Analysis

  • max time kernel
    104s
  • max time network
    106s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250610-en
  • resource tags

    arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/07/2025, 17:56

General

  • Target

    $PLUGINSDIR/nsUnzip.dll

  • Size

    178KB

  • MD5

    bde32fc5dcc9d98520c95fc23fa7bc92

  • SHA1

    e81891aa3f6e500c33474c21ff324083cbb50fcd

  • SHA256

    1fa8f2dfbe9fb83c0660e25e193e5aa09e1d4cd4af4f62e056b2930eb595c4c9

  • SHA512

    99b8d5671fe0a6d6b3a660fd94cef91a69f20863bff2faaae686a673c15789d3d52dbc44c9699fa90f13f4af7d1bfb40c6449d73f608d9c6b5c1fffbf29383b3

  • SSDEEP

    3072:97AFxQv5aD8vzH4upPcj/n/TEUruv/H3cwvZmBMRKqm5wJqb:97nXzpPOooAH3cwvZkcPPob

Score
3/10

Malware Config

Signatures

  • 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 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsUnzip.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5552
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsUnzip.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3768
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3768 -s 468
        3⤵
        • Program crash
        PID:5952
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3768 -ip 3768
    1⤵
      PID:6012

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads