Analysis

  • max time kernel
    147s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2024 11:43

General

  • Target

    RFQ-00948-STELLION-878378.exe

  • Size

    1.1MB

  • MD5

    7d78937ebc3648958437741df13eec52

  • SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

  • SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

  • SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • SSDEEP

    24576:PYoOciJwQYaoRuivChV3DSwctuoqBMY9zVZEueHTf:PsbwQIRssqBMWVZEu

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • 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 2 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 1 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 11 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2492
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp318C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2744
    • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
      2⤵
        PID:2760
      • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
        "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
        2⤵
        • Loads dropped DLL
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2640
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2004
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2356
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp849B.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1496
          • C:\ProgramData\Remcos\remcos.exe
            "C:\ProgramData\Remcos\remcos.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 SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1952
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\lnqnhqdeotwzqtinxqgwnqhbhuwedcc"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:2160
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\nidgijogcboeazezgbspydbsqigfwntfhz"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:696
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\ykiyjb"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:1348

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\Remcos\logs.dat

      Filesize

      144B

      MD5

      a1abf71181c9185bd52b74db10c0edfb

      SHA1

      1d52f3569cd397ea9b54765e109d2116812176e9

      SHA256

      8afe3e90f527301b329217f176fdaf22d421ede7dee3c66d2e2c6cf246d0e25c

      SHA512

      83d7470b6b7fe5a8de36df899a72b1de3088491578866ddaa1e54b489e62d0561e57ee1c219c0376e35c546bfca5a8141a3a4c8cbde486887a7fc7de92bd9012

    • C:\ProgramData\Remcos\remcos.exe

      Filesize

      1.1MB

      MD5

      7d78937ebc3648958437741df13eec52

      SHA1

      9b30169d5adb06c082d6b9e297368faad45725f5

      SHA256

      ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

      SHA512

      7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp318C.tmp

      Filesize

      1KB

      MD5

      bc09ed4e51514be3ccb0a37724cb73fd

      SHA1

      5e35ac6e12f6ca5e280e8efe0dc40b00b4e964bc

      SHA256

      d6a05ac79b29151cf618e42aabc0f5eafee9de89e5de9db4f923f100cee4c64a

      SHA512

      ed2e757e623c71e9010db40f2865b0cdaa09a946c7773f56fc91ada9f310059aefecdb9e381b7890ff40c6b0f2d80f467c5133cd2980ba4efec9b085cf88f81b

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

      Filesize

      7KB

      MD5

      ef16094f073b4c4c01010d6fa61a2376

      SHA1

      7aba332dcf4bb9da33cd1ec18f83406755252872

      SHA256

      5249d90e7ecddcb392ad8e07f92d7b16e1f203e3aceb7a8ef64e104d53f2bc07

      SHA512

      5affafbd3eb657dc0d5f2bd55b3e6e3e0207a6a7487378495c325f95d5228c896d36f291c70ba411864b5f81d72becad1ca765a04dfb278557db981e655afbed

    • memory/696-87-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/696-93-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/696-88-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/696-91-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1348-97-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1348-98-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1348-95-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1952-70-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-69-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-105-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1952-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-81-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-79-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-76-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-64-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1952-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1952-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2004-41-0x0000000000BD0000-0x0000000000CEC000-memory.dmp

      Filesize

      1.1MB

    • memory/2084-5-0x0000000074C50000-0x000000007533E000-memory.dmp

      Filesize

      6.9MB

    • memory/2084-1-0x0000000001390000-0x00000000014AC000-memory.dmp

      Filesize

      1.1MB

    • memory/2084-6-0x0000000005D70000-0x0000000005E34000-memory.dmp

      Filesize

      784KB

    • memory/2084-2-0x0000000074C50000-0x000000007533E000-memory.dmp

      Filesize

      6.9MB

    • memory/2084-34-0x0000000074C50000-0x000000007533E000-memory.dmp

      Filesize

      6.9MB

    • memory/2084-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

      Filesize

      4KB

    • memory/2084-3-0x00000000004A0000-0x00000000004BC000-memory.dmp

      Filesize

      112KB

    • memory/2084-4-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

      Filesize

      4KB

    • memory/2160-85-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2160-92-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2160-90-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2160-84-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2640-20-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-16-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2640-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-18-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-27-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB