Overview

overview

7

Static

static

1

b213c47b73...18.exe

windows7-x64

7

b213c47b73...18.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    92s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 06:13

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General

  • Target
    b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe
  • Size 4.3MB
  • Sample240616-gyzcmsselc
  • SHA256 c8662f64f29909d4da66118031e79fa1d3b415b08ee9d9ff750ef5476da58fbf
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10
bootkitdiscoverypersistencespywarestealer

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious behavior: RenamesItself 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Drops file in Windows directory
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:876
    • C:\ProgramData\Чистилка\Чистилка.exe
      C:\ProgramData\Чистилка\Чистилка.exe /srvcreate
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:684
    • C:\Users\Admin\AppData\Local\Temp\b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe" /test
      2⤵
      • Executes dropped EXE
      PID:2020
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 1404
      2⤵
      • Program crash
      PID:4124
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 876 -ip 876
    1⤵
      PID:3256

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Чистилка.exe
          • Path C:\ProgramData\Чистилка\Чистилка.exe
          • Size 4.3MB
          • SHA256 c8662f64f29909d4da66118031e79fa1d3b415b08ee9d9ff750ef5476da58fbf
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe
          • Path C:\Users\Admin\AppData\Local\Temp\b213c47b7380426bf3033c78762477a9_JaffaCakes118.exe
          • Size 5.9MB
          • SHA256 c5a685088c44b1fbd01f49587af753b6a0f8f793de8d3b3d7e170574fef27ba8
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          memory/876-40-0x0000000000D40000-0x000000000119E000-memory.dmp
          Download