Windows 7 deprecation

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Analysis

  • max time kernel
    162s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2024, 17:51

General

  • Target

    170b721a9b25607c0c7dbaa962201bfea68d171598e2dc514f901b557daa045d.exe

  • Size

    76KB

  • MD5

    3c0a8699172d7886b98c5399ca95a5fa

  • SHA1

    611613328460301f4659b78f22b6582b13aae43b

  • SHA256

    170b721a9b25607c0c7dbaa962201bfea68d171598e2dc514f901b557daa045d

  • SHA512

    b0d8fe7602dc819e2f404e6365a11e2fc0eb6cc6339a10df0b3230888db57dc9951e0357f7edc32f2aa12883ed35dddb44b2b4acaa348bec7bfb79534870af81

  • SSDEEP

    768:QM34MSL0OXIxDMyDRjFVZrhgFwumSCbxTGy/BBGg4NK8jhh/vn2+mRcDkUCXVBno:74M1OX8MUu3abBGy3G8srcfu

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 62 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\170b721a9b25607c0c7dbaa962201bfea68d171598e2dc514f901b557daa045d.exe
    "C:\Users\Admin\AppData\Local\Temp\170b721a9b25607c0c7dbaa962201bfea68d171598e2dc514f901b557daa045d.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1696
    • \??\c:\Documents and Settings\Admin\Application Data\Microsoft\vc.exe
      "c:\Documents and Settings\Admin\Application Data\Microsoft\vc.exe" 170b721a9b25607c0c7dbaa962201bfea68d171598e2dc514f901b557daa045d
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Modifies system executable filetype association
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\windows\SysWOW64\maxtrox.txt

    Filesize

    8B

    MD5

    24865ca220aa1936cbac0a57685217c5

    SHA1

    37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

    SHA256

    841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

    SHA512

    c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

  • \Users\Admin\AppData\Roaming\Microsoft\vc.exe

    Filesize

    76KB

    MD5

    eed77344ea3e7c23b9b031458c313f99

    SHA1

    a149a287af0c5c94eeeec8775272f9fab9eed51e

    SHA256

    3da25ce982322f9644fca0ccae834f009a751379beb9b0f091e2ac6212e34174

    SHA512

    e7dfdca99ec6b81df6d1abf46aa3b70dbcdab2de9cb9eb1fb60eecd8de2a8b04bac2780f0a4ae07babf65cac9bc940767bfc6fde68464ec997d4e9773ca72cc5