Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    29-12-2024 03:02

General

  • Target

    Document.exe

  • Size

    715KB

  • MD5

    198ec1f69b5a33f3cc86502a1eed6d3b

  • SHA1

    c8cfb04f36d1d819538f080c7e158987114c2602

  • SHA256

    3ff0c7aa1953da8ec564575b0200453a7a0da774072b12fb1672f38aeef2b770

  • SHA512

    f96160f0e33226737559d6d28d60c1e5fefbd87656f76d0755ddf501935da6ed649b6fffd766ebde84bf6676be055beeb52bd2753235438b00c2528f016add2c

  • SSDEEP

    12288:HcELQF69pTfJghb83Ox3gNQ4z2wrnS6vbP5y0ZdG8T39G/sYEw2Vy:H5fp0l3Pk2J4bo+dpw2

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

RemoteHost

C2

salford1.ddns.net:2404

salford2.ddns.net:2404

salford3.ddns.net:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • 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-56OLZQ

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document.exe
    "C:\Users\Admin\AppData\Local\Temp\Document.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Document.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2948
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hlzimEOLBqvkW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3811.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2872
    • C:\Users\Admin\AppData\Local\Temp\Document.exe
      "C:\Users\Admin\AppData\Local\Temp\Document.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\remcos\logs.dat

    Filesize

    148B

    MD5

    ab833bdd3e8212c09e8006ce050cdb3e

    SHA1

    b5337f2f495082c0732cb10587238d5bbebffdde

    SHA256

    bd120877501218950181f374eca45efcd55159c719a845e26ece793f8729bf8d

    SHA512

    c89b9987df226f1661781331f74846480e3148f1f5bbb0169b82f58501b34a4f4c082d2b4598fe4963f1077fefe33bbe96eab1c81b15d8d401e7de0ef863039a

  • memory/2604-0-0x0000000074531000-0x0000000074532000-memory.dmp

    Filesize

    4KB

  • memory/2604-1-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/2604-2-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/2604-3-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/2604-4-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/2604-34-0x0000000074530000-0x0000000074ADB000-memory.dmp

    Filesize

    5.7MB

  • memory/2808-20-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-30-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2808-31-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-18-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-17-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-16-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-14-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-27-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-15-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-25-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-10-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-12-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-37-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB

  • memory/2808-26-0x0000000000400000-0x0000000000479000-memory.dmp

    Filesize

    484KB