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Analysis

  • max time kernel
    119s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/09/2024, 17:47

General

  • Target

    e7da9da76702fefa71e67e7c2d67eb70N.exe

  • Size

    953KB

  • MD5

    e7da9da76702fefa71e67e7c2d67eb70

  • SHA1

    c97603e9070393fa9bb56e8674512cde49bfe444

  • SHA256

    84bb8bba33e1a515260b02421d72da6ad0d685d432c64c572a230337dca28c54

  • SHA512

    37a6f8be2cc4835a4bb15d5e4f86d1c9390cb94480642dfee08210640e679d694a8031fbd68d8ec1b84f8d4ff01ad33794562ec1456c262a4d10bc4fd483fd4c

  • SSDEEP

    24576:B0R6OKfNjIxTUYFb5rTGx+Up4/r6HOzHEEg5d:eGfqV5t5rKTa/9HEV

Malware Config

Extracted

Family

remcos

Botnet

blvinc

C2

blv23728.ddns.net:1973

Attributes
  • audio_folder

    MicRecords

  • 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

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NGC4XU

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e7da9da76702fefa71e67e7c2d67eb70N.exe
    "C:\Users\Admin\AppData\Local\Temp\e7da9da76702fefa71e67e7c2d67eb70N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3464
    • 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\e7da9da76702fefa71e67e7c2d67eb70N.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3764
    • C:\Users\Admin\AppData\Local\Temp\e7da9da76702fefa71e67e7c2d67eb70N.exe
      "C:\Users\Admin\AppData\Local\Temp\e7da9da76702fefa71e67e7c2d67eb70N.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2676

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    b7c4b4e7794b79bf6b8f9084147a267a

    SHA1

    dc80ce0762622debe768c1cef8274f66a2516756

    SHA256

    78ca48bb921cd291cf3a115fa0f0c581b722593b43bb75157a140a8f65204427

    SHA512

    3b8588347bc8f22b996d9bd406dc40c27a2b0c623b0bc1124a473015801c55f631e813b3d263580f1fc112a7014d118fef4d7859432e221f3306d0014920f779

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kyggla1v.zlr.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2676-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-82-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3464-2-0x0000000005E00000-0x00000000063A4000-memory.dmp

    Filesize

    5.6MB

  • memory/3464-20-0x0000000075110000-0x00000000758C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3464-10-0x00000000091F0000-0x000000000928C000-memory.dmp

    Filesize

    624KB

  • memory/3464-9-0x0000000006AF0000-0x0000000006BB0000-memory.dmp

    Filesize

    768KB

  • memory/3464-8-0x0000000075110000-0x00000000758C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3464-7-0x000000007511E000-0x000000007511F000-memory.dmp

    Filesize

    4KB

  • memory/3464-6-0x0000000005DE0000-0x0000000005DF8000-memory.dmp

    Filesize

    96KB

  • memory/3464-5-0x0000000075110000-0x00000000758C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3464-4-0x00000000057D0000-0x00000000057DA000-memory.dmp

    Filesize

    40KB

  • memory/3464-3-0x0000000005850000-0x00000000058E2000-memory.dmp

    Filesize

    584KB

  • memory/3464-1-0x0000000000D00000-0x0000000000DF0000-memory.dmp

    Filesize

    960KB

  • memory/3464-0-0x000000007511E000-0x000000007511F000-memory.dmp

    Filesize

    4KB

  • memory/3764-39-0x00000000055A0000-0x00000000058F4000-memory.dmp

    Filesize

    3.3MB

  • memory/3764-41-0x0000000005B10000-0x0000000005B5C000-memory.dmp

    Filesize

    304KB

  • memory/3764-40-0x0000000005A70000-0x0000000005A8E000-memory.dmp

    Filesize

    120KB

  • memory/3764-45-0x0000000006030000-0x0000000006062000-memory.dmp

    Filesize

    200KB

  • memory/3764-46-0x0000000071920000-0x000000007196C000-memory.dmp

    Filesize

    304KB

  • memory/3764-56-0x0000000006010000-0x000000000602E000-memory.dmp

    Filesize

    120KB

  • memory/3764-57-0x0000000006C40000-0x0000000006CE3000-memory.dmp

    Filesize

    652KB

  • memory/3764-60-0x00000000073D0000-0x0000000007A4A000-memory.dmp

    Filesize

    6.5MB

  • memory/3764-61-0x0000000006D90000-0x0000000006DAA000-memory.dmp

    Filesize

    104KB

  • memory/3764-62-0x0000000006E00000-0x0000000006E0A000-memory.dmp

    Filesize

    40KB

  • memory/3764-63-0x0000000007010000-0x00000000070A6000-memory.dmp

    Filesize

    600KB

  • memory/3764-64-0x0000000006F90000-0x0000000006FA1000-memory.dmp

    Filesize

    68KB

  • memory/3764-65-0x0000000006FC0000-0x0000000006FCE000-memory.dmp

    Filesize

    56KB

  • memory/3764-66-0x0000000006FD0000-0x0000000006FE4000-memory.dmp

    Filesize

    80KB

  • memory/3764-67-0x00000000070D0000-0x00000000070EA000-memory.dmp

    Filesize

    104KB

  • memory/3764-68-0x00000000070B0000-0x00000000070B8000-memory.dmp

    Filesize

    32KB

  • memory/3764-71-0x0000000075190000-0x0000000075940000-memory.dmp

    Filesize

    7.7MB

  • memory/3764-38-0x0000000005530000-0x0000000005596000-memory.dmp

    Filesize

    408KB

  • memory/3764-28-0x0000000004B40000-0x0000000004BA6000-memory.dmp

    Filesize

    408KB

  • memory/3764-27-0x0000000004A20000-0x0000000004A42000-memory.dmp

    Filesize

    136KB

  • memory/3764-26-0x0000000075190000-0x0000000075940000-memory.dmp

    Filesize

    7.7MB

  • memory/3764-25-0x0000000004C40000-0x0000000005268000-memory.dmp

    Filesize

    6.2MB

  • memory/3764-23-0x00000000020E0000-0x0000000002116000-memory.dmp

    Filesize

    216KB

  • memory/3764-24-0x0000000075190000-0x0000000075940000-memory.dmp

    Filesize

    7.7MB

  • memory/3764-21-0x000000007519E000-0x000000007519F000-memory.dmp

    Filesize

    4KB