Analysis

  • max time kernel
    299s
  • max time network
    281s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 07:57

General

  • Target

    18V4860 TS Light Diesel.exe

  • Size

    881KB

  • MD5

    88ad99bd08e94b721914d8368c3a259b

  • SHA1

    8d6518f2ea260d9835c3ed7190808fc263ed010a

  • SHA256

    4cce5506593907c3db78282849ed41729ca7cf737e1d38cb82dc10e27d92ff16

  • SHA512

    9dece9766da615b5b5b72c1d8167f7c3f54a73d3cc95a024e6b541e7c6c278606d9e8fdba37102cb251ed227a16780630033a6e8dcee9acc075fd417bb8c3e54

  • SSDEEP

    24576:qQ/EymH4hro8jGqj56ulEJ8v+FgFOfY823:3yHGrhGqdFlECv+CX

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.drechftankholding.com:2404

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

    dfgh

  • mouse_option

    false

  • mutex

    Rmc-8J6PG9

  • 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 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 19 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.exe
    "C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.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:3748
    • 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\18V4860 TS Light Diesel.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:924
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PNLFWPpnxTlxjH.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:928
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PNLFWPpnxTlxjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE704.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3112
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\thdqpqojxbdufsxcdqove"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:3960
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\ebqjqjzctkvhhylgmaippgiyu"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:4408
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\gvwbrbkehsnlrmhkddvqslvpdhfg"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2452
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\qkfkawfwhnadvngujm"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1332
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\sekdboqxvvsixtcyaxoze"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:4992
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\dgxncharjdkmihqckhbtgjulf"
        3⤵
          PID:1540
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\dgxncharjdkmihqckhbtgjulf"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:396

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\dfgh\logs.dat

      Filesize

      144B

      MD5

      53e693659fa16e46d124722b58ad85f3

      SHA1

      eec850f37cc0786ecef70884de3b3d9927d0e987

      SHA256

      fcea1243c7f1a50154605cfc41da5754ae0a6277a62ad29795fd46ec6f15f812

      SHA512

      1b1fcc548d82d2fe2d56017d2945591899e1594ab92c25a08540dcbc61c16842c8b1cdfdbe1e6e7cece992fb5a8506f0ab198c6c306009dd8a46b676b0d401c2

    • 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

      ea0b929b1340fa581053ba2af0248da4

      SHA1

      a4cf6c0642ba16ef04b07c98c4663c0c3e8ba7a6

      SHA256

      17a4604b358087c5e0fff17e95da518452b6fac35024f7e481d06252b843698d

      SHA512

      8be3091d0f7d19dd5d492e73757fc9d45733ec8e069eb6e0fb6dfe3b41aa154d4807421960a80ad24cdd6cef7d763856cb6c0568e782cf4b48030c0ef4b27d26

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zyykflc5.mbw.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      c0ab2847671ed5375328c5127a02cc72

      SHA1

      dc2bcb51562fb17e5c8787833bc0181d88a5b75e

      SHA256

      e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

      SHA512

      0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

    • C:\Users\Admin\AppData\Local\Temp\tmpE704.tmp

      Filesize

      1KB

      MD5

      aa0a9df7cf24184e56ff8b9c9ed3689a

      SHA1

      de4bd0bed083e7292b7806001b0227cd55fac503

      SHA256

      31d02c1586102d5e13d3808d302546422523fe7c3345e91c59024410b5deee76

      SHA512

      bf2b70931d8eee784657ab72ddccd823c06449671d19a32aa91ac98fd6ead620d07ac217dbf9defc1ddab1f3c5b22cd7e5256fbf9fadf4213d6db454577b7d50

    • memory/924-98-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/924-17-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/924-55-0x0000000005E50000-0x0000000005E9C000-memory.dmp

      Filesize

      304KB

    • memory/924-90-0x0000000007420000-0x000000000743A000-memory.dmp

      Filesize

      104KB

    • memory/924-15-0x0000000004830000-0x0000000004866000-memory.dmp

      Filesize

      216KB

    • memory/924-87-0x00000000072E0000-0x00000000072F1000-memory.dmp

      Filesize

      68KB

    • memory/924-18-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/924-70-0x000000006F6B0000-0x000000006F6FC000-memory.dmp

      Filesize

      304KB

    • memory/924-25-0x0000000004F20000-0x0000000004F86000-memory.dmp

      Filesize

      408KB

    • memory/924-53-0x0000000005DC0000-0x0000000005DDE000-memory.dmp

      Filesize

      120KB

    • memory/924-23-0x0000000004EB0000-0x0000000004F16000-memory.dmp

      Filesize

      408KB

    • memory/924-16-0x0000000005060000-0x0000000005688000-memory.dmp

      Filesize

      6.2MB

    • memory/928-88-0x0000000007A30000-0x0000000007A3E000-memory.dmp

      Filesize

      56KB

    • memory/928-24-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/928-19-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/928-71-0x00000000076B0000-0x0000000007753000-memory.dmp

      Filesize

      652KB

    • memory/928-58-0x0000000007660000-0x0000000007692000-memory.dmp

      Filesize

      200KB

    • memory/928-69-0x0000000007640000-0x000000000765E000-memory.dmp

      Filesize

      120KB

    • memory/928-97-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/928-91-0x0000000007B20000-0x0000000007B28000-memory.dmp

      Filesize

      32KB

    • memory/928-89-0x0000000007A40000-0x0000000007A54000-memory.dmp

      Filesize

      80KB

    • memory/928-20-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/928-86-0x0000000007A80000-0x0000000007B16000-memory.dmp

      Filesize

      600KB

    • memory/928-85-0x0000000007870000-0x000000000787A000-memory.dmp

      Filesize

      40KB

    • memory/928-26-0x0000000005F10000-0x0000000006264000-memory.dmp

      Filesize

      3.3MB

    • memory/928-22-0x0000000005530000-0x0000000005552000-memory.dmp

      Filesize

      136KB

    • memory/928-83-0x0000000007E40000-0x00000000084BA000-memory.dmp

      Filesize

      6.5MB

    • memory/928-84-0x0000000007800000-0x000000000781A000-memory.dmp

      Filesize

      104KB

    • memory/928-59-0x000000006F6B0000-0x000000006F6FC000-memory.dmp

      Filesize

      304KB

    • memory/2452-105-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2452-111-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2452-110-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3112-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-57-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-211-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-210-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-203-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-202-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-194-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-195-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-187-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-186-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-179-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-178-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-171-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-45-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-170-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-163-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-162-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-158-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-81-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-138-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-139-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-121-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/3112-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-120-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/3112-117-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/3112-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-46-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-135-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3112-136-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3748-4-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/3748-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

      Filesize

      4KB

    • memory/3748-2-0x00000000057A0000-0x0000000005D44000-memory.dmp

      Filesize

      5.6MB

    • memory/3748-3-0x0000000005290000-0x0000000005322000-memory.dmp

      Filesize

      584KB

    • memory/3748-6-0x0000000005500000-0x0000000005510000-memory.dmp

      Filesize

      64KB

    • memory/3748-10-0x00000000094C0000-0x000000000955C000-memory.dmp

      Filesize

      624KB

    • memory/3748-9-0x0000000006E90000-0x0000000006F50000-memory.dmp

      Filesize

      768KB

    • memory/3748-1-0x00000000007C0000-0x00000000008A2000-memory.dmp

      Filesize

      904KB

    • memory/3748-54-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/3748-5-0x0000000005250000-0x000000000525A000-memory.dmp

      Filesize

      40KB

    • memory/3748-8-0x0000000074D80000-0x0000000075530000-memory.dmp

      Filesize

      7.7MB

    • memory/3748-7-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

      Filesize

      4KB

    • memory/3960-106-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3960-103-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3960-109-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4408-107-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4408-104-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4408-108-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB