Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2022, 23:48

General

  • Target
    87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
  • Size 584KB
  • Sample221122-3tqetsdb79
  • SHA256 87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Imminent RAT

    Remote-access trojan based on Imminent Monitor remote admin software.

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
    "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
      "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1356
      • C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
        "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3052
        • C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
          "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
          4⤵
          • Executes dropped EXE
          PID:4596
        • C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
          "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:4116
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d explorer.exe,"C:\Users\Admin\AppData\Roaming\Win Update\Win Update.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1236
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d explorer.exe,"C:\Users\Admin\AppData\Roaming\Win Update\Win Update.exe"
            5⤵
            • Modifies WinLogon for persistence
            PID:1996
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 1000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3776
        • C:\Windows\SysWOW64\PING.EXE
          ping 1.1.1.1 -n 1 -w 1000
          4⤵
          • Runs ping.exe
          PID:4340
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d explorer.exe,"C:\Users\Admin\AppData\Roaming\Win Update\Win Update.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3496
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d explorer.exe,"C:\Users\Admin\AppData\Roaming\Win Update\Win Update.exe"
        3⤵
        • Modifies WinLogon for persistence
        PID:208

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe.log
        • Size 319B
        • SHA256 7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7
        • MD5 SHA1 SHA512

        87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
        • Size 584KB
        • SHA256 87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf
        • MD5 SHA1 SHA512 SSDEEP

        87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
        • Size 584KB
        • SHA256 87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf
        • MD5 SHA1 SHA512 SSDEEP

        87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
        • Size 584KB
        • SHA256 87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf
        • MD5 SHA1 SHA512 SSDEEP

        87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf\87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf.exe
        • Size 584KB
        • SHA256 87301581b1855777311b4f2952cd20b2b7587fb23f4f980151e7e27f3b1654bf
        • MD5 SHA1 SHA512 SSDEEP

        memory/1356-145-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/1356-136-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/1356-135-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/3052-146-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/3052-143-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/4116-155-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/4116-156-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/4872-132-0x0000000075270000-0x0000000075821000-memory.dmp

        memory/4872-133-0x0000000075270000-0x0000000075821000-memory.dmp