Analysis

  • max time kernel
    148s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-09-2024 13:20

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.

  • 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 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 18 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 4 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\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:4364
    • 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:4372
    • 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:3524
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PNLFWPpnxTlxjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE59D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4196
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:4068
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        2⤵
          PID:460
        • 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: GetForegroundWindowSpam
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:392
          • 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\drfiyaplwlciyqpjafbdmbdcokhz"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:3312
          • 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\nmkbqsanstunjxlnjqofxgptxryafdo"
            3⤵
              PID:1236
            • 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\nmkbqsanstunjxlnjqofxgptxryafdo"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:4692
            • 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\xgxt"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1260

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\dfgh\logs.dat

          Filesize

          144B

          MD5

          3f6f629555c740328668d156bb5d8daa

          SHA1

          20259e73381140429d875094e08ab90c3be5dd90

          SHA256

          4b7148e0a7a107f20d77abcd44594b84ff494ae0c6b0e58640e571d54fa0506b

          SHA512

          cc3130712143c37f7fee12efcecb52b25ea9f874ac18d1172ce36db00be3e3af1bc7519ff7e12c30a49a5f79ea18f77e20222fe76d4c11035ff6850092719749

        • 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

          ceccf3200b2cec1b7257d70e1b66728c

          SHA1

          f05ee30bc981c2f23d9e637a4333896907ba8b11

          SHA256

          d79e925dc68cc74b3422a373920aae06c02899923f2b63f1d5ea1804ba1e47e9

          SHA512

          968391f4834c5b816e5c0a783970a847e76993fccebec6ddef4766464ec9ef1117409137412cdd5f76221596fbee0b40a9cd214c19efdbe3f86270c46ada325d

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2feoixoy.3dg.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          4KB

          MD5

          05d209dc2e52f4877b0210319d699d7c

          SHA1

          f80b9ea3164019831fa0b5cffc864c0d496a002b

          SHA256

          278f3fd9076c23dc3d397375c5f586aa23b15c9e42b22139748e20f70f127160

          SHA512

          701f72884bf941ec3e60f6f8bb98c26743447c276de2d15ca27a406ccc6a39dafeef9a6f83264d52ebb93923af738fa7b16f617fb33dc54e5a7ed93b188aee9a

        • C:\Users\Admin\AppData\Local\Temp\tmpE59D.tmp

          Filesize

          1KB

          MD5

          0f11a0b0912b12cac5d2a6e47bad4f60

          SHA1

          d186ab6c79df1011323f8aadd0c9972e98eca161

          SHA256

          dcefad1183c22a63e150b3d9cfded85795bbf67ddac7bbfc8c383f54174cbda7

          SHA512

          eb6d1550091ab321f90a3911e7fb3428c4081dbd59758de475833de9db7e145263d64de574ba7611342e11ea867b3e02686db12d22480aacbc8ca7dca060a139

        • memory/392-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-77-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/392-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-58-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-80-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/392-156-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-155-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-148-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-147-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-140-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-82-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-139-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-126-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-81-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/392-132-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-62-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-47-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-51-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-127-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-128-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/392-131-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1260-73-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1260-72-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1260-74-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3312-63-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3312-65-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3312-64-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3524-32-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/3524-21-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/3524-107-0x0000000007B60000-0x0000000007B7A000-memory.dmp

          Filesize

          104KB

        • memory/3524-121-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/3524-55-0x0000000006810000-0x000000000682E000-memory.dmp

          Filesize

          120KB

        • memory/3524-56-0x00000000068C0000-0x000000000690C000-memory.dmp

          Filesize

          304KB

        • memory/3524-25-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/3524-111-0x0000000007D90000-0x0000000007D9E000-memory.dmp

          Filesize

          56KB

        • memory/3524-106-0x00000000081A0000-0x000000000881A000-memory.dmp

          Filesize

          6.5MB

        • memory/3524-95-0x00000000751C0000-0x000000007520C000-memory.dmp

          Filesize

          304KB

        • memory/4364-0-0x000000007493E000-0x000000007493F000-memory.dmp

          Filesize

          4KB

        • memory/4364-2-0x0000000005380000-0x0000000005924000-memory.dmp

          Filesize

          5.6MB

        • memory/4364-7-0x000000007493E000-0x000000007493F000-memory.dmp

          Filesize

          4KB

        • memory/4364-6-0x0000000005110000-0x0000000005120000-memory.dmp

          Filesize

          64KB

        • memory/4364-3-0x0000000004E80000-0x0000000004F12000-memory.dmp

          Filesize

          584KB

        • memory/4364-10-0x0000000008D90000-0x0000000008E2C000-memory.dmp

          Filesize

          624KB

        • memory/4364-9-0x0000000006780000-0x0000000006840000-memory.dmp

          Filesize

          768KB

        • memory/4364-1-0x0000000000400000-0x00000000004E2000-memory.dmp

          Filesize

          904KB

        • memory/4364-5-0x0000000004F50000-0x0000000004F5A000-memory.dmp

          Filesize

          40KB

        • memory/4364-8-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4364-54-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4364-4-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4372-24-0x00000000056D0000-0x0000000005736000-memory.dmp

          Filesize

          408KB

        • memory/4372-83-0x0000000006CF0000-0x0000000006D22000-memory.dmp

          Filesize

          200KB

        • memory/4372-110-0x0000000007270000-0x0000000007281000-memory.dmp

          Filesize

          68KB

        • memory/4372-108-0x00000000070E0000-0x00000000070EA000-memory.dmp

          Filesize

          40KB

        • memory/4372-112-0x00000000072B0000-0x00000000072C4000-memory.dmp

          Filesize

          80KB

        • memory/4372-113-0x00000000073B0000-0x00000000073CA000-memory.dmp

          Filesize

          104KB

        • memory/4372-114-0x0000000007390000-0x0000000007398000-memory.dmp

          Filesize

          32KB

        • memory/4372-120-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4372-105-0x0000000006F30000-0x0000000006FD3000-memory.dmp

          Filesize

          652KB

        • memory/4372-94-0x0000000006300000-0x000000000631E000-memory.dmp

          Filesize

          120KB

        • memory/4372-84-0x00000000751C0000-0x000000007520C000-memory.dmp

          Filesize

          304KB

        • memory/4372-109-0x00000000072F0000-0x0000000007386000-memory.dmp

          Filesize

          600KB

        • memory/4372-15-0x00000000047B0000-0x00000000047E6000-memory.dmp

          Filesize

          216KB

        • memory/4372-17-0x0000000004F80000-0x00000000055A8000-memory.dmp

          Filesize

          6.2MB

        • memory/4372-16-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4372-22-0x0000000004EA0000-0x0000000004EC2000-memory.dmp

          Filesize

          136KB

        • memory/4372-26-0x0000000005740000-0x0000000005A94000-memory.dmp

          Filesize

          3.3MB

        • memory/4372-23-0x00000000055B0000-0x0000000005616000-memory.dmp

          Filesize

          408KB

        • memory/4372-19-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4372-18-0x0000000074930000-0x00000000750E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4692-71-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4692-70-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4692-69-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB