General

  • Target

    Kopx_Perm.exe

  • Size

    5.5MB

  • Sample

    240906-zta4csxerq

  • MD5

    8c13d2fd7836abcfe22c00ace0061d40

  • SHA1

    3c9640ec84a86cb10e87f2b2d8217f034aab1d5b

  • SHA256

    cd665494b4a760a948b940d3bbae302134c282deee633f04343fe34790406001

  • SHA512

    3c192fe7231e7c0306521c2701a3c9eeac0fd0091f6d59ef0f35a2dca193fcf5ff36008065838b2cabc92757708525a4d500e315a5502cbd8d7a6e5850255285

  • SSDEEP

    49152:/WFnhV6qMFnhVSr9JkzvkjXa+FnhVSr9JkzvkjXabsBFnhVKTTFBySg6etzcwp86:/YrkzgXyrkzgX9orG8farR1

Malware Config

Targets

    • Target

      Kopx_Perm.exe

    • Size

      5.5MB

    • MD5

      8c13d2fd7836abcfe22c00ace0061d40

    • SHA1

      3c9640ec84a86cb10e87f2b2d8217f034aab1d5b

    • SHA256

      cd665494b4a760a948b940d3bbae302134c282deee633f04343fe34790406001

    • SHA512

      3c192fe7231e7c0306521c2701a3c9eeac0fd0091f6d59ef0f35a2dca193fcf5ff36008065838b2cabc92757708525a4d500e315a5502cbd8d7a6e5850255285

    • SSDEEP

      49152:/WFnhV6qMFnhVSr9JkzvkjXa+FnhVSr9JkzvkjXabsBFnhVKTTFBySg6etzcwp86:/YrkzgXyrkzgX9orG8farR1

    • Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

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

    • Downloads MZ/PE file

    • 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.

    • Executes dropped EXE

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks