Overview

overview

9

Static

static

1

3ac28a2f0e...18.exe

windows7-x64

9

3ac28a2f0e...18.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 15:15

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General

  • Target
    3ac28a2f0efe10a85d8b39dd5c7b302e_JaffaCakes118.exe
  • Size 11.4MB
  • Sample240512-sm2t6sfa45
  • SHA256 b5f2299bd6cf709f4eabeb04aac1ac057f4a710c6798110f1d3c49de02d1887b
  • 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.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 1 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).

  • Modifies data under HKEY_USERS 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ac28a2f0efe10a85d8b39dd5c7b302e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3ac28a2f0efe10a85d8b39dd5c7b302e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4916
    • C:\Users\Admin\AppData\Local\Temp\3F99.tmp
      "C:\Users\Admin\AppData\Local\Temp\3F99.tmp"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4908
      • C:\Users\Admin\AppData\Local\Temp\40C2.tmp
        "C:\Users\Admin\AppData\Local\Temp\40C2.tmp"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Writes to the Master Boot Record (MBR)
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4080
        • C:\Users\Admin\AppData\Local\Temp\40C2.tmp
          "C:\Users\Admin\AppData\Local\Temp\40C2.tmp" /test
          4⤵
          • Executes dropped EXE
          PID:2656
        • C:\Users\Admin\AppData\Local\Temp\40C2.tmp
          "C:\Users\Admin\AppData\Local\Temp\40C2.tmp" /restart /util
          4⤵
          • 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 use of AdjustPrivilegeToken
          PID:2852
      • C:\Users\Admin\AppData\Local\Temp\40D3.tmp
        "C:\Users\Admin\AppData\Local\Temp\40D3.tmp" "install"
        3⤵
        • Executes dropped EXE
        PID:1880
  • C:\Users\Admin\AppData\Local\Temp\40D3.tmp
    "C:\Users\Admin\AppData\Local\Temp\40D3.tmp" run
    1⤵
    • Executes dropped EXE
    • Modifies data under HKEY_USERS
    PID:4412

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 504c70411397907ba86e8d3726534d2eb901ba39328cfe6399857f47d350730d
        • MD5 SHA1 SHA512
        Submit Download

        settings.json
        • Path C:\ProgramData\Чистилка\settings.json
        • Size 444B
        • SHA256 aa82907c01c8eaafd9a77be44cf71d21135324882aac1c3ea06e8b007c2a5b64
        • MD5 SHA1 SHA512
        Submit Download

        3F99.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\3F99.tmp
        • Size 11.0MB
        • SHA256 ca9f3b8c4261336def3812671cecabd3666b7fe863963e22785d58e3926619e8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        40C2.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\40C2.tmp
        • Size 10.3MB
        • SHA256 1f2f8e3dacc5c35b10617a442eef165e41183c327d9e08ea6b9dba0da7b752c8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        40C2.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\40C2.tmp
        • Size 5.9MB
        • SHA256 c5a685088c44b1fbd01f49587af753b6a0f8f793de8d3b3d7e170574fef27ba8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        40D3.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\40D3.tmp
        • Size 324KB
        • SHA256 f4cc03a26f2d13a41a86da8629b5d5c80a9ea586b6ba044e952b1972ab013440
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        cln45C4.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\cln45C4.tmp
        • Size 49KB
        • SHA256 ac1dfd38d2fa61e28211e196cd3d754f6ccfb220e8c1beba52e54825cf615e22
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        sciter.dll
        • Path C:\Users\Admin\AppData\Local\Temp\sciter.dll
        • Size 5.0MB
        • SHA256 9fabfffee8ef815f6e0f34c8909597ddf360ebff061151f18365202b774ceb20
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        Чистилка.lnk
        • Path C:\Users\Public\Desktop\Чистилка.lnk
        • Size 1KB
        • SHA256 64bd1d7b923b3b70d317b9772394667cfce069b235fcfd7897d24a4e82708d09
        • MD5 SHA1 SHA512
        Submit Download

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

        memory/4080-63-0x0000000000AC0000-0x000000000150F000-memory.dmp
        Download