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Analysis

  • max time kernel
    126s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/06/2024, 20:03

General

  • Target

    2024-06-28_5b9a1b105f3959739b4757f277d9cf7c_bkransomware.exe

  • Size

    731KB

  • MD5

    5b9a1b105f3959739b4757f277d9cf7c

  • SHA1

    719b11025433aaeef3f8b11fef0e642eaeca8824

  • SHA256

    068fdfd27ba3ef64b297367735c43666c746315cb94ad6767eaf7383c0b9961f

  • SHA512

    72bb5b52a8d980342d2d2a5da4760e38fd053bdc37d8b60b3b2c4ceb99192f6fca016b7d1efafa466d4f47fa46360ffd6e6d9df5bd0ff28f2c8e996ca619c49d

  • SSDEEP

    12288:ndiM1tQZfx4ZZA9xihvuuMwJKuR2SSsMO:ndiM1KYwgmIKuR2SSM

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in System32 directory 58 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-28_5b9a1b105f3959739b4757f277d9cf7c_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-28_5b9a1b105f3959739b4757f277d9cf7c_bkransomware.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3496
    • C:\Users\Admin\AppData\Local\Temp\71D4.tmp
      C:\Users\Admin\AppData\Local\Temp\71D4.tmp
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      PID:1804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\71D4.tmp

    Filesize

    145KB

    MD5

    c610e7ccd6859872c585b2a85d7dc992

    SHA1

    362b3d4b72e3add687c209c79b500b7c6a246d46

    SHA256

    14063fc61dc71b9881d75e93a587c27a6daf8779ff5255a24a042beace541041

    SHA512

    8570aad2ae8b5dcba00fc5ebf3dc0ea117e96cc88a83febd820c5811bf617a6431c1367b3eb88332f43f80b30ebe2c298c22dcc44860a075f7b41bf350236666

  • memory/3496-0-0x0000000000650000-0x0000000000697000-memory.dmp

    Filesize

    284KB

  • memory/3496-1-0x0000000000650000-0x0000000000697000-memory.dmp

    Filesize

    284KB