Overview

overview

10

Static

static

3

WinLocker ...n).exe

windows10-2004-x64

10

Sharing

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General

  • Target
    WinLocker Builder (test version).exe
  • Size 5.1MB
  • Sample260508-kkxtfaey6z
  • SHA256 f3fa585e7418f8b33bb279c72461d1822d0da9c0da673d158acfeecfd0ca6017
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
bitratbootkitdefense_evasiondiscoverypersistencetrojan

Malware Config

Extracted

Family

  • bitrat

Version

  • 1.38

C2

  • current-necessity.at.ply.gg:49446

Attributes
  • communication_password

    c5e4e64cc9384fda09aa232c1811af0e

  • install_dir

    MsSystemDriver

  • install_file

    MsMpEng.exe

  • tor_process

    tor

Targets

    • Target
      WinLocker Builder (test version).exe
    • Size 5.1MB
    • SHA256 f3fa585e7418f8b33bb279c72461d1822d0da9c0da673d158acfeecfd0ca6017
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    bootkitdefense_evasiondiscoverybitratpersistencetrojan

    • Family: BitRAT

      BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

      trojanbitrat

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

      defense_evasion

    • Checks BIOS information in registry

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

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks