Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/09/2026, 19:28

General

  • Target
    _ctypes.dll
  • Size 50KB
  • Sample260908-x6t1wsgn21
  • SHA256 bc9ea0c80da228afbb112b2103f2f7872981e00b617281db956fde29c96804d3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10

Malware Config

Signatures

  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\_ctypes.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\_ctypes.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3336
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3336 -s 640
        3⤵
        • Program crash
        PID:3684
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3336 -ip 3336
    1⤵
      PID:5072

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/3336-0-0x0000000074D80000-0x0000000074DA0000-memory.dmp

          memory/3336-1-0x0000000074D70000-0x0000000074D7D000-memory.dmp

          memory/3336-3-0x0000000074770000-0x000000007478A000-memory.dmp

          memory/3336-2-0x00000000747A0000-0x0000000074D4D000-memory.dmp

          memory/3336-4-0x0000000074D80000-0x0000000074DA0000-memory.dmp

          memory/3336-8-0x0000000074D70000-0x0000000074D7D000-memory.dmp

          memory/3336-9-0x00000000747A0000-0x0000000074D4D000-memory.dmp