Overview

overview

9

Static

static

1

9e3856d35e...18.exe

windows7-x64

7

9e3856d35e...18.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    92s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 12:43

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General

  • Target
    9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
  • Size 4.3MB
  • Sample240611-pyex1axcje
  • SHA256 cf85df4419807f0d65e4ea91ee1c0ada18c945750533a480b1bc57c0669ddcf1
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
bootkitdiscoveryevasionpersistencespywarestealer

Malware Config

Signatures

  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
    evasion
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
    evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
    evasion
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 3 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
  • Checks system information in the registry 2 TTPs 1 IoCs

    System information is often read in order to detect sandboxing environments.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

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

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_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:552
    • C:\ProgramData\Чистилка\Чистилка.exe
      C:\ProgramData\Чистилка\Чистилка.exe /srvcreate
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1736
    • C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe" /test
      2⤵
      • Executes dropped EXE
      PID:2116
    • C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe" /restart /util
      2⤵
      • Enumerates VirtualBox registry keys
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Looks for VirtualBox Guest Additions in registry
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks system information in the registry
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:724

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        config.dat
        • Path C:\ProgramData\Чистилка\config.dat
        • Size 476KB
        • SHA256 2ca7660f386dd7a3d492c39c82c33e09dec745f1b7e43c018d155cd07393a044
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        settings.json
        • Path C:\ProgramData\Чистилка\settings.json
        • Size 637B
        • SHA256 85d93ba151558225e1bf5a01ddb1b53b5577b4501e4664066c85b9aada895ff1
        • MD5 SHA1 SHA512
        Submit Download

        Чистилка.exe
        • Path C:\ProgramData\Чистилка\Чистилка.exe
        • Size 4.3MB
        • SHA256 cf85df4419807f0d65e4ea91ee1c0ada18c945750533a480b1bc57c0669ddcf1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
        • Path C:\Users\Admin\AppData\Local\Temp\9e3856d35e9b55d33c1c919787907044_JaffaCakes118.exe
        • Size 5.9MB
        • SHA256 c5a685088c44b1fbd01f49587af753b6a0f8f793de8d3b3d7e170574fef27ba8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        cln499D.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\cln499D.tmp
        • Size 49KB
        • SHA256 ac1dfd38d2fa61e28211e196cd3d754f6ccfb220e8c1beba52e54825cf615e22
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        PNS.TTF
        • Path C:\WINDOWS\FONTS\PNS.TTF
        • Size 127KB
        • SHA256 723091ba5a1b8e65164075516d69c00c71225c6dde61ffc32dd4047803ab42b5
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/552-44-0x0000000000690000-0x0000000000AEE000-memory.dmp
        Download