Analysis

  • max time kernel
    147s
  • 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
    12-09-2024 01:44

General

  • Target

    79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe

  • Size

    925KB

  • MD5

    0e9e305e1e69c435383eb73f66c63530

  • SHA1

    9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec

  • SHA256

    79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

  • SHA512

    1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e

  • SSDEEP

    24576:Ibo2IFemqKLdQ+tExSVoVKbcqmuDaomTzktr:Ic2tlKLzsAqAhtSgt

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Adobe.exe

  • copy_folder

    Adobe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Adobe-OTOIRK

  • 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 3 IoCs

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 7 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 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: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
    "C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3508
    • C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
      "C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
      2⤵
        PID:2928
      • C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
        "C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
        2⤵
        • Checks computer location settings
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1612
        • C:\ProgramData\Adobe\Adobe.exe
          "C:\ProgramData\Adobe\Adobe.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:932
          • C:\ProgramData\Adobe\Adobe.exe
            "C:\ProgramData\Adobe\Adobe.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:5108
            • C:\ProgramData\Adobe\Adobe.exe
              C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\rnhljwxsoyahbirl"
              5⤵
              • Executes dropped EXE
              PID:3336
            • C:\ProgramData\Adobe\Adobe.exe
              C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\rnhljwxsoyahbirl"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:2708
            • C:\ProgramData\Adobe\Adobe.exe
              C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\bhmejpiucgsmewnpcvf"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:1276
            • C:\ProgramData\Adobe\Adobe.exe
              C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjzokhtnqokrocbblgstyi"
              5⤵
              • Executes dropped EXE
              PID:1968
            • C:\ProgramData\Adobe\Adobe.exe
              C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjzokhtnqokrocbblgstyi"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:468

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Adobe\Adobe.exe

      Filesize

      925KB

      MD5

      0e9e305e1e69c435383eb73f66c63530

      SHA1

      9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec

      SHA256

      79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

      SHA512

      1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e

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

      Filesize

      4KB

      MD5

      a7e181f6aa185be0ab0ca68b30406fe6

      SHA1

      58c86162658dc609615b8b6400f85c92506dfdc8

      SHA256

      c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

      SHA512

      49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

    • memory/468-62-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/468-63-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/468-60-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/932-39-0x0000000074970000-0x0000000075120000-memory.dmp

      Filesize

      7.7MB

    • memory/932-29-0x000000007497E000-0x000000007497F000-memory.dmp

      Filesize

      4KB

    • memory/932-32-0x0000000074970000-0x0000000075120000-memory.dmp

      Filesize

      7.7MB

    • memory/932-31-0x000000007497E000-0x000000007497F000-memory.dmp

      Filesize

      4KB

    • memory/932-30-0x0000000074970000-0x0000000075120000-memory.dmp

      Filesize

      7.7MB

    • memory/1276-57-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1276-59-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1276-53-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1612-11-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1612-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1612-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1612-15-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1612-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2708-58-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2708-55-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2708-51-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3508-7-0x000000007505E000-0x000000007505F000-memory.dmp

      Filesize

      4KB

    • memory/3508-4-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/3508-17-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/3508-6-0x0000000005270000-0x0000000005280000-memory.dmp

      Filesize

      64KB

    • memory/3508-8-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/3508-1-0x0000000000550000-0x000000000063C000-memory.dmp

      Filesize

      944KB

    • memory/3508-5-0x0000000005020000-0x000000000502A000-memory.dmp

      Filesize

      40KB

    • memory/3508-10-0x0000000008DC0000-0x0000000008E5C000-memory.dmp

      Filesize

      624KB

    • memory/3508-2-0x0000000005650000-0x0000000005BF4000-memory.dmp

      Filesize

      5.6MB

    • memory/3508-3-0x00000000050A0000-0x0000000005132000-memory.dmp

      Filesize

      584KB

    • memory/3508-9-0x0000000006470000-0x0000000006530000-memory.dmp

      Filesize

      768KB

    • memory/3508-0-0x000000007505E000-0x000000007505F000-memory.dmp

      Filesize

      4KB

    • memory/5108-42-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-36-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-76-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-41-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-46-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-45-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-43-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-40-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-69-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/5108-72-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/5108-73-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/5108-74-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-75-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/5108-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB