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Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/09/2024, 13:05

General

  • Target

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe

  • Size

    991KB

  • MD5

    c18b6791df510f32c72a619ef3dd7c7d

  • SHA1

    671e8af4049ebc8e93a4a9c968dfe747c24c3a60

  • SHA256

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69

  • SHA512

    ac5d54ad8e46324286d55f7c1a78a6315483e338ebebd36c5d2c2db30085da9ef734bec20782120f4ec8eaf101bccc51f8612fa26adb6e0f0af0711c350b1974

  • SSDEEP

    12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZX:vzshZEXw7jIS6RuXGUDQFDMEKW4THM05

Malware Config

Extracted

Family

remcos

Botnet

Aug 23C

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-RCNGU6

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
    "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.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:3904
    • 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\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4712
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkhOsslQS.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2124
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5D4E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:872
    • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
      "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
        PID:1736
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:868
        • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
          C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\djpbiuxlfshxrtpbtgpirdiuw"
          3⤵
            PID:1984
          • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
            C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\djpbiuxlfshxrtpbtgpirdiuw"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1040
          • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
            C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\necuinhntazkbzlecrbjciulxnlp"
            3⤵
              PID:2964
            • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
              C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\necuinhntazkbzlecrbjciulxnlp"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:3092
            • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
              C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\qgimbxsghiroefzitbolfvpugtcynego"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:748

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          1d9c22bed0a10c89bd0529108cb836b6

          SHA1

          b7ba60115ccd75358d4eeab74f732f9e0af92db9

          SHA256

          7cf411a70399feb35a8b11c366a891baad84bb9828677edb4fa529099231b448

          SHA512

          186432ffb2b696e50d925c6de9b126c83249a7c99d2681f951ac441a7f10c6d904e6c75db2fe15aae04ed88d50a7f0fabfc21f47a1fcd3b15287613798fbe0b8

        • 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

          358a8d6dc8de4de953b8df49b57fe3ea

          SHA1

          95e1c9e661e867c6c8e0fd5344038572bdbeefe0

          SHA256

          4b32025cb037e74e283f5d499a37cc378ac42eee845259e1b961d4500a51d8de

          SHA512

          af0ff38a911a6eb858c892e734f1066cf4368d75a45dae9837a1fcda035039fb4dc7d35a1eea8b5e3a8b492f50059d802aa1701999a7aab2b353018d258e0ad2

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1lrubbeb.45m.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          4KB

          MD5

          2538ec9e8425a905937573069b77d4c2

          SHA1

          ad0c2b7aff4382e23444d26adac96d9697b849f3

          SHA256

          29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

          SHA512

          a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

        • C:\Users\Admin\AppData\Local\Temp\tmp5D4E.tmp

          Filesize

          1KB

          MD5

          1775465ce826037054cc943bd25aa2b7

          SHA1

          76fd9dcb3e399449a8c557b11289e7b2e70bbce3

          SHA256

          ed2ca6472610d7d6752482dc75f6673e8fde5a1f2d92da6fc0fd6e0efa412623

          SHA512

          fc90cd9ac696bee4436c017d266cc0205fe2ace968b4cea436b609c1650fa8060471c34893a7438de285740f069f4bb4bf4cfb132c56106ce4cfff1231214fcd

        • memory/748-113-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/748-112-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/748-117-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/868-128-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-124-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/868-123-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/868-120-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/868-127-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-152-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-135-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-136-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-151-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-144-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-105-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-103-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-143-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-102-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-125-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-55-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/868-99-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1040-107-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1040-110-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1040-106-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2124-23-0x0000000005610000-0x0000000005632000-memory.dmp

          Filesize

          136KB

        • memory/2124-22-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/2124-61-0x0000000075240000-0x000000007528C000-memory.dmp

          Filesize

          304KB

        • memory/2124-71-0x0000000006BB0000-0x0000000006BCE000-memory.dmp

          Filesize

          120KB

        • memory/2124-60-0x00000000075F0000-0x0000000007622000-memory.dmp

          Filesize

          200KB

        • memory/2124-72-0x0000000007830000-0x00000000078D3000-memory.dmp

          Filesize

          652KB

        • memory/2124-73-0x0000000007F60000-0x00000000085DA000-memory.dmp

          Filesize

          6.5MB

        • memory/2124-74-0x0000000007900000-0x000000000791A000-memory.dmp

          Filesize

          104KB

        • memory/2124-75-0x0000000007960000-0x000000000796A000-memory.dmp

          Filesize

          40KB

        • memory/2124-26-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/2124-76-0x0000000007B70000-0x0000000007C06000-memory.dmp

          Filesize

          600KB

        • memory/2124-83-0x0000000007AF0000-0x0000000007B01000-memory.dmp

          Filesize

          68KB

        • memory/2124-88-0x0000000007B20000-0x0000000007B2E000-memory.dmp

          Filesize

          56KB

        • memory/2124-89-0x0000000007B30000-0x0000000007B44000-memory.dmp

          Filesize

          80KB

        • memory/2124-90-0x0000000007C30000-0x0000000007C4A000-memory.dmp

          Filesize

          104KB

        • memory/2124-91-0x0000000007C10000-0x0000000007C18000-memory.dmp

          Filesize

          32KB

        • memory/2124-57-0x00000000065D0000-0x00000000065EE000-memory.dmp

          Filesize

          120KB

        • memory/2124-97-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/2124-58-0x0000000006B20000-0x0000000006B6C000-memory.dmp

          Filesize

          304KB

        • memory/2124-50-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/3092-108-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3092-109-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3092-111-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3904-10-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/3904-4-0x0000000005610000-0x000000000561A000-memory.dmp

          Filesize

          40KB

        • memory/3904-1-0x0000000000B00000-0x0000000000BFA000-memory.dmp

          Filesize

          1000KB

        • memory/3904-2-0x0000000005BB0000-0x0000000006154000-memory.dmp

          Filesize

          5.6MB

        • memory/3904-0-0x000000007499E000-0x000000007499F000-memory.dmp

          Filesize

          4KB

        • memory/3904-56-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/3904-6-0x00000000058D0000-0x000000000596C000-memory.dmp

          Filesize

          624KB

        • memory/3904-5-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/3904-3-0x00000000056A0000-0x0000000005732000-memory.dmp

          Filesize

          584KB

        • memory/3904-7-0x0000000006E60000-0x0000000006F48000-memory.dmp

          Filesize

          928KB

        • memory/3904-8-0x0000000005B80000-0x0000000005B9A000-memory.dmp

          Filesize

          104KB

        • memory/3904-9-0x000000007499E000-0x000000007499F000-memory.dmp

          Filesize

          4KB

        • memory/3904-13-0x00000000069D0000-0x0000000006A90000-memory.dmp

          Filesize

          768KB

        • memory/3904-12-0x0000000006970000-0x0000000006980000-memory.dmp

          Filesize

          64KB

        • memory/3904-11-0x0000000006960000-0x000000000696C000-memory.dmp

          Filesize

          48KB

        • memory/4712-25-0x0000000005E50000-0x0000000005EB6000-memory.dmp

          Filesize

          408KB

        • memory/4712-18-0x0000000002B70000-0x0000000002BA6000-memory.dmp

          Filesize

          216KB

        • memory/4712-19-0x0000000005740000-0x0000000005D68000-memory.dmp

          Filesize

          6.2MB

        • memory/4712-20-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/4712-21-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/4712-32-0x0000000005EC0000-0x0000000006214000-memory.dmp

          Filesize

          3.3MB

        • memory/4712-24-0x0000000005DE0000-0x0000000005E46000-memory.dmp

          Filesize

          408KB

        • memory/4712-98-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/4712-43-0x0000000074990000-0x0000000075140000-memory.dmp

          Filesize

          7.7MB

        • memory/4712-77-0x0000000075240000-0x000000007528C000-memory.dmp

          Filesize

          304KB