Overview

overview

10

Static

static

10

Solara.exe

windows10-2004-x64

10

Solara.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    899s
  • max time network
    538s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 10:37

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General

  • Target
    Solara.exe
  • Size 31.0MB
  • Sample260910-mn2b5sge82
  • SHA256 202b7d774a433ce589b6df96545e09fbd393eb6bc538064052e0c6d9dbb1c482
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaresheet_qwrqrmioqhvabidefense_evasionexecutionsheetratpersistenceprivilege_escalationransomwarespywaretrojan

Malware Config

Extracted

Family

  • sheetrat

Version

  • 2.6

Campaign

  • Sheet_qwrqrmioqhvabi

C2

  • 64.188.118.59:4444

Signatures

  • Family: Sheetrat, NonEuclid rat

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

    trojansheetrat
  • Detects Sheetrat obfuscated V1.8 and higher 1 IoCs

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

  • Detects Sheetrat obfuscated version 1 IoCs
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    persistenceprivilege_escalation
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 12 IoCs
  • Enumerates connected drives 3 TTPs 4 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 11 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 2 IoCs
    defense_evasion
  • Kills process with taskkill 2 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 7 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Solara.exe
    "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5220
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Unity" /tr "C:\Users\Admin\Documents\MATLAB.exe" & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:1256
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Unity" /tr "C:\Users\Admin\Documents\MATLAB.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4940
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1192
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo 5 /tn "Microsoft OneNote Host" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\Wireshark Host.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:1844
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo 5 /tn "Microsoft OneNote Host" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\Wireshark Host.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3148
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:5368
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2032
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:1020
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1612
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3200
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4644
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Windows\system32\schtasks.exe
        SchTaSKs /create /f /sc minute /mo -1 /tn "HandBrake" /tr "C:\Users\Admin\Documents\MATLAB.exe" /RL HIGHEST
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3368
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtASks /deLeTe /F /Tn "Unity" & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2220
      • C:\Windows\system32\schtasks.exe
        schtASks /deLeTe /F /Tn "Unity"
        3⤵
          PID:468
      • C:\Windows\SYSTEM32\CMD.exe
        "CMD" /C taskkill /im explorer.exe /f
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4788
        • C:\Windows\system32\taskkill.exe
          taskkill /im explorer.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4468
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtASks /deLeTe /F /Tn "Microsoft OneNote Host" & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4224
        • C:\Windows\system32\schtasks.exe
          schtASks /deLeTe /F /Tn "Microsoft OneNote Host"
          3⤵
            PID:4700
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp929.tmp.bat""
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:4584
          • C:\Windows\system32\timeout.exe
            timeout 5
            3⤵
            • Delays execution with timeout.exe
            PID:3840
          • C:\Windows\explorer.exe
            explorer.exe
            3⤵
            • Boot or Logon Autostart Execution: Active Setup
            • Enumerates connected drives
            • Checks SCSI registry key(s)
            • Modifies Internet Explorer settings
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            PID:200
          • C:\Windows\system32\taskkill.exe
            taskkill /im MATLAB.exe /f
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:3864
          • C:\Windows\system32\timeout.exe
            timeout 3
            3⤵
            • Delays execution with timeout.exe
            PID:3292
      • C:\Windows\system32\wbem\WmiApSrv.exe
        C:\Windows\system32\wbem\WmiApSrv.exe
        1⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:5408
      • C:\Users\Admin\Documents\MATLAB.exe
        C:\Users\Admin\Documents\MATLAB.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1088
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:844
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:5692
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:5640
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:5244
          • C:\Windows\explorer.exe
            explorer.exe /LOADSAVEDWINDOWS
            2⤵
            • Boot or Logon Autostart Execution: Active Setup
            • Enumerates connected drives
            • Checks SCSI registry key(s)
            • Modifies Internet Explorer settings
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            PID:1352
        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:1384
        • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
          "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:3340
        • C:\Windows\System32\SecurityHealthHost.exe
          \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
          1⤵
            PID:4544

          Network

                MITRE ATT&CK Enterprise v16

                Reconnaissance

                Resource Development

                Initial Access

                Execution

                Command and Scripting Interpreter

                1
                T1059

                Windows Command Shell

                1
                T1059.003

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Persistence

                Boot or Logon Autostart Execution

                2
                T1547

                Active Setup

                1
                T1547.014

                Winlogon Helper DLL

                1
                T1547.004

                Event Triggered Execution

                1
                T1546

                AppInit DLLs

                1
                T1546.010

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Privilege Escalation

                Boot or Logon Autostart Execution

                2
                T1547

                Active Setup

                1
                T1547.014

                Winlogon Helper DLL

                1
                T1547.004

                Event Triggered Execution

                1
                T1546

                AppInit DLLs

                1
                T1546.010

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Defense Evasion

                Modify Registry

                3
                T1112

                Credential Access

                Discovery

                Peripheral Device Discovery

                2
                T1120

                Query Registry

                3
                T1012

                System Information Discovery

                3
                T1082

                Lateral Movement

                Collection

                Command and Control

                Exfiltration

                Impact

                Replay Monitor

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                Downloads

                DiscoverCacheData.dat
                • Path C:\Users\Admin\AppData\Local\Microsoft\PenWorkspace\DiscoverCacheData.dat
                • Size 1022B
                • SHA256 c053648946561cbd132ef92a91a02ffdc4bd324721a91ae382a32684d9117565
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                start2.bin
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\LocalState\start2.bin
                • Size 3KB
                • SHA256 49445a0780442c78f390221c384be329ea87bbdd6b237e1ba1302788442813fd
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                prep_Activatable Class_Hermes_perf.cache
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
                • Size 599B
                • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                prep_Activatable Class_Hermes_perf.cache
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
                • Size 595B
                • SHA256 d4e60617c2afab8263febabe7f14f18595715078d71307a8cefe0707dae76dee
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                microsoftwindows.client[1].xml
                • Path C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\C41A1U4A\microsoftwindows.client[1].xml
                • Size 97B
                • SHA256 fb61d3f789945ea6b337ff6e5fb2914a14418c2611b6c430d47dc4c81b0e2057
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                tmp929.tmp.bat
                • Path C:\Users\Admin\AppData\Local\Temp\tmp929.tmp.bat
                • Size 213B
                • SHA256 479fb04627e5f403f4a4773445674070943dc64ddaad0fea57af4f195a4e9bfa
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                xdwd.dll
                • Path C:\Windows\xdwd.dll
                • Size 136KB
                • SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
                • MD5 SHA1 SHA512 SSDEEP TLSH
                Submit Download

                memory/200-348-0x0000000003C90000-0x0000000003C91000-memory.dmp
                Download

                memory/844-191-0x000002A006E50000-0x000002A006E70000-memory.dmp
                Download

                memory/844-178-0x000002A006BF0000-0x000002A006C10000-memory.dmp
                Download

                memory/844-161-0x000002A003990000-0x000002A003A90000-memory.dmp
                Download

                memory/844-179-0x000002A019060000-0x000002A019160000-memory.dmp
                Download

                memory/844-207-0x000002A019940000-0x000002A019960000-memory.dmp
                Download

                memory/3340-361-0x000001DD001E0000-0x000001DD002E0000-memory.dmp
                Download

                memory/3340-386-0x000001DD03A30000-0x000001DD03A50000-memory.dmp
                Download

                memory/3340-388-0x000001DD13E90000-0x000001DD13F90000-memory.dmp
                Download

                memory/3340-400-0x000001DD03C90000-0x000001DD03CB0000-memory.dmp
                Download

                memory/3340-417-0x000001DD14710000-0x000001DD14730000-memory.dmp
                Download

                memory/3340-363-0x000001DD001E0000-0x000001DD002E0000-memory.dmp
                Download

                memory/5220-1-0x0000000000360000-0x00000000003BA000-memory.dmp
                Download

                memory/5220-5-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-4-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-3-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-2-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-6-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-0-0x00007FF91322F000-0x00007FF913230000-memory.dmp
                Download

                memory/5220-40-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-159-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-7-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-130-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download

                memory/5220-8-0x00007FF9130A0000-0x00007FF913A44000-memory.dmp
                Download