General

  • Target

    random.exe

  • Size

    3.8MB

  • Sample

    250224-wlcqfawpz5

  • MD5

    639af76cb7333cbd609da5d52a6e195b

  • SHA1

    a1c8a3e99f11c72f0dcdfd75b75d6dbe9f266483

  • SHA256

    a6e9b84cd1cdf3312a57f425bce1a490195864c5fae5ba5b0873c729ebbe11a8

  • SHA512

    67510ef5a9dfa0d1dbf38d87a8f7b92b1dcd9e3979fc4632a19830875c5a86fa7261f8d11e86b506ebf7621352dc69093fb1a0e3432aa25118a1d6240c66de51

  • SSDEEP

    98304:ISsI112Bo+ZNG8djKVhr42I4j+b3Bw/rz16hy:p51wBfZVK342g9w/rkh

Malware Config

Extracted

Family

gcleaner

C2

185.156.73.73

Targets

    • Target

      random.exe

    • Size

      3.8MB

    • MD5

      639af76cb7333cbd609da5d52a6e195b

    • SHA1

      a1c8a3e99f11c72f0dcdfd75b75d6dbe9f266483

    • SHA256

      a6e9b84cd1cdf3312a57f425bce1a490195864c5fae5ba5b0873c729ebbe11a8

    • SHA512

      67510ef5a9dfa0d1dbf38d87a8f7b92b1dcd9e3979fc4632a19830875c5a86fa7261f8d11e86b506ebf7621352dc69093fb1a0e3432aa25118a1d6240c66de51

    • SSDEEP

      98304:ISsI112Bo+ZNG8djKVhr42I4j+b3Bw/rz16hy:p51wBfZVK342g9w/rkh

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

    • Gcleaner family

    • 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.

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks