Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-12-2024 10:54

General

  • Target

    Payload.exe

  • Size

    27KB

  • MD5

    6363fdf6807cbef35f331eee2acd8c95

  • SHA1

    a3c39ca66596d25bb6b49c691348b29f6c7cf582

  • SHA256

    091389e24f8de1ef56cda84cc7f8598767bedf9c4b1dfb73736713b887c259c9

  • SHA512

    b1a56829768578ec64e0ddaa7bd7023075ec8559c1fee57d3103222e0aea42137fce5f8ac4396701c33349af3db39e2d61d8baf00d3baf932681e085e5231f41

  • SSDEEP

    384:gLZeZoTmgEJLbwvqWDbPxZh7M9AQk93vmhm7UMKmIEecKdbXTzm9bVhca16fr6eR:+ENvwy9A/vMHTi9bD

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 32 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payload.exe
    "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\tmp7A4E.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp7A4E.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      PID:2732
    • C:\Windows\SysWOW64\Shutdown.exe
      Shutdown -l
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2248
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x0
    1⤵
      PID:2952
    • C:\Windows\system32\csrss.exe
      %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
      1⤵
      • System Location Discovery: System Language Discovery
      • Enumerates system info in registry
      • Suspicious use of WriteProcessMemory
      PID:1360
    • C:\Windows\system32\winlogon.exe
      winlogon.exe
      1⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1596
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x0
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1616

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Users\Admin\AppData\Local\Temp\tmp7A4E.tmp.exe

      Filesize

      25KB

      MD5

      0a1d11ae40c22ce547fc2dd8f4a0d7bd

      SHA1

      ed60c2818a6f3c18d0e52d5696b68955653197ad

      SHA256

      bcf0dc9325436d2ffd3d19c1ba67ab28769451fea4725603171f6e02efd2337e

      SHA512

      7f94c26fbaf85f1eb88eda2005c73d94d56cf1c1fdfb69fa86b7550d5098a403acb9d52c5ff128302c2733419b30c93fe3c90dad7651a982e779c4e682b4eb05

    • memory/1644-5-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-2-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-0-0x0000000074291000-0x0000000074292000-memory.dmp

      Filesize

      4KB

    • memory/1644-6-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-7-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-1-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-20-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/2732-15-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/2732-16-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/2732-17-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/2732-18-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB

    • memory/2732-19-0x0000000074290000-0x000000007483B000-memory.dmp

      Filesize

      5.7MB