Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2024 22:51

General

  • Target

    e7e1894e1d0f29a19852739fff0eb940c8943166f6dd8ec9686c05fe7f440124.exe

  • Size

    1.5MB

  • MD5

    8c68c01c09f7f8542589548aca1ea076

  • SHA1

    7765c552d6f99d6b04f617af17e59cea4a59585d

  • SHA256

    e7e1894e1d0f29a19852739fff0eb940c8943166f6dd8ec9686c05fe7f440124

  • SHA512

    2b66082b5ceef9399011e34750185606652f8d2a3166719d582326db682d0807ce698986d2c8047d78b76527a16e387d6f783b19afb04b02cf3df59696aaa1a0

  • SSDEEP

    24576:ID39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJBk:IF+QrFUBgq25eKbk

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.

  • Remcos family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 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\e7e1894e1d0f29a19852739fff0eb940c8943166f6dd8ec9686c05fe7f440124.exe
    "C:\Users\Admin\AppData\Local\Temp\e7e1894e1d0f29a19852739fff0eb940c8943166f6dd8ec9686c05fe7f440124.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:2316
    • 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:2652
      • 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:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabFB21.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    1.5MB

    MD5

    5e1bbc259a76b7b9ff631773a1ca8388

    SHA1

    df50ad4787c9515daab5f4ef386a6598e262cf22

    SHA256

    e31510c2ca8bdf75f965dce124a97ccd5625331a649512be076aede278df450c

    SHA512

    0f1d8fdc3bfe828e2e4c134cbb292b0139fef1232ce652ef9db87bde97fbf25d5e144c9f202995b27164a481c1c771f6e97c2390b6db465b3aac0d209123b6a0

  • memory/2316-2-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-10-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-11-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-23-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-30-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-1-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-0-0x00000000749D1000-0x00000000749D2000-memory.dmp

    Filesize

    4KB

  • memory/2652-56-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-31-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-39-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-40-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2708-47-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-53-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2708-61-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-63-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-62-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-58-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-57-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-41-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-49-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-45-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-43-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2708-66-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB