Analysis

  • max time kernel
    149s
  • max time network
    145s
  • 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 03:54

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:3136
    • 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:1312
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3572
    • 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:4540
      • 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:1308
        • 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:1652
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5EA5.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:232
        • 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:4680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    c7305e0571ca0579b3bb56fe7438ebd7

    SHA1

    22592a0c0af87de5f4562df0dab1e89a2534d336

    SHA256

    e06099a3aee61d6d1a143a479fb96168418f827a435526ec0889379ba3282f94

    SHA512

    28fa2c795717a92f605dea16c239bb79e28f3d51cebed41de299ff559e0fd0f93c4315e98ce9c7d2e573fd241d3d1a60bf910a3d4434120504a4d8307453f381

  • 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

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    b70062882d02ef340d1c4d1a341f33d2

    SHA1

    0fa2b93c95acafa60ee2eb389eb489b9d4fdf96d

    SHA256

    18e4c455f2195a6bb839d93128cc1e6fe103d6a68def23e101a83329896c0e91

    SHA512

    38bfebb86640e3ebb8c1c7c1a8428efae87197419311efd8c4677e7f578664bdd778ad3bd3ee359b08cf0c7e3b18f07c4a6954a65583eaea090811e2ed68e8e1

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s2pdqule.d0s.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp6A2.tmp

    Filesize

    1KB

    MD5

    3f3b10cb5245bb8109feb102e9bafbb1

    SHA1

    a7e3cbd17b5bef4453ef5470eff830d715288a32

    SHA256

    549d11b5c2bf0bda4c903a6941b18d5aa588d595c3fab86e49e0ddc7145b21d7

    SHA512

    2b974a52f57e76e4198f4a21a8502a0b9244e122705824d10e0d885c26271b6b80e33e8dbc1a8e2419ddadf5876a61987a33fe3546d3b07df0627708391bd455

  • memory/1312-54-0x0000000007360000-0x0000000007392000-memory.dmp

    Filesize

    200KB

  • memory/1312-24-0x00000000053D0000-0x00000000053F2000-memory.dmp

    Filesize

    136KB

  • memory/1312-70-0x0000000007930000-0x00000000079C6000-memory.dmp

    Filesize

    600KB

  • memory/1312-71-0x00000000078B0000-0x00000000078C1000-memory.dmp

    Filesize

    68KB

  • memory/1312-66-0x00000000075A0000-0x0000000007643000-memory.dmp

    Filesize

    652KB

  • memory/1312-15-0x0000000004DD0000-0x0000000004E06000-memory.dmp

    Filesize

    216KB

  • memory/1312-67-0x0000000007CF0000-0x000000000836A000-memory.dmp

    Filesize

    6.5MB

  • memory/1312-17-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/1312-18-0x0000000005600000-0x0000000005C28000-memory.dmp

    Filesize

    6.2MB

  • memory/1312-19-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/1312-20-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/1312-65-0x0000000006950000-0x000000000696E000-memory.dmp

    Filesize

    120KB

  • memory/1312-55-0x00000000755F0000-0x000000007563C000-memory.dmp

    Filesize

    304KB

  • memory/1312-26-0x0000000005470000-0x00000000054D6000-memory.dmp

    Filesize

    408KB

  • memory/1312-72-0x00000000078E0000-0x00000000078EE000-memory.dmp

    Filesize

    56KB

  • memory/1312-69-0x0000000007720000-0x000000000772A000-memory.dmp

    Filesize

    40KB

  • memory/1312-78-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/1312-40-0x0000000005E30000-0x0000000006184000-memory.dmp

    Filesize

    3.3MB

  • memory/1312-75-0x00000000079D0000-0x00000000079D8000-memory.dmp

    Filesize

    32KB

  • memory/1312-68-0x00000000076B0000-0x00000000076CA000-memory.dmp

    Filesize

    104KB

  • memory/1312-27-0x0000000005550000-0x00000000055B6000-memory.dmp

    Filesize

    408KB

  • memory/1312-41-0x0000000006350000-0x000000000636E000-memory.dmp

    Filesize

    120KB

  • memory/1312-42-0x0000000006410000-0x000000000645C000-memory.dmp

    Filesize

    304KB

  • memory/1312-74-0x00000000079F0000-0x0000000007A0A000-memory.dmp

    Filesize

    104KB

  • memory/1312-73-0x00000000078F0000-0x0000000007904000-memory.dmp

    Filesize

    80KB

  • memory/1652-102-0x0000000006560000-0x00000000068B4000-memory.dmp

    Filesize

    3.3MB

  • memory/1652-104-0x0000000006A40000-0x0000000006A8C000-memory.dmp

    Filesize

    304KB

  • memory/1652-105-0x0000000071540000-0x000000007158C000-memory.dmp

    Filesize

    304KB

  • memory/1652-115-0x0000000007B90000-0x0000000007C33000-memory.dmp

    Filesize

    652KB

  • memory/1652-116-0x0000000007EC0000-0x0000000007ED1000-memory.dmp

    Filesize

    68KB

  • memory/1652-117-0x0000000007F10000-0x0000000007F24000-memory.dmp

    Filesize

    80KB

  • memory/3136-6-0x0000000005610000-0x000000000562C000-memory.dmp

    Filesize

    112KB

  • memory/3136-5-0x0000000005300000-0x000000000530A000-memory.dmp

    Filesize

    40KB

  • memory/3136-7-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

    Filesize

    4KB

  • memory/3136-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

    Filesize

    4KB

  • memory/3136-1-0x0000000000650000-0x000000000076C000-memory.dmp

    Filesize

    1.1MB

  • memory/3136-4-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/3136-8-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/3136-39-0x0000000074D80000-0x0000000075530000-memory.dmp

    Filesize

    7.7MB

  • memory/3136-3-0x0000000005170000-0x0000000005202000-memory.dmp

    Filesize

    584KB

  • memory/3136-9-0x0000000007F10000-0x0000000007FD4000-memory.dmp

    Filesize

    784KB

  • memory/3136-10-0x000000000A630000-0x000000000A6CC000-memory.dmp

    Filesize

    624KB

  • memory/3136-2-0x0000000005680000-0x0000000005C24000-memory.dmp

    Filesize

    5.6MB

  • memory/4540-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-130-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-123-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4680-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB