Analysis

  • max time kernel
    177s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-12-2023 07:54

General

  • Target

    a99b1e48221b678c4da6621cc645bf0f.exe

  • Size

    697KB

  • MD5

    a99b1e48221b678c4da6621cc645bf0f

  • SHA1

    abbf4d11dc1ea12cdb96a13ac3fb9c7978dc078b

  • SHA256

    1ea24c494567b22d017f86556288372e708d7cfacd45472aa45568bd5102b271

  • SHA512

    ac15d68dfdc70224c698bd5515c60425d4ea202853e9504382ce950e31fa89213d132bac8cca8eec60d298ba20c6fdfb458b72450185a1b5d1e5f1fe9a0d86aa

  • SSDEEP

    12288:tirqB1AG3coGYUoQdqqJ6/uxOuMve/VOPhfFDwYl2vzcBtMmcRpaBtDnegA+G9bp:IM1AGcoktdqX/u/kPNF9lkHmWaBtn2bp

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a99b1e48221b678c4da6621cc645bf0f.exe
    "C:\Users\Admin\AppData\Local\Temp\a99b1e48221b678c4da6621cc645bf0f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2404
    • C:\Users\Admin\AppData\Local\Temp\Keygen.exe
      "C:\Users\Admin\AppData\Local\Temp\Keygen.exe"
      2⤵
      • Executes dropped EXE
      PID:4696
    • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
      "C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\SysWOW64\ipconfig.exe
        "C:\Windows\System32\ipconfig.exe" /release
        3⤵
        • Gathers network information
        PID:368
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 692
        3⤵
        • Program crash
        PID:4544
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x2f8 0x2fc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2764
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1856 -ip 1856
    1⤵
      PID:3080

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Keygen.exe

      Filesize

      217KB

      MD5

      df5a77b4574b4034aa7bb632d80bcf98

      SHA1

      18b02e09b573806a4c14919755aea053a48846a7

      SHA256

      5734ec906648d40a255b5e22e77fea99f1bb2cc237dc506549a5259e9f0da08c

      SHA512

      4833e80cc50349ec37af8f408841687db4ce5b66fe185b12d7c564f5f45799bea6a35adbf655d2630436be246a6bb7a91dd2cf50c552848b24895b7dfa21506a

    • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe

      Filesize

      548KB

      MD5

      4d6bc1d7974c06161e1ed65c7f0a20a8

      SHA1

      1a98ef9a70d39f916a81e0e8c9cf95c8c145744b

      SHA256

      024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c

      SHA512

      c2d1b78364de65346e64e0fd0bed87c4ab110de1e03705b68489503f5069053a647d478c7b0c5217cc8f9f40fe39deceb2c809a714a92ffc8c741d273799e5ee

    • memory/1856-29-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/1856-24-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/4696-30-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-27-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-31-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-26-0x00000000001D0000-0x00000000001D2000-memory.dmp

      Filesize

      8KB

    • memory/4696-32-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-28-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-10-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-33-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-25-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-23-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-18-0x00000000001D0000-0x00000000001D2000-memory.dmp

      Filesize

      8KB

    • memory/4696-34-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-35-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-36-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-37-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-38-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB

    • memory/4696-39-0x0000000000400000-0x000000000045A000-memory.dmp

      Filesize

      360KB