Overview

overview

10

Static

static

10

WaveSource...er.exe

windows7-x64

10

WaveSource...er.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    103s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 19:40

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General

  • Target

    WaveSourceInstaller.exe

  • Size

    469KB

  • MD5

    e468b718e67495ea73c85d8258059adf

  • SHA1

    dcad70f5c39ab85f900ef1288067dbf51eaeb503

  • SHA256

    fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

  • SHA512

    b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSJn9:uiLJbpI7I2WhQqZ7J9

Score
10/10
remcoswavesourceleakeddiscoverypersistencerat

Malware Config

Extracted

Family

remcos

Botnet

WaveSourceLeaked

C2

204.10.194.175:4444

Attributes
  • audio_folder

    MicRecords

  • 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-46FS9Q

  • 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

  • Remcos

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

    ratremcos
  • Remcos family
    remcos
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 12 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WaveSourceInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\WaveSourceInstaller.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4740
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2624
        • 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: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4456
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
              PID:2276
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1052
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2764
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious use of AdjustPrivilegeToken
        PID:4716
      • C:\Windows\system32\msinfo32.exe
        "C:\Windows\system32\msinfo32.exe" "C:\Users\Admin\Desktop\SuspendTest.nfo"
        1⤵
        • Checks SCSI registry key(s)
        • Enumerates system info in registry
        • Suspicious behavior: GetForegroundWindowSpam
        PID:4236

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\Remcos\remcos.exe
        Filesize

        469KB

        MD5

        e468b718e67495ea73c85d8258059adf

        SHA1

        dcad70f5c39ab85f900ef1288067dbf51eaeb503

        SHA256

        fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

        SHA512

        b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

        Download Submit

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.idx
        Filesize

        64KB

        MD5

        d2fb266b97caff2086bf0fa74eddb6b2

        SHA1

        2f0061ce9c51b5b4fbab76b37fc6a540be7f805d

        SHA256

        b09f68b61d9ff5a7c7c8b10eee9447d4813ee0e866346e629e788cd4adecb66a

        SHA512

        c3ba95a538c1d266beb83334af755c34ce642a4178ab0f2e5f7822fd6821d3b68862a8b58f167a9294e6d913b08c1054a69b5d7aec2efdb3cf9796ed84de21a8

        Download Submit

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock
        Filesize

        4B

        MD5

        f49655f856acb8884cc0ace29216f511

        SHA1

        cb0f1f87ec0455ec349aaa950c600475ac7b7b6b

        SHA256

        7852fce59c67ddf1d6b8b997eaa1adfac004a9f3a91c37295de9223674011fba

        SHA512

        599e93d25b174524495ed29653052b3590133096404873318f05fd68f4c9a5c9a3b30574551141fbb73d7329d6be342699a17f3ae84554bab784776dfda2d5f8

        Download Submit

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.val
        Filesize

        944B

        MD5

        6bd369f7c74a28194c991ed1404da30f

        SHA1

        0f8e3f8ab822c9374409fe399b6bfe5d68cbd643

        SHA256

        878947d0ec814fe7c343cdebc05eebf00eb14f3023bdb3809a559e17f399fe5d

        SHA512

        8fc5f073dc9fa1e1ae47c60a5f06e0a48709fd6a4302dffaa721858409e7bde64bc6856d3fb28891090516d1a7afc542579de287778b5755eafe75cc67d45d93

        Download Submit

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

        386B

        MD5

        1ec6289c6fd4c2ded6b2836ed28cbeb5

        SHA1

        c4e08195e6c640eb8860acc03fda1d649b4fe070

        SHA256

        6efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2

        SHA512

        20bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288

        Download Submit

      • memory/1052-18-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-21-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-14-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-13-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-24-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-23-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-22-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-12-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-20-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1052-19-0x000001FEF39B0000-0x000001FEF39B1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/2276-11-0x0000000001340000-0x00000000013BF000-memory.dmp

        Filesize

        508KB

        Download

      • memory/2276-25-0x0000000001340000-0x00000000013BF000-memory.dmp

        Filesize

        508KB

        Download

      • memory/2276-10-0x0000000001340000-0x00000000013BF000-memory.dmp

        Filesize

        508KB

        Download

      • memory/2276-9-0x0000000001340000-0x00000000013BF000-memory.dmp

        Filesize

        508KB

        Download

      • memory/2276-8-0x0000000001340000-0x00000000013BF000-memory.dmp

        Filesize

        508KB

        Download