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Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    02/09/2024, 09:20

General

  • Target

    SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe

  • Size

    953KB

  • MD5

    e7da9da76702fefa71e67e7c2d67eb70

  • SHA1

    c97603e9070393fa9bb56e8674512cde49bfe444

  • SHA256

    84bb8bba33e1a515260b02421d72da6ad0d685d432c64c572a230337dca28c54

  • SHA512

    37a6f8be2cc4835a4bb15d5e4f86d1c9390cb94480642dfee08210640e679d694a8031fbd68d8ec1b84f8d4ff01ad33794562ec1456c262a4d10bc4fd483fd4c

  • SSDEEP

    24576:B0R6OKfNjIxTUYFb5rTGx+Up4/r6HOzHEEg5d:eGfqV5t5rKTa/9HEV

Malware Config

Extracted

Family

remcos

Botnet

blvinc

C2

blv23728.ddns.net:1973

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-NGC4XU

  • 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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2672
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2992
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe /stext "C:\Users\Admin\AppData\Local\Temp\uzfmjfbozegbstdcqwfn"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2828
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe /stext "C:\Users\Admin\AppData\Local\Temp\ftkfjxlinmyouzrghhzoygt"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2920
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.34.20311.495.exe /stext "C:\Users\Admin\AppData\Local\Temp\pwyxkqwjbuqtfgnkqrmijlgdrc"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    eaea255afedabe89ee6fa005770c4456

    SHA1

    63f41c340f3477a15a80c90a5339af4ab9f7675b

    SHA256

    e74bd062be1f23c08f7cacdf015d9d9298484a58355cb75bccb62acc9f08d964

    SHA512

    0661d42ae66970d1c9cc9744157385d5ad791767fba7169fb7a472a3ec996629fa3687df44a8e652313174f8b620fbea966b730e6be366e38981113d8185ec1e

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/1068-53-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1068-51-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1068-52-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2604-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2604-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-88-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-7-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-79-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-72-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2604-63-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2604-64-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2604-60-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2672-0-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

    Filesize

    4KB

  • memory/2672-32-0x0000000073F80000-0x000000007466E000-memory.dmp

    Filesize

    6.9MB

  • memory/2672-3-0x0000000000AD0000-0x0000000000AE8000-memory.dmp

    Filesize

    96KB

  • memory/2672-5-0x0000000004D90000-0x0000000004E50000-memory.dmp

    Filesize

    768KB

  • memory/2672-4-0x0000000073F80000-0x000000007466E000-memory.dmp

    Filesize

    6.9MB

  • memory/2672-2-0x0000000073F80000-0x000000007466E000-memory.dmp

    Filesize

    6.9MB

  • memory/2672-1-0x0000000000AF0000-0x0000000000BE0000-memory.dmp

    Filesize

    960KB

  • memory/2828-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2828-47-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2828-49-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2920-48-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2920-45-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2920-46-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2920-44-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB