Analysis

  • max time kernel
    119s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2025 06:52

General

  • Target

    d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c.exe

  • Size

    1.1MB

  • MD5

    a5214c80f5c9addd11c0deb759fbca74

  • SHA1

    eaf20ee151ca884cf30bbe3ffa66fdc442b27177

  • SHA256

    d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c

  • SHA512

    53657957ea7150c2fa8882e08319b9d13d6225b798121c81936ab482cef46386b6f4cc0825cf14a0f720b98c9aed91d8244178ff9c6623d2355e5b43745602e4

  • SSDEEP

    24576:1u6J33O0c+JY5UZ+XC0kGso6FakCsU4yYhK3x9uZ3WY7:Xu0c++OCvkGs9Fak4BY7

Malware Config

Extracted

Family

remcos

Version

2.2.0 Pro

Botnet

RemoteHost

C2

185.217.1.142:3337

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-VBI2IL

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Modifies WinLogon 2 TTPs 3 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 12 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 3 IoCs

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

  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c.exe
    "C:\Users\Admin\AppData\Local\Temp\d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c.exe
      "C:\Users\Admin\AppData\Local\Temp\d2554d4225aff7609158eab385a7090073afc2e5853b2a20f8752aae7cd8d06c.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Adds Run key to start application
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2392
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2744
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2756
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {CA7EEBF4-035E-46AA-BDDD-99D476571D18} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
        "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies WinLogon
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2456
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2088
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2848
    • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2200
      • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
        "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies WinLogon
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2120
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2084
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\SysWOW64\schtasks.exe" /create /tn cttunesvr /tr "C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe" /sc minute /mo 1 /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    658B

    MD5

    7bdb5fb47ea04b2f321f7b69450e724f

    SHA1

    9d832f661dc703b5535453e2360d52ddf33f177e

    SHA256

    8bb2bd905f30fd8b572b78af8bc8fa3f505051c8d3cd4bb9cb361b7723e99dde

    SHA512

    d708e624e76a70accaf1938acaea4e8192c2bf18d76c395e5d5d70c251a2d5d50803402126aa7d07b0bf917cb1ba9ebaa8ea8ac7078e607cab50cf2ca20fa50b

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    564B

    MD5

    e221e7bd7e33aef4a5264f798818142e

    SHA1

    3545dbcc35de80c8f15da0daceab80acd0f1ae22

    SHA256

    f37e43a3504c163fa4a82bacc92ceb8cccd37d1020fbba95cc954f316ce49516

    SHA512

    04775d0fa21526bbbaa2deea13af1d5fab6183ea3a2809073539293da78e20f1cf4b9a4afdeafb1b4e8ce17a5be40f44364808ab73c174c98bce53ad8a1807d8

  • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe

    Filesize

    1.1MB

    MD5

    8afeed07ecc6bdd4b5c7dd4cb9f894a2

    SHA1

    796ad32addaeb17cef8f6b426363bb2c7dc52d53

    SHA256

    c0c9900801dcbe57616758adf63cb17eeede094a83cc3fe358582e3730a58205

    SHA512

    108fd78bac065a8a7f1c3b23b676d7183d8db89c03cc6d74703d6ec40c6052431d827d3410256ca5f7b83b4375c4e635518145248da7fb2e79a477752e6a8a1b

  • memory/2100-0-0x00000000000B0000-0x00000000000B1000-memory.dmp

    Filesize

    4KB

  • memory/2120-46-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2120-49-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2392-1-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2392-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2392-3-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2392-12-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2456-28-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2456-31-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB