Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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 6 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 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 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 behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
      "C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe"
      2⤵
        PID:1916
      • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
        "C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe"
        2⤵
          PID:864
        • 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:212
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\lusvdtyzjkzutcxavlaztcipzxwq"
            3⤵
              PID:2936
            • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
              C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\lusvdtyzjkzutcxavlaztcipzxwq"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:2284
            • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
              C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\vwxodmibxsrzvqmeewmbehcgimorlug"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:4084
            • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
              C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\yqdzeetvlajmfxiivhzcgtxpjsxanfxzuc"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2092

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          bebda63dd539df82c177327627555b3d

          SHA1

          d809c601f7ce0b9a9b3ed5bf43604c6414c67547

          SHA256

          3b6576ba40b87d08fb00659d3d94cefe91dd937b33e422c4ab5e7105318ff0fc

          SHA512

          37dd25021e8c9b905d8d50602a1e1f26b0d4a67f003b8c6844ce45a5df1a209bad0c6df9d3bbf8f4c4fc5321709ce9501f0b08fd0ec30063f202fea316270591

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

          Filesize

          4KB

          MD5

          ea01dd92b15d2f570f6b167dad2d1fd0

          SHA1

          7b89141d4c3eb2f29d096f28a9bfe66eb006224a

          SHA256

          0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

          SHA512

          0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

        • memory/212-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-81-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-17-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-89-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-88-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-80-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-73-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-71-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-70-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-67-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-66-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/212-65-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/212-62-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/212-12-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-35-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/212-72-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/632-8-0x0000000074AB0000-0x0000000075260000-memory.dmp

          Filesize

          7.7MB

        • memory/632-3-0x0000000005550000-0x00000000055E2000-memory.dmp

          Filesize

          584KB

        • memory/632-0-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

          Filesize

          4KB

        • memory/632-9-0x0000000006890000-0x0000000006950000-memory.dmp

          Filesize

          768KB

        • memory/632-7-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

          Filesize

          4KB

        • memory/632-1-0x0000000000B70000-0x0000000000C68000-memory.dmp

          Filesize

          992KB

        • memory/632-10-0x0000000006B30000-0x0000000006BCC000-memory.dmp

          Filesize

          624KB

        • memory/632-16-0x0000000074AB0000-0x0000000075260000-memory.dmp

          Filesize

          7.7MB

        • memory/632-6-0x00000000060D0000-0x00000000060E8000-memory.dmp

          Filesize

          96KB

        • memory/632-2-0x0000000005A20000-0x0000000005FC4000-memory.dmp

          Filesize

          5.6MB

        • memory/632-5-0x0000000074AB0000-0x0000000075260000-memory.dmp

          Filesize

          7.7MB

        • memory/632-4-0x0000000005520000-0x000000000552A000-memory.dmp

          Filesize

          40KB

        • memory/2092-58-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2092-49-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2092-52-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2284-43-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2284-51-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2284-60-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2284-48-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2284-57-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4084-53-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4084-44-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4084-47-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4084-50-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB