Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 12:56

General

  • Target
    b8c800c5a22fbeeb183eecb3b5759470.exe
  • Size 180KB
  • Sample240307-p6bkjsce5v
  • SHA256 8e6d2164679243b757ed0a1610e399db7b5b24bcba098926e67f3a49c51fcde7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ardamax

    A keylogger first seen in 2013.

  • Ardamax main executable 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8c800c5a22fbeeb183eecb3b5759470.exe
    "C:\Users\Admin\AppData\Local\Temp\b8c800c5a22fbeeb183eecb3b5759470.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Windows\SysWOW64\NSK.exe
      "C:\Windows\system32\NSK.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4696

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        @3836.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\@3836.tmp
        • Size 4KB
        • SHA256 1dabedfe9c7cda2d8aa74c95ba57fb832a4066b20f4051c0330b4422de237eb3
        • MD5 SHA1 SHA512

        NSK.001

        • Path C:\Windows\SysWOW64\NSK.001
        • Size 1KB
        • SHA256 cc16ab4af9a916b576afc200f553daf4a1656d7af3a9752d1ce171f8c26e7b9a
        • MD5 SHA1 SHA512

        NSK.006

        • Path C:\Windows\SysWOW64\NSK.006
        • Size 4KB
        • SHA256 6a28449ee15745e772f877b6133913325400a2ca3dbf829d76cf42e0c8d6da4c
        • MD5 SHA1 SHA512 SSDEEP

        NSK.007

        • Path C:\Windows\SysWOW64\NSK.007
        • Size 6KB
        • SHA256 f16ca7e5533eb28fa882eb500add2a936f8d0a705cfc9f4e6c8f4c522a2cf6db
        • MD5 SHA1 SHA512 SSDEEP

        NSK.exe

        • Path C:\Windows\SysWOW64\NSK.exe
        • Size 239KB
        • SHA256 c742feab59b4e1b7b188b02ed91ab34eaeb83c87ac6babfb5f08649ed2b8cd02
        • MD5 SHA1 SHA512 SSDEEP