Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    11/06/2024, 17:53

General

  • Target

    2024-06-11_56c46bfa121fca06c1325981e6c13195_bkransomware.exe

  • Size

    72KB

  • MD5

    56c46bfa121fca06c1325981e6c13195

  • SHA1

    edec16c5f91bc13d25e9ae17757992202568e246

  • SHA256

    bfd18f72aab900840cc667f96449dbd01158970223ec1c25df9965ba1ad0b59d

  • SHA512

    5c34bee7eab727ad5bf276219bfcd46b459fbdcc705374c473825de2a281083e228047fae3fec687cd64e558ac05d3a86cc88bdd7528aef10e4f129b8e6001e2

  • SSDEEP

    1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT4dD:ZhpAyazIlyazT4dD

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\2024-06-11_56c46bfa121fca06c1325981e6c13195_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_56c46bfa121fca06c1325981e6c13195_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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:2100

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\1JfwafEvokpQAbN.exe

          Filesize

          72KB

          MD5

          893912ff0c0fdf6b37227ef8fe1be850

          SHA1

          354d5572c3e8061e54454546cc88174398324da1

          SHA256

          cd047dd6083c20858fb99d04c4ef822617b3ce75f5abc34044d0b0c84a6bac61

          SHA512

          0c73c1ed1b8c426482aba3dd4330bb1b402d07ddd8d93d93cb9eade9943c1d07ecd9b790dfb5b02f24523cdc160b70efa4f4a9d31c46305d156adab5e1586c26

        • C:\Windows\CTS.exe

          Filesize

          71KB

          MD5

          66df4ffab62e674af2e75b163563fc0b

          SHA1

          dec8a197312e41eeb3cfef01cb2a443f0205cd6e

          SHA256

          075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

          SHA512

          1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25