Analysis

  • max time kernel
    298s
  • max time network
    295s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-de
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-delocale:de-deos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/08/2026, 11:13

General

  • Target
    $PLUGINSDIR/api-ms-win-crt-heap-l1-1-0.dll
  • Size 18KB
  • Sample260807-nbv52acn21
  • SHA256 4ac8f0aeb61d87847f440182814dd44632e1be3c11798c7b8f952380435a4f6c
  • MD5 SHA1 SHA512 SSDEEP 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\api-ms-win-crt-heap-l1-1-0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\api-ms-win-crt-heap-l1-1-0.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4868
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4868 -s 496
        3⤵
        • Program crash
        PID:4248
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4868 -ip 4868
    1⤵
      PID:2704

    Network

          MITRE ATT&CK Enterprise v16

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