Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 04:25

General

  • Target

    2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe

  • Size

    71KB

  • MD5

    2bba3977125de893ab5fd1c7383e26d4

  • SHA1

    b4d5e65e34bd85188d9456a89a5f04cbede42e6d

  • SHA256

    3cc717b344f1164fe5eaff17596dfd2ce49ba8ab50cf07bf068c5df52a1c8d0f

  • SHA512

    a306d421137682cc04adea7a6ad12a635b5215e93251b02cbf27ccf0711d17e8daaa04cdbabcec9bd7c7e26a5687dfa48d8fab52239c0631741c58b44fa3474f

  • SSDEEP

    1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9:ZhpAyazIlyazT9

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_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2980
    • 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:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CIExugmqw72J1cU.exe

    Filesize

    71KB

    MD5

    63a05f3172c8a0373029e3e380fd31cb

    SHA1

    aa9665b992af1f4386545eb0e2c7d5713f5d0bb2

    SHA256

    c056632539c6288763487dac272a276b7c29284ffbc9e5079dfe5876353fc8f9

    SHA512

    5e2da67e9ef7e03a0d5e70713a8c6a692c73cbbbd3dad19db3f23bfcac7ad6c955da587034b570507d800c544ddd7c13af1ae63386093f4f1dd75fe0410671fd

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25