Analysis

  • max time kernel
    51s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/06/2024, 14:11

General

  • Target
    $PLUGINSDIR/nsRandom.dll
  • Size 21KB
  • Sample240625-rhphlsvarg
  • SHA256 db267d9920395b4badc48de04df99dfd21d579480d103cae0f48e6578197ff73
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10
upx

Malware Config

Signatures

  • 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\nsRandom.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
      2⤵
        PID:4352
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4352 -s 620
          3⤵
          • Program crash
          PID:1328
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4352 -ip 4352
      1⤵
        PID:4692

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/4352-0-0x0000000000400000-0x0000000000412000-memory.dmp

            memory/4352-1-0x0000000000400000-0x0000000000412000-memory.dmp