Analysis

  • max time kernel
    150s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2025, 08:18

General

  • Target

    PO# ENQ8864.Pdf.exe

  • Size

    1.2MB

  • MD5

    ce5d04c4d15b7ae968c0f2cd2a81387d

  • SHA1

    4d7334d66cdff4a0f1c3ddce81db245a1e3469c2

  • SHA256

    74feceb928f3cd0ca47312eac2718f4210bce399335fd341bdeb456b2a09a230

  • SHA512

    4f2e621a18373f71fdcb583e4c0777be10913ec41647f12919efef5b54d762170199e2e84e347f84a447f388ba3f1b61336f0d1e607988a3b0b061645f58445e

  • SSDEEP

    24576:K5xolYQY6Du6J33O0c+JY5UZ+XC0kGso6Faa1Bs3jWY3:dYSu0c++OCvkGs9FaavsSY3

Malware Config

Extracted

Family

vipkeylogger

Credentials
C2

https://api.telegram.org/bot7391124277:AAEAD7k2_c00owq0kQIitLTWNNPqqi9m41c/sendMessage?chat_id=7128988401

Signatures

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

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Executes dropped EXE 6 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 6 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO# ENQ8864.Pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PO# ENQ8864.Pdf.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5084
    • \??\c:\users\admin\appdata\local\temp\po# enq8864.pdf.exe 
      "c:\users\admin\appdata\local\temp\po# enq8864.pdf.exe "
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "c:\users\admin\appdata\local\temp\po# enq8864.pdf.exe "
        3⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4448
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1404
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • Modifies WinLogon for persistence
        • Modifies visiblity of hidden/system files in Explorer
        • Boot or Logon Autostart Execution: Active Setup
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2788
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:412
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • Modifies WinLogon for persistence
            • Modifies visiblity of hidden/system files in Explorer
            • Boot or Logon Autostart Execution: Active Setup
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2276
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:2268
            • C:\Windows\SysWOW64\at.exe
              at 08:20 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:2504
            • C:\Windows\SysWOW64\at.exe
              at 08:21 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4784
            • C:\Windows\SysWOW64\at.exe
              at 08:22 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\po# enq8864.pdf.exe 

    Filesize

    990KB

    MD5

    09116ff12f2338350afa3daa9456fd82

    SHA1

    2dee1fc92e2c16b7ae08df60c20b009535a934c8

    SHA256

    a2348624313de5d142fb8bea25335b37aa7ce22515e55d63093830b23d8aee75

    SHA512

    7e8dbd9791163ff7dfbb3a31abf32cfc69794e6b7e8d0b0ff454895e7d2e060decdd13a79ba96beb8400120c4952b8e96287dbda9b56696bd1c379a5ebed2138

  • C:\Users\Admin\AppData\Local\icsys.icn.exe

    Filesize

    274KB

    MD5

    24a924dc08b89e69e1319e9489a65614

    SHA1

    6e8b3b374ab5ec6f1e282151a002b35ed0f200e4

    SHA256

    67eb69b20adc8794c6e7fce09ca2366e086f3421c081cff6711df1a8bd9c03b6

    SHA512

    c1b7fce1e07b967bddd806f024278d7aee950ebeff5e03e9fd219baff10b2ae28de15c47327feef4cc1057a9187866f5bae1e7b35b3d1236971ffcedca4a9665

  • C:\Users\Admin\AppData\Roaming\mrsys.exe

    Filesize

    274KB

    MD5

    7d8f41e2d6225f8a3da6c2c9e44769aa

    SHA1

    49ce8c21aa84b86c07965038900f4e7e268ab13b

    SHA256

    3344be325f6c69c98e54de87a5d487a13cfb0ba9b57e31f34b1f5f5c61b7fe65

    SHA512

    d35680ae07eea0f083856fcb38cf7722ac856738c07261d5df8ece708f24cf013bf548854f15d7534796003db463f0fca75b6c30d314660a6d0634a0db1277cd

  • C:\Windows\System\explorer.exe

    Filesize

    274KB

    MD5

    401d39fd7eeb04690489e41e2b27f59f

    SHA1

    6b0f32bb171016c622f4e0d525e60c10e5b38a99

    SHA256

    4f006a8208eab488947ea57967a2a7667ba017f48ed23e10d31686eea99c3be1

    SHA512

    97219837fc21d3e1359f3cc2c07a08e5f1deb919308dd76159188816ba6279fbba711c80e31ee8d1f954081b191e1efcc0a5b0d12b4aaefb965c6fe021f158ad

  • C:\Windows\System\svchost.exe

    Filesize

    274KB

    MD5

    806dd47475bb8379054e77f3be0272bf

    SHA1

    a9ecba4e68ca9109cbc84b347294d16a618e4a47

    SHA256

    684c2a31c615fc7d5cdaa3904cb621e7fb846a2035fbad86ec46e746672bdb7c

    SHA512

    af0a008bdf80265f1912ade00e457f43c50d20c15d588f4b749a0cb80bb2561078817c76261390ac55b78e11d372c89e7ed46665d1bde06142e310f38ab2b1d0

  • \??\c:\windows\system\spoolsv.exe

    Filesize

    274KB

    MD5

    d00a619e0b51dc8e3c76947a7df816a1

    SHA1

    726ee5bdb4c0c8a9d21a560ed9a2083fa98f6c2f

    SHA256

    0425857b4f70f112486bfde6f3d588bd5e7d9dd659beb8644cbcffdd757b2c2f

    SHA512

    6e0e3bc35a8f44a52d5a0e8bec78cf2e0106351b371cc4c1d8ecef35a716eae3ef07deae9c3785b3516ab5b0ec67383e8248040c2d2915165122292135396caa

  • memory/412-57-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/1404-22-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/1404-58-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2268-54-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2276-70-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2788-69-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/4448-64-0x00000000063A0000-0x0000000006562000-memory.dmp

    Filesize

    1.8MB

  • memory/4448-62-0x0000000005620000-0x0000000005BC4000-memory.dmp

    Filesize

    5.6MB

  • memory/4448-63-0x0000000005070000-0x000000000510C000-memory.dmp

    Filesize

    624KB

  • memory/4448-65-0x0000000006240000-0x0000000006290000-memory.dmp

    Filesize

    320KB

  • memory/4448-66-0x0000000006AA0000-0x0000000006FCC000-memory.dmp

    Filesize

    5.2MB

  • memory/4448-67-0x0000000006570000-0x0000000006602000-memory.dmp

    Filesize

    584KB

  • memory/4448-68-0x0000000000E60000-0x0000000000E6A000-memory.dmp

    Filesize

    40KB

  • memory/4448-61-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/5084-0-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/5084-59-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB