Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 03:52

General

  • Target

    2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe

  • Size

    71KB

  • MD5

    e3e22c3ade7b7fba3affee9afd606415

  • SHA1

    60b5ea0a2fffa52f6ccdcf3f908ef67ef7b3940d

  • SHA256

    ebce197b826e30c0206f28e62edfef1d624cd290345d229812b4377396020b6a

  • SHA512

    1b3a5fa26b307cbd934b9232102738443dff0f0798e4ef5b4ffadf8402460ff9107fefcfe266fc18c308289d88af4bf24742f49ffdd2bac59403a10b959520af

  • SSDEEP

    1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTM:ZhpAyazIlyazTM

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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:3780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

    Filesize

    392KB

    MD5

    1b0fdfeea83ad199b45aea68c657656c

    SHA1

    346461d6bcb6887c14c4a7648e403fe365b25a6e

    SHA256

    4bf9fc6dc903d8b3c0d7d3a742a9e3f0171c201b6b8bab62072becbf0a7df597

    SHA512

    1f2577ae9e559eefcbe8cb05a6904ae00cc74ec86bfb8b8ba6ad3befa7f2d34771b1d79e397067d4c2391acff82501427b8b4c32672215c1f3156e219b7c9fc8

  • C:\Users\Admin\AppData\Local\Temp\Hur0bPoAAGhsCU5.exe

    Filesize

    71KB

    MD5

    436b9ecaa9855d2ffe3d40ed46b9e35c

    SHA1

    5067bd2a34093b6f268f902c1e62b7a7cb70870e

    SHA256

    7880c230030dd4df4df98bee91ef44cfac8a3176fb9d8ede08b53f60634f49ac

    SHA512

    16ef627cd3191f700cd03fc89ee4bc4216c8c18a017e8008b3b0ac77de15f85dce92f958edb249706eef6f62d6ef9f6f509366fd219fedc489cc946a16dc9967

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25