Analysis

  • max time kernel
    204s
  • max time network
    210s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 17:07

General

  • Target

    d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e.exe

  • Size

    347KB

  • MD5

    2553cba8d44325c5d2044abb65bb0316

  • SHA1

    dcef01c8bf9cd94dca05e942b6082c7a9262b676

  • SHA256

    d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e

  • SHA512

    f6cd530aad8145b538a8af8223e2fde32762c9aadc839726d07ae9479439b31043afa10f4ab82cc6881274c6f3553810af88c7b664b2d441b7a9d748935b5c30

  • SSDEEP

    6144:4OpslshdBCkWYxuukP1pjSKSNVkq/MVJbLI:4wslsTBd47GLRMTb

Malware Config

Extracted

Family

cybergate

Version

v1.07.5

Botnet

remote

C2

rinecamo.no-ip.biz:1005

Mutex

K0N4272B4G4270

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./pkg/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    install

  • install_file

    server.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    password

  • 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 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • UPX packed file 14 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
  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3056
      • C:\Users\Admin\AppData\Local\Temp\d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e.exe
        "C:\Users\Admin\AppData\Local\Temp\d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e.exe"
        2⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Checks computer location settings
        • Adds Run key to start application
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:5100
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:4908
          • C:\Windows\SysWOW64\install\server.exe
            "C:\Windows\system32\install\server.exe"
            4⤵
            • Executes dropped EXE
            PID:4776
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 548
              5⤵
              • Program crash
              PID:3200
        • C:\Windows\SysWOW64\install\server.exe
          "C:\Windows\system32\install\server.exe"
          3⤵
          • Executes dropped EXE
          PID:1304
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1304 -s 592
            4⤵
            • Program crash
            PID:1620
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1304 -ip 1304
      1⤵
        PID:936
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4776 -ip 4776
        1⤵
          PID:2884

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Admin2.txt

          Filesize

          224KB

          MD5

          e0ee5dc0b773863ac623931817786fb1

          SHA1

          b0aaa4c821250374df425cc6a000109cf7ca6bbb

          SHA256

          80f2e82556ecd38d068f9521fa8cb799cc5e596754df0a03bc240b6a6ae71bdd

          SHA512

          0e48625e2e7e66f7bd1f2ef9130d37b25cb4afe2aedf92eca5ad6b2dbfb03b69991fe2e62978d9988ac6b09b598c799efc8c09c942c751b4f660bf94abd500c5

        • C:\Windows\SysWOW64\install\server.exe

          Filesize

          347KB

          MD5

          2553cba8d44325c5d2044abb65bb0316

          SHA1

          dcef01c8bf9cd94dca05e942b6082c7a9262b676

          SHA256

          d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e

          SHA512

          f6cd530aad8145b538a8af8223e2fde32762c9aadc839726d07ae9479439b31043afa10f4ab82cc6881274c6f3553810af88c7b664b2d441b7a9d748935b5c30

        • C:\Windows\SysWOW64\install\server.exe

          Filesize

          347KB

          MD5

          2553cba8d44325c5d2044abb65bb0316

          SHA1

          dcef01c8bf9cd94dca05e942b6082c7a9262b676

          SHA256

          d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e

          SHA512

          f6cd530aad8145b538a8af8223e2fde32762c9aadc839726d07ae9479439b31043afa10f4ab82cc6881274c6f3553810af88c7b664b2d441b7a9d748935b5c30

        • C:\Windows\SysWOW64\install\server.exe

          Filesize

          347KB

          MD5

          2553cba8d44325c5d2044abb65bb0316

          SHA1

          dcef01c8bf9cd94dca05e942b6082c7a9262b676

          SHA256

          d424ada12953f5e1e59eff8618301b9d87ca1de49a9fd5c1f125699565565e4e

          SHA512

          f6cd530aad8145b538a8af8223e2fde32762c9aadc839726d07ae9479439b31043afa10f4ab82cc6881274c6f3553810af88c7b664b2d441b7a9d748935b5c30

        • memory/1304-146-0x0000000000000000-mapping.dmp

        • memory/1304-154-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/1304-149-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/4776-150-0x0000000000000000-mapping.dmp

        • memory/4776-153-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/4776-155-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/4908-145-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/4908-142-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/4908-138-0x0000000000000000-mapping.dmp

        • memory/4908-152-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/5100-148-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/5100-139-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/5100-132-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/5100-134-0x0000000010410000-0x0000000010475000-memory.dmp

          Filesize

          404KB