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Analysis

  • max time kernel
    148s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/08/2024, 11:51

General

  • Target

    0125adef6e9eed738ebac6e35c21c5ea.exe

  • Size

    482KB

  • MD5

    0125adef6e9eed738ebac6e35c21c5ea

  • SHA1

    ea37d0d7f4b5f9d8577ade5c1a2f9c6558c2ca2d

  • SHA256

    847f0f5e71d536638fbd6c3141b0508c9f3ae1e1e4e9619ebc4e65b627a7c5d4

  • SHA512

    49e6134cf459de8c9a778a511b03bd514b222c9c98849ffb1dffd315911eb095677ae4787132ec32a7cdaafffb68d44696ee2db55348c3c106b90a5a507549f7

  • SSDEEP

    6144:STz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrnT4:STlrYw1RUh3NFn+N5WfIQIjbs/ZBsT4

Malware Config

Extracted

Family

remcos

Botnet

VOLCANIC ERUPTION

C2

127.0.0.1:1282

www.naichihardware.com:1282

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

    media

  • mouse_option

    false

  • mutex

    Rmc-N7BV4S

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 8 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
    "C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
      C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\abgbzjjmidqeqam"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3752
    • C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
      C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\dwluzbtgwlijtoazft"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:1760
    • C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
      C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\nqrmauehkuawduwdodundc"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1380
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4400,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4236 /prefetch:8
    1⤵
      PID:3896

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\media\logs.dat

      Filesize

      144B

      MD5

      a10b2f3880489279bf94649557bc904c

      SHA1

      57b978b2e674959f739cf8fafee6cfabf6894db0

      SHA256

      1c9219ec6658d8e0c62ad6bf51d7d8bc6f66c9329d2c10b97ad7b4ba10b11995

      SHA512

      d0cbbacc99b1b799ec5134b52bca170a9b6c896c3f7cf044d9a27e85db79c2c1a373f2adbeb7ef210712d7cfdeb53b443b2c922c8bf7cf1830b18fd514f08ecc

    • C:\Users\Admin\AppData\Local\Temp\abgbzjjmidqeqam

      Filesize

      4KB

      MD5

      cda83eba5a004554ccdc061fd3df499c

      SHA1

      58ff2ecb9d47be10335e104896c87c62dc328523

      SHA256

      e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

      SHA512

      f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

    • memory/1380-12-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1380-17-0x0000000000430000-0x00000000004F9000-memory.dmp

      Filesize

      804KB

    • memory/1380-22-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1380-15-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1380-11-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1380-6-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1760-16-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1760-14-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1760-4-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1760-8-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1760-23-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2884-40-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2884-36-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2884-42-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2884-41-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2884-39-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2884-44-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2884-46-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3752-5-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3752-33-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3752-13-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3752-1-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3752-10-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB