Analysis

  • max time kernel
    150s
  • max time network
    129s
  • 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 08:18

General

  • Target

    5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650.exe

  • Size

    4.1MB

  • MD5

    7fafbd8b55f1f9520ab1cb303f7d21e6

  • SHA1

    bfa749f6408c9baa4531bcbba05a38f5809bedbd

  • SHA256

    5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650

  • SHA512

    23d4a91b1775efb6d883a3507a3d5f68097270f9add4e5aa3ec06d4f72c4bb551d009238a2d9a3a35e0b8e1e64f8ce1415e7ffd32eb1be8071e53d01e1a50d19

  • SSDEEP

    98304:R+Ap1R2Q5TqXzWWdOqeMAE/l3CDzSpE0lgeinU5Cm33Nw+Q8qb7G:R+Ap1R2Q5TqXyWdneMA8C/SpoeinU5xX

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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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\5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650.exe
    "C:\Users\Admin\AppData\Local\Temp\5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2972
    • C:\Users\Admin\AppData\Local\Temp\5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650.exe
      "C:\Users\Admin\AppData\Local\Temp\5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650.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:4684
      • 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:3204
        • 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:2924
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3372
        • 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:1276
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1560
          • 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:580
          • 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:2176

    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

    Command and Control

    Web Service

    1
    T1102

    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

      4.1MB

      MD5

      7fafbd8b55f1f9520ab1cb303f7d21e6

      SHA1

      bfa749f6408c9baa4531bcbba05a38f5809bedbd

      SHA256

      5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650

      SHA512

      23d4a91b1775efb6d883a3507a3d5f68097270f9add4e5aa3ec06d4f72c4bb551d009238a2d9a3a35e0b8e1e64f8ce1415e7ffd32eb1be8071e53d01e1a50d19

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

      4.1MB

      MD5

      7fafbd8b55f1f9520ab1cb303f7d21e6

      SHA1

      bfa749f6408c9baa4531bcbba05a38f5809bedbd

      SHA256

      5afe3bf437284f5f29bd32aa980614de0dd2c92702acc1044d66e5761ddf9650

      SHA512

      23d4a91b1775efb6d883a3507a3d5f68097270f9add4e5aa3ec06d4f72c4bb551d009238a2d9a3a35e0b8e1e64f8ce1415e7ffd32eb1be8071e53d01e1a50d19

    • memory/580-378-0x0000000000000000-mapping.dmp
    • memory/2924-299-0x0000000000000000-mapping.dmp
    • memory/2972-156-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-180-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-124-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-123-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-125-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-127-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-126-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-128-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-129-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-130-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-131-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-132-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-133-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-134-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-135-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-136-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-137-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-138-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-140-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-141-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-142-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-143-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-144-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-145-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-146-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-162-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-148-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-150-0x0000000002B00000-0x0000000002EF0000-memory.dmp
      Filesize

      3.9MB

    • memory/2972-149-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-151-0x0000000002EF0000-0x0000000003767000-memory.dmp
      Filesize

      8.5MB

    • memory/2972-152-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/2972-153-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-154-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-155-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-121-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-157-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-158-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-159-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-160-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-118-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-147-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-163-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-165-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-164-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-166-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-167-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-168-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-169-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-170-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-171-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-172-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-173-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-174-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-175-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-176-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-177-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-178-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-179-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-122-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-181-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-182-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-183-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-184-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-185-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-244-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/2972-161-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-119-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/2972-120-0x0000000077220000-0x00000000773AE000-memory.dmp
      Filesize

      1.6MB

    • memory/3204-298-0x0000000000000000-mapping.dmp
    • memory/3372-354-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/3372-349-0x0000000002F00000-0x00000000032EA000-memory.dmp
      Filesize

      3.9MB

    • memory/3372-301-0x0000000000000000-mapping.dmp
    • memory/3372-384-0x0000000002F00000-0x00000000032EA000-memory.dmp
      Filesize

      3.9MB

    • memory/3372-385-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/4684-277-0x0000000002950000-0x0000000002D46000-memory.dmp
      Filesize

      4.0MB

    • memory/4684-283-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB

    • memory/4684-305-0x0000000000400000-0x0000000000C91000-memory.dmp
      Filesize

      8.6MB