Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    09/05/2022, 17:00

General

  • Target

    ff7b10fe298cf2eec53adcdee9958ccf.exe

  • Size

    42KB

  • MD5

    ff7b10fe298cf2eec53adcdee9958ccf

  • SHA1

    9c100db97f6d11ab52e9b01990ee10b8a8b4a6df

  • SHA256

    0a10da2b3f7b1124c277b9f8d08e0cfb409f69047d01e241f3e2a09726bf9ab0

  • SHA512

    0bd4dbdf6df2b3f23e5a7fabbb39ef83b437b9706f3553c5206240e01dd3a1d027e9ca95ab091cd1345c1d51e4a43affffc10d02b220bb1ff630758be233afe4

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

carmenariasu283.duckdns.org:5020

Attributes
  • communication_password

    202cb962ac59075b964b07152d234b70

  • 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)

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ff7b10fe298cf2eec53adcdee9958ccf.exe
    "C:\Users\Admin\AppData\Local\Temp\ff7b10fe298cf2eec53adcdee9958ccf.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:1860
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 20
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Windows\SysWOW64\timeout.exe
        timeout 20
        3⤵
        • Delays execution with timeout.exe
        PID:4472
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
        PID:728
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        2⤵
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1552

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1552-136-0x0000000000400000-0x00000000007E4000-memory.dmp

            Filesize

            3.9MB

          • memory/1552-137-0x0000000000400000-0x00000000007E4000-memory.dmp

            Filesize

            3.9MB

          • memory/1552-138-0x0000000000400000-0x00000000007E4000-memory.dmp

            Filesize

            3.9MB

          • memory/1552-139-0x0000000000400000-0x00000000007E4000-memory.dmp

            Filesize

            3.9MB

          • memory/1552-140-0x0000000000400000-0x00000000007E4000-memory.dmp

            Filesize

            3.9MB

          • memory/1860-130-0x0000000000890000-0x00000000008A0000-memory.dmp

            Filesize

            64KB

          • memory/1860-131-0x000000001A670000-0x000000001AC88000-memory.dmp

            Filesize

            6.1MB