Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 4 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:1632
    • 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:2744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\DX6NVYHW6VcX9vY.exe

    Filesize

    71KB

    MD5

    cc004b9079f965679a078e477f3e6627

    SHA1

    ee2c04a1cb8b2081920420fd816f7a50e6b9d160

    SHA256

    fdd347a2626a159e61255be450bd8f7e35d323b3e88f8042b5277c25c5c568fd

    SHA512

    b5b37e6578d60d0813dcc1c725fa773f5571efbefe75b0e4111d7e7d4addaa18fa43b5377b2f4f7d07e978a97685733a884a88d01fab51bff3116c37a7bf0f11

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25