Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    03-06-2024 09:46

General

  • Target

    2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe

  • Size

    71KB

  • MD5

    eed7c72ac005ec2aff1842c04688a730

  • SHA1

    0dece82001a391a317028fe3c737c5e34dd2dccb

  • SHA256

    491adfdc3cce051731ea87c3ca9e16ffcdd8d8cc9e10d9649f8b49d5575def92

  • SHA512

    993d53d4a8708cc79a42c27b33516add0bccdeee23662540c984671955248f5d3b053e52249f4a045fa2c3d9a8015726e568976e8b041167bdc9fed10e1fee8e

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTn:ZRpAyazIliazTn

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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2980
    • 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:300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\SvyHz1zgaXS2vBc.exe

    Filesize

    71KB

    MD5

    21e544ff9c1e4bb3185a25f0a71c1a01

    SHA1

    1d44474e33167c196c66a19dae2bbfb1ae37c402

    SHA256

    f17987676d34e3a70a2101bf0d48737472fc73b2a9ee16a0d181cff1d095824a

    SHA512

    bdfa3b0354b862a0db9931f68bed1984da5c2a21462fcbc213a642513130b9410a870cc51d34cf810f22f4b0f997f9e5a41f2852c226025ea27b09cb3eee506c

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432