Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28-01-2023 21:24

General

  • Target

    576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d.exe

  • Size

    4.1MB

  • MD5

    92a435db8e84533cab89757d7d03dfbf

  • SHA1

    800b8c936eb8e684180f6b7463d74eb707b92922

  • SHA256

    576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d

  • SHA512

    0de4d28099da95dee0015298ec2d8a933e7f5e953d2c836d513ab91fe61063f4d6572b16662b73ce339521000b7ed0b14dd713ca3b3c13c26ca0c8729fec459d

  • SSDEEP

    98304:LnA6Nzgkpu1YiCPL2q+9zfEuZBbp7RQjRY3d1bt1dYG4Xy1wK:LNNzC1YiCJ+xZxQjCY8

Malware Config

Signatures

  • Glupteba

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

  • Windows security bypass 2 TTPs 7 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • UPX packed file 4 IoCs

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

  • Windows security modification 2 TTPs 7 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 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d.exe
    "C:\Users\Admin\AppData\Local\Temp\576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2780
    • C:\Users\Admin\AppData\Local\Temp\576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d.exe
      "C:\Users\Admin\AppData\Local\Temp\576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d.exe"
      2⤵
      • Windows security bypass
      • Windows security modification
      • Adds Run key to start application
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4848
      • 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:4212
        • 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
          • Modifies data under HKEY_USERS
          PID:4552
      • 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:5060
        • 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:224
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:192
          • 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:4980
          • 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:4044
          • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            4⤵
            • Executes dropped EXE
            PID:400
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /delete /tn "csrss" /f
              5⤵
                PID:4068
              • C:\Windows\SYSTEM32\schtasks.exe
                schtasks /delete /tn "ScheduledUpdate" /f
                5⤵
                  PID:4504

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Execution

        Scheduled Task

        1
        T1053

        Persistence

        Modify Existing Service

        1
        T1031

        Registry Run Keys / Startup Folder

        1
        T1060

        Scheduled Task

        1
        T1053

        Privilege Escalation

        Scheduled Task

        1
        T1053

        Defense Evasion

        Disabling Security Tools

        2
        T1089

        Modify Registry

        3
        T1112

        Discovery

        Query Registry

        1
        T1012

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
          Filesize

          3.2MB

          MD5

          f801950a962ddba14caaa44bf084b55c

          SHA1

          7cadc9076121297428442785536ba0df2d4ae996

          SHA256

          c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

          SHA512

          4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

        • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
          Filesize

          3.2MB

          MD5

          f801950a962ddba14caaa44bf084b55c

          SHA1

          7cadc9076121297428442785536ba0df2d4ae996

          SHA256

          c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

          SHA512

          4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

        • 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

          4.1MB

          MD5

          92a435db8e84533cab89757d7d03dfbf

          SHA1

          800b8c936eb8e684180f6b7463d74eb707b92922

          SHA256

          576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d

          SHA512

          0de4d28099da95dee0015298ec2d8a933e7f5e953d2c836d513ab91fe61063f4d6572b16662b73ce339521000b7ed0b14dd713ca3b3c13c26ca0c8729fec459d

        • C:\Windows\rss\csrss.exe
          Filesize

          4.1MB

          MD5

          92a435db8e84533cab89757d7d03dfbf

          SHA1

          800b8c936eb8e684180f6b7463d74eb707b92922

          SHA256

          576418be9239d3759e50af00dd24c637fab88ff2fae794818db3b8e76232945d

          SHA512

          0de4d28099da95dee0015298ec2d8a933e7f5e953d2c836d513ab91fe61063f4d6572b16662b73ce339521000b7ed0b14dd713ca3b3c13c26ca0c8729fec459d

        • memory/400-462-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/400-434-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/400-411-0x0000000000000000-mapping.dmp
        • memory/2780-162-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-165-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-128-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-129-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-130-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-131-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-132-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-133-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-134-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-136-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-137-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-138-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-139-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-140-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-142-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-141-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-143-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-144-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-145-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-146-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-147-0x0000000002AC0000-0x0000000002EB1000-memory.dmp
          Filesize

          3.9MB

        • memory/2780-148-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-149-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-150-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-151-0x0000000002EC0000-0x0000000003737000-memory.dmp
          Filesize

          8.5MB

        • memory/2780-152-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-153-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/2780-154-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-155-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-156-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-157-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-158-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-159-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-160-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-161-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-126-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-163-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-164-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-171-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-120-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-127-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-168-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-169-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-170-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-167-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-172-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-173-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-175-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-174-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-176-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-177-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-178-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-179-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-180-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-181-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-182-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-183-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-184-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-185-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-186-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-187-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-249-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/2780-121-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-122-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-123-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-124-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-125-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/2780-166-0x0000000077710000-0x000000007789E000-memory.dmp
          Filesize

          1.6MB

        • memory/4212-296-0x0000000000000000-mapping.dmp
        • memory/4552-299-0x0000000000000000-mapping.dmp
        • memory/4848-306-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4848-298-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4848-297-0x0000000002A70000-0x0000000002E5E000-memory.dmp
          Filesize

          3.9MB

        • memory/4980-377-0x0000000000000000-mapping.dmp
        • memory/5060-362-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/5060-364-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/5060-383-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/5060-384-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/5060-451-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/5060-301-0x0000000000000000-mapping.dmp