Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    26/08/2026, 21:46

General

  • Target
    $PLUGINSDIR/UserInfo.dll
  • Size 4KB
  • Sample260826-1mlrysvsbw
  • SHA256 0893c4d31c7d9c2106eea64f10d6b17a00b742727662a883c39990bcee6a7d15
  • MD5 SHA1 SHA512 TLSH
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 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\UserInfo.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\UserInfo.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 612
        3⤵
        • Program crash
        PID:708
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4964 -ip 4964
    1⤵
      PID:2460

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads