Analysis

  • max time kernel
    207s
  • max time network
    212s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 17:22

General

  • Target

    844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe

  • Size

    542KB

  • MD5

    f9ea3007ed50e8fb07cc3c37308ffafb

  • SHA1

    54deccd624e9803eb451fd359e8bab880425f84b

  • SHA256

    844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024

  • SHA512

    b0cc157836752437e92a593595f48225f7156bd8f6de9d68401d5e03cea7b4f9ca88cda2819d934d13da5d5b9ed332ac5829181b0c85a28463b7c3c572f23acc

  • SSDEEP

    12288:bZvOVpDcQqibk0sbRu8BQG+7pis7fYFH7E5N:bBOVlqigxbTQHp7jGO

Malware Config

Extracted

Family

cybergate

Version

2.6

Botnet

Victima

C2

85.137.57.212:58

Mutex

***MUTEX***

Attributes
  • enable_keylogger

    true

  • enable_message_box

    true

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    winlogon.exe

  • install_dir

    system32

  • install_file

    winlogons.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Se instalarĂ¡ en el sistema el archivo wlogon.dll para su funcionamiento

  • message_box_title

    Aviso de Windows

  • password

    159951

  • regkey_hkcu

    HKCU

  • regkey_hklm

    HKLM

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 16 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2644
      • C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe
        "C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe"
        2⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:444
        • C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe
          "C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe"
          3⤵
          • Adds policy Run key to start application
          • Modifies Installed Components in the registry
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:3672
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            PID:4844
            • C:\Windows\SysWOW64\system32\winlogons.exe
              "C:\Windows\system32\system32\winlogons.exe"
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              PID:1316
          • C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe
            "C:\Users\Admin\AppData\Local\Temp\844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024.exe"
            4⤵
            • Checks computer location settings
            • Drops file in System32 directory
            • Modifies registry class
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 444 -ip 444
      1⤵
        PID:3960
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1316 -s 228
        1⤵
        • Program crash
        PID:2520
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1316 -ip 1316
        1⤵
          PID:4568

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Registry Run Keys / Startup Folder

        3
        T1060

        Defense Evasion

        Modify Registry

        3
        T1112

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\KERNEL32.DLL
          Filesize

          32KB

          MD5

          0676a9f7a509468fbdec515278390f4f

          SHA1

          5f6ae96f8c3ebab6cce16902272dda2c5b72a340

          SHA256

          12b28f4bcd9545bd838246085fcc97a88683eed88b2d45722a609a5db5cb5018

          SHA512

          8ce6ce09d903e8d27be4660749f3b76eaab41d079854a4aa4c5bed876207c18001d3cf4c7ade657c97400c9ecb85461c9b2398ddecabba9895b3b1c6e5e6c329

        • C:\KERNEL32.DLL
          Filesize

          32KB

          MD5

          0676a9f7a509468fbdec515278390f4f

          SHA1

          5f6ae96f8c3ebab6cce16902272dda2c5b72a340

          SHA256

          12b28f4bcd9545bd838246085fcc97a88683eed88b2d45722a609a5db5cb5018

          SHA512

          8ce6ce09d903e8d27be4660749f3b76eaab41d079854a4aa4c5bed876207c18001d3cf4c7ade657c97400c9ecb85461c9b2398ddecabba9895b3b1c6e5e6c329

        • C:\KERNEL32.DLL
          Filesize

          32KB

          MD5

          0676a9f7a509468fbdec515278390f4f

          SHA1

          5f6ae96f8c3ebab6cce16902272dda2c5b72a340

          SHA256

          12b28f4bcd9545bd838246085fcc97a88683eed88b2d45722a609a5db5cb5018

          SHA512

          8ce6ce09d903e8d27be4660749f3b76eaab41d079854a4aa4c5bed876207c18001d3cf4c7ade657c97400c9ecb85461c9b2398ddecabba9895b3b1c6e5e6c329

        • C:\Users\Admin\AppData\Local\Temp\XX--XX--XX.txt
          Filesize

          229KB

          MD5

          7e4e22da68b11e8f4491b8d699d403f0

          SHA1

          e027475bba570230adab0078e9286d27dccd4a4c

          SHA256

          764e7f042cf7db7c9a4ba81c97ba3a8e4871cffdbac4ca3ac1f24cb822022a27

          SHA512

          9865566d25d9585f4077d36690945dc8270450f9d25c0f4ebcd0861c8ae2de1e7e2096b5246fbf39d3d459398db12fb10f58ff38bd5a8400b5cf084f73033f16

        • C:\Windows\SysWOW64\system32\winlogons.exe
          Filesize

          542KB

          MD5

          f9ea3007ed50e8fb07cc3c37308ffafb

          SHA1

          54deccd624e9803eb451fd359e8bab880425f84b

          SHA256

          844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024

          SHA512

          b0cc157836752437e92a593595f48225f7156bd8f6de9d68401d5e03cea7b4f9ca88cda2819d934d13da5d5b9ed332ac5829181b0c85a28463b7c3c572f23acc

        • C:\Windows\SysWOW64\system32\winlogons.exe
          Filesize

          542KB

          MD5

          f9ea3007ed50e8fb07cc3c37308ffafb

          SHA1

          54deccd624e9803eb451fd359e8bab880425f84b

          SHA256

          844a13062f29c313cdab23cf9b2d42a1dca4b9410b95dba95efae934a6e3c024

          SHA512

          b0cc157836752437e92a593595f48225f7156bd8f6de9d68401d5e03cea7b4f9ca88cda2819d934d13da5d5b9ed332ac5829181b0c85a28463b7c3c572f23acc

        • memory/444-139-0x0000000000400000-0x000000000044B000-memory.dmp
          Filesize

          300KB

        • memory/444-132-0x0000000000400000-0x000000000044B000-memory.dmp
          Filesize

          300KB

        • memory/1316-169-0x0000000000000000-mapping.dmp
        • memory/1316-174-0x0000000000400000-0x000000000044B000-memory.dmp
          Filesize

          300KB

        • memory/3672-136-0x0000000000000000-mapping.dmp
        • memory/3672-149-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/3672-163-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3672-144-0x0000000024010000-0x0000000024072000-memory.dmp
          Filesize

          392KB

        • memory/3672-142-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3672-157-0x0000000000A20000-0x0000000000A82000-memory.dmp
          Filesize

          392KB

        • memory/3672-170-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3672-165-0x00000000240F0000-0x0000000024152000-memory.dmp
          Filesize

          392KB

        • memory/3672-137-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3672-140-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3672-141-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/4396-162-0x0000000000400000-0x000000000044B000-memory.dmp
          Filesize

          300KB

        • memory/4396-176-0x00000000240F0000-0x0000000024152000-memory.dmp
          Filesize

          392KB

        • memory/4396-168-0x00000000240F0000-0x0000000024152000-memory.dmp
          Filesize

          392KB

        • memory/4396-161-0x0000000000000000-mapping.dmp
        • memory/4396-175-0x00000000240F0000-0x0000000024152000-memory.dmp
          Filesize

          392KB

        • memory/4844-152-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/4844-148-0x0000000000000000-mapping.dmp
        • memory/4844-164-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/4844-153-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB