Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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 01:35

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 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 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:3748
    • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
      "C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe"
      2⤵
        PID:764
      • 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: GetForegroundWindowSpam
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1244
        • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
          C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\yoziojrkshxeladcxluydjuzvr"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1276
        • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
          C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\aqmbpbcmgqpjvozgpwhrgopqexujox"
          3⤵
            PID:3532
          • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
            C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\aqmbpbcmgqpjvozgpwhrgopqexujox"
            3⤵
              PID:2608
            • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
              C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\aqmbpbcmgqpjvozgpwhrgopqexujox"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:456
            • C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe
              C:\Users\Admin\AppData\Local\Temp\8b4d43e5b2ff9fe2d915daa5c884832dd0635b231274236bfa4863d0220d4eba.exe /stext "C:\Users\Admin\AppData\Local\Temp\kkrtpunfuyhoyvnkygctrbjznmeshismb"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4736

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          11d813a1c7cbc5406ce3010ade12d1f6

          SHA1

          3e18076bb4144a84e60e29d38069875d89687f77

          SHA256

          a0af5500308a8c3bdf9a6e1224216bcd592f5a956838d16ed7efd6b7e8cd61f3

          SHA512

          098686070b4e6fe5754b75e497da03461dca1f32b16092c6ceb5ae39df3ec17e0684d804cb65b6a24f33a57d62cfb6e183234472bc8ce17433a66f485fd687d5

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

          Filesize

          4KB

          MD5

          1891919175c888ce82e9bd8a047b01ad

          SHA1

          502a6892a5d27ecb791ac5aa6d8586944f540453

          SHA256

          a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

          SHA512

          8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

        • memory/456-42-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/456-44-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/456-54-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/456-47-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1244-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-59-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1244-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-92-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-85-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-13-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-84-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-16-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-19-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-77-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-35-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-76-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-39-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-69-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-68-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-64-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1244-62-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1244-63-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1276-57-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1276-40-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1276-46-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1276-45-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1276-55-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3748-2-0x0000000005FA0000-0x0000000006544000-memory.dmp

          Filesize

          5.6MB

        • memory/3748-5-0x0000000074780000-0x0000000074F30000-memory.dmp

          Filesize

          7.7MB

        • memory/3748-1-0x0000000000E40000-0x0000000000F38000-memory.dmp

          Filesize

          992KB

        • memory/3748-7-0x000000007478E000-0x000000007478F000-memory.dmp

          Filesize

          4KB

        • memory/3748-4-0x00000000059C0000-0x00000000059CA000-memory.dmp

          Filesize

          40KB

        • memory/3748-3-0x0000000005920000-0x00000000059B2000-memory.dmp

          Filesize

          584KB

        • memory/3748-8-0x0000000074780000-0x0000000074F30000-memory.dmp

          Filesize

          7.7MB

        • memory/3748-9-0x0000000006B80000-0x0000000006C40000-memory.dmp

          Filesize

          768KB

        • memory/3748-10-0x0000000006E40000-0x0000000006EDC000-memory.dmp

          Filesize

          624KB

        • memory/3748-6-0x0000000005C50000-0x0000000005C68000-memory.dmp

          Filesize

          96KB

        • memory/3748-20-0x0000000074780000-0x0000000074F30000-memory.dmp

          Filesize

          7.7MB

        • memory/3748-0-0x000000007478E000-0x000000007478F000-memory.dmp

          Filesize

          4KB

        • memory/4736-48-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4736-50-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4736-49-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB