Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-02-2023 17:30

General

  • Target

    7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652.exe

  • Size

    4.2MB

  • MD5

    301bc1aff92308244341e839e223a1a7

  • SHA1

    ea3a6013c0e3cd68a312c092dde9d3965b9d54de

  • SHA256

    7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652

  • SHA512

    27e7989a7c24cbe8c3c5645d936fbffe7c055fafce35d470d0ced8812767c75f838be3a683f3c0f589578e67a894022a972bedeba108e07d748194d13dca3f26

  • SSDEEP

    98304:RC/oay0UtjjvmEYbQqX7o9EAxis5NYNYAOkLXq8AHA6OGY1L5mLVKqb7N:43y0CjTmEYbQqXoZUYlZcYHAn5cV5N

Malware Config

Signatures

  • Glupteba

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

  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Executes dropped EXE 3 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\7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652.exe
    "C:\Users\Admin\AppData\Local\Temp\7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2476
    • C:\Users\Admin\AppData\Local\Temp\7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652.exe
      "C:\Users\Admin\AppData\Local\Temp\7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652.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:4412
      • 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:4836
        • 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:4728
      • 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:4948
        • 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:504
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:516
          • 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:1640
          • 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:32
          • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            4⤵
            • Executes dropped EXE
            PID:2364
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /delete /tn "csrss" /f
              5⤵
                PID:4156
              • C:\Windows\SYSTEM32\schtasks.exe
                schtasks /delete /tn "ScheduledUpdate" /f
                5⤵
                  PID:4160

        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

          4.2MB

          MD5

          301bc1aff92308244341e839e223a1a7

          SHA1

          ea3a6013c0e3cd68a312c092dde9d3965b9d54de

          SHA256

          7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652

          SHA512

          27e7989a7c24cbe8c3c5645d936fbffe7c055fafce35d470d0ced8812767c75f838be3a683f3c0f589578e67a894022a972bedeba108e07d748194d13dca3f26

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

          4.2MB

          MD5

          301bc1aff92308244341e839e223a1a7

          SHA1

          ea3a6013c0e3cd68a312c092dde9d3965b9d54de

          SHA256

          7695b25fe9524eb35f9de4485b480b0985175c01b86f96c1629905b9aa6f8652

          SHA512

          27e7989a7c24cbe8c3c5645d936fbffe7c055fafce35d470d0ced8812767c75f838be3a683f3c0f589578e67a894022a972bedeba108e07d748194d13dca3f26

        • memory/1640-372-0x0000000000000000-mapping.dmp
        • memory/2364-457-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/2364-418-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/2364-406-0x0000000000000000-mapping.dmp
        • memory/2476-158-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-156-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-125-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-126-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-127-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-128-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-129-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-130-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-131-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-132-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-133-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-162-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-135-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-136-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-137-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-138-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-140-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-141-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-142-0x0000000002C00000-0x0000000002FF7000-memory.dmp
          Filesize

          4.0MB

        • memory/2476-144-0x0000000003000000-0x0000000003877000-memory.dmp
          Filesize

          8.5MB

        • memory/2476-143-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-145-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-146-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-148-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/2476-147-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-149-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-150-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-152-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-151-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-154-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-155-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-153-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-157-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-164-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-123-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-159-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-160-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-161-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-134-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-115-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-124-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-165-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-166-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-167-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-168-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-170-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-171-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-169-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-172-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-173-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-174-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-175-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-176-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-177-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-178-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-179-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-180-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-181-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-182-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-239-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/2476-116-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-117-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-118-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-119-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-120-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-121-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-122-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/2476-163-0x00000000777D0000-0x000000007795E000-memory.dmp
          Filesize

          1.6MB

        • memory/4412-300-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4412-294-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4412-262-0x00000000029F0000-0x0000000002DE0000-memory.dmp
          Filesize

          3.9MB

        • memory/4728-293-0x0000000000000000-mapping.dmp
        • memory/4836-292-0x0000000000000000-mapping.dmp
        • memory/4948-348-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/4948-296-0x0000000000000000-mapping.dmp
        • memory/4948-378-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/4948-379-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4948-444-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4948-349-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB