Analysis
- max time kernel
146s - max time network
129s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/10/2026, 13:45
Static task
static1
Behavioral task
behavioral1
Sample
Squidward-main/Squidward.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
Squidward-main/Squidward.exe
Resource
win11ltsc2024-20260911-en
General
- Target Squidward-main/Squidward.exe
- Size 535KB
- Sample261002-q2v9tsbd62
- SHA256 2b6455abbf84755be4dcf840ebbfed9c480dced7bd74806bafee05465a5e752d
- MD5 82bf26203c5d76dfa3a591f1cb60d7b5
- SHA1 93bf418f64ec701fd0d3232a00a167d04ba9a6d2
- SHA512 6a896c274958467e18579affe68a2e0acb68ea633715920d244974765dbf577ce7558cb3dc467a69a656cb82c2f588565f71c4413b5dedc1005fba35303ed2f3
- SSDEEP 6144:yrjS60VNKrDqa3pPvX0RQ/FwiSs8k//M4zVRslxX4ci0MAM0bCrvVFs47Xeeeeen:4jST2/l3Z8O7Ss8k//XzVRUX4fnr9
- TLSH T136C4CF61A103D6E2E38D4BB46152D478152E1FE6679A160DEFC13F8B7DF12A128239CF
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 4 IoCs
pid Process 3664 MasonMBR-SLEEP.exe 1136 MasonRootkit.exe 4988 MasonGDI.exe 988 MasonGDI.exe - Drops file in System32 directory 8 IoCs
description ioc Process File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 svchost.exe File opened for modification C:\Windows\System32\Tasks\MasonMBR svchost.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\16.0\officeclicktorun.exe_Rules.xml OfficeClickToRun.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_49536AB5156BDD74EFF881D01C36A419 svchost.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506 svchost.exe File opened for modification C:\Windows\System32\CatRoot2\dberr.txt svchost.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\FB0D848F74F70BB2EAA93746D24D9749 svchost.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506 svchost.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 1000 cmd.exe - System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MasonGDI.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MasonGDI.exe - Delays execution with timeout.exe 1 IoCs
pid Process 5540 timeout.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Internet Explorer\LowRegistry\Audio\PolicyConfig\PropertyStore\7e6973e1_0 svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Internet Explorer\LowRegistry\Audio\PolicyConfig\PropertyStore\7e6973e1_0\ = "{2}.\\\\?\\hdaudio#func_01&ven_8086&dev_0022&subsys_80860022&rev_1001#{6994ad04-93ef-11d0-a3cc-00a0c9223196}\\elineouttopo/00010001|\\Device\\HarddiskVolume2\\Users\\Admin\\AppData\\Local\\Temp\\Squidward-main\\MasonGDI.exe%b{00000000-0000-0000-0000-000000000000}" svchost.exe Key created \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Internet Explorer\LowRegistry\Audio\PolicyConfig\PropertyStore\e4bfbfdf_0 svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Internet Explorer\LowRegistry\Audio\PolicyConfig\PropertyStore\e4bfbfdf_0\ = "{2}.\\\\?\\hdaudio#func_01&ven_8086&dev_0022&subsys_80860022&rev_1001#{6994ad04-93ef-11d0-a3cc-00a0c9223196}\\elineouttopo/00010001|\\Device\\HarddiskVolume2\\Users\\Admin\\AppData\\Local\\Temp\\MasonGDI.exe%b{00000000-0000-0000-0000-000000000000}" svchost.exe - Modifies data under HKEY_USERS 55 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\RulesEndpoint = "https://nexusrules.officeapps.live.com/nexus/rules?Application=officeclicktorun.exe&Version=16.0.12527.20470&ClientId={C98D5C3B-5DBC-4580-8327-91D8507AE867}&OSEnvironment=10&MsoAppId=37&AudienceName=Production&AudienceGroup=Production&AppVersion=16.0.12527.20470&" OfficeClickToRun.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor OfficeClickToRun.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\CA svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\SmartCardRoot svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\trust svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Disallowed\Certificates svchost.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesLastModified\officeclicktorun.exe_queried = "1790948783" OfficeClickToRun.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor\ULSCategoriesSeverities = "1329 10,940 10,941 10,942 10,943 10,940 15,1329 15,940 6,944 50,944 10,941 15,942 15,940 50,943 15,944 6,944 15,943 6,1329 50,1329 100,1329 6,941 6,942 6,944 100,940 100" OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\CA svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\CA\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\CA\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Root\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\trust\Certificates svchost.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesLastModified\officeclicktorun.exe = "Wed, 30 Sep 2026 10:35:21 GMT" OfficeClickToRun.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\CA\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Root\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\trust\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\CA\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust\CTLs svchost.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor OfficeClickToRun.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe OfficeClickToRun.exe Key deleted \REGISTRY\USER\.DEFAULT\SOFTWARE\MICROSOFT\OFFICE\16.0\COMMON\CLIENTTELEMETRY\RULESMETADATA\OFFICECLICKTORUN.EXE\ULSMONITOR OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\CA\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Disallowed svchost.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0 OfficeClickToRun.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Root svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\trust\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Disallowed\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Disallowed\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust\CRLs svchost.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe OfficeClickToRun.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor\ULSTagIds0 = "17110992,504928405,41816131,507286179,7202265,17110988,7153487,504928410,577889346,5804129,17962391,508368333,17962392,41484365,24262478,9179409,3462423,3702920,3700754,3965062,24262474,4297094,7153421,3462365,18716193,7153435,24262477,25036127,24262473,9179410,20502174,6308191,18407617,39125643,539756558,6104718,9179411,51475283,41185282,39389248,539756557,528570079,7202269" OfficeClickToRun.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\CA\CRLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\Root\CTLs svchost.exe Key created \REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\TrustedPeople svchost.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\NotificationData explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\NotificationData\0D83063EA3B8FCF5 = 0100000000000002 explorer.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2260 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe 1136 MasonRootkit.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4920 explorer.exe - Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 1136 MasonRootkit.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: 33 1756 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1756 AUDIODG.EXE Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe Token: SeShutdownPrivilege 4920 explorer.exe Token: SeCreatePagefilePrivilege 4920 explorer.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4912 Conhost.exe 4624 Conhost.exe - Suspicious use of UnmapMainImage 1 TTPs 1 IoCs
pid Process 4920 explorer.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2504 wrote to memory of 3664 2504 Squidward.exe 89 PID 2504 wrote to memory of 1136 2504 Squidward.exe 90 PID 1136 wrote to memory of 740 1136 MasonRootkit.exe 5 PID 1136 wrote to memory of 960 1136 MasonRootkit.exe 9 PID 1136 wrote to memory of 968 1136 MasonRootkit.exe 10 PID 1136 wrote to memory of 980 1136 MasonRootkit.exe 11 PID 1136 wrote to memory of 1028 1136 MasonRootkit.exe 13 PID 1136 wrote to memory of 1164 1136 MasonRootkit.exe 14 PID 1136 wrote to memory of 1236 1136 MasonRootkit.exe 15 PID 1136 wrote to memory of 1268 1136 MasonRootkit.exe 16 PID 1136 wrote to memory of 1324 1136 MasonRootkit.exe 17 PID 1136 wrote to memory of 1376 1136 MasonRootkit.exe 18 PID 1136 wrote to memory of 1472 1136 MasonRootkit.exe 20 PID 1136 wrote to memory of 1488 1136 MasonRootkit.exe 21 PID 1136 wrote to memory of 1596 1136 MasonRootkit.exe 22 PID 1136 wrote to memory of 1612 1136 MasonRootkit.exe 23 PID 1136 wrote to memory of 1672 1136 MasonRootkit.exe 24 PID 1136 wrote to memory of 1708 1136 MasonRootkit.exe 25 PID 1136 wrote to memory of 1728 1136 MasonRootkit.exe 26 PID 1136 wrote to memory of 1864 1136 MasonRootkit.exe 27 PID 1136 wrote to memory of 2040 1136 MasonRootkit.exe 29 PID 1136 wrote to memory of 1344 1136 MasonRootkit.exe 30 PID 1136 wrote to memory of 1624 1136 MasonRootkit.exe 31 PID 1136 wrote to memory of 2184 1136 MasonRootkit.exe 32 PID 1136 wrote to memory of 2212 1136 MasonRootkit.exe 33 PID 1136 wrote to memory of 2268 1136 MasonRootkit.exe 34 PID 1136 wrote to memory of 2388 1136 MasonRootkit.exe 35 PID 1136 wrote to memory of 2428 1136 MasonRootkit.exe 36 PID 1136 wrote to memory of 2536 1136 MasonRootkit.exe 37 PID 1136 wrote to memory of 2608 1136 MasonRootkit.exe 38 PID 1136 wrote to memory of 2628 1136 MasonRootkit.exe 39 PID 1136 wrote to memory of 2756 1136 MasonRootkit.exe 40 PID 1136 wrote to memory of 2768 1136 MasonRootkit.exe 41 PID 1136 wrote to memory of 2784 1136 MasonRootkit.exe 42 PID 1136 wrote to memory of 2964 1136 MasonRootkit.exe 43 PID 1136 wrote to memory of 716 1136 MasonRootkit.exe 44 PID 1136 wrote to memory of 2576 1136 MasonRootkit.exe 45 PID 1136 wrote to memory of 3120 1136 MasonRootkit.exe 47 PID 1136 wrote to memory of 3160 1136 MasonRootkit.exe 48 PID 1136 wrote to memory of 3464 1136 MasonRootkit.exe 50 PID 1136 wrote to memory of 3568 1136 MasonRootkit.exe 51 PID 1136 wrote to memory of 3608 1136 MasonRootkit.exe 52 PID 1136 wrote to memory of 3632 1136 MasonRootkit.exe 53 PID 1136 wrote to memory of 3640 1136 MasonRootkit.exe 54 PID 1136 wrote to memory of 3656 1136 MasonRootkit.exe 55 PID 1136 wrote to memory of 3668 1136 MasonRootkit.exe 56 PID 1136 wrote to memory of 3224 1136 MasonRootkit.exe 57 PID 1136 wrote to memory of 1252 1136 MasonRootkit.exe 58 PID 1136 wrote to memory of 4388 1136 MasonRootkit.exe 59 PID 1136 wrote to memory of 4444 1136 MasonRootkit.exe 60 PID 1136 wrote to memory of 4488 1136 MasonRootkit.exe 61 PID 1136 wrote to memory of 4720 1136 MasonRootkit.exe 62 PID 1136 wrote to memory of 4772 1136 MasonRootkit.exe 63 PID 1136 wrote to memory of 1288 1136 MasonRootkit.exe 64 PID 1136 wrote to memory of 5140 1136 MasonRootkit.exe 65 PID 1136 wrote to memory of 5300 1136 MasonRootkit.exe 67 PID 1136 wrote to memory of 5456 1136 MasonRootkit.exe 68 PID 1136 wrote to memory of 3452 1136 MasonRootkit.exe 72 PID 1136 wrote to memory of 6020 1136 MasonRootkit.exe 73 PID 1136 wrote to memory of 1720 1136 MasonRootkit.exe 74 PID 1136 wrote to memory of 4788 1136 MasonRootkit.exe 77 PID 1136 wrote to memory of 3688 1136 MasonRootkit.exe 78 PID 1136 wrote to memory of 5852 1136 MasonRootkit.exe 79 PID 1136 wrote to memory of 3980 1136 MasonRootkit.exe 80 - 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.
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:740
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"2⤵PID:960
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C:\Windows\system32\dwm.exe"dwm.exe"2⤵PID:1164
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵PID:968
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C:\Windows\System32\WUDFHost.exe"C:\Windows\System32\WUDFHost.exe" -HostGUID:{193a1820-d9ac-4997-8c55-be817523f6aa} -IoEventPortName:\UMDFCommunicationPorts\WUDF\HostProcess-71f6aef5-8e8f-418d-9249-73159d11d61e -SystemEventPortName:\UMDFCommunicationPorts\WUDF\HostProcess-fd748aef-bc16-4192-bbc5-3619099c7ec2 -IoCancelEventPortName:\UMDFCommunicationPorts\WUDF\HostProcess-3baad3df-6319-4682-a935-02d5d42a292d -NonStateChangingEventPortName:\UMDFCommunicationPorts\WUDF\HostProcess-cb7a96a1-fa7e-46a5-b6bf-40b7ef52f1e9 -LifetimeId:ce04c691-50e5-4d91-b94e-02819a0d2eaa -DeviceGroupId:WudfDefaultDevicePool -HostArg:01⤵PID:980
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵PID:1028
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵PID:1236
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵PID:1268
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵PID:1324
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:1376
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DisplayEnhancementService1⤵PID:1472
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s nsi1⤵PID:1488
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵
- Drops file in System32 directory
PID:1596
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1612
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netprofm -p -s netprofm1⤵PID:1672
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UserProfileService -p -s ProfSvc1⤵PID:1708
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc1⤵PID:1728
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵PID:1864
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager1⤵PID:2040
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C:\Windows\system32\sihost.exesihost.exe2⤵PID:3980
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS3⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:4920 -
C:\Users\Admin\AppData\Local\Temp\Squidward-main\Squidward.exe"C:\Users\Admin\AppData\Local\Temp\Squidward-main\Squidward.exe"4⤵
- Suspicious use of WriteProcessMemory
PID:2504 -
C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonMBR-SLEEP.exe"C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonMBR-SLEEP.exe"5⤵
- Executes dropped EXE
PID:3664 -
C:\Users\Admin\AppData\Local\Temp\MasonGDI.exe"C:\Users\Admin\AppData\Local\Temp\MasonGDI.exe"6⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:988
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C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonRootkit.exe"C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonRootkit.exe"5⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1136
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C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonGDI.exe"C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonGDI.exe"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4988
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /F /TN "MasonMBR" /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\Squidward-main\\MasonMBR.exe" /RL HIGHEST5⤵
- Scheduled Task/Job: Scheduled Task
PID:2260 -
C:\Windows\System32\Conhost.exe\??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV16⤵
- Suspicious use of SetWindowsHookEx
PID:4912
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE3EE.tmp.bat""5⤵
- Executes a command shell one-liner
PID:1000 -
C:\Windows\System32\Conhost.exe\??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV16⤵PID:3516
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C:\Windows\system32\timeout.exetimeout 36⤵
- Delays execution with timeout.exe
PID:5540
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem1⤵PID:1344
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s Themes1⤵PID:1624
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p1⤵PID:2184
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s SENS1⤵PID:2212
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder1⤵PID:2268
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp1⤵PID:2388
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵
- Modifies Internet Explorer settings
PID:2428 -
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004F0 0x00000000000004F82⤵
- Suspicious use of AdjustPrivilegeToken
PID:1756
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc1⤵
- Modifies data under HKEY_USERS
PID:2536
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TextInputManagementService1⤵PID:2608
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C:\Windows\system32\ctfmon.exe/QuitInfo:0000000000000218;00000000000001FC;2⤵PID:5456
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc1⤵PID:2628
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s DusmSvc1⤵PID:2756
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Wcmsvc1⤵PID:2768
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository1⤵PID:2784
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection1⤵PID:2964
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C:\Windows\System32\spoolsv.exeC:\Windows\System32\spoolsv.exe1⤵PID:716
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵PID:2576
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation1⤵PID:3120
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s webthreatdefusersvc1⤵PID:3160
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C:\Windows\System32\ShellHost.exe"C:\Windows\System32\ShellHost.exe"1⤵PID:3464
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT1⤵PID:3568
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer1⤵PID:3608
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks1⤵PID:3632
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt1⤵PID:3640
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent1⤵PID:3656
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService1⤵PID:3668
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵PID:3224
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Appinfo1⤵PID:1252
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵PID:4388
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵PID:4444
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UdkSvcGroup -s UdkUserSvc1⤵PID:4488
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k osprivacy -p -s camsvc1⤵PID:4720
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵PID:4772
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{973D20D7-562D-44B9-B70B-5A0F49CCDF3F}1⤵PID:1288
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C:\Windows\System32\SecurityHealthSystray.exe"C:\Windows\System32\SecurityHealthSystray.exe"1⤵PID:5140
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k WebThreatDefense -p -s webthreatdefsvc1⤵PID:5300
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s DeviceInstall1⤵PID:3452
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc1⤵PID:6020
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc1⤵PID:1720
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager1⤵PID:4788
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C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:3688
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C:\Windows\System32\smartscreen.exeC:\Windows\System32\smartscreen.exe -Embedding1⤵PID:5852
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc1⤵PID:2376
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C:\Windows\System32\Conhost.exe\??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV11⤵
- Suspicious use of SetWindowsHookEx
PID:4624
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Process Injection
1Process Hollowing
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonGDI.exe
- Size 61KB
- SHA256 57eff2792a929b479b3e3bb9a25bbe750034dcba4213e2abb8865ff2268b53f6
- MD5 2f9823efd49a6f8fc32ba52d75e620a4
- SHA1 39f79bc2bba2f33f2e82da2dee4c8cf3be052b7e
- SHA512 2f68ddb1d7d070f7d8675791f8ccc3b9d73236834f1bc787afdf1074d4d17601f77e53a98024a12e29119c5c38333cd7f6200a186e2ba96fc4186c86ca2cb6ad
- SSDEEP 1536:PTynnng4PEIGZ5eqIXzgmYi/ZuPiDNG9j3+aOPw1WX6CjV9nu:9OFGfeZgmJ8POoOu1WX6CjS
- TLSH T13653F186E3B8C421D0F71333AD67E99413F5EAD69D56CA1F0A80935B6ED23464F21E1C
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonMBR-SLEEP.exe
- Size 65KB
- SHA256 de93250a0f249700407cd893e1b4d6b167c5e909b4b8f09cbefbbae473f4ad93
- MD5 f006d2343d121bd2043925e87063fde7
- SHA1 402799473ca52edb826a37e0042456032db121f3
- SHA512 707c803508308fa0d002aa31187476cf1b000118f9b0d89982ab60a674de09f028ae860c3dbdad9fa902ee4e9d0771f8fa79e356bb2ae8bf4f2c57d61f3e68e0
- SSDEEP 1536:ToHs+RMT9qQPhcm7V0vppY62kxt+nl5Hr1lo/u:MHssMT9qQPSmyvB2cKl5L3P
- TLSH T1FC63F1129FE8026AC35F47B25DE573910F2ADE44DE06775F809182A18F49AC88773B77
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\Squidward-main\MasonRootkit.exe
- Size 161KB
- SHA256 879cc20b41635709bb304e315aaa5ca4708b480a1bfc2f4935fcf2215188efb0
- MD5 94f1ab3a068f83b32639579ec9c5d025
- SHA1 38f3d5bc5de46feb8de093d11329766b8e2054ae
- SHA512 44d5236a804d63302b21ca25ebc148a64605508d03c990a244c44ceb8630849da0510b7b2d0bee72e01ca6681e2d86d7e6aee8847674a26f0028d149b9abee0c
- SSDEEP 3072:hLD8KbgVtn8Mo8G1gVziHzZbIK1YKB/pCAcNqXhwBV3yxSQig8xN:h/5bTgVziHzZnSKrCbYM
- TLSH T10BF33C07BAA500F7E976823585739E17B7B2F42503209BBF0B654A6E0FA37906D3DB50
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmpA7E5.tmp
- Size 873KB
- SHA256 6a1e08d3a6759f42ea2480450bdf1f369bf50236ba1dc94cfddbf02b5dd7ecaa
- MD5 7bfe4475c45768860615d6cdc19dc622
- SHA1 d937f02f743833748dbc391211602c28f0eaca8f
- SHA512 64bb4d4ebc82a7509ded16677592dacb862bfbdbb9c06a871f7d051aa7a5c67c5a5358ddd3f44ca7922fd3f406a784c768737dddafc49075f496452b96597681
- SSDEEP 1536:qnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns:D
- TLSH T175150FF06479EE53F39685397920FD2846D03499AAF3493A707DF9C8A373B60285C61B
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmpE3EE.tmp.bat
- Size 176B
- SHA256 12afe884b77e0d2c4b14bee992a95d6dc71f5713b3b55eb56843ef7256ff3f2a
- MD5 5092ab48e026195378fcbbc568a40833
- SHA1 3b16c1b2ba0455ac7627c4d466a81070f733778a
- SHA512 149f5e6ead0715fc0e6f43c0251de431e74c16b28ab0f8613ed734cad9b6a6c25f40277318138c5fff29b35de515d1c92a562c59f53ef7b608cbc22d877cbfa5
- TLSH T152C0801114C7F77F154564171175D14DC0625C0B3E467B50D35C800465804BDF4B9709
- MD5 SHA1 SHA512 TLSH
- Path C:\Windows\System32\Tasks\MasonMBR
- Size 3KB
- SHA256 3e44ee54a338ff1fb0420be3609489273f420689f9e244c4a2da7281ce3e2d8f
- MD5 dbb58326c67168359f32dd95e8ae4dfd
- SHA1 77f5ee94ac88afeb7cd4ee56ed47a1c7b40cccd6
- SHA512 f1f2a4a37743f3f15fa8034fccae342cacea6e03eac1174d7814feda5825c98cfff59b12553c3ce3a8cb428470edae767c4de9f0f22dae5eb1f663c4c55572bb
- TLSH T1FD61685767EE1109F2F76B2CAEB754228E67BD515938C46D00AC240DCBF3E2285607B7
- MD5 SHA1 SHA512 TLSH
- Path C:\Windows\System32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
- Size 342B
- SHA256 ae883bb9328ae3dd0aa0106f64645552dbecce2fa610d6f6e41ad690c996b712
- MD5 cc9773ab9f9278a4274468db410df230
- SHA1 d6464a0c2e7a30d7cf19dbaa97098b4021d137ff
- SHA512 e4333ca2808edc439eb185b1455a2d46116acdc649abe66efbfe34539be3c84bb9d650f35b99580ce070b718dbcd062096efc6d6f1907037fd4f73113fa9c287
- TLSH T1DFE08C123AE80304E63B0A3C6933A449593A776BEF01DA9D0735049E1C38FA1D93B61D
- MD5 SHA1 SHA512 TLSH