Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    08/05/2022, 06:13

General

  • Target

    d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe

  • Size

    4.2MB

  • MD5

    24389427385fcb96d62cacbcbc86249e

  • SHA1

    8f0e2ba854091afd15c846fb3d35cc3930633d67

  • SHA256

    d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125

  • SHA512

    0fd000e30ca04f227f540d3e34e8985668c95ab5168681327c0e8c1b609b1831c9dbb26ddfcb044fe8dc675f69f2193b381a41b2736940c92dd2dc16b4bd1ede

Malware Config

Signatures

  • BitRAT

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

  • BitRAT Payload 9 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Windows security bypass 2 TTPs
  • Drops startup file 2 IoCs
  • Windows security modification 2 TTPs 9 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 26 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.

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe
    "C:\Users\Admin\AppData\Local\Temp\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:780
    • C:\Windows\SysWOW64\timeout.exe
      timeout 4
      2⤵
      • Delays execution with timeout.exe
      PID:968
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:524
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1840
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1588
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1728
    • C:\Users\Admin\AppData\Local\Temp\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe
      "C:\Users\Admin\AppData\Local\Temp\d7c23da50a0ae8ebcdf3bc384e6498d09264bb051877e44840903f9039e45125.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 780 -s 1840
      2⤵
      • Program crash
      PID:1664

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

          Filesize

          7KB

          MD5

          3533292edb8d69a6cb99b664126761f9

          SHA1

          a1e39a951fb8c856bb305277c5ffbce6f0876892

          SHA256

          a8a0eb5bb2d52ca08a23b8f712b0063e4a3598ad5b4e9529d657242b8e06f646

          SHA512

          1e4654ad4716b82546efdf76d77610e30cf07cbdffa8dc23de95e574ef904eed7a71988d32a92e7a4422b737373441125328d6fa74e2831dee8a241b8ce6dec8

        • memory/524-68-0x000000006F5D0000-0x000000006FB7B000-memory.dmp

          Filesize

          5.7MB

        • memory/780-54-0x000000000F270000-0x000000000F6B0000-memory.dmp

          Filesize

          4.2MB

        • memory/780-55-0x0000000076531000-0x0000000076533000-memory.dmp

          Filesize

          8KB

        • memory/780-57-0x0000000004B60000-0x0000000004F70000-memory.dmp

          Filesize

          4.1MB

        • memory/1588-67-0x000000006F5D0000-0x000000006FB7B000-memory.dmp

          Filesize

          5.7MB

        • memory/1728-69-0x000000006F5D0000-0x000000006FB7B000-memory.dmp

          Filesize

          5.7MB

        • memory/1840-70-0x000000006F5D0000-0x000000006FB7B000-memory.dmp

          Filesize

          5.7MB

        • memory/1960-81-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-74-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-76-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-78-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-80-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-71-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-83-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-85-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-88-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-72-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB

        • memory/1960-90-0x0000000000400000-0x00000000007FF000-memory.dmp

          Filesize

          4.0MB