Resubmissions

04/06/2026, 19:39

260604-yc5e7sdw9m8

04/06/2026, 19:38

260604-ycgzxadw7m3

04/06/2026, 19:32

260604-x82hrac1418

04/06/2026, 19:09

260604-xtvfwsds8q8

General

  • Target
    chomik.exe
  • Size 163KB
  • Sample260604-xtvfwsds8q
  • SHA256 b64d7d71d7d5c3a36e02e6814a87d8a7294c31bb1a7d07ded9d9b5d1e45676ef
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      chomik.exe
    • Size 163KB
    • SHA256 b64d7d71d7d5c3a36e02e6814a87d8a7294c31bb1a7d07ded9d9b5d1e45676ef
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • 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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks