Analysis

  • max time kernel
    95s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/08/2024, 02:12

General

  • Target

    af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65.exe

  • Size

    894KB

  • MD5

    fdcba835523e6646b078e2c3ef177867

  • SHA1

    de1f28b968ea95b105b6f760e02a59f8276e436f

  • SHA256

    af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65

  • SHA512

    719cde4fc47c50337c2dae7e474c024acdf4ff686fce08c7d4521dcd47a3535d7172cdca32c923f90c6209d63902ce920b068f850e2d88553b27c749efcb098f

  • SSDEEP

    24576:iAak5W2QSl8DnIvraQeeISIPc2/jpXucCv:X5W2QSAIWjeISGC

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

eadzagba1.duckdns.org:4877

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-3DF634

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • 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 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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 7 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65.exe
    "C:\Users\Admin\AppData\Local\Temp\af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4708
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EaTzOjH.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4968
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EaTzOjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFE0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2804
    • C:\Users\Admin\AppData\Local\Temp\af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65.exe
      "C:\Users\Admin\AppData\Local\Temp\af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3176
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2560
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EaTzOjH.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4400
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EaTzOjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB7.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:464
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:4496
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:408
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:2376
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:2764
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:4232

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          894KB

          MD5

          fdcba835523e6646b078e2c3ef177867

          SHA1

          de1f28b968ea95b105b6f760e02a59f8276e436f

          SHA256

          af013d9096edd166f1cdd1bd1d2fdd944982876a6d263965929f3a8f30c8ef65

          SHA512

          719cde4fc47c50337c2dae7e474c024acdf4ff686fce08c7d4521dcd47a3535d7172cdca32c923f90c6209d63902ce920b068f850e2d88553b27c749efcb098f

        • 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

          48c1e56244c7b728023032fd41155bfc

          SHA1

          b82db8986c781e88afa568d290648f5b3b7a7a87

          SHA256

          3113d3a273cdf2cb3725697e01b2c71be6af48c4c9c9400c93819008b6f66aba

          SHA512

          7d344b78b19128c0f1594d8311e9121710e19d2b762be9211a6a6683a85bfa49557c60f6933f62a26113a9a2bea0fa143ace3e169a4f623559508308bd0934f0

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4zof14al.jbi.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpDFE0.tmp

          Filesize

          1KB

          MD5

          db6e071d67e3cc01bf6355fe81662815

          SHA1

          1173dfb4c2efd592ae77acd962264c6ea46dd576

          SHA256

          2c0d86ec75c3e6296ad2f6f114ee9dbfcb646e751596f188c881f23499f09a95

          SHA512

          385a5bebacd0a2ac113b9894ae33e2a67c8e178f934e1fb8546045357e1fa59d7fdf6f9eee66957b3b4a54a3ea728740f6b285ade38a61114ad013a8aa3719ad

        • memory/2560-79-0x0000000006E30000-0x0000000006E46000-memory.dmp

          Filesize

          88KB

        • memory/3176-50-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3176-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3176-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3176-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3176-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/4400-113-0x00000000074D0000-0x00000000074E4000-memory.dmp

          Filesize

          80KB

        • memory/4400-98-0x0000000005890000-0x0000000005BE4000-memory.dmp

          Filesize

          3.3MB

        • memory/4400-100-0x00000000064B0000-0x00000000064FC000-memory.dmp

          Filesize

          304KB

        • memory/4400-101-0x00000000756D0000-0x000000007571C000-memory.dmp

          Filesize

          304KB

        • memory/4400-111-0x0000000007120000-0x00000000071C3000-memory.dmp

          Filesize

          652KB

        • memory/4400-112-0x0000000007480000-0x0000000007491000-memory.dmp

          Filesize

          68KB

        • memory/4708-3-0x0000000005140000-0x00000000051D2000-memory.dmp

          Filesize

          584KB

        • memory/4708-27-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4708-10-0x000000000BC70000-0x000000000BD0C000-memory.dmp

          Filesize

          624KB

        • memory/4708-9-0x0000000008B10000-0x0000000008BD0000-memory.dmp

          Filesize

          768KB

        • memory/4708-8-0x0000000005640000-0x0000000005656000-memory.dmp

          Filesize

          88KB

        • memory/4708-7-0x0000000005470000-0x000000000547E000-memory.dmp

          Filesize

          56KB

        • memory/4708-6-0x0000000006770000-0x0000000006788000-memory.dmp

          Filesize

          96KB

        • memory/4708-5-0x0000000005110000-0x000000000511A000-memory.dmp

          Filesize

          40KB

        • memory/4708-4-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4708-2-0x0000000005650000-0x0000000005BF4000-memory.dmp

          Filesize

          5.6MB

        • memory/4708-1-0x0000000000620000-0x0000000000706000-memory.dmp

          Filesize

          920KB

        • memory/4708-0-0x0000000074E7E000-0x0000000074E7F000-memory.dmp

          Filesize

          4KB

        • memory/4968-29-0x0000000005600000-0x0000000005666000-memory.dmp

          Filesize

          408KB

        • memory/4968-53-0x00000000064B0000-0x00000000064FC000-memory.dmp

          Filesize

          304KB

        • memory/4968-54-0x00000000073D0000-0x0000000007402000-memory.dmp

          Filesize

          200KB

        • memory/4968-65-0x00000000073B0000-0x00000000073CE000-memory.dmp

          Filesize

          120KB

        • memory/4968-66-0x0000000007610000-0x00000000076B3000-memory.dmp

          Filesize

          652KB

        • memory/4968-55-0x0000000070D20000-0x0000000070D6C000-memory.dmp

          Filesize

          304KB

        • memory/4968-68-0x0000000007750000-0x000000000776A000-memory.dmp

          Filesize

          104KB

        • memory/4968-67-0x0000000007D90000-0x000000000840A000-memory.dmp

          Filesize

          6.5MB

        • memory/4968-69-0x00000000077C0000-0x00000000077CA000-memory.dmp

          Filesize

          40KB

        • memory/4968-70-0x00000000079D0000-0x0000000007A66000-memory.dmp

          Filesize

          600KB

        • memory/4968-71-0x0000000007950000-0x0000000007961000-memory.dmp

          Filesize

          68KB

        • memory/4968-72-0x0000000007990000-0x000000000799E000-memory.dmp

          Filesize

          56KB

        • memory/4968-73-0x00000000079A0000-0x00000000079B4000-memory.dmp

          Filesize

          80KB

        • memory/4968-74-0x0000000007A90000-0x0000000007AAA000-memory.dmp

          Filesize

          104KB

        • memory/4968-75-0x0000000007A70000-0x0000000007A78000-memory.dmp

          Filesize

          32KB

        • memory/4968-78-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4968-51-0x0000000006400000-0x000000000641E000-memory.dmp

          Filesize

          120KB

        • memory/4968-47-0x0000000005F60000-0x00000000062B4000-memory.dmp

          Filesize

          3.3MB

        • memory/4968-35-0x0000000005DF0000-0x0000000005E56000-memory.dmp

          Filesize

          408KB

        • memory/4968-28-0x0000000005560000-0x0000000005582000-memory.dmp

          Filesize

          136KB

        • memory/4968-21-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4968-19-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4968-17-0x0000000074E70000-0x0000000075620000-memory.dmp

          Filesize

          7.7MB

        • memory/4968-18-0x0000000005750000-0x0000000005D78000-memory.dmp

          Filesize

          6.2MB

        • memory/4968-15-0x0000000002B00000-0x0000000002B36000-memory.dmp

          Filesize

          216KB