General

  • Target

    b8f3e6b1bf5f6aea4562166535a894da4ea83e0a48561c9c2105475090cc4d40

  • Size

    178KB

  • Sample

    221123-lkjr9afa61

  • MD5

    430ac5106be9dc5b14f97ae1a20b916e

  • SHA1

    7f367ccb8e2cdd977cf393ed87f81b0300590018

  • SHA256

    b8f3e6b1bf5f6aea4562166535a894da4ea83e0a48561c9c2105475090cc4d40

  • SHA512

    4f5b486b7fde152ac06066d7adfd54a754692285b68e8018b54d3021ef8827a2a25865650607c046cb769abb61090e70ae11949dbf78ae8ba777b480550b0b5d

  • SSDEEP

    3072:tQIURTXJcPgNlr5KBUgXLgfdLsJXopAafIrG54YVLRoy+EJ1Jcd91vq0k:tsiINjKJ2obagK1zrLJR3

Malware Config

Targets

    • Target

      b8f3e6b1bf5f6aea4562166535a894da4ea83e0a48561c9c2105475090cc4d40

    • Size

      178KB

    • MD5

      430ac5106be9dc5b14f97ae1a20b916e

    • SHA1

      7f367ccb8e2cdd977cf393ed87f81b0300590018

    • SHA256

      b8f3e6b1bf5f6aea4562166535a894da4ea83e0a48561c9c2105475090cc4d40

    • SHA512

      4f5b486b7fde152ac06066d7adfd54a754692285b68e8018b54d3021ef8827a2a25865650607c046cb769abb61090e70ae11949dbf78ae8ba777b480550b0b5d

    • SSDEEP

      3072:tQIURTXJcPgNlr5KBUgXLgfdLsJXopAafIrG54YVLRoy+EJ1Jcd91vq0k:tsiINjKJ2obagK1zrLJR3

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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.

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks