Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2024 03:46

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:2224
    • 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:2728
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2804
    • 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:524
      • 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:2608
        • 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:2420
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5D7B.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2352
        • 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:2028

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    8d92bf71d8ec7c562aa98912a64cc9f2

    SHA1

    231f14aa59023eb444393fc0c1ef41324fc940cb

    SHA256

    fc10c9ea61d715c2d0ed0b06283736c6f6a31e9bd9776281c2dc8d21767d3013

    SHA512

    36213888bc408463819d28bfc55509ddb16b1b03762215547ea42c95f242866cdad9685b6eae4587782eef952408d08eafa056c85f0fdfc79c23897e0e7b8ed0

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    1.1MB

    MD5

    7d78937ebc3648958437741df13eec52

    SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

    SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

    SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • C:\Users\Admin\AppData\Local\Temp\tmpED0.tmp

    Filesize

    1KB

    MD5

    9cc202108401862af5649d422ee9f33e

    SHA1

    b2af3aff94e34e6a3b3fe652e41fcc718f08959f

    SHA256

    22e9f3cb687581e2b8392df052be6d6f328a972f12c21a3b3313061c9b0ffa1e

    SHA512

    fe3b82fd73b1977b2215ad6f26d7ae5a230af492065f034c72a36dfbee372c2eec65770c331a99c234ad2279a6737bac30377669e18b91e20dcc6997ba73d43c

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

    Filesize

    7KB

    MD5

    43d41411fcede7158fa4e9f4ec567775

    SHA1

    fc232086a19e0c5e7cca021ae30141a34f47c9ff

    SHA256

    ebebc571d68447a0c329c4b5a8be576684df97b6050efc89288aff3f735ba098

    SHA512

    92df2825c46de3b2a2449a5a2cd1d5b44370c2f393f8181d2d1280b0a34acd216ace5976ea39a873ee941f8487f6014e7225752c41200e773e401cc17f12a185

  • memory/524-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/524-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-18-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/524-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-106-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2028-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2028-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2224-4-0x000000007422E000-0x000000007422F000-memory.dmp

    Filesize

    4KB

  • memory/2224-0-0x000000007422E000-0x000000007422F000-memory.dmp

    Filesize

    4KB

  • memory/2224-2-0x0000000074220000-0x000000007490E000-memory.dmp

    Filesize

    6.9MB

  • memory/2224-1-0x00000000012D0000-0x00000000013EC000-memory.dmp

    Filesize

    1.1MB

  • memory/2224-3-0x00000000006D0000-0x00000000006EC000-memory.dmp

    Filesize

    112KB

  • memory/2224-39-0x0000000074220000-0x000000007490E000-memory.dmp

    Filesize

    6.9MB

  • memory/2224-5-0x0000000074220000-0x000000007490E000-memory.dmp

    Filesize

    6.9MB

  • memory/2224-6-0x0000000005D50000-0x0000000005E14000-memory.dmp

    Filesize

    784KB

  • memory/2608-41-0x0000000000CB0000-0x0000000000DCC000-memory.dmp

    Filesize

    1.1MB