Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    05-09-2024 10:58

General

  • Target

    8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe

  • Size

    968KB

  • MD5

    fce908c3d656198dce6bafb77f0b9638

  • SHA1

    0952a34cffd6ab444ed21889e0fa5eac6019ac5a

  • SHA256

    8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba

  • SHA512

    7796c6ba87d4d03d0a88e9ec1e71fe63c43fefaf2849f432413e5ab7763d087785661ba603026df0ea90db4bae770827a78f3694fb5071408016fa39acd94c7a

  • SSDEEP

    12288:2d0NXLNiM0oqUO2rMQvQtcRyzCKBCDZvtcVRUyDWrwye9UIZq6UrN5GMAYr2ao0q:nbNiMN17rMtcoa22yDWrwye9XZq641o

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

magaji.duckdns.org:2404

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-ORKMG9

  • 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 7 IoCs

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

  • NirSoft MailPassView 3 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 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
    "C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
      "C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2312
      • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
        C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\paygnmkwxbykr"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1444
      • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
        C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\acdzofvyljqxbbwnv"
        3⤵
          PID:3052
        • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
          C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\acdzofvyljqxbbwnv"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:1432
        • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
          C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwijpxorhricdpsrenjg"
          3⤵
            PID:924
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwijpxorhricdpsrenjg"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2316
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\yjtieoddjslhjgtrlwywoo"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2140
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\alybfhnxxadulmhdvhlxzbwlt"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2504
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\lfdlfzyqlivzvavhmryzcgrccqka"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1936

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        2c47ece45f385d11c9aa34c512ad8856

        SHA1

        0cd629f29ad77eae5cff9747755cbe62f5f3c2c7

        SHA256

        2c48ea6518be896f162e582bd20ec11ec9a1bda4a034651020b5b74c83358aae

        SHA512

        784e9b6908ee594264b3b367dcc6ddd2e5e7089116037b2ae8ddb6a84cc8ad0862140a2480c2dd887d6c050eca9c3b17fa26b8d712a10e6f2e5b8ab7ab5fa290

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • memory/1432-64-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1432-67-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1432-68-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1432-70-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1432-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1432-82-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1444-65-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1444-79-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1444-61-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1444-69-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1444-59-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1648-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

        Filesize

        4KB

      • memory/1648-6-0x0000000005AA0000-0x0000000005B60000-memory.dmp

        Filesize

        768KB

      • memory/1648-28-0x00000000745D0000-0x0000000074CBE000-memory.dmp

        Filesize

        6.9MB

      • memory/1648-5-0x00000000745D0000-0x0000000074CBE000-memory.dmp

        Filesize

        6.9MB

      • memory/1648-4-0x00000000745DE000-0x00000000745DF000-memory.dmp

        Filesize

        4KB

      • memory/1648-3-0x0000000000A30000-0x0000000000A48000-memory.dmp

        Filesize

        96KB

      • memory/1648-2-0x00000000745D0000-0x0000000074CBE000-memory.dmp

        Filesize

        6.9MB

      • memory/1648-1-0x0000000000FB0000-0x00000000010A8000-memory.dmp

        Filesize

        992KB

      • memory/2312-39-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-30-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-31-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-32-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-34-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-37-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-8-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-40-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-47-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-50-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-51-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-52-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-56-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-15-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-95-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-92-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-91-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-27-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-24-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2312-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-20-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-9-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2312-83-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2312-87-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2312-86-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2312-88-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2316-72-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2316-74-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2316-73-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB