General

  • Target

    silence.exe

  • Size

    5.1MB

  • Sample

    240411-ytw56afa51

  • MD5

    c3d8fed6793c10054fc1e28c58254695

  • SHA1

    1cab9bd203839ff49726a6d8314130809ac05526

  • SHA256

    81157040d846bd8b41f982c2598ec87e80394eb5602ceeaa7f33b8396c898833

  • SHA512

    63dbb57e0ac772faffcf7e25543ea5fe551b63e22ac7d60acea5dbb8f8af888a30bc24f1cca624a066742d834499e62d4059bb14e8e9528aa68c24cd52c058ef

  • SSDEEP

    98304:O27ZD3U7vGHe9/J+M8zV0xmJa0Ghfq6dUJy57vXDYCkhOhlRErh:OkwGHM+MeOxmJa0wfqKpMCksO

Score
9/10

Malware Config

Targets

    • Target

      silence.exe

    • Size

      5.1MB

    • MD5

      c3d8fed6793c10054fc1e28c58254695

    • SHA1

      1cab9bd203839ff49726a6d8314130809ac05526

    • SHA256

      81157040d846bd8b41f982c2598ec87e80394eb5602ceeaa7f33b8396c898833

    • SHA512

      63dbb57e0ac772faffcf7e25543ea5fe551b63e22ac7d60acea5dbb8f8af888a30bc24f1cca624a066742d834499e62d4059bb14e8e9528aa68c24cd52c058ef

    • SSDEEP

      98304:O27ZD3U7vGHe9/J+M8zV0xmJa0Ghfq6dUJy57vXDYCkhOhlRErh:OkwGHM+MeOxmJa0wfqKpMCksO

    Score
    9/10
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Stops running service(s)

    • Checks BIOS information in registry

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Drops desktop.ini file(s)

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks