Analysis

  • max time kernel
    148s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-09-2024 02:19

General

  • Target

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe

  • Size

    1.0MB

  • MD5

    6aa8b2797c962a2bfbed78a30afa3f4a

  • SHA1

    1c76e253db167d7c6a685282973c1bc80bbe8e5e

  • SHA256

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f

  • SHA512

    ce9ba1c1282e0d87665bbe27749106de3c42ee7b2bc9e741586ad643129c01f2c7421d1afc98b599568c4fd1e229fcf08d19503426b6507db6f45e222903b145

  • SSDEEP

    24576:0HH6h1OoaYANm0loL58KwewFARcqlE3r9HMQKw:k8t0loL58KwLgQ7lMQKw

Malware Config

Extracted

Family

remcos

Botnet

Aug 19.2

C2

method8888.ddns.net:6902

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-U6KI2M

  • 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 2 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 8 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
    "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2192
    • 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\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2812
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GIxoePCFR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2680
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GIxoePCFR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp85D3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2780
    • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
      "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2588
      • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
        C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\irccwesdwuukesgjoinml"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:676
      • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
        C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\tuhmxxdxscmpgzcvxkznwqwj"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:1712
      • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
        C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\dovfypnzgkecrfqzgvuhzdqsecv"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    04710ebc8b9c73ed3d5297928a173667

    SHA1

    d08bbe9c03cc7b5a6da0f7dc4b948fb7e2da33f4

    SHA256

    ef9c88cb3a20ec59256dd0fc5de3eecb095877a048d8a4bff0a4d39d6b84fdad

    SHA512

    8f8332f4d4aa609176885b7a02feca82b32bfa957b008b6129dac7d40a1b10dd4b7bfd1f11d33f47f86977bd78f4dc2c8970cac4997bc6d61fb95ea67ac2b4a3

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmp85D3.tmp

    Filesize

    1KB

    MD5

    8db20a7533a4db662d13bc8f3d22eb2d

    SHA1

    9f30936f23bfe7f68359b18a91f02642579f85e9

    SHA256

    e55111c9ea50ddb7c9d7101fb6739754b5405127cee7637eba6781ba3eb99acc

    SHA512

    5911eb71203bfcf9ac0535c8e1da83c2934600c4bd3c06557b9273b95a1a242d12ac87ff3bc52a6860d690b0a6ff9869291a13b6bd36bdadebedf882c633db81

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    e21726c89589ce3bc0bcd6cd330650be

    SHA1

    0e768cc04ea67c82500a9bb8d3ba406b05292c95

    SHA256

    e5fa49f41e532f66e62d71faf86944f583ad73dcd4f2773b7ceec55ad90939f4

    SHA512

    5f5e5d0489b721ada4c51225a9a91749a1dc126491d6a86eca8274ae9cb33a1d67aecf6f68262dbb36b2a89946a6be670bd403abab5c7a494ae4844f60fc616a

  • memory/676-56-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/676-61-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/676-52-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1664-62-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1664-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1664-60-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1664-59-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1712-54-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1712-53-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1712-55-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1712-57-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2192-3-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2192-0-0x000000007489E000-0x000000007489F000-memory.dmp

    Filesize

    4KB

  • memory/2192-7-0x0000000005440000-0x0000000005500000-memory.dmp

    Filesize

    768KB

  • memory/2192-2-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-4-0x000000007489E000-0x000000007489F000-memory.dmp

    Filesize

    4KB

  • memory/2192-1-0x0000000000CE0000-0x0000000000DE8000-memory.dmp

    Filesize

    1.0MB

  • memory/2192-5-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-6-0x0000000000410000-0x0000000000420000-memory.dmp

    Filesize

    64KB

  • memory/2192-43-0x0000000074890000-0x0000000074F7E000-memory.dmp

    Filesize

    6.9MB

  • memory/2588-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-75-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2588-74-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2588-71-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2588-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2588-82-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2588-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB