Analysis

  • max time kernel
    224s
  • max time network
    237s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 07:10

General

  • Target

    e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b.exe

  • Size

    4.0MB

  • MD5

    fd0319efbbcddf4ce10be7ffaf5dc5c9

  • SHA1

    942c57840bfa274c1cf0e5c85e18b14e07a7a1a5

  • SHA256

    e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b

  • SHA512

    3bdc34a0e74eb1ec2f12aad79de202f8a065162bf9e91759bed884a750d088acaa0f3a45ed0f4ea98fe6f69bb098b93a57860de60d3120de94eff9090f44fe92

  • SSDEEP

    49152:krcFzL+mdliQAPs47oLkkU9uTV1cEop+RjIB9t1ZiDkLiY2MdRJkCsMcMSeZYgx7:qiL+mzAj92V1FVYLZEidjiMRfKgxj2y

Malware Config

Signatures

  • Glupteba

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

  • 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 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b.exe
    "C:\Users\Admin\AppData\Local\Temp\e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:208
    • C:\Users\Admin\AppData\Local\Temp\e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b.exe
      "C:\Users\Admin\AppData\Local\Temp\e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2880
      • 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:4328
        • 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:3620
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3156
        • 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:1652
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:944
          • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:4640
          • 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:1440
    • 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:4796

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\rss\csrss.exe

      Filesize

      4.0MB

      MD5

      fd0319efbbcddf4ce10be7ffaf5dc5c9

      SHA1

      942c57840bfa274c1cf0e5c85e18b14e07a7a1a5

      SHA256

      e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b

      SHA512

      3bdc34a0e74eb1ec2f12aad79de202f8a065162bf9e91759bed884a750d088acaa0f3a45ed0f4ea98fe6f69bb098b93a57860de60d3120de94eff9090f44fe92

    • C:\Windows\rss\csrss.exe

      Filesize

      4.0MB

      MD5

      fd0319efbbcddf4ce10be7ffaf5dc5c9

      SHA1

      942c57840bfa274c1cf0e5c85e18b14e07a7a1a5

      SHA256

      e7fddfde7bf869671640eb927167bd8835c25a2f5e512aeebe685065b1815d5b

      SHA512

      3bdc34a0e74eb1ec2f12aad79de202f8a065162bf9e91759bed884a750d088acaa0f3a45ed0f4ea98fe6f69bb098b93a57860de60d3120de94eff9090f44fe92

    • memory/208-133-0x0000000004D50000-0x00000000055C7000-memory.dmp

      Filesize

      8.5MB

    • memory/208-134-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/208-135-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/208-137-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/208-132-0x0000000004960000-0x0000000004D49000-memory.dmp

      Filesize

      3.9MB

    • memory/944-151-0x0000000000000000-mapping.dmp

    • memory/1440-155-0x0000000000000000-mapping.dmp

    • memory/1652-150-0x0000000000000000-mapping.dmp

    • memory/2880-145-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/2880-139-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/2880-138-0x0000000004921000-0x0000000004D0A000-memory.dmp

      Filesize

      3.9MB

    • memory/2880-136-0x0000000000000000-mapping.dmp

    • memory/3156-142-0x0000000000000000-mapping.dmp

    • memory/3156-146-0x0000000004D00000-0x00000000050E9000-memory.dmp

      Filesize

      3.9MB

    • memory/3156-147-0x0000000005100000-0x0000000005977000-memory.dmp

      Filesize

      8.5MB

    • memory/3156-148-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/3156-149-0x0000000000400000-0x0000000002BC1000-memory.dmp

      Filesize

      39.8MB

    • memory/3620-141-0x0000000000000000-mapping.dmp

    • memory/4328-140-0x0000000000000000-mapping.dmp

    • memory/4640-152-0x0000000000000000-mapping.dmp