Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 18:12

General

  • Target

    fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423.exe

  • Size

    336KB

  • MD5

    13538c9ed03be954fdbdff48b290173c

  • SHA1

    eb9716b0312e0fc4b117c80ab3e692f2ad2c1904

  • SHA256

    fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423

  • SHA512

    fb3f51697cc88b31c35e6b0a4c4e030f89f89601114e3008c1d0b8875d7a5fe9cb5cc7b65a4f101cfdc13054b942b2cbe19a49d4a45523e044707a44d92cb27a

  • SSDEEP

    6144:bRjCJsxZZQttyCVxaWYSda4bHPS9x6qr6jDRPWHz6kp62kVPIqbszMFk7:1j4eAtpVxag1bvgx6NdC62kV8Ma

Malware Config

Extracted

Family

cybergate

Version

v1.03.0

Botnet

Spartacus121

C2

spartacus121.no-ip.biz:82

Mutex

SFM6Q0W81SFUP6

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    csrss.exe

  • install_dir

    Microsoft

  • install_file

    Windows Update.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Answer yes or no.

  • message_box_title

    Derp

  • password

    121004

  • 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.

  • Adds Run key to start application 2 TTPs 4 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 WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1996
      • C:\Users\Admin\AppData\Local\Temp\fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423.exe
        "C:\Users\Admin\AppData\Local\Temp\fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423.exe"
        2⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:4364
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          PID:4956
        • C:\Users\Admin\AppData\Local\Temp\fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423.exe
          "C:\Users\Admin\AppData\Local\Temp\fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423.exe"
          3⤵
          • Checks computer location settings
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:3828
          • C:\Microsoft\Windows Update.exe
            "C:\Microsoft\Windows Update.exe"
            4⤵
            • Executes dropped EXE
            PID:3216
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 560
              5⤵
              • Program crash
              PID:1884
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3216 -ip 3216
      1⤵
        PID:4184

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Microsoft\Windows Update.exe

        Filesize

        336KB

        MD5

        13538c9ed03be954fdbdff48b290173c

        SHA1

        eb9716b0312e0fc4b117c80ab3e692f2ad2c1904

        SHA256

        fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423

        SHA512

        fb3f51697cc88b31c35e6b0a4c4e030f89f89601114e3008c1d0b8875d7a5fe9cb5cc7b65a4f101cfdc13054b942b2cbe19a49d4a45523e044707a44d92cb27a

      • C:\Microsoft\Windows Update.exe

        Filesize

        336KB

        MD5

        13538c9ed03be954fdbdff48b290173c

        SHA1

        eb9716b0312e0fc4b117c80ab3e692f2ad2c1904

        SHA256

        fcfae16e1e5e82c93fb614c933d62edd0795b1e59e788e49286d37f60526b423

        SHA512

        fb3f51697cc88b31c35e6b0a4c4e030f89f89601114e3008c1d0b8875d7a5fe9cb5cc7b65a4f101cfdc13054b942b2cbe19a49d4a45523e044707a44d92cb27a

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

        Filesize

        221KB

        MD5

        55dafc6fe73863f7858ac184a744e7d4

        SHA1

        3f08c69df8b56326ee773c056e1a41484a5f0ffb

        SHA256

        c1094b1f2c47c2ffbff89c4d816e5f1d3e6447edebd1a14ade95d7d02eaf9264

        SHA512

        10d5a335f2b58c9553fa5a3419d025dcb92602df300fe702a710316a638b671999715847d5eba64868a0eb651c70354f98122d47d9549794c41a08cb67effc91

      • memory/3216-161-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/3828-155-0x00000000240F0000-0x0000000024151000-memory.dmp

        Filesize

        388KB

      • memory/3828-163-0x00000000240F0000-0x0000000024151000-memory.dmp

        Filesize

        388KB

      • memory/3828-158-0x00000000240F0000-0x0000000024151000-memory.dmp

        Filesize

        388KB

      • memory/3828-157-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4364-152-0x00000000240F0000-0x0000000024151000-memory.dmp

        Filesize

        388KB

      • memory/4364-132-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4364-156-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4364-147-0x0000000000A20000-0x0000000000A81000-memory.dmp

        Filesize

        388KB

      • memory/4364-139-0x0000000024080000-0x00000000240E1000-memory.dmp

        Filesize

        388KB

      • memory/4364-134-0x0000000024010000-0x0000000024071000-memory.dmp

        Filesize

        388KB

      • memory/4956-143-0x0000000024080000-0x00000000240E1000-memory.dmp

        Filesize

        388KB

      • memory/4956-142-0x0000000024080000-0x00000000240E1000-memory.dmp

        Filesize

        388KB

      • memory/4956-162-0x0000000024080000-0x00000000240E1000-memory.dmp

        Filesize

        388KB