Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 02:19

General

  • Target

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe

  • Size

    1.0MB

  • MD5

    6aa8b2797c962a2bfbed78a30afa3f4a

  • SHA1

    1c76e253db167d7c6a685282973c1bc80bbe8e5e

  • SHA256

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f

  • SHA512

    ce9ba1c1282e0d87665bbe27749106de3c42ee7b2bc9e741586ad643129c01f2c7421d1afc98b599568c4fd1e229fcf08d19503426b6507db6f45e222903b145

  • SSDEEP

    24576:0HH6h1OoaYANm0loL58KwewFARcqlE3r9HMQKw:k8t0loL58KwLgQ7lMQKw

Malware Config

Extracted

Family

remcos

Botnet

Aug 19.2

C2

method8888.ddns.net:6902

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-U6KI2M

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 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 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
    "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.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:1036
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4532
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GIxoePCFR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4560
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GIxoePCFR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A76.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3724
    • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
      "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
        PID:2644
      • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
        "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
          C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\mgeqzslcwzjvzxjbbbjqsxuqsacnkere"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4556
        • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
          C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wikj"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:4468
        • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
          C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\gdxtadh"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3376

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      c86264dec4c9a83c92fe422c23b32a53

      SHA1

      ce15278bf1ac0f96c9a878ba5b38df2ea49ee690

      SHA256

      0f50c971e54fced1084d952c4404bbe41602efd8d29c0c3a799bc53231836fd3

      SHA512

      c59473d56442b4ff12a75eaab9275b32206648258483ef216714024b065ede7592ef3cae70eea27279dbf1cb9e38c0938c36ae05b70f18c3403370ab34e401e5

    • 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

      13fe7a8176888401181643323dbc6897

      SHA1

      9363b1ad82e39a2e177e0f606759d35fa786209f

      SHA256

      2f51fe82de0bc2faa8cdd0b0722a74e6d2479d2039297948d41cf04bd9ce6bb5

      SHA512

      672d3a4d62e48479c5db95ec8e79cb9e457c880374d312e2135ee2b77e7b907d11fa58518500add102db26520c0a16c6d06080c2e709c4629edb4ef0af49f30b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0ab5qvgm.aax.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\mgeqzslcwzjvzxjbbbjqsxuqsacnkere

      Filesize

      4KB

      MD5

      1891919175c888ce82e9bd8a047b01ad

      SHA1

      502a6892a5d27ecb791ac5aa6d8586944f540453

      SHA256

      a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

      SHA512

      8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

    • C:\Users\Admin\AppData\Local\Temp\tmp2A76.tmp

      Filesize

      1KB

      MD5

      e732100b91344f33fc445f0fcd4a8cc5

      SHA1

      c2a550d489deba373b7398ee613c3f8e90b5a423

      SHA256

      4e7f4869d81fc08963ff0eea16bf51307e962e89dda707ec72608e1a5dc6f65f

      SHA512

      191ae43b3d7650ebc6af92c7a0384a4971aef1133d46028e340fa0e454e07cdcd09b2c7dee3ee1081c835261f3942f6af88cc8a552931e2e82ee5fc2df1bcef1

    • memory/1036-8-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/1036-7-0x00000000744DE000-0x00000000744DF000-memory.dmp

      Filesize

      4KB

    • memory/1036-6-0x0000000005390000-0x00000000053A2000-memory.dmp

      Filesize

      72KB

    • memory/1036-9-0x0000000005670000-0x0000000005680000-memory.dmp

      Filesize

      64KB

    • memory/1036-10-0x0000000006930000-0x00000000069F0000-memory.dmp

      Filesize

      768KB

    • memory/1036-11-0x0000000006470000-0x000000000650C000-memory.dmp

      Filesize

      624KB

    • memory/1036-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

      Filesize

      4KB

    • memory/1036-54-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/1036-5-0x00000000051B0000-0x00000000051BA000-memory.dmp

      Filesize

      40KB

    • memory/1036-4-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/1036-3-0x0000000005100000-0x0000000005192000-memory.dmp

      Filesize

      584KB

    • memory/1036-2-0x00000000056B0000-0x0000000005C54000-memory.dmp

      Filesize

      5.6MB

    • memory/1036-1-0x0000000000600000-0x0000000000708000-memory.dmp

      Filesize

      1.0MB

    • memory/1916-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-115-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1916-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-140-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-43-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-114-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1916-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-55-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-132-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-111-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1916-59-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-58-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-61-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-60-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-149-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1916-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3376-70-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3376-66-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3376-71-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4468-72-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4468-73-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4468-65-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4532-104-0x0000000006F90000-0x0000000006FA1000-memory.dmp

      Filesize

      68KB

    • memory/4532-107-0x0000000006FC0000-0x0000000006FCE000-memory.dmp

      Filesize

      56KB

    • memory/4532-16-0x00000000044B0000-0x00000000044E6000-memory.dmp

      Filesize

      216KB

    • memory/4532-17-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-85-0x0000000072FA0000-0x0000000072FEC000-memory.dmp

      Filesize

      304KB

    • memory/4532-18-0x0000000004B20000-0x0000000005148000-memory.dmp

      Filesize

      6.2MB

    • memory/4532-97-0x00000000073E0000-0x0000000007A5A000-memory.dmp

      Filesize

      6.5MB

    • memory/4532-98-0x0000000006D90000-0x0000000006DAA000-memory.dmp

      Filesize

      104KB

    • memory/4532-19-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-23-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-125-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-103-0x0000000007010000-0x00000000070A6000-memory.dmp

      Filesize

      600KB

    • memory/4532-109-0x00000000070D0000-0x00000000070EA000-memory.dmp

      Filesize

      104KB

    • memory/4532-37-0x00000000054A0000-0x00000000057F4000-memory.dmp

      Filesize

      3.3MB

    • memory/4532-108-0x0000000006FD0000-0x0000000006FE4000-memory.dmp

      Filesize

      80KB

    • memory/4556-64-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4556-63-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4556-62-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4560-56-0x0000000005EC0000-0x0000000005EDE000-memory.dmp

      Filesize

      120KB

    • memory/4560-25-0x0000000005620000-0x0000000005642000-memory.dmp

      Filesize

      136KB

    • memory/4560-27-0x0000000005730000-0x0000000005796000-memory.dmp

      Filesize

      408KB

    • memory/4560-117-0x0000000007510000-0x0000000007518000-memory.dmp

      Filesize

      32KB

    • memory/4560-26-0x00000000056C0000-0x0000000005726000-memory.dmp

      Filesize

      408KB

    • memory/4560-57-0x0000000005F90000-0x0000000005FDC000-memory.dmp

      Filesize

      304KB

    • memory/4560-101-0x0000000007260000-0x000000000726A000-memory.dmp

      Filesize

      40KB

    • memory/4560-124-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4560-22-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4560-21-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4560-20-0x00000000744D0000-0x0000000074C80000-memory.dmp

      Filesize

      7.7MB

    • memory/4560-74-0x0000000006E80000-0x0000000006EB2000-memory.dmp

      Filesize

      200KB

    • memory/4560-96-0x00000000070C0000-0x0000000007163000-memory.dmp

      Filesize

      652KB

    • memory/4560-75-0x0000000072FA0000-0x0000000072FEC000-memory.dmp

      Filesize

      304KB

    • memory/4560-86-0x00000000064A0000-0x00000000064BE000-memory.dmp

      Filesize

      120KB