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
    30/05/2024, 23:24

General

  • Target

    2024-05-30_490a955172e90c8fb03c0272a91c1028_bkransomware.exe

  • Size

    71KB

  • MD5

    490a955172e90c8fb03c0272a91c1028

  • SHA1

    7d2861751bd7c46663043f3d815d3b28af850d89

  • SHA256

    968e3fac7b477dfa7b0064ddd254e63155a20eced174f1d63d5b8a404c89ca33

  • SHA512

    428d86c847dcaf287c7450f4e16f88e7184c8ab0d1f4df53c3ea119828fefa2ecc322f82570c3ea5283e657c3b8f951825fa7fe1867e67e9706479142f4d819c

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTb:ZRpAyazIliazTb

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\2024-05-30_490a955172e90c8fb03c0272a91c1028_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_490a955172e90c8fb03c0272a91c1028_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2240
    • 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:1204

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Pm6jQr85KePH109.exe

          Filesize

          71KB

          MD5

          69c48e4b74f195e6e3ba4790170bca15

          SHA1

          14644d99cfa35bae5d0e71ef2b88bf70ef89be3c

          SHA256

          09d72e46fd62ed6c900476447263093433ddd285b03f0d41b9e38384f1201fd8

          SHA512

          dc9661277f2bedfa7d708016cd3bf127856ff6480cf58551b7a5a97dd4f9bcdf52482eb0d182ab7c4be38ce2feda4873d394363c575a32d4b1e28b7851683259

        • C:\Windows\CTS.exe

          Filesize

          71KB

          MD5

          f9d4ab0a726adc9b5e4b7d7b724912f1

          SHA1

          3d42ca2098475924f70ee4a831c4f003b4682328

          SHA256

          b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

          SHA512

          22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432