Extracted

• • Target

    .

  • Size

    147KB

  • MD5

    1e410044e44587e992fd0747c4acc488

  • SHA1

    b931dcf656d2686eeeacbf520605b816b9489bd1

  • SHA256

    10c9c98d61695163a2ce1910abd2964a0d493ac5d24ab6b3e78dc76e9f346f51

  • SHA512

    4c319d10e8c6a8f20cf31054b8b7f7c3540ea967163e50ba14f8db8522ea8d1e35d3aa5cc3cff9b3b8b8ec326730fbee0491f85c80b4f0538f87335c85bfca36

  • SSDEEP

    1536:o4kud8LonVJoqYarK4DsYNgRyypRMPuNPV5nPztP4FPfaParP8R4DJ2PWTllU0rJ:rkPL6WVMllhAYuHhqiS

  Score

  10^/10

  crimsonratbootkitdiscoveryevasionpersistenceransomwareratspywarestealertrojan

  • CrimsonRAT main payload

  • CrimsonRat

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

    ratcrimsonrat

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Renames multiple (52) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware

  • Creates new service(s)

    persistence

  • Downloads MZ/PE file

  • Drops file in Drivers directory

  • Modifies Installed Components in the registry

    persistence

  • Sets file execution options in registry

    persistence

  • Sets service image path in registry

    persistence

  • Uses Session Manager for persistence

    Creates Session Manager registry key to run executable early in system boot.

    persistence

  • Checks computer location settings

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

  • 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.

    spywarestealer

  • Registers COM server for autorun

    persistence

  • Windows security modification

    evasiontrojan

  • Adds Run key to start application

    persistence

  • 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.

    discovery

  • Checks whether UAC is enabled

    evasiontrojan

  • Drops desktop.ini file(s)

  • 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

  • Writes to the Master Boot Record (MBR)

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence

  • Checks system information in the registry

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

  • Drops file in System32 directory

  behavioral1