Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 08:44

General

  • Target

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe

  • Size

    1.0MB

  • MD5

    1b968f62b9672831c42e1cc776473a4b

  • SHA1

    14634650057f53408c9da09215bed0b08eb1f287

  • SHA256

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772

  • SHA512

    53e58d80069bfa0159c88598d544ff009c6823150b886e606b8ce00bc3d1c8619c8ce495fc564e5fc6d397a0c461d707c30684ee2d622970230a84b40401ab59

  • SSDEEP

    24576:mF1lOimK6SfT7rEu/hXpOfTi0kIU4y41sYBpJ312Zq:IZfou/hXYf3Lt11TJl2U

Malware Config

Extracted

Family

remcos

Botnet

STHost

C2

89.249.73.162:2479

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-TH3UQH

  • 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.

  • 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 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\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2984
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\siRiSxOKgeg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2248
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp49DC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2732
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2940

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    f504ccdb3d50f096cd1cf90cb286ea9f

    SHA1

    0268e33e30172bcc1fe96532f66c2f565a2628e4

    SHA256

    2b81a07d3597c4ab7e9d1580c3b53619d63388afaecebb8a9add2f645915cc7a

    SHA512

    cabc12096868474612b8c27afa9c9ecc016d92214160cf29543759041a256da92cff98b0bc6e113c255c951702e425ed16746b620aec3df80b209a91f7dcbf9a

  • C:\Users\Admin\AppData\Local\Temp\tmp49DC.tmp

    Filesize

    1KB

    MD5

    de09b78c1aefe7986432c97b6119ec9a

    SHA1

    0f7e68633fe032e32d81fa6f1e4d7998f370fe57

    SHA256

    c122723c7f647de624e6ab85acd688ee80f2351a659db24c2505c7d693c303e6

    SHA512

    a6e0948ec5c1e2a6f80d31a6adbed1c67e4d9dbadf55cebf28383bcf8f4ab18562f7b5cc513cec738288d0396aa498d616b232c9ae62f9a2050cdeae92ea2503

  • memory/2940-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2940-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2940-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2984-1-0x0000000000B00000-0x0000000000C06000-memory.dmp

    Filesize

    1.0MB

  • memory/2984-37-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2984-3-0x00000000004B0000-0x00000000004D0000-memory.dmp

    Filesize

    128KB

  • memory/2984-5-0x0000000005E10000-0x0000000005ED0000-memory.dmp

    Filesize

    768KB

  • memory/2984-0-0x000000007419E000-0x000000007419F000-memory.dmp

    Filesize

    4KB

  • memory/2984-2-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2984-4-0x0000000000560000-0x0000000000574000-memory.dmp

    Filesize

    80KB