General

  • Target
    doleful.exe
  • Size 801KB
  • Sample230731-l1rsssec45
  • SHA256 d206ccc4397de8003b4770d67ea8315e4d997f519c694b0d1f0a59451389277d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      doleful.exe
    • Size 801KB
    • SHA256 d206ccc4397de8003b4770d67ea8315e4d997f519c694b0d1f0a59451389277d
    • MD5 SHA1 SHA512 SSDEEP
    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks