Overview

overview

9

Static

static

1

b134923917...18.exe

windows7-x64

9

b134923917...18.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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, 01:55

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General

  • Target
    b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
  • Size 4.3MB
  • Sample240616-cb4xdsvcmc
  • SHA256 08b248953d21646de36c07e4765eb48cd5a3dbe2eed932a01329cc1f52b31350
  • 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
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • 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).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 2 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\b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_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:216
    • C:\ProgramData\Чистилка\Чистилка.exe
      C:\ProgramData\Чистилка\Чистилка.exe /srvcreate
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2716
    • C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe" /test
      2⤵
      • Executes dropped EXE
      PID:4944
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 216 -s 2400
      2⤵
      • Program crash
      PID:3136
    • C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_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
      • Deletes itself
      • Executes dropped EXE
      • Checks system information in the registry
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2120
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 216 -ip 216
    1⤵
      PID:3024

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          Чистилка Uninstall.lnk
          • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Чистилка\Чистилка Uninstall.lnk
          • Size 1KB
          • SHA256 bf4a71b8fac3ea3f10fca600748d334f8c4f6f7e6b65db537462f90bb9e72fd4
          • MD5 SHA1 SHA512
          Submit Download

          Чистилка.lnk
          • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Чистилка\Чистилка.lnk
          • Size 1KB
          • SHA256 798bfedf08ef61ef1c4b7bcb21655120654467fe4fc3248eee267e4c079c15d8
          • MD5 SHA1 SHA512
          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 08b248953d21646de36c07e4765eb48cd5a3dbe2eed932a01329cc1f52b31350
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
          • Path C:\Users\Admin\AppData\Local\Temp\b1349239173aa09484d64007ec4f94e2_JaffaCakes118.exe
          • Size 5.9MB
          • SHA256 c5a685088c44b1fbd01f49587af753b6a0f8f793de8d3b3d7e170574fef27ba8
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          cln5777.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\cln5777.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/216-48-0x0000000000F30000-0x000000000138E000-memory.dmp
          Download