Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15-11-2024 02:18

General

  • Target

    27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe

  • Size

    1004KB

  • MD5

    b55d24e6b8e053c08bdd57534af83734

  • SHA1

    13473f286428aa39869a9580c7f3fbb0fde8d9ed

  • SHA256

    27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b

  • SHA512

    1957bdfa97e1bd9309040f64d22c7348df0ca692f79a3136cb0203e19e5e4a67c5d8588e758f3e43a0652158a22042bd694635f0baaaa31c8d1c826432da8f22

  • SSDEEP

    24576:99CJVyR2dzExjVlDjcFXcq5meyUBNrllwKkwa9:9UO2dCzmeeT/sS

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

87.120.120.25:5940

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-13MD3U

  • 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

  • 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 3 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 7 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 5 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
    "C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QglnNavO.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2736
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QglnNavO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp140D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2848
    • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
      "C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe"
      2⤵
        PID:2804
      • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
        "C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
          C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe /stext "C:\Users\Admin\AppData\Local\Temp\aifpgtcpneohummpxulqs"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1272
        • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
          C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe /stext "C:\Users\Admin\AppData\Local\Temp\kdkhhlnrbmglxsabpxfrdirb"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:688
        • C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe
          C:\Users\Admin\AppData\Local\Temp\27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b.exe /stext "C:\Users\Admin\AppData\Local\Temp\mfxsieylpuyqhhwfyhstgnesuud"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2364

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      d400063e57e3640215b40de264cf2738

      SHA1

      3915640fd24bb0a2d98752498a6995f18ceaa792

      SHA256

      bd3e9fa2381afa1419081188e3987c7c95a990f5a86039f49e13d40e471d29c0

      SHA512

      3e7e19b2c00228af156353fff7823f81dfc4e4da8bc83a16ffd828e0e71d05af2268e6592b44ce523d41cb79f6b94dd65df0c5e43f291d8a270bdd7dd49cb8b0

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp140D.tmp

      Filesize

      1KB

      MD5

      4fe78cf39af19db983a1aec2ec22bc7d

      SHA1

      f6afcc8fa79ab8196db6998ea243a2c555a46f3f

      SHA256

      2c50636c7d44eb7b51f07554fa154c548ec0258d0418743cd5bf016d9a6b5147

      SHA512

      da3967c6d11ebbdffebf5480c173b678031b5405746eebec0463f1352f53b81c6a9640b0c5f4dc879a67eb213b47d09c3af86220a763bf4a7cd7a87fe1a6c27d

    • memory/688-46-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/688-45-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/688-43-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1272-47-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1272-41-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1272-44-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1736-5-0x0000000004EF0000-0x0000000004FB2000-memory.dmp

      Filesize

      776KB

    • memory/1736-4-0x0000000074A80000-0x000000007516E000-memory.dmp

      Filesize

      6.9MB

    • memory/1736-3-0x0000000000220000-0x0000000000232000-memory.dmp

      Filesize

      72KB

    • memory/1736-33-0x0000000074A80000-0x000000007516E000-memory.dmp

      Filesize

      6.9MB

    • memory/1736-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

      Filesize

      4KB

    • memory/1736-2-0x0000000074A80000-0x000000007516E000-memory.dmp

      Filesize

      6.9MB

    • memory/1736-1-0x0000000001330000-0x0000000001432000-memory.dmp

      Filesize

      1.0MB

    • memory/2364-49-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2364-50-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2364-51-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2616-32-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-28-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-35-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-36-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-37-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-39-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2616-13-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-15-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-19-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-21-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-23-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-27-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-34-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-31-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-26-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-58-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2616-62-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2616-61-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2616-63-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-17-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-69-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-68-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-76-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-77-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-85-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-84-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2616-92-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB