Analysis

  • max time kernel
    149s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    24/06/2021, 00:51

General

  • Target
    5ba96203fa7be66961318d47cd99f7de.exe
  • Size 37KB
  • Sample210624-cdvstr5e8n
  • SHA256 e11175a6771df0a22bd2fdb04e93daae3ef75539e3fb301a53fd51245a0ff256
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • BitRAT

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

  • BitRAT Payload 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • UAC bypass 3 TTPs
  • Windows security bypass 2 TTPs
  • Nirsoft 14 IoCs
  • Executes dropped EXE 6 IoCs
  • UPX packed file 2 IoCs

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

  • Drops startup file 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Windows security modification 2 TTPs 10 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 37 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 38 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ba96203fa7be66961318d47cd99f7de.exe
    "C:\Users\Admin\AppData\Local\Temp\5ba96203fa7be66961318d47cd99f7de.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Windows security modification
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:344
    • C:\Users\Admin\AppData\Local\Temp\7f1412a8-c147-4320-a5c7-1c08b5d8acb9\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\7f1412a8-c147-4320-a5c7-1c08b5d8acb9\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\7f1412a8-c147-4320-a5c7-1c08b5d8acb9\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Users\Admin\AppData\Local\Temp\7f1412a8-c147-4320-a5c7-1c08b5d8acb9\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\7f1412a8-c147-4320-a5c7-1c08b5d8acb9\AdvancedRun.exe" /SpecialRun 4101d8 1444
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1572
    • 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\5ba96203fa7be66961318d47cd99f7de.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:552
    • 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\5ba96203fa7be66961318d47cd99f7de.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1104
    • 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\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:596
    • 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\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1548
    • 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\5ba96203fa7be66961318d47cd99f7de.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1628
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:740
      • C:\Users\Admin\AppData\Local\Temp\1e5714fc-8fd0-4229-82c1-0631cfef9a5d\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\1e5714fc-8fd0-4229-82c1-0631cfef9a5d\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\1e5714fc-8fd0-4229-82c1-0631cfef9a5d\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2704
        • C:\Users\Admin\AppData\Local\Temp\1e5714fc-8fd0-4229-82c1-0631cfef9a5d\AdvancedRun.exe
          "C:\Users\Admin\AppData\Local\Temp\1e5714fc-8fd0-4229-82c1-0631cfef9a5d\AdvancedRun.exe" /SpecialRun 4101d8 2704
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2752
      • 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\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe" -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2796
      • 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\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe" -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2828
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Public\Documents\47c6a7DPI1cucTca98Ua4P0aa1kN771x80fde9Sd3d4\svchost.exe" -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2864
      • 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\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe" -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2928
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Public\Documents\47c6a7DPI1cucTca98Ua4P0aa1kN771x80fde9Sd3d4\svchost.exe" -Force
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3024
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        3⤵
          PID:1524
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            4⤵
            • Delays execution with timeout.exe
            PID:2228
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9ecf3Y067T0c85D8b6fFg4rjsT62743fDu11adcn8I4k.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of AdjustPrivilegeToken
          PID:1288
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Public\Documents\47c6a7DPI1cucTca98Ua4P0aa1kN771x80fde9Sd3d4\svchost.exe" -Force
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:984
      • 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\5ba96203fa7be66961318d47cd99f7de.exe" -Force
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1424
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Public\Documents\47c6a7DPI1cucTca98Ua4P0aa1kN771x80fde9Sd3d4\svchost.exe" -Force
        2⤵
          PID:1764
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2196
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            3⤵
            • Delays execution with timeout.exe
            PID:2240
        • C:\Users\Admin\AppData\Local\Temp\5ba96203fa7be66961318d47cd99f7de.exe
          "C:\Users\Admin\AppData\Local\Temp\5ba96203fa7be66961318d47cd99f7de.exe"
          2⤵
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2264

      Network

            MITRE ATT&CK Enterprise v6

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            Downloads

            memory/344-60-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

            memory/344-63-0x000000000A090000-0x000000000A265000-memory.dmp

            memory/344-62-0x0000000005150000-0x0000000005151000-memory.dmp

            memory/552-132-0x00000000048F2000-0x00000000048F3000-memory.dmp

            memory/552-124-0x00000000048F0000-0x00000000048F1000-memory.dmp

            memory/552-161-0x0000000005710000-0x0000000005711000-memory.dmp

            memory/552-168-0x00000000062A0000-0x00000000062A1000-memory.dmp

            memory/552-160-0x0000000005670000-0x0000000005671000-memory.dmp

            memory/552-155-0x0000000005610000-0x0000000005611000-memory.dmp

            memory/552-175-0x00000000055D0000-0x00000000055D1000-memory.dmp

            memory/552-154-0x000000007EF30000-0x000000007EF31000-memory.dmp

            memory/552-145-0x0000000005240000-0x0000000005241000-memory.dmp

            memory/596-129-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/596-127-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/596-137-0x0000000002670000-0x0000000002671000-memory.dmp

            memory/740-89-0x0000000000D40000-0x0000000000D41000-memory.dmp

            memory/740-106-0x0000000000420000-0x0000000000421000-memory.dmp

            memory/984-109-0x00000000021F0000-0x0000000002E3A000-memory.dmp

            memory/984-115-0x00000000021F0000-0x0000000002E3A000-memory.dmp

            memory/1104-100-0x00000000022C0000-0x00000000022C1000-memory.dmp

            memory/1104-122-0x00000000048B0000-0x00000000048B1000-memory.dmp

            memory/1104-133-0x00000000048B2000-0x00000000048B3000-memory.dmp

            memory/1424-119-0x0000000000920000-0x0000000000921000-memory.dmp

            memory/1424-121-0x0000000000922000-0x0000000000923000-memory.dmp

            memory/1444-68-0x0000000075211000-0x0000000075213000-memory.dmp

            memory/1548-126-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/1628-128-0x00000000049F2000-0x00000000049F3000-memory.dmp

            memory/1628-123-0x00000000049F0000-0x00000000049F1000-memory.dmp

            memory/1628-108-0x0000000004A30000-0x0000000004A31000-memory.dmp

            memory/2264-143-0x0000000000400000-0x00000000007E5000-memory.dmp

            memory/2264-134-0x0000000000400000-0x00000000007E5000-memory.dmp

            memory/2796-211-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/2828-215-0x00000000048E0000-0x00000000048E1000-memory.dmp

            memory/2828-219-0x00000000048E2000-0x00000000048E3000-memory.dmp

            memory/2864-226-0x0000000004980000-0x0000000004981000-memory.dmp

            memory/2864-227-0x0000000004982000-0x0000000004983000-memory.dmp

            memory/2928-224-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/2928-220-0x0000000001FF0000-0x0000000002C3A000-memory.dmp

            memory/3024-225-0x0000000004982000-0x0000000004983000-memory.dmp

            memory/3024-222-0x0000000004980000-0x0000000004981000-memory.dmp