General

  • Target

    Abstract_Loader.exe

  • Size

    26.1MB

  • Sample

    240907-xqk32szark

  • MD5

    498e87250ffae57099f62b3920d36de6

  • SHA1

    1bb4f5ccc858a2f2a769913e181c6251151d5aed

  • SHA256

    b75c88970161c2314ec482bd39d038d0267b10162e1b8c2774baf8df370fa1d5

  • SHA512

    2b655eba4c47949e07b32e43d8c3f92903c83ad8d6eb498add06c8240c931c6038a75076de9ef98a365cf624abfeae3b7f2aa44a89cd26513298d5f989ca8a93

  • SSDEEP

    393216:C+WfX1VZsiP5n7zdejTCC1ksRPVwvRn5RIj96dNv9rkECpY5IPIzL+:C+WDnRejOC1ksU5nLY6dfyPsL

Malware Config

Targets

    • Target

      Abstract_Loader.exe

    • Size

      26.1MB

    • MD5

      498e87250ffae57099f62b3920d36de6

    • SHA1

      1bb4f5ccc858a2f2a769913e181c6251151d5aed

    • SHA256

      b75c88970161c2314ec482bd39d038d0267b10162e1b8c2774baf8df370fa1d5

    • SHA512

      2b655eba4c47949e07b32e43d8c3f92903c83ad8d6eb498add06c8240c931c6038a75076de9ef98a365cf624abfeae3b7f2aa44a89cd26513298d5f989ca8a93

    • SSDEEP

      393216:C+WfX1VZsiP5n7zdejTCC1ksRPVwvRn5RIj96dNv9rkECpY5IPIzL+:C+WDnRejOC1ksU5nLY6dfyPsL

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Drops startup file

    • 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

    • Modifies system executable filetype association

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • Checks whether UAC is enabled

    • Checks system information in the registry

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks