Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 03:51

General

  • Target

    2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe

  • Size

    71KB

  • MD5

    d3b25507101c1664beb2e07bc784b0bb

  • SHA1

    44762e2e73d6c43cc6f544cd2b78442e7f772c4b

  • SHA256

    e5b966e0e1e54ddf6ea0e78fe0e1bad3c08a7872f789cdde9d5a6a810cbd492b

  • SHA512

    ce21be09b627735dcf49a50605a6776edd33eb58368c9379645b0f7e35fe2c127b5d8ea932c85f25d5e974ff118857aaee83e5c0bec646944b8a7ea2efe122a9

  • SSDEEP

    1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTI:ZhpAyazIlyazTI

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_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1936
    • 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:2036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nGfP9VUgwME80ol.exe

    Filesize

    71KB

    MD5

    6d63c827130a3c148780e6f8e5aa62e0

    SHA1

    267642496a8da22929fb6e41dd844ffa564c222c

    SHA256

    47644ccbec332c54210725219ba0e9166d3c5536da0c3c13ccef7e0ce3126065

    SHA512

    f88f7184b697b6d1dfdc00011ee9ee050e164afd9631b3ace1527925d88e2f7561ee4e84538794974b310188050487579da22c2f0ba50d75d417551786cccc57

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25