Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe
    "C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3240
    • 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:1860
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB7.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2160
    • C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe
      "C:\Users\Admin\AppData\Local\Temp\ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1136
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • 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:2812
        • 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:2720
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp66E3.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3996
        • 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:4656

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    c84ff08b3c05723e8b6aec8673237650

    SHA1

    46970ceb496a7da67edeb6d42b144c15ba1017af

    SHA256

    1273fbeb2cf612ce95cfa6a1f0bbe60c2a13c959281b672f8fdfcdb2510b04aa

    SHA512

    108867b13a61cf170981dc7f541954543b25ea4a490281e30a15f4aaecdc407c96050fecc3f10e9680cc0d41f8ded969df91ee192c88b0327ceb867a8131b245

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    1.1MB

    MD5

    7d78937ebc3648958437741df13eec52

    SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

    SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

    SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    26571ffe1aea1b26df784738eecfd3bf

    SHA1

    89fccbc837a881ae507fe101472e2142efda9817

    SHA256

    355651840209c9acdbc89abaa98971e37c4122977020813ca69df7bcd96230b2

    SHA512

    bf115bc37ba7cb19d535223ed547ec032fe6c04ab367547705b35d4ce22035c789a14409524eff7d1aa30ac777e9fdb6af005e3960eb58dde6d5235e6b94c955

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hvdfg5x3.3c4.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpDB7.tmp

    Filesize

    1KB

    MD5

    3f3b10cb5245bb8109feb102e9bafbb1

    SHA1

    a7e3cbd17b5bef4453ef5470eff830d715288a32

    SHA256

    549d11b5c2bf0bda4c903a6941b18d5aa588d595c3fab86e49e0ddc7145b21d7

    SHA512

    2b974a52f57e76e4198f4a21a8502a0b9244e122705824d10e0d885c26271b6b80e33e8dbc1a8e2419ddadf5876a61987a33fe3546d3b07df0627708391bd455

  • memory/1136-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1136-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1136-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1136-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1136-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1860-19-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/1860-40-0x0000000006790000-0x00000000067AE000-memory.dmp

    Filesize

    120KB

  • memory/1860-17-0x00000000058D0000-0x0000000005EF8000-memory.dmp

    Filesize

    6.2MB

  • memory/1860-18-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/1860-73-0x0000000007D20000-0x0000000007D34000-memory.dmp

    Filesize

    80KB

  • memory/1860-21-0x0000000005810000-0x0000000005832000-memory.dmp

    Filesize

    136KB

  • memory/1860-15-0x0000000005200000-0x0000000005236000-memory.dmp

    Filesize

    216KB

  • memory/1860-22-0x00000000060F0000-0x0000000006156000-memory.dmp

    Filesize

    408KB

  • memory/1860-23-0x0000000006160000-0x00000000061C6000-memory.dmp

    Filesize

    408KB

  • memory/1860-72-0x0000000007D10000-0x0000000007D1E000-memory.dmp

    Filesize

    56KB

  • memory/1860-71-0x0000000007CE0000-0x0000000007CF1000-memory.dmp

    Filesize

    68KB

  • memory/1860-70-0x0000000007D60000-0x0000000007DF6000-memory.dmp

    Filesize

    600KB

  • memory/1860-16-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/1860-39-0x00000000061D0000-0x0000000006524000-memory.dmp

    Filesize

    3.3MB

  • memory/1860-69-0x0000000007B50000-0x0000000007B5A000-memory.dmp

    Filesize

    40KB

  • memory/1860-74-0x0000000007E20000-0x0000000007E3A000-memory.dmp

    Filesize

    104KB

  • memory/1860-41-0x00000000067E0000-0x000000000682C000-memory.dmp

    Filesize

    304KB

  • memory/1860-68-0x0000000007AE0000-0x0000000007AFA000-memory.dmp

    Filesize

    104KB

  • memory/1860-78-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/1860-75-0x0000000007E00000-0x0000000007E08000-memory.dmp

    Filesize

    32KB

  • memory/1860-55-0x000000006F050000-0x000000006F09C000-memory.dmp

    Filesize

    304KB

  • memory/1860-54-0x0000000007740000-0x0000000007772000-memory.dmp

    Filesize

    200KB

  • memory/1860-65-0x0000000007980000-0x000000000799E000-memory.dmp

    Filesize

    120KB

  • memory/1860-66-0x00000000079A0000-0x0000000007A43000-memory.dmp

    Filesize

    652KB

  • memory/1860-67-0x0000000008120000-0x000000000879A000-memory.dmp

    Filesize

    6.5MB

  • memory/2720-101-0x0000000005C00000-0x0000000005F54000-memory.dmp

    Filesize

    3.3MB

  • memory/2720-104-0x00000000061A0000-0x00000000061EC000-memory.dmp

    Filesize

    304KB

  • memory/2720-105-0x0000000070F00000-0x0000000070F4C000-memory.dmp

    Filesize

    304KB

  • memory/2720-115-0x0000000007090000-0x0000000007133000-memory.dmp

    Filesize

    652KB

  • memory/2720-116-0x0000000007670000-0x0000000007681000-memory.dmp

    Filesize

    68KB

  • memory/2720-117-0x00000000076C0000-0x00000000076D4000-memory.dmp

    Filesize

    80KB

  • memory/3240-7-0x000000007466E000-0x000000007466F000-memory.dmp

    Filesize

    4KB

  • memory/3240-1-0x0000000000130000-0x000000000024C000-memory.dmp

    Filesize

    1.1MB

  • memory/3240-5-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/3240-3-0x0000000004C50000-0x0000000004CE2000-memory.dmp

    Filesize

    584KB

  • memory/3240-4-0x0000000004DE0000-0x0000000004DEA000-memory.dmp

    Filesize

    40KB

  • memory/3240-0-0x000000007466E000-0x000000007466F000-memory.dmp

    Filesize

    4KB

  • memory/3240-10-0x000000000A140000-0x000000000A1DC000-memory.dmp

    Filesize

    624KB

  • memory/3240-9-0x0000000007A20000-0x0000000007AE4000-memory.dmp

    Filesize

    784KB

  • memory/3240-42-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/3240-2-0x0000000005200000-0x00000000057A4000-memory.dmp

    Filesize

    5.6MB

  • memory/3240-6-0x0000000004EE0000-0x0000000004EFC000-memory.dmp

    Filesize

    112KB

  • memory/3240-8-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/4656-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-129-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4656-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB