Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2024, 17:59

General

  • Target
    $PLUGINSDIR/nsArray.dll
  • Size 12KB
  • Sample240309-wkpcvaeb57
  • SHA256 072086de8c1d354733b4f3555482656728e0a26be715e76b90c3a71faac7f8f6
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
upx

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\nsArray.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4484
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsArray.dll,#1
      2⤵
        PID:2184
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2184 -s 600
          3⤵
          • Program crash
          PID:768
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2184 -ip 2184
      1⤵
        PID:4460

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/2184-0-0x0000000074AA0000-0x0000000074AAA000-memory.dmp

            memory/2184-1-0x0000000074AA0000-0x0000000074AAA000-memory.dmp