Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    02/06/2024, 01:04

General

  • Target

    2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe

  • Size

    71KB

  • MD5

    578186df7b810fe5809213537aaea468

  • SHA1

    06cdbd529d612d24d336f984b0fcf5ae79061c18

  • SHA256

    7b911eda3edcb5cfc53b82f5aba8e50f87dc772728836424332c6c02ad3af6e7

  • SHA512

    9c3d10bc36e55137d9ee664d0ed0744ec3130c5d07d792ed913b2603744d605d257d5131fd9343a47292af39974780e0116457f4bee2330bf406fa760cff1461

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTLX:ZRpAyazIliazTLX

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\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1732
    • 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:2192

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\62GaDFdiaTOpnBr.exe

          Filesize

          71KB

          MD5

          87ce87d6839d7329e641695f41ef2b1e

          SHA1

          198bab1842a2ed0f8152126ee9fd1d44d3b73fbc

          SHA256

          95ea9da33250d65c3adeb7b11346ce14354a6481a76f5971cb284c5653c73c81

          SHA512

          2044eeae6add96663d6a1afa4130d8feca901c6a2267c33bcbb929a8db949e897817693ef9ca2cae0a009640bbfc087e68b3a39750cd5c5d8946a6aeb78a9338

        • C:\Windows\CTS.exe

          Filesize

          71KB

          MD5

          f9d4ab0a726adc9b5e4b7d7b724912f1

          SHA1

          3d42ca2098475924f70ee4a831c4f003b4682328

          SHA256

          b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

          SHA512

          22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432