Analysis

  • max time kernel
    146s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19-05-2024 23:16

General

  • Target

    5bfc4a0b0e7484ff63f2eb66b45186b7_JaffaCakes118.exe

  • Size

    624KB

  • MD5

    5bfc4a0b0e7484ff63f2eb66b45186b7

  • SHA1

    804f350c5034fc13fcc3d49e72de98799e301fb2

  • SHA256

    9ab651c11036df65785bcd01fe6ecb68a9b0beb56579b76c350dbd3f6960f0ae

  • SHA512

    084dcda591290c89d1fec84c7868d65522d193524cbbc15d61bec710f617535bf77386ea5a6c3c1b366cce216dd7310d84271847775497533648d04b8ae00620

  • SSDEEP

    6144:Fp7rCb1Ekm7tzWFMLP1Coq4nFNDsFWhMh0Q/AISm9rY1NOC8IBfmbhscwovdC5OB:FJrCZW9WGLP1MWaym3C8qmbyo05OcEl

Malware Config

Extracted

Family

remcos

Version

1.8.1 Pro

Botnet

MicrosoftDll

C2

1.habladourf.top:24043

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    crrcs.exe

  • copy_folder

    Microsoft

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    ERDATYFVUASG_AGSJHDJDJG-GR2269

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    crrcs.exe

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5bfc4a0b0e7484ff63f2eb66b45186b7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5bfc4a0b0e7484ff63f2eb66b45186b7_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2592
      • C:\Windows\SysWOW64\PING.EXE
        PING 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2712
      • C:\Windows\SysWOW64\Microsoft\crrcs.exe
        "C:\Windows\SysWOW64\Microsoft\crrcs.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.bat

    Filesize

    90B

    MD5

    163f2af0d421cff56e30d04e89363fe7

    SHA1

    5116aa1cad828ecd3e0819c15523839901fa6eac

    SHA256

    2f9c8881dd083f02446f616ce3fbbcb008bb92b21cfd5dc85652a38d297eebf5

    SHA512

    303ca46c8319393f7257088328da0bcd4b5a66de64fb15fd0e306dccf4985d8179d73c346d44c574807436aedd7da8cabb0c24494876fb5c151dd62d174bc8fb

  • C:\Windows\SysWOW64\Microsoft\crrcs.exe

    Filesize

    624KB

    MD5

    5bfc4a0b0e7484ff63f2eb66b45186b7

    SHA1

    804f350c5034fc13fcc3d49e72de98799e301fb2

    SHA256

    9ab651c11036df65785bcd01fe6ecb68a9b0beb56579b76c350dbd3f6960f0ae

    SHA512

    084dcda591290c89d1fec84c7868d65522d193524cbbc15d61bec710f617535bf77386ea5a6c3c1b366cce216dd7310d84271847775497533648d04b8ae00620

  • memory/2608-33-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-39-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-27-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-28-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-38-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-37-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-21-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-22-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-23-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-29-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-36-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-35-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-26-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-30-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-31-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-32-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2608-34-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2784-0-0x0000000000220000-0x000000000029B000-memory.dmp

    Filesize

    492KB

  • memory/2784-2-0x0000000000401000-0x000000000041A000-memory.dmp

    Filesize

    100KB

  • memory/2784-13-0x0000000000400000-0x000000000049C000-memory.dmp

    Filesize

    624KB

  • memory/2784-1-0x0000000077D7F000-0x0000000077D80000-memory.dmp

    Filesize

    4KB

  • memory/2784-15-0x0000000000401000-0x000000000041A000-memory.dmp

    Filesize

    100KB

  • memory/2784-14-0x0000000000220000-0x000000000029B000-memory.dmp

    Filesize

    492KB