Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-02-2025 03:52

General

  • Target

    f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517.exe

  • Size

    610KB

  • MD5

    d0627ad0019378cd5a6f23eb4a0f1c8f

  • SHA1

    9626f6c80883b8203b299a1d751e136bf5e16e54

  • SHA256

    f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

  • SHA512

    8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8

  • SSDEEP

    12288:p98UWQxHvxTMN0X4YcXGw9CIOmUwuTRQXgz3sK7hvhO7G:paQxG3YWGkCIhUwuTRQwrl9e

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount

C2

107.174.65.146:1194

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    googlegroupaccount.exe

  • copy_folder

    googlegroupaccount

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %Temp%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-1MDOQC

  • 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.

  • Remcos family
  • 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

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 3 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517.exe
    "C:\Users\Admin\AppData\Local\Temp\f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517.exe
      "C:\Users\Admin\AppData\Local\Temp\f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
        "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2828
        • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
          "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2928
          • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
            C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\hryxawcxsffilhsxhhtuhfhszcmbs"
            5⤵
            • Executes dropped EXE
            PID:900
          • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
            C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\hryxawcxsffilhsxhhtuhfhszcmbs"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2252
          • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
            C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\jmdqaonrgnxvnngbysgojjcjarwcmswc"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2120
          • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
            C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\tojat"
            5⤵
            • Executes dropped EXE
            PID:1624
          • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
            C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\tojat"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    7126e27d4cc2619acfb6110b41e6c34d

    SHA1

    bc57119ffd0ffbe85a17ee0fe9fa51b4cbf6be98

    SHA256

    6d3137ec49b3862617bac9ba50b2acb9ba3667f4a6181712359fb50f55bcacb1

    SHA512

    b9cfda44522e037872558d56238050dcf3ec06ecf44f10123c23b962aefcb6cb6d622f6a506cd5f036b340d92296cb8827d23a3277d6a2e6391886b7aa4051cd

  • C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe

    Filesize

    610KB

    MD5

    d0627ad0019378cd5a6f23eb4a0f1c8f

    SHA1

    9626f6c80883b8203b299a1d751e136bf5e16e54

    SHA256

    f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

    SHA512

    8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/2120-62-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2120-68-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2120-66-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2252-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2252-67-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2252-64-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2252-58-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2364-9-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-6-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-3-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-7-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-8-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-12-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-15-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2364-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2364-5-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2788-74-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2788-72-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2788-75-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2828-23-0x00000000000B0000-0x0000000000150000-memory.dmp

    Filesize

    640KB

  • memory/2828-24-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2828-25-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2828-45-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2928-52-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-39-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-53-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-43-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-48-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-50-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-44-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-46-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-47-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2928-40-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-109-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-125-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-124-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-82-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2928-86-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2928-85-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2928-87-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-116-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-92-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-93-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-100-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-101-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/2928-108-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/3020-14-0x0000000074660000-0x0000000074D4E000-memory.dmp

    Filesize

    6.9MB

  • memory/3020-1-0x0000000000880000-0x0000000000920000-memory.dmp

    Filesize

    640KB

  • memory/3020-2-0x0000000074660000-0x0000000074D4E000-memory.dmp

    Filesize

    6.9MB

  • memory/3020-0-0x000000007466E000-0x000000007466F000-memory.dmp

    Filesize

    4KB