Analysis

  • max time kernel
    144s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    03-09-2024 04:44

General

  • Target

    d6c69f2a5e78ae36b23f18cda3188b1df50a2e7cc1bbd9ae79008c9a070ff8b6.exe

  • Size

    2.2MB

  • MD5

    7b2f2592d4c6b19dd8ab8f78778cde9b

  • SHA1

    29d02c3eb53e75ca642e018ceb938aae8b4e7e83

  • SHA256

    d6c69f2a5e78ae36b23f18cda3188b1df50a2e7cc1bbd9ae79008c9a070ff8b6

  • SHA512

    0d86779afac9727c9851cdb4012ad49c4ee19fee09f203aa62f152cfaf9938097146291c1af1a1d2e281096a2012d19ded13d5641016c2fe3827fdd973bef2c6

  • SSDEEP

    24576:XD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rO/L:Xp7E+QrFUBgq2U

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

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

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d6c69f2a5e78ae36b23f18cda3188b1df50a2e7cc1bbd9ae79008c9a070ff8b6.exe
    "C:\Users\Admin\AppData\Local\Temp\d6c69f2a5e78ae36b23f18cda3188b1df50a2e7cc1bbd9ae79008c9a070ff8b6.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3004
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2748
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    f9ffd0e40570131051c74b0a51290385

    SHA1

    e16df19c1aadfdf2e34bb90d0478e223e207e93a

    SHA256

    30a8b8475d05cb11aae93355adcbd618075fff95fc37762dea27256c29d81820

    SHA512

    eeb391e28c4e4d9518d93ff87118af87511aa4a41c2265d4b532583d770054f9802b7a88919d54704ae7804b7aca2da5450fb711767d4bb89cdbc23e87300780

  • C:\Users\Admin\AppData\Local\Temp\CabC6A9.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

    Filesize

    2.2MB

    MD5

    9310ba9276088f20f70097d4ec0688d8

    SHA1

    937f11dbe6ba59f0a1a3ab3aad5511cb1db94f96

    SHA256

    066c52fc3499d711f001ad12c0a60abdf62225a736f81108703ca792ae793bf8

    SHA512

    79826dc5c206f607a6a9ce6a0782be1bffce4544879d379c135456c67d5bb9c871bb53f62812fba0583694ba8b39f1f552e13e6a1162f1556b1c37a8759b080a

  • memory/2628-48-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-56-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-66-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-63-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-57-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-58-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-61-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-50-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2628-53-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-47-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-46-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2628-49-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2748-45-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/2748-44-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/2748-34-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/2748-62-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/2748-35-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-13-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-0-0x0000000073FB1000-0x0000000073FB2000-memory.dmp

    Filesize

    4KB

  • memory/3004-2-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-1-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-32-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-12-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-26-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB

  • memory/3004-25-0x0000000073FB0000-0x000000007455B000-memory.dmp

    Filesize

    5.7MB