Analysis

  • max time kernel
    134s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 10:12

General

  • Target

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe

  • Size

    604KB

  • MD5

    ffc880a6448b251eee7f03809bf0a1bf

  • SHA1

    09e75e38d588b0e99a3f6f85b2dc4a3eebe4ee08

  • SHA256

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d

  • SHA512

    21dbc92495d2afa76e2e0b7243586ce70889e6cf1240222f1c75aab217df9a0287f9b9b5f3c754011ecfec411c2677c3fd091bcb2b620205c2c97db564b7b180

  • SSDEEP

    12288:O+DbgZB778Qed59T3C6g9XltKMYicJgTx5bx4OVEIHDe2RZQioKEAmD:3gZBS9TbgoMpcJ+Tbe7Ye2nOK

Score
10/10

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

NHS

C2

185.189.112.19:30311

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

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    nhs

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_lejjhxgdnt

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
    "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2764
    • 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\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2368
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RqlVhjJtK.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2520
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RqlVhjJtK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC7F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2648
    • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
      "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC7F.tmp

    Filesize

    1KB

    MD5

    c3c51ee5f64805816d2da8a5537a7d18

    SHA1

    2920ef0f377a106f28f282c41513d63f611390b1

    SHA256

    ad5058e0a470cd3d1fa1d92718f6851efdf5ee70ec0f4d8530e616a5b400067e

    SHA512

    96ed71491d5fb9b4d413b57967c2072c90c8c9bf9e75408dfe26e6910652d8e9bdfa1fd7fda9d88ccb1102a57cde1448662d5b2218e188ce9057ecdec60db304

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\H93FD44I8I3EFYRUMSNG.temp

    Filesize

    7KB

    MD5

    edcb7ede855c2cf158893f741fc4a7a6

    SHA1

    ae03d8e0ea87905f0e95a0ce92a7572f57a9acd7

    SHA256

    4e153ba752b78d3d1203a32066d6b2bf974fe90ad2d6e5de160df95ec5402647

    SHA512

    8efb366cea6a76f59cac880127ddea9879fb9a865adf46aeb3da3dddf02c5b390a6f6c587eb1927c6f671e7b4ccc122c09365fbb4604053ca1e2dd801774a5ec

  • memory/2764-5-0x0000000000600000-0x0000000000616000-memory.dmp

    Filesize

    88KB

  • memory/2764-37-0x00000000743A0000-0x0000000074A8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2764-4-0x0000000000580000-0x000000000058E000-memory.dmp

    Filesize

    56KB

  • memory/2764-0-0x00000000743AE000-0x00000000743AF000-memory.dmp

    Filesize

    4KB

  • memory/2764-6-0x00000000012B0000-0x0000000001310000-memory.dmp

    Filesize

    384KB

  • memory/2764-7-0x00000000743AE000-0x00000000743AF000-memory.dmp

    Filesize

    4KB

  • memory/2764-8-0x00000000743A0000-0x0000000074A8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2764-2-0x00000000743A0000-0x0000000074A8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2764-1-0x0000000001380000-0x000000000141C000-memory.dmp

    Filesize

    624KB

  • memory/2764-3-0x00000000005E0000-0x00000000005F8000-memory.dmp

    Filesize

    96KB

  • memory/2776-21-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2776-29-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-27-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-32-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-23-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-33-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-34-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2776-25-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB