani-linked threat actor.

    • Crimsonrat family

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • A potential corporate email address has been identified in the URL: [email protected]

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Enumerates processes with tasklist

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks