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Analysis

  • max time kernel
    144s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 17:14

General

  • Target

    99b2524201019dcaa4af6dbec583a03a.exe

  • Size

    999KB

  • MD5

    99b2524201019dcaa4af6dbec583a03a

  • SHA1

    6bc7ad7dc330a0be9c5d3e2430faac029e37ff79

  • SHA256

    f41d33f178d1b002d6d18a0ee48171177dd29d4da34babd169133926278c23b8

  • SHA512

    799354de7603d6e2a6a5ea64ee00ecd749fe522740af2b52bd0794b59c38bcea55e320960cc9594613a272d6db8aebde4b05c59e2f6d7ef6e742c54fb319ab7b

  • SSDEEP

    24576:2gbK6ecdXiy29560adcpUIGQDo4zceDcQGV5+Im00:iK4UIGQ8blcIm

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99b2524201019dcaa4af6dbec583a03a.exe
    "C:\Users\Admin\AppData\Local\Temp\99b2524201019dcaa4af6dbec583a03a.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3416
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Updater.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Updater.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Windows\system32\mswinsck.ocx"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:4032
      • C:\Windows\SysWOW64\Updater.exe
        C:\Windows\system32\Updater.exe
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1136
        • C:\Windows\SysWOW64\Updater.exe
          C:\Windows\system32\Updater.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:3744
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\basic_clipart.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\basic_clipart.exe
      2⤵
      • Executes dropped EXE
      PID:1940

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Updater.exe

    Filesize

    160KB

    MD5

    366878b4d0fcf4a2c1d3c98d0a9ce859

    SHA1

    f9e43e033a8ba7e4f767edc61e94d476681604b5

    SHA256

    03cc72c95188163d0137cf0e5443ddd86288e312ee1b493b7487fa2aa17a2b30

    SHA512

    45e3e4bc53743fbcd1ea251d1673b216e616a5bc6aec0f1be607d92586717d3401b9bb37922dddbdcb4df843658906e2ad946569dba1032d553a16c49714aa34

  • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\basic_clipart.exe

    Filesize

    886KB

    MD5

    1f08b95c449f60622bd52bb91cc91f08

    SHA1

    d385bb52fa6e22d04257c1188aabfed7c6d7929a

    SHA256

    aa7f99a7c66dae965214da2a71d7dc3269bf67e51a368bc963284b2921e1c065

    SHA512

    d610cf6a137cc36e7855800b94c0e0239b1076fedcf17eadba603ca585b6c8ed392c6fd7a18e5f45e0ae6515ed6a8823dafd9dda69af51549e0648e90b059533

  • C:\Windows\SysWOW64\mswinsck.ocx

    Filesize

    105KB

    MD5

    9484c04258830aa3c2f2a70eb041414c

    SHA1

    b242a4fb0e9dcf14cb51dc36027baff9a79cb823

    SHA256

    bf7e47c16d7e1c0e88534f4ef95e09d0fd821ed1a06b0d95a389b35364b63ff5

    SHA512

    9d0e9f0d88594746ba41ea4a61a53498619eda596e12d8ec37d01cfe8ceb08be13e3727c83d630a6d9e6d03066f62444bb94ea5a0d2ed9d21a270e612db532a0

  • memory/1940-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1940-26-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB