Analysis

  • max time kernel
    101s
  • max time network
    104s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/07/2025, 18:13

General

  • Target

    $PLUGINSDIR/LegacyUpdateNSIS.dll

  • Size

    45KB

  • MD5

    9faba20acb994499221c4066aa5bc043

  • SHA1

    d19d76e98d0e433166d4c8f1f2b6ffbc9443548a

  • SHA256

    afaa11c241ad99d31fe29dc07a0d2190dc0490f21d3bd6399b87498ad1055ec4

  • SHA512

    3a8028e53259e193360b6fb7f49ac4f4ef9d8cf29b0681026ddfb4d5dc62cf35feea8184e05fccf212abf8e37da5b31c80e77ac323aab360ddd5fe827ca49224

  • SSDEEP

    768:sA2nPG+O/ClaFdcHm1skufY1klc7U3hs95sNEuLSoQuS2vRhs9BUHNEuLSoQuSDl:On8aEFdc3kXOy7U3mypL7SqmopL7Sh

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\LegacyUpdateNSIS.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4288
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\LegacyUpdateNSIS.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2452
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 508
        3⤵
        • Program crash
        PID:5656
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 2452 -ip 2452
    1⤵
      PID:4228

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          • memory/2452-0-0x0000000074B90000-0x0000000074B9B000-memory.dmp

            Filesize

            44KB