Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    23-09-2022 22:07

General

  • Target

    430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520.exe

  • Size

    4.0MB

  • MD5

    cd6366c25a996a5db15336ae630b6e39

  • SHA1

    b9693568c3eb4955bb0f451fb9cf9cb569228f38

  • SHA256

    430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520

  • SHA512

    f1b98adca4b3689d2c52982a181d0779d42143125ae0b13841e90ae3ccc0c8b9cb816f999322c8624bc1c8936a4f1dba98f4c6ecdafecc17b17f563bbb01b3a2

  • SSDEEP

    98304:c8mevNJ40TCWm5dZ4E62XvM0iAHkrCJ6nq6jdx:H40TCBmE62XE0lHk+Sl7

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 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520.exe
    "C:\Users\Admin\AppData\Local\Temp\430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520.exe
      "C:\Users\Admin\AppData\Local\Temp\430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520.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:4396
      • 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:1668
        • 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:3132
      • 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:3076
        • 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:3684
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:904
          • 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:740
          • 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:308

    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\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

      cd6366c25a996a5db15336ae630b6e39

      SHA1

      b9693568c3eb4955bb0f451fb9cf9cb569228f38

      SHA256

      430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520

      SHA512

      f1b98adca4b3689d2c52982a181d0779d42143125ae0b13841e90ae3ccc0c8b9cb816f999322c8624bc1c8936a4f1dba98f4c6ecdafecc17b17f563bbb01b3a2

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

      4.0MB

      MD5

      cd6366c25a996a5db15336ae630b6e39

      SHA1

      b9693568c3eb4955bb0f451fb9cf9cb569228f38

      SHA256

      430b6862fd9f65db2cf2891fbe8e1d31f86939f4598efed1f89c7f1991fa3520

      SHA512

      f1b98adca4b3689d2c52982a181d0779d42143125ae0b13841e90ae3ccc0c8b9cb816f999322c8624bc1c8936a4f1dba98f4c6ecdafecc17b17f563bbb01b3a2

    • memory/740-370-0x0000000000000000-mapping.dmp
    • memory/1668-295-0x0000000000000000-mapping.dmp
    • memory/2344-156-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-180-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-123-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-124-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-125-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-126-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-127-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-128-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-129-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-131-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-132-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-130-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-134-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-135-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-136-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-137-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-138-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-139-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-140-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-141-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-142-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-143-0x0000000002AE0000-0x0000000002ED4000-memory.dmp
      Filesize

      4.0MB

    • memory/2344-144-0x0000000002EE0000-0x0000000003756000-memory.dmp
      Filesize

      8.5MB

    • memory/2344-145-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-146-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-162-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-148-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-149-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-150-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-151-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-152-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-153-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-154-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-155-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-121-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-157-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-159-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-160-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-158-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-118-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-147-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/2344-163-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-164-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-165-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-166-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-167-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-168-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-169-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-170-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-171-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-173-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-172-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-174-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-176-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-175-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-177-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-179-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-178-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-122-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-181-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-182-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-183-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-184-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-185-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-243-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/2344-161-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-119-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/2344-120-0x00000000770E0000-0x000000007726E000-memory.dmp
      Filesize

      1.6MB

    • memory/3076-362-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/3076-361-0x0000000003000000-0x00000000033EA000-memory.dmp
      Filesize

      3.9MB

    • memory/3076-299-0x0000000000000000-mapping.dmp
    • memory/3076-381-0x0000000003000000-0x00000000033EA000-memory.dmp
      Filesize

      3.9MB

    • memory/3076-382-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/3132-296-0x0000000000000000-mapping.dmp
    • memory/4396-256-0x00000000029B0000-0x0000000002D9A000-memory.dmp
      Filesize

      3.9MB

    • memory/4396-297-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/4396-303-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB