Analysis

  • max time kernel
    152s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-06-2022 07:36

General

  • Target

    b68542cfc28fcfae0313042956a7bf72.exe

  • Size

    3.1MB

  • MD5

    b68542cfc28fcfae0313042956a7bf72

  • SHA1

    245eddeb197886aaa3d2eefb12ad4b074462b299

  • SHA256

    b152d8eb3429cc766add38acd8cfe35f6a67f071e9c534b679d1b8ab5f9771d3

  • SHA512

    855d457c2c0df22890bb2c0616a4edc5cd832d181be39b3e9e1495a3ec94640c367312a1fbb7450cd01f56bb1b149e1209fb5d8685f98070aee0cccc7fa47bf7

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

62.197.136.15:5103

Attributes
  • communication_password

    e10adc3949ba59abbe56e057f20f883e

  • tor_process

    tor

Signatures

  • BitRAT

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

  • suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

    suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b68542cfc28fcfae0313042956a7bf72.exe
    "C:\Users\Admin\AppData\Local\Temp\b68542cfc28fcfae0313042956a7bf72.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 42
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Windows\SysWOW64\timeout.exe
        timeout 42
        3⤵
        • Delays execution with timeout.exe
        PID:3028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3552

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1740-131-0x0000000000000000-mapping.dmp

  • memory/2272-130-0x0000000000C00000-0x0000000000F1E000-memory.dmp

    Filesize

    3.1MB

  • memory/3028-132-0x0000000000000000-mapping.dmp

  • memory/3552-133-0x0000000000000000-mapping.dmp

  • memory/3552-134-0x0000000000400000-0x00000000007CE000-memory.dmp

    Filesize

    3.8MB

  • memory/3552-135-0x0000000000400000-0x00000000007CE000-memory.dmp

    Filesize

    3.8MB

  • memory/3552-136-0x0000000000400000-0x00000000007CE000-memory.dmp

    Filesize

    3.8MB

  • memory/3552-137-0x0000000000400000-0x00000000007CE000-memory.dmp

    Filesize

    3.8MB

  • memory/3552-138-0x00000000748E0000-0x0000000074919000-memory.dmp

    Filesize

    228KB

  • memory/3552-139-0x0000000074C60000-0x0000000074C99000-memory.dmp

    Filesize

    228KB

  • memory/3552-140-0x0000000000400000-0x00000000007CE000-memory.dmp

    Filesize

    3.8MB

  • memory/3552-141-0x0000000074C60000-0x0000000074C99000-memory.dmp

    Filesize

    228KB