Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-11-2024 06:36

General

  • Target

    da64ef3f58dcd1477b91418255568f70.exe

  • Size

    1.0MB

  • MD5

    da64ef3f58dcd1477b91418255568f70

  • SHA1

    386e418b3d816c00ec25b084a2fc9ad2c009e887

  • SHA256

    9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6

  • SHA512

    d9b443729cd244629c3416d94dae0413e7288e8fc3bb1b74758c46d7efa8265600a7f4c2231918ab434951385d9e54c0fba6c25d04416266d7642bebcec97dd8

  • SSDEEP

    24576:ug/fo38qzl/vo8VyMKm62wPLOfsbd7384gmRF:xvqzl48AMNGOfs57M4tR

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

81.161.238.174:46098

127.0.0.1:46098

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-UZGQA3

  • 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.

  • Remcos family
  • Detected Nirsoft tools 2 IoCs

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

  • 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 3 TTPs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
    "C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.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:852
    • 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\da64ef3f58dcd1477b91418255568f70.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3516
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gAGKIpbVdGGk.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4264
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gAGKIpbVdGGk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEABE.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1128
    • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
      "C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe"
      2⤵
        PID:3688
      • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
        "C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1572
        • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
          C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe /stext "C:\Users\Admin\AppData\Local\Temp\urmcgwarrsvcpigyqyaycjxofoqtxnq"
          3⤵
            PID:3976
          • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
            C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe /stext "C:\Users\Admin\AppData\Local\Temp\urmcgwarrsvcpigyqyaycjxofoqtxnq"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:4280
          • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
            C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe /stext "C:\Users\Admin\AppData\Local\Temp\wlsvhpktfanhrocczjvzfwkfovzcyyhcjf"
            3⤵
            • Suspicious use of UnmapMainImage
            PID:2052
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2052 -s 12
              4⤵
              • Program crash
              PID:3776
          • C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe
            C:\Users\Admin\AppData\Local\Temp\da64ef3f58dcd1477b91418255568f70.exe /stext "C:\Users\Admin\AppData\Local\Temp\hoxfiz"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1096
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2052 -ip 2052
        1⤵
          PID:4372

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • 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

          61ed08452d2c3ca16351fe4907264c4c

          SHA1

          3c8e5e503dc7c29a74ed3631e95a83480e45e1c7

          SHA256

          46cee0f4483234e2f2727d4ed14a4b9040efec93ae2fea9c3fe7c0c489309cc5

          SHA512

          84af9507acf1ba99ef91f1f5ee3a808f648e9620befbf06801c4232f595fcd6a2ae6d2152091146a0dd6a5f97774b05de696c55a46e6cebb1379b12089385214

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r5zekre4.3ad.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          1KB

          MD5

          564cae185d26f457f249eaca528e0081

          SHA1

          8ad8f5da846d81c265665f10a994c28b6fe54175

          SHA256

          b4d225197eee20440470042b4f97ba4ae530d9de48d202fb03faa76ce55a60d1

          SHA512

          7372dfd43115068f8b4c0ac2ebe979a546ce798d6eae25f6f12a207ee1bb3e311a0f8a60d70c5aa959c841c16a2ba8e1a9fce7665c7217da4a183dc5d3269afe

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

          Filesize

          4KB

          MD5

          75379d3dcbcea6a69bc75b884816dd40

          SHA1

          7e073a03c3bdbbc60375ddbe56bba211c3d412a6

          SHA256

          cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

          SHA512

          710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

        • memory/852-5-0x00000000057A0000-0x000000000583C000-memory.dmp

          Filesize

          624KB

        • memory/852-4-0x0000000005590000-0x000000000559A000-memory.dmp

          Filesize

          40KB

        • memory/852-7-0x00000000069C0000-0x00000000069DC000-memory.dmp

          Filesize

          112KB

        • memory/852-8-0x000000007519E000-0x000000007519F000-memory.dmp

          Filesize

          4KB

        • memory/852-9-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/852-10-0x000000000B000000-0x000000000B0C0000-memory.dmp

          Filesize

          768KB

        • memory/852-1-0x00000000009F0000-0x0000000000AFC000-memory.dmp

          Filesize

          1.0MB

        • memory/852-51-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/852-2-0x0000000005BA0000-0x0000000006144000-memory.dmp

          Filesize

          5.6MB

        • memory/852-0-0x000000007519E000-0x000000007519F000-memory.dmp

          Filesize

          4KB

        • memory/852-6-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/852-3-0x00000000054D0000-0x0000000005562000-memory.dmp

          Filesize

          584KB

        • memory/1096-74-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1096-73-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1096-69-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1572-47-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-55-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-123-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-46-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-75-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-122-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1572-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-124-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-50-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-118-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1572-125-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-126-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-121-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1572-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-58-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-56-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-62-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-64-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-127-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-131-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-128-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-76-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-129-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1572-130-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2052-68-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3516-22-0x0000000005D00000-0x0000000005D22000-memory.dmp

          Filesize

          136KB

        • memory/3516-89-0x00000000074F0000-0x000000000750E000-memory.dmp

          Filesize

          120KB

        • memory/3516-108-0x0000000007AF0000-0x0000000007B04000-memory.dmp

          Filesize

          80KB

        • memory/3516-90-0x0000000007770000-0x0000000007813000-memory.dmp

          Filesize

          652KB

        • memory/3516-79-0x0000000075A40000-0x0000000075A8C000-memory.dmp

          Filesize

          304KB

        • memory/3516-78-0x0000000007530000-0x0000000007562000-memory.dmp

          Filesize

          200KB

        • memory/3516-19-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/3516-102-0x00000000078B0000-0x00000000078CA000-memory.dmp

          Filesize

          104KB

        • memory/3516-101-0x0000000007EF0000-0x000000000856A000-memory.dmp

          Filesize

          6.5MB

        • memory/3516-15-0x0000000005020000-0x0000000005056000-memory.dmp

          Filesize

          216KB

        • memory/3516-104-0x0000000007920000-0x000000000792A000-memory.dmp

          Filesize

          40KB

        • memory/3516-24-0x0000000005E10000-0x0000000005E76000-memory.dmp

          Filesize

          408KB

        • memory/3516-23-0x0000000005DA0000-0x0000000005E06000-memory.dmp

          Filesize

          408KB

        • memory/3516-26-0x0000000005F50000-0x00000000062A4000-memory.dmp

          Filesize

          3.3MB

        • memory/3516-17-0x0000000005690000-0x0000000005CB8000-memory.dmp

          Filesize

          6.2MB

        • memory/3516-18-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/3516-110-0x0000000007BD0000-0x0000000007BD8000-memory.dmp

          Filesize

          32KB

        • memory/3516-16-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/3516-117-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4264-54-0x00000000062C0000-0x000000000630C000-memory.dmp

          Filesize

          304KB

        • memory/4264-116-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4264-53-0x0000000005F50000-0x0000000005F6E000-memory.dmp

          Filesize

          120KB

        • memory/4264-27-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4264-107-0x00000000074A0000-0x00000000074AE000-memory.dmp

          Filesize

          56KB

        • memory/4264-106-0x0000000007470000-0x0000000007481000-memory.dmp

          Filesize

          68KB

        • memory/4264-105-0x00000000074F0000-0x0000000007586000-memory.dmp

          Filesize

          600KB

        • memory/4264-21-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4264-20-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4264-91-0x0000000075A40000-0x0000000075A8C000-memory.dmp

          Filesize

          304KB

        • memory/4264-109-0x00000000075B0000-0x00000000075CA000-memory.dmp

          Filesize

          104KB

        • memory/4280-67-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4280-65-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4280-66-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB