Resubmissions

10-11-2024 11:50

241110-nzxzjayrep 8

10-11-2024 11:47

241110-nyb1nswdlq 8

10-11-2024 11:42

241110-nvex6ayqfj 8

General

  • Target

    Krnl_8.10.8_x64_en-US.msi

  • Size

    5.0MB

  • Sample

    241110-nzxzjayrep

  • MD5

    b837d10b9a71425dbf3d62b2cc59f447

  • SHA1

    85c9ba3331f7eb432c28365b0d1f36a201373a72

  • SHA256

    76c83d1bebd6b01bab76d9a94f223e1a3cf20f2040b8d58a12625074e2936f7c

  • SHA512

    f20999d19c470941c85912725d6f89c5073d475572ece92ce5b8e5425cdf012950f230c353870d86469ab6658bdc504abbb41260cb676f109551860433bcb405

  • SSDEEP

    98304:XPky+agPtUpupDeOds+883iSh79bubjnvmu5/qv4eYb2Tqg9EeYImwqPY6Bvv8m:XPky9GtAcdsENbubzSJb9lyw

Malware Config

Targets

    • Target

      Krnl_8.10.8_x64_en-US.msi

    • Size

      5.0MB

    • MD5

      b837d10b9a71425dbf3d62b2cc59f447

    • SHA1

      85c9ba3331f7eb432c28365b0d1f36a201373a72

    • SHA256

      76c83d1bebd6b01bab76d9a94f223e1a3cf20f2040b8d58a12625074e2936f7c

    • SHA512

      f20999d19c470941c85912725d6f89c5073d475572ece92ce5b8e5425cdf012950f230c353870d86469ab6658bdc504abbb41260cb676f109551860433bcb405

    • SSDEEP

      98304:XPky+agPtUpupDeOds+883iSh79bubjnvmu5/qv4eYb2Tqg9EeYImwqPY6Bvv8m:XPky9GtAcdsENbubzSJb9lyw

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • A potential corporate email address has been identified in the URL: httpswww.youtube.com@Omnidevcbrd1

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Checks for any installed AV software in registry

    • Downloads MZ/PE file

    • Enumerates connected drives

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

    • Event Triggered Execution: Image File Execution Options Injection

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Network Share Discovery

      Attempt to gather information on host network.

    • Checks computer location settings

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

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • 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.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks