Analysis

  • max time kernel
    138s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 02:08

General

  • Target
    $PLUGINSDIR/StdUtils.dll
  • Size 100KB
  • Sample240505-ckskqabc71
  • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
  • MD5 SHA1 SHA512 SSDEEP
Score
3/10

Malware Config

Signatures

  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\StdUtils.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\StdUtils.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2368 -s 628
        3⤵
        • Program crash
        PID:4440
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2368 -s 628
        3⤵
        • Program crash
        PID:1112
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2368 -ip 2368
    1⤵
      PID:4208
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2204

      Network

            MITRE ATT&CK Matrix

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