General

  • Target

    .

  • Size

    147KB

  • Sample

    240503-v17zfsbg8x

  • MD5

    d219b446886f1e5a1d0c9ee281c73b15

  • SHA1

    48f9195b2d7984b8d8e455d095ed7e2006ae6ece

  • SHA256

    fbef789544ba4986748932d1215b46e792f800d7e3c461e296a4cd967a9f4c10

  • SHA512

    174dce07a240f949e67d00a0984b10262e35e5c7d17dca9aa1dfd3c7d666009d290f0b248960a8f8fc3ebffa8328e48d36d423c4969eb25a1e985f9573c24147

  • SSDEEP

    1536:opkud8LonVJoqYarK4DsYNgRyypRMPuNPV5nPztP4FPfaParP8R4DJ2PWTllU0ru:KkPL6WVMllhAY9HhqiS

Malware Config

Extracted

Family

crimsonrat

C2

185.136.161.124

Targets

    • Target

      .

    • Size

      147KB

    • MD5

      d219b446886f1e5a1d0c9ee281c73b15

    • SHA1

      48f9195b2d7984b8d8e455d095ed7e2006ae6ece

    • SHA256

      fbef789544ba4986748932d1215b46e792f800d7e3c461e296a4cd967a9f4c10

    • SHA512

      174dce07a240f949e67d00a0984b10262e35e5c7d17dca9aa1dfd3c7d666009d290f0b248960a8f8fc3ebffa8328e48d36d423c4969eb25a1e985f9573c24147

    • SSDEEP

      1536:opkud8LonVJoqYarK4DsYNgRyypRMPuNPV5nPztP4FPfaParP8R4DJ2PWTllU0ru:KkPL6WVMllhAY9HhqiS

    • CrimsonRAT main payload

    • CrimsonRat

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

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • Registers COM server for autorun

    • 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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks