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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    26/05/2024, 21:22

General

  • Target

    2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe

  • Size

    71KB

  • MD5

    0df64690ba45b57d3a39f0a4c9132477

  • SHA1

    a67efc968af5e4c98d978e6e4881bc10e4f7a62e

  • SHA256

    1087577c201b1a5c54105a7ec45fe526c72ff63958c63a1795e5346a7eff2e33

  • SHA512

    4c7e73bb15dc099c0801666a1154a7a0f621fb330328b898d15893e6a6f7d3807ffdca1dc79770002b2b5ad5c461d9d8e4e35b995e0f3b09c23667a32d5ac330

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTy:ZRpAyazIliazTy

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\2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3012
    • 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:2292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\qqbvlCTqeleD1lN.exe

    Filesize

    71KB

    MD5

    775961b0bba3f439a986338af6d8ece3

    SHA1

    e340c7822771bfbfee53419e2e4b084514e3f468

    SHA256

    a736c01d090f9451ceb6db4c592d38abf72100fb1dbb1e7a381bc3419df0c8f5

    SHA512

    457dcf50ab0c3d738b88d0ea1fc62c8e766dc45f7bb6f78df10c9bfcadb1b2d56222ed378a28de7eac28d490236b2e35c6e1bd7f8844916a99754d3744fda4cc

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432