Analysis

  • max time kernel
    137s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 09:05

General

  • Target

    YY5331过非法VE/dak31.dll

  • Size

    232KB

  • MD5

    23aa676c5b6f91bfffa41cdd28f1afd1

  • SHA1

    ad10842b3f6211b50416c3568b40c2400dbb94e0

  • SHA256

    dc639cf3f8ad5a6875053f3719a88a9f50a18e92a9d3668cd5d8eecd094558ba

  • SHA512

    b9e47522d43ff57b72216ae93c9ea1f53d572d1ee6e28457d8439daf5048024ffd091a38df2fa8ca9869f949efb8c23427d33f0dfc24003a971a4050a77fcfb3

  • SSDEEP

    3072:H12+JqqGu1Bl0t05Np2dlUX0+Cx17F8QRJZKmOK3outKF/Z/A3fe0dSSxmG:HbJq/cBdFwT7SMJMzUoSS/Zsdfx

Score
7/10
upx

Malware Config

Signatures

  • UPX packed file 3 IoCs

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

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

Processes

  • C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\YY5331过非法VE\dak31.dll,#1
    1⤵
      PID:4228
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 600
        2⤵
        • Program crash
        PID:2336
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\YY5331过非法VE\dak31.dll,#1
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:3052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4228 -ip 4228
      1⤵
        PID:1232

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4228-3-0x0000000000BE0000-0x0000000000C1D000-memory.dmp

        Filesize

        244KB

      • memory/4228-2-0x0000000000BE0000-0x0000000000C1D000-memory.dmp

        Filesize

        244KB

      • memory/4228-0-0x0000000000BE0000-0x0000000000C1D000-memory.dmp

        Filesize

        244KB