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Analysis

  • max time kernel
    141s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2025, 06:13

General

  • Target

    7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe

  • Size

    1.8MB

  • MD5

    3a219547f510eb35578328582fee3d73

  • SHA1

    346bbbcff1e8a30cdb4538f1215b1ac45efb4960

  • SHA256

    7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd

  • SHA512

    029b085ac2318bd10058472bbe80f2080a672107a8c9819c1ffc17a63b3035e2821e123a95f4cc48d44ef9fdab7ce8a8e2f0c54bca378925b47481aeee02e8af

  • SSDEEP

    24576:ND39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH67:NF+QrFUBgq25eKu67

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
    "C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2844
    • 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:1188
      • 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:1316

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1.8MB

    MD5

    b68184e50cff46596f402718071b7103

    SHA1

    3a04e3c61d3b678249814cd626bc8aec9059549a

    SHA256

    c0293b6ea924521b3ff554cf0c0b31517645929aadbdf1014bf38fd36d89d6d0

    SHA512

    d5ab585ad6f425dd81f7358112a17a5ecaba5842bf5aee7eed3bb19e383db3a03fef0721db0f7f67981d7bc666615349069ad91d78a0317d286ce357debc5893

  • memory/1188-46-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-34-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-33-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-32-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-31-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1316-42-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-39-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-49-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-44-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-43-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-38-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/1316-35-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2844-2-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2844-5-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2844-0-0x0000000075042000-0x0000000075043000-memory.dmp

    Filesize

    4KB

  • memory/2844-19-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2844-6-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2844-18-0x0000000075042000-0x0000000075043000-memory.dmp

    Filesize

    4KB

  • memory/2844-1-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB

  • memory/2844-30-0x0000000075040000-0x00000000755F1000-memory.dmp

    Filesize

    5.7MB