Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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
    _overlapped.dll
  • Size 25KB
  • Sample260908-x6t1wsgn21
  • SHA256 59a161ebd0da3f6b106e88388510c9f323fbbbfbff37c3cb2cc77ddb2e3f0974
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10

Malware Config

Signatures

  • UPX packed file 5 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\_overlapped.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\_overlapped.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1884
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1884 -s 628
        3⤵
        • Program crash
        PID:4924
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1884 -ip 1884
    1⤵
      PID:4396

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/1884-0-0x0000000074950000-0x000000007495F000-memory.dmp

          memory/1884-1-0x00000000743A0000-0x000000007494D000-memory.dmp

          memory/1884-2-0x0000000074350000-0x000000007436A000-memory.dmp

          memory/1884-3-0x0000000074950000-0x000000007495F000-memory.dmp

          memory/1884-6-0x00000000743A0000-0x000000007494D000-memory.dmp