Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2024 03:54

General

  • Target

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.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
  • 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 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe
    "C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2352
    • 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:2324
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE678.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2768
    • C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe
      "C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2684
      • 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:2636
        • 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:236
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp363D.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1568
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    a285f90a22ce26f4d1c1d9eedd754f08

    SHA1

    9c7c0c20d36f309c2e0c56d3b64abdae3256a0d2

    SHA256

    17a97d9610ffb05a0558bd0830d6e2d3b625a06d0b0bbc2bd2bff0076d00a729

    SHA512

    40edb165cf221d84d2b35ed86396d35afe54085465f5ed4dbd71e78643eda47e63a0b59d58bea06682d9545cf3eba8a16612bb5dbf74bdea3cb5869d86b9c2f5

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    1.1MB

    MD5

    7d78937ebc3648958437741df13eec52

    SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

    SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

    SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • C:\Users\Admin\AppData\Local\Temp\tmpE678.tmp

    Filesize

    1KB

    MD5

    7c26226d8714ef3f31a6bff20aa4e6fd

    SHA1

    d1202185d582c06a959beb36ab390baf98289902

    SHA256

    ae25a30381efd7f8e2d5299bc30425d9ccf95dd4f991267b0fd93786b6ff173c

    SHA512

    eb127fa6025a8feea3fc43bdd9653a7fa7959ee2e905018544ad1e7668764a8a372c446bcfff488876bac5ea7942b44a91579cd9ec2c9b43aaa5d93051344352

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

    Filesize

    7KB

    MD5

    1763dc5c1c14d64ef4eaeb1b48683deb

    SHA1

    d29d01a7c54f7663a06bd546cf25978c302ee613

    SHA256

    4786f8cd3c4bce71d413cf327f24ae563a1c6277be3e10495a33d153eb949aa2

    SHA512

    fc80547d9205da1f9644ddfc2ef98706715e3e97ceb8c8e96fb292e17abbc92c8cbf50de4c627a3ed476ae81b2c59f6933e88c8f8562275edc8628b3f9a83f6c

  • memory/1876-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1876-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-106-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1876-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2352-3-0x0000000000300000-0x000000000031C000-memory.dmp

    Filesize

    112KB

  • memory/2352-5-0x0000000073FF0000-0x00000000746DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2352-0-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

    Filesize

    4KB

  • memory/2352-4-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

    Filesize

    4KB

  • memory/2352-33-0x0000000073FF0000-0x00000000746DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2352-2-0x0000000073FF0000-0x00000000746DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2352-1-0x0000000000890000-0x00000000009AC000-memory.dmp

    Filesize

    1.1MB

  • memory/2352-6-0x0000000005E70000-0x0000000005F34000-memory.dmp

    Filesize

    784KB

  • memory/2636-41-0x0000000000F60000-0x000000000107C000-memory.dmp

    Filesize

    1.1MB

  • memory/2684-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-18-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2684-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2684-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB