Analysis

  • max time kernel
    134s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 01:06

General

  • Target

    $PLUGINSDIR/jsis.dll

  • Size

    127KB

  • MD5

    4b27df9758c01833e92c51c24ce9e1d5

  • SHA1

    c3e227564de6808e542d2a91bbc70653cf88d040

  • SHA256

    d37408f77b7a4e7c60800b6d60c47305b487e8e21c82a416784864bd9f26e7bb

  • SHA512

    666f1b99d65169ec5b8bc41cdbbc5fe06bcb9872b7d628cb5ece051630a38678291ddc84862101c727f386c75b750c067177e6e67c1f69ab9f5c2e24367659f4

  • SSDEEP

    3072:J3Zk9fOAewM0+W8NVH28fB948igEWo8P+fidXs:J3qNOApM1G8fBpidWZ

Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsis.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1412
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsis.dll,#1
      2⤵
        PID:1520
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 632
          3⤵
          • Program crash
          PID:4100
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1520 -ip 1520
      1⤵
        PID:5096

      Network

      MITRE ATT&CK Matrix

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      Downloads