Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-02-2023 06:11

General

  • Target

    e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8.exe

  • Size

    4.0MB

  • MD5

    718b1f4da900d3cc3a85aaa4c9794ef7

  • SHA1

    9e097e57fca33e139dd3b7822e244089d1c9b400

  • SHA256

    e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8

  • SHA512

    53785706338431059178789d63e9028dc75caa356ad27e93ef4d8e638d4f894488e06d2f5a1fd32afbe8c09b22f634e6822b62f3b0899cf00d4786a3ffcf3358

  • SSDEEP

    98304:A/1b7b9hEAaAQUgwHPbVxqLAMIMZEh4JWJtLd+QfvHJT9:i93LbOMMsYq+EBJ

Malware Config

Signatures

  • Glupteba

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Executes dropped EXE 2 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 17 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8.exe
    "C:\Users\Admin\AppData\Local\Temp\e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2620
    • C:\Users\Admin\AppData\Local\Temp\e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8.exe
      "C:\Users\Admin\AppData\Local\Temp\e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8.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:1312
      • 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:4144
        • 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:3340
      • 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:4464
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4036
          • 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:1056
          • 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:3900
          • 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:1560
    • 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:4920

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    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

      718b1f4da900d3cc3a85aaa4c9794ef7

      SHA1

      9e097e57fca33e139dd3b7822e244089d1c9b400

      SHA256

      e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8

      SHA512

      53785706338431059178789d63e9028dc75caa356ad27e93ef4d8e638d4f894488e06d2f5a1fd32afbe8c09b22f634e6822b62f3b0899cf00d4786a3ffcf3358

    • C:\Windows\rss\csrss.exe

      Filesize

      4.0MB

      MD5

      718b1f4da900d3cc3a85aaa4c9794ef7

      SHA1

      9e097e57fca33e139dd3b7822e244089d1c9b400

      SHA256

      e9eec37a4381fbec9df5885ef3910a03b3716887140b24a5fe40986fbe0f89c8

      SHA512

      53785706338431059178789d63e9028dc75caa356ad27e93ef4d8e638d4f894488e06d2f5a1fd32afbe8c09b22f634e6822b62f3b0899cf00d4786a3ffcf3358

    • memory/1312-137-0x00000000029EB000-0x0000000002DD4000-memory.dmp

      Filesize

      3.9MB

    • memory/1312-144-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/1312-138-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/2620-133-0x0000000002E90000-0x0000000003707000-memory.dmp

      Filesize

      8.5MB

    • memory/2620-132-0x0000000002AA0000-0x0000000002E89000-memory.dmp

      Filesize

      3.9MB

    • memory/2620-136-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/2620-134-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4464-146-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4464-145-0x0000000002E00000-0x00000000031E9000-memory.dmp

      Filesize

      3.9MB

    • memory/4464-153-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB