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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/01/2025, 01:30

General

  • Target

    cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d.exe

  • Size

    1.1MB

  • MD5

    e1d77466b9d956f98108b8d54b01d4c8

  • SHA1

    a27b1977e39e05e762918db8065ce14473831ed0

  • SHA256

    cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d

  • SHA512

    25cf3201450fc3a567267fe48d2b0cdc43682b18f977d9c1bf2bd4ccfab5ad481224f91d72d764824b27117f8ec2231580dfbf305e0009856c49b23e9008192a

  • SSDEEP

    24576:1u6J33O0c+JY5UZ+XC0kGso6FakCsU4yYhK3x9uZ3WYr:Xu0c++OCvkGs9Fak4BYr

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
  • Loads dropped DLL 1 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\cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d.exe
    "C:\Users\Admin\AppData\Local\Temp\cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2132
    • C:\Users\Admin\AppData\Local\Temp\cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d.exe
      "C:\Users\Admin\AppData\Local\Temp\cfad180a76b4acfb7d6a3ee4173d3345a263941d214505e4ae71adcd9b99732d.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:2740
      • 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:2696
    • 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:2536
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {EA8729FF-7092-4AF8-8190-159E9C418522} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      C:\Users\Admin\AppData\Roaming\adprovider\Dxpserver.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2828
      • 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:2096
        • 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:800
      • 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:1640
    • 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:2180
      • 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:3024
        • 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:1788
      • 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:2288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    658B

    MD5

    47484d86434e4e80803e351b8bf9589e

    SHA1

    ba1b827b23a92f73a20a6cb83de13bfc1c962c45

    SHA256

    c3166eec72116fb3648cf231e994507766694cc8baa688a31191330f53863a02

    SHA512

    4c113f8bc6ccf11feee4d7fd2a9fab359db89417f4768ea7e34166910ff6a5df1874749ffac033a62995776cfed3da9b82d9347a2ea25568ab9b245a9e5e880b

  • 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

    5cdfdc23acd8d81876da2e96db92de55

    SHA1

    7fa80c5a231f50ce72f6e08586b4dc421bc126a2

    SHA256

    bb8c0447ab6d4bcb6ca1c0ab048cec12973cc221ba622f5e42a94ee8ead172bb

    SHA512

    6b578093c51680c5ab1e7065d2b91a59e050b5fb32f6b7a8da738c8bd6ce0959ca97862b289ed91c6895c14da80be212e446090482e1ae9d7268775d671e314f

  • memory/2096-24-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2096-29-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2096-32-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2132-0-0x00000000002C0000-0x00000000002C1000-memory.dmp

    Filesize

    4KB

  • memory/2740-12-0x00000000001A0000-0x00000000001C0000-memory.dmp

    Filesize

    128KB

  • memory/2740-1-0x00000000001A0000-0x00000000001C0000-memory.dmp

    Filesize

    128KB

  • memory/2740-3-0x00000000001A0000-0x00000000001C0000-memory.dmp

    Filesize

    128KB

  • memory/2740-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/3024-47-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/3024-42-0x00000000004C0000-0x00000000004E0000-memory.dmp

    Filesize

    128KB

  • memory/3024-50-0x00000000004C0000-0x00000000004E0000-memory.dmp

    Filesize

    128KB