Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-09-2024 02:08

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 13 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 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:4404
    • 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:3220
    • 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:2104
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PNLFWPpnxTlxjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB5E2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3380
    • 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:744
      • 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\zvfsvvncukmytktlzdimxwlhh"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1520
      • 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\jxklvoxeiselwqhpqocoibfqibhm"
        3⤵
          PID:444
        • 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\jxklvoxeiselwqhpqocoibfqibhm"
          3⤵
            PID:3956
          • 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\jxklvoxeiselwqhpqocoibfqibhm"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:3624
          • 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\mrpdwgiywawqgwdtzzpplnahqirvswq"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3464

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\dfgh\logs.dat

        Filesize

        144B

        MD5

        14a4ae0231de2cc7cd4d7bc6da8fc55f

        SHA1

        05a9fe10b2e5a3bc6255adcf33240a5097c1629a

        SHA256

        e996c968ebcc31f23d1ce8c8bbef3ce1f86f837c1ddb5ea66c8758d4158dbb09

        SHA512

        754c923b5cd285887c7878eb0097751f13264fd46566e4260b221de7042b643164b3f350769d05e8f6efe9ba5c4eaa4c0a9108afca81bc52755c6e18d6452867

      • 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

        1e51fb35cba30364a6f62d201c4c5b24

        SHA1

        fe0def7a4ad80f1e736f56836165c72761b5f1eb

        SHA256

        24976ee7f89202fb012d252bc2ff16a8cd7cad2204abd70a00536fa89ef20c49

        SHA512

        8a64ae0c8cfbfdf69cbbe6f5a630db86c8afee805b24110c1be0fd2aa4b1a0288c383f5295958843d3a888b39cbbc21e5c46bc7d785b7223f54289e86914ad41

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_geoxbc0k.ens.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmpB5E2.tmp

        Filesize

        1KB

        MD5

        06b15f752c70c90fc14a380f4ca51970

        SHA1

        06e2da897092a724563ec1eaca9d4f3d212a1b0d

        SHA256

        23113fa1e58c85b2f22bd4d97160020bb7671d05c7ba3a7f4a3ee09e3c8b040a

        SHA512

        1897a23be71f1f626a5112f02fd682355bbcbd852b8524daeb191c3923a8414a80514c138bf33632cc4348555a1e8b60d70750f8e61dfa29a220bc95e7918844

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

        Filesize

        4KB

        MD5

        8b8277c8f03c24d1f290dbe476e961d2

        SHA1

        2e13baf3a4b708277d550dc3dd1e0f99b131f78e

        SHA256

        9af6881f6dbffba028a7a977f4c0a43c764f840332986993ad66de7b816c2f9e

        SHA512

        7367a0236cd0d6cd731caf1ba1f4ea8f851ea1018a9c6b49db6e9d13b2aaba92767774da9169481918e4287021ff5c3a58c3143eaa5e7fe9fa88383208615948

      • memory/744-48-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-62-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-57-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-136-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-151-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-119-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/744-120-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/744-59-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-58-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-143-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-144-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-60-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-127-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-121-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-116-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/744-152-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-47-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-51-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-135-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-128-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-53-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/744-46-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1520-92-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1520-90-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/1520-91-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2104-105-0x0000000007C50000-0x0000000007C64000-memory.dmp

        Filesize

        80KB

      • memory/2104-86-0x0000000008060000-0x00000000086DA000-memory.dmp

        Filesize

        6.5MB

      • memory/2104-21-0x0000000005740000-0x0000000005762000-memory.dmp

        Filesize

        136KB

      • memory/2104-114-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2104-19-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2104-20-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2104-106-0x0000000007D50000-0x0000000007D6A000-memory.dmp

        Filesize

        104KB

      • memory/2104-23-0x0000000006060000-0x00000000060C6000-memory.dmp

        Filesize

        408KB

      • memory/2104-26-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2104-93-0x0000000007C10000-0x0000000007C21000-memory.dmp

        Filesize

        68KB

      • memory/2104-76-0x00000000752B0000-0x00000000752FC000-memory.dmp

        Filesize

        304KB

      • memory/3220-18-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/3220-17-0x00000000053D0000-0x00000000059F8000-memory.dmp

        Filesize

        6.2MB

      • memory/3220-63-0x00000000072B0000-0x00000000072E2000-memory.dmp

        Filesize

        200KB

      • memory/3220-88-0x0000000007680000-0x000000000768A000-memory.dmp

        Filesize

        40KB

      • memory/3220-89-0x0000000007880000-0x0000000007916000-memory.dmp

        Filesize

        600KB

      • memory/3220-32-0x0000000005CC0000-0x0000000006014000-memory.dmp

        Filesize

        3.3MB

      • memory/3220-75-0x00000000072F0000-0x0000000007393000-memory.dmp

        Filesize

        652KB

      • memory/3220-15-0x0000000004D60000-0x0000000004D96000-memory.dmp

        Filesize

        216KB

      • memory/3220-22-0x00000000052D0000-0x0000000005336000-memory.dmp

        Filesize

        408KB

      • memory/3220-55-0x00000000062C0000-0x00000000062DE000-memory.dmp

        Filesize

        120KB

      • memory/3220-87-0x0000000007600000-0x000000000761A000-memory.dmp

        Filesize

        104KB

      • memory/3220-24-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/3220-16-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/3220-74-0x0000000006840000-0x000000000685E000-memory.dmp

        Filesize

        120KB

      • memory/3220-64-0x00000000752B0000-0x00000000752FC000-memory.dmp

        Filesize

        304KB

      • memory/3220-104-0x0000000007830000-0x000000000783E000-memory.dmp

        Filesize

        56KB

      • memory/3220-113-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/3220-56-0x0000000006880000-0x00000000068CC000-memory.dmp

        Filesize

        304KB

      • memory/3220-107-0x0000000007920000-0x0000000007928000-memory.dmp

        Filesize

        32KB

      • memory/3464-96-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3464-101-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3464-102-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3624-100-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3624-94-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/3624-95-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4404-8-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/4404-0-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

        Filesize

        4KB

      • memory/4404-10-0x0000000009B80000-0x0000000009C1C000-memory.dmp

        Filesize

        624KB

      • memory/4404-9-0x0000000007510000-0x00000000075D0000-memory.dmp

        Filesize

        768KB

      • memory/4404-54-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/4404-7-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

        Filesize

        4KB

      • memory/4404-6-0x0000000005B10000-0x0000000005B20000-memory.dmp

        Filesize

        64KB

      • memory/4404-5-0x00000000059F0000-0x00000000059FA000-memory.dmp

        Filesize

        40KB

      • memory/4404-4-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/4404-3-0x0000000005940000-0x00000000059D2000-memory.dmp

        Filesize

        584KB

      • memory/4404-2-0x0000000005E00000-0x00000000063A4000-memory.dmp

        Filesize

        5.6MB

      • memory/4404-1-0x0000000000ED0000-0x0000000000FB2000-memory.dmp

        Filesize

        904KB