Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2022, 19:33

General

  • Target
    SHK04567000987654567890000000009879.exe
  • Size 663KB
  • Sample221229-x9h3sshb9z
  • SHA256 1b4322eaa16e3d5e78993498dce2b9e3823bf553055039d328155e1b4f6df00a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Executes dropped EXE 8 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SHK04567000987654567890000000009879.exe
    "C:\Users\Admin\AppData\Local\Temp\SHK04567000987654567890000000009879.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4872
    • \??\c:\users\admin\appdata\local\temp\shk04567000987654567890000000009879.exe 
      c:\users\admin\appdata\local\temp\shk04567000987654567890000000009879.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4824
      • C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe
        "C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe" C:\Users\Admin\AppData\Local\Temp\gofbpa.mha
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4744
        • C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe
          "C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1344
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3220
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • Modifies WinLogon for persistence
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3468
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4632
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • Modifies WinLogon for persistence
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Modifies Installed Components in the registry
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1136
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:3052
            • C:\Windows\SysWOW64\at.exe
              at 20:35 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:2128
              • C:\Windows\SysWOW64\at.exe
                at 20:36 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:2896
                • C:\Windows\SysWOW64\at.exe
                  at 20:37 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:2180

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              cotcmgemj.exe

              • Path C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe
              • Size 63KB
              • SHA256 0cb7515d41e9e1d0676c9bd8a452b3d052d1c229557e653940173a970e1ecf8d
              • MD5 SHA1 SHA512 SSDEEP

              cotcmgemj.exe

              • Path C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe
              • Size 63KB
              • SHA256 0cb7515d41e9e1d0676c9bd8a452b3d052d1c229557e653940173a970e1ecf8d
              • MD5 SHA1 SHA512 SSDEEP

              cotcmgemj.exe

              • Path C:\Users\Admin\AppData\Local\Temp\cotcmgemj.exe
              • Size 63KB
              • SHA256 0cb7515d41e9e1d0676c9bd8a452b3d052d1c229557e653940173a970e1ecf8d
              • MD5 SHA1 SHA512 SSDEEP

              flkvuqfnj.pqv

              • Path C:\Users\Admin\AppData\Local\Temp\flkvuqfnj.pqv
              • Size 223KB
              • SHA256 4c64fd5fdd8ed865753e7fc354e095ef06715d283016471ffd16a4238e1ff713
              • MD5 SHA1 SHA512 SSDEEP

              gofbpa.mha

              • Path C:\Users\Admin\AppData\Local\Temp\gofbpa.mha
              • Size 5KB
              • SHA256 6179af368144934614800d1ae17fa7c6fb736106f392601b1e4eb9c3827f6b90
              • MD5 SHA1 SHA512 SSDEEP

              shk04567000987654567890000000009879.exe 

              • Path C:\Users\Admin\AppData\Local\Temp\shk04567000987654567890000000009879.exe 
              • Size 389KB
              • SHA256 d7e048cf438287b85e45f1b46af59a315372066079942af7111a45b91d15745e
              • MD5 SHA1 SHA512 SSDEEP

              icsys.icn.exe

              • Path C:\Users\Admin\AppData\Local\icsys.icn.exe
              • Size 274KB
              • SHA256 8f8c693446d6b115b8f68ca9fc79bb762fae0f74bd4c5ff26168da100a859aed
              • MD5 SHA1 SHA512 SSDEEP

              icsys.icn.exe

              • Path C:\Users\Admin\AppData\Local\icsys.icn.exe
              • Size 274KB
              • SHA256 8f8c693446d6b115b8f68ca9fc79bb762fae0f74bd4c5ff26168da100a859aed
              • MD5 SHA1 SHA512 SSDEEP

              mrsys.exe

              • Path C:\Users\Admin\AppData\Roaming\mrsys.exe
              • Size 274KB
              • SHA256 b04ff011e979c80beb931dcd8ed629ac7ecf27c5ee19ca4b65c4576ff17bea4c
              • MD5 SHA1 SHA512 SSDEEP

              explorer.exe

              • Path C:\Windows\System\explorer.exe
              • Size 274KB
              • SHA256 21713f217806862c340732c2a8b9c559acbbf3e4c1f8685e3fdce3875c55be41
              • MD5 SHA1 SHA512 SSDEEP

              spoolsv.exe

              • Path C:\Windows\System\spoolsv.exe
              • Size 274KB
              • SHA256 7ea3999bf46149588a4674344617acaacd0449bafb2bd2237b7ac8a0e1fb754c
              • MD5 SHA1 SHA512 SSDEEP

              spoolsv.exe

              • Path C:\Windows\System\spoolsv.exe
              • Size 274KB
              • SHA256 7ea3999bf46149588a4674344617acaacd0449bafb2bd2237b7ac8a0e1fb754c
              • MD5 SHA1 SHA512 SSDEEP

              svchost.exe

              • Path C:\Windows\System\svchost.exe
              • Size 274KB
              • SHA256 234dec3dbdeedfc0182f9eb7324aa40757ec63fcd4cacaa3fee134c3875ee407
              • MD5 SHA1 SHA512 SSDEEP

              shk04567000987654567890000000009879.exe 

              • Path \??\c:\users\admin\appdata\local\temp\shk04567000987654567890000000009879.exe 
              • Size 389KB
              • SHA256 d7e048cf438287b85e45f1b46af59a315372066079942af7111a45b91d15745e
              • MD5 SHA1 SHA512 SSDEEP

              explorer.exe

              • Path \??\c:\windows\system\explorer.exe
              • Size 274KB
              • SHA256 21713f217806862c340732c2a8b9c559acbbf3e4c1f8685e3fdce3875c55be41
              • MD5 SHA1 SHA512 SSDEEP

              spoolsv.exe

              • Path \??\c:\windows\system\spoolsv.exe
              • Size 274KB
              • SHA256 7ea3999bf46149588a4674344617acaacd0449bafb2bd2237b7ac8a0e1fb754c
              • MD5 SHA1 SHA512 SSDEEP

              svchost.exe

              • Path \??\c:\windows\system\svchost.exe
              • Size 274KB
              • SHA256 234dec3dbdeedfc0182f9eb7324aa40757ec63fcd4cacaa3fee134c3875ee407
              • MD5 SHA1 SHA512 SSDEEP

              memory/1136-172-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/1136-193-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/1344-190-0x0000000006750000-0x000000000675A000-memory.dmp

              memory/1344-187-0x0000000005630000-0x00000000056CC000-memory.dmp

              memory/1344-186-0x0000000005BE0000-0x0000000006184000-memory.dmp

              memory/1344-185-0x0000000000400000-0x0000000000437000-memory.dmp

              memory/1344-188-0x00000000068C0000-0x0000000006A82000-memory.dmp

              memory/1344-189-0x0000000006790000-0x0000000006822000-memory.dmp

              memory/3052-176-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/3220-178-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/3220-166-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/3468-169-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/3468-192-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/4632-177-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/4632-170-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/4872-132-0x0000000000400000-0x000000000043E000-memory.dmp

              memory/4872-179-0x0000000000400000-0x000000000043E000-memory.dmp