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Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18/09/2024, 11:11

General

  • Target

    e8fcccc14df4c8fbde4223b16fdb4e63_JaffaCakes118.exe

  • Size

    385KB

  • MD5

    e8fcccc14df4c8fbde4223b16fdb4e63

  • SHA1

    6bb4317b855e9f07c9f63b33455eeaa7335bfade

  • SHA256

    58cb07fecced83dfe6a4999921297ad94248f47935568913aa2a1a60de1d330a

  • SHA512

    8cb6aab343972ef7384c6e8e4d2418e168c35e448a4e1183d650776762c407239d265838fe1c03bd10cf4415238c4e7b08ed9a9d95a62f70bcc4f50561b01c1c

  • SSDEEP

    3072:ZpXsDgp6KE5SNnxqFUKpMgcTPaAp3DLW11eJzf:ZpEmxqFUKigcTSApnW1i

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

79.172.242.28:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-6PPTSU

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • 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 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8fcccc14df4c8fbde4223b16fdb4e63_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e8fcccc14df4c8fbde4223b16fdb4e63_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2720
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Subvert Trust Controls: Mark-of-the-Web Bypass
      • System Location Discovery: System Language Discovery
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\8778\name.exe.lnk" /f
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2840
    • C:\Users\Admin\AppData\Local\Temp\svhost.exe
      "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
      2⤵
      • Executes dropped EXE
      PID:2320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\8778\name.exe

    Filesize

    385KB

    MD5

    e8fcccc14df4c8fbde4223b16fdb4e63

    SHA1

    6bb4317b855e9f07c9f63b33455eeaa7335bfade

    SHA256

    58cb07fecced83dfe6a4999921297ad94248f47935568913aa2a1a60de1d330a

    SHA512

    8cb6aab343972ef7384c6e8e4d2418e168c35e448a4e1183d650776762c407239d265838fe1c03bd10cf4415238c4e7b08ed9a9d95a62f70bcc4f50561b01c1c

  • C:\Users\Admin\AppData\Local\Temp\svhost.exe

    Filesize

    1.6MB

    MD5

    32827e69b293b99013bbbe37d029245d

    SHA1

    bc9f80a38f09354d71467a05b0c5a82c3f7dac53

    SHA256

    9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

    SHA512

    58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

  • memory/2320-12-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2320-25-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2320-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2320-20-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2320-17-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2320-15-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2320-13-0x0000000000240000-0x000000000025B000-memory.dmp

    Filesize

    108KB

  • memory/2720-2-0x00000000747F0000-0x0000000074D9B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-1-0x00000000747F0000-0x0000000074D9B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-0-0x00000000747F1000-0x00000000747F2000-memory.dmp

    Filesize

    4KB

  • memory/2720-28-0x00000000747F0000-0x0000000074D9B000-memory.dmp

    Filesize

    5.7MB