Analysis

  • max time kernel
    148s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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.

  • 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 4 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
    "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2720
    • 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:2692
    • 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:2348
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF41F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1112
    • 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:1724
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\edprteytb"
        3⤵
          PID:2256
        • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
          C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\edprteytb"
          3⤵
            PID:488
          • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
            C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\edprteytb"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:700
          • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
            C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\oxvjtwivprxa"
            3⤵
              PID:668
            • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
              C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\oxvjtwivprxa"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2440
            • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
              C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\zzaumptodzpnujvh"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:2188

        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\Temp\edprteytb

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\tmpF41F.tmp

          Filesize

          1KB

          MD5

          3fc7dc0a520351ddea9c6ed080c2be87

          SHA1

          5da173cc39c580f9fb55fac4c4a259356c4415a2

          SHA256

          5789ed11fb32bf7cfca83771a1b7f262afe9e9ab00b0a1b6b345cd79d0cce43a

          SHA512

          e37ede72ef4b1e8da3a3170577734f490f9469f80b03aedf28bf62d4858077566248bb6e1a18e419eae51e2232c635401f53d7c3f1878307e1a6613fe72022cd

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

          Filesize

          7KB

          MD5

          597c75547e7b7c942d2a03ac083ff726

          SHA1

          bde62acc4f682141e54f03292a699496cfb00902

          SHA256

          a1a36ba77d1497ad6baff30458ca3c41b11518428fd05578eec169f56ba37f99

          SHA512

          ec34bc41f07d92f3d6fd77a668a52ba4792d741b2635b270fb287091ee81b4c51d306114f65396914e553380e5782b057945e0c2f66d3d2b2c6550551bdbd0ff

        • memory/700-59-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/700-56-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/700-64-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/700-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1724-47-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-103-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-102-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-39-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1724-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-44-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-95-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-46-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-94-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-50-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-87-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-86-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-80-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-78-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1724-79-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1724-75-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1724-72-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1724-71-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2188-62-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2188-61-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2188-63-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2440-66-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2440-58-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2440-65-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2720-5-0x00000000749DE000-0x00000000749DF000-memory.dmp

          Filesize

          4KB

        • memory/2720-2-0x00000000749D0000-0x00000000750BE000-memory.dmp

          Filesize

          6.9MB

        • memory/2720-4-0x0000000000C00000-0x0000000000C1A000-memory.dmp

          Filesize

          104KB

        • memory/2720-3-0x0000000005020000-0x0000000005108000-memory.dmp

          Filesize

          928KB

        • memory/2720-1-0x0000000001340000-0x000000000143A000-memory.dmp

          Filesize

          1000KB

        • memory/2720-6-0x00000000749D0000-0x00000000750BE000-memory.dmp

          Filesize

          6.9MB

        • memory/2720-9-0x0000000005110000-0x00000000051D0000-memory.dmp

          Filesize

          768KB

        • memory/2720-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

          Filesize

          4KB

        • memory/2720-45-0x00000000749D0000-0x00000000750BE000-memory.dmp

          Filesize

          6.9MB

        • memory/2720-7-0x0000000000400000-0x000000000040C000-memory.dmp

          Filesize

          48KB

        • memory/2720-8-0x0000000000420000-0x0000000000430000-memory.dmp

          Filesize

          64KB