b496a0eeae13cb057070b7b81fa4940e36f3830272bf68f4138d3f32847c659d

Analysis

user interaction
yes
max time kernel
485s
max time network
569s
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, 20:18

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General

Target
Yammi_Setupx64 (1).exe
Size 239.7MB
Sample261002-y3mcbatves
SHA256 b496a0eeae13cb057070b7b81fa4940e36f3830272bf68f4138d3f32847c659d
MD5 79f2c587f869c65576bcb1f3a19d8997
SHA1 aa90d4c39f0c78d981783299f2db3fe130c67ca5
SHA512 72c59af8d33a4d61f41d3988de96a60f7695f8706adcd810610ccff4c1d6560f70508eb07836a3b954f328d1f27c86b248934f713db5665af4a6e6ed71b91c07
SSDEEP 6291456:MAdI3gz1Ihuww0SSDM5BLKef1158ttOFEV0jxx:Mz3I0SSorKeliCO0jxx
TLSH
T11EC83347F1A801DCD4BBC1B885674A27EBB13455237462EB26A48A292F33FE56F7D310
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

adware persistence ransomware spyware

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

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

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Loads dropped DLL 3 IoCs

pid	Process
2060	Yammi_Setupx64 (1).exe
2060	Yammi_Setupx64 (1).exe
2060	Yammi_Setupx64 (1).exe

Enumerates connected drives 3 TTPs 4 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
	\??\E:\	explorer.exe
File opened (read-only)	\??\E:	explorer.exe
File opened (read-only)	\??\F:	explorer.exe
	\??\F:\	explorer.exe

Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\HardwareID	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}\0011	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{78c34fc8-104a-4aca-9ea4-524d52996e57}\005A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0004	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_HL-DT-ST_DVD+-RW\4&215468A5&0&010000	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\ConfigFlags	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\007A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0002	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0002	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\UpperFilters	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\FriendlyName	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{259abffc-50a7-47ce-af08-68c9a7d73366}\000C	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\HardwareID	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\HardwareID	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0003	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\FriendlyName	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{259abffc-50a7-47ce-af08-68c9a7d73366}\000C	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Capabilities	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0002	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\007A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\007A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{78c34fc8-104a-4aca-9ea4-524d52996e57}\005A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Capabilities	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0009	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0004	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}\0011	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\UpperFilters	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0009	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\FriendlyName	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Capabilities	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{afd97640-86a3-4210-b67c-289c41aabe55}\0003	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0002	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{78c34fc8-104a-4aca-9ea4-524d52996e57}\005A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\HardwareID	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\007A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0004	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{259abffc-50a7-47ce-af08-68c9a7d73366}\000C	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{78c34fc8-104a-4aca-9ea4-524d52996e57}\005A	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{51236583-0c4a-4fe8-b81f-166aec13f510}\0064	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0009	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{cf73bb51-3abf-44a2-85e0-9a3dc7a12132}\0006	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Capabilities	explorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\ConfigFlags	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{8c7ed206-3f8a-4827-b3ab-ae9e1faefc6c}\0004	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{259abffc-50a7-47ce-af08-68c9a7d73366}\000C	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0009	explorer.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Internet Explorer\Main	explorer.exe

Modifies registry class 38 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.startmenuexperiencehost_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	StartMenuExperienceHost.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1404337215-1550464601-2805570857-1000\{8121A865-8B8B-4FC1-9041-A42F72B64717}	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\client.cbs\Total = "23"	SearchHost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A0953C92-50DC-43bf-BE83-3742FED03C9C}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoftwindows.client.cbs	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1CF1260C-4DD0-4ebb-811F-33C572699FDE}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\client.cbs	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\Total	SearchHost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{374DE290-123F-4565-9164-39C4925E467B}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{3ADD1653-EB32-4cb0-BBD7-DFA0ABB5ACCA}\Instance\	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage	SearchHost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total\ = "23"	SearchHost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoftwindows.client.cbs\ = "56"	SearchHost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\client.cbs\Total = "56"	SearchHost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1404337215-1550464601-2805570857-1000\{646408A0-2455-4B62-939A-A1D38FC03BF4}	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\MuiCache	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\EdpDomStorage	SearchHost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total\ = "56"	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\client.cbs	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\Total	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	SearchHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	SearchHost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DOMStorage\microsoftwindows.client.cbs\ = "23"	SearchHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.startmenuexperiencehost_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	StartMenuExperienceHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\MuiCache	StartMenuExperienceHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\DomStorageState	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Explorer\EdpDomStorage\microsoftwindows.client.cbs	SearchHost.exe
Key created	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.startmenuexperiencehost_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	StartMenuExperienceHost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4872	explorer.exe
4872	explorer.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2060	Yammi_Setupx64 (1).exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe
Token: SeShutdownPrivilege	4872	explorer.exe
Token: SeCreatePagefilePrivilege	4872	explorer.exe

Suspicious use of FindShellTrayWindow 54 IoCs

pid	Process
3228	sihost.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe

Suspicious use of SendNotifyMessage 43 IoCs

pid	Process
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe
4872	explorer.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4300	StartMenuExperienceHost.exe
5524	SearchHost.exe
4872	explorer.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 4872	3228	sihost.exe	101

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

Query Registry
T1012
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

C:\Users\Admin\AppData\Local\Temp\Yammi_Setupx64 (1).exe
"C:\Users\Admin\AppData\Local\Temp\Yammi_Setupx64 (1).exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:2060

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:2920

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3228
- 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 AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:4872

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:5524

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:4300

C:\Windows\System32\SecurityHealthHost.exe
\\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
1⤵
PID:2856

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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 658ab8c32d4cc5deb36ac5f63da4658b
SHA1 30c12cd871ff0c2c4098d794e9ae4f2540586813
SHA512 a73030c008ef3c2e274f11c90bfe79fa8ae402f76801c710bed8cc1ab1218a84858ea566b772be4bade8ef639a019c57d297028df15b64b3753482cf0f3c8f85
TLSH
T12AF05C83EB6A1B72C456123DC8EE56E47B31D1846EC11367A2107B1D3C2B7192D174BD
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 607B
SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
MD5 76b78ed7ff6273215b134d6a6488035d
SHA1 9e7a11ffb68d027036302eccd4c22315054843a9
SHA512 9919504cd4d8c0757abff8da4bbad1c4b6532f81d290c736fc5624ef66de45e6a9e29a8290854ae554d5bdfc5291f1ea81ae62d1b25846bfbcf1515e2ec3e4f1
TLSH
T174F0DC53CBD6536BD527223CC8E207E1FA70E2719E81212386106F2D6CB77241E474B4
MD5 SHA1 SHA512 TLSH

Submit Download

D3DCompiler_47_cor3.dll

Path C:\Users\Admin\AppData\Local\Temp\.net\Yammi_Setupx64 (1)\fRS1CIRw1AsV\D3DCompiler_47_cor3.dll
Size 4.5MB
SHA256 a05f99734f7c4822fefc12b367af21fd0976ed6608752fb1e1e80b6ece7ecbbb
MD5 19e527a35241c171d37dc1e6c530053c
SHA1 b1567bada7a27ab78e65da440f21809f50b9d34c
SHA512 23d38b55f5b17bf0228b16a85787d384da0a700190fc289281190272a0d2dd374be0f7f64d8b642836ccbe2351b72e9ef5c7e2b12d0a7495317e986fd5e3c886
SSDEEP 49152:c6ntbdeqBH287v7cavvL4e0OgcmeNHyxsBSoYHXahOO5uBcLr7mbpJ3E/V:cUdeqt737jFm5wd
TLSH
T143268D56A7E840E9D1BBD138DA87821BEBF1B80413349BDF015086599F73BD26A3E734
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

PresentationNative_cor3.dll

Path C:\Users\Admin\AppData\Local\Temp\.net\Yammi_Setupx64 (1)\fRS1CIRw1AsV\PresentationNative_cor3.dll
Size 1.2MB
SHA256 0002f81ee5c803cb90329f2ab08556fd6de29d1ddd6d83446d1d4c19748f25e8
MD5 5abba52442f893f51903867a984309a8
SHA1 935e25fd68702de5b41ffdbd89be7c74e0a35d98
SHA512 63791cb693e4abda219c6f0df951c3b91e8dbc19bf2fb2caec091fa62bca8d91044cba77979e9a690138354676e7cea1a3a320b38b06ab0366d6830092455a99
SSDEEP 24576:agaltAn1r1sE33slrVCP0QSeDOM8zT3n6kcNbNUdah6ox3GmOBlIefATbpwwPnFR:rnR+g8lYP00OM8zT3GbNUdvoxWZBlIue
TLSH
T163453A22E2E642E5C47FC1B8C6469717FBB1740A131C66DB87608B652F27FE0963E364
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wpfgfx_cor3.dll

Path C:\Users\Admin\AppData\Local\Temp\.net\Yammi_Setupx64 (1)\fRS1CIRw1AsV\wpfgfx_cor3.dll
Size 1.9MB
SHA256 f4f7a44a3480c0b7b2d5a603cb7d0c41d9ae9b2633a8b30eb59f66a2697045f3
MD5 4f41b8b32bc1c99e81ef00e0f091ac15
SHA1 e06f63d95920b72e98829b050362f424d342ab7c
SHA512 ee8b2966ddc2e0abe3d8762cb5d2dffde61b5ae1bc7410f80297155e41a28914f172db47d769d0f819c331430c075db183de704347ef49a8974b2b30c3d5ea55
SSDEEP 24576:RTNVE8rGhmlApTw21LLP9SPsgV32H+Gjq8hfzjx42iSa1j7sPek6Q6e8VwrMw:xq8mTw2l9SPsimjT7j/iSaF7sP8IX
TLSH
T182954A46B6FC40E9D46AD23CD9DB861BF27178102761A7CF23A4479DAF27BD0097A360
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2060-62-0x0000027CC11A0000-0x0000027CC11C0000-memory.dmp

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memory/2060-105-0x0000027C96A40000-0x0000027C96A90000-memory.dmp

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memory/2060-10-0x0000027C92960000-0x0000027C93880000-memory.dmp

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memory/2060-43-0x0000027CBFED0000-0x0000027CBFF50000-memory.dmp

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memory/2060-66-0x0000027CC1230000-0x0000027CC1260000-memory.dmp

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memory/2060-70-0x0000027CC11E0000-0x0000027CC1200000-memory.dmp

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memory/2060-6-0x0000027CB3800000-0x0000027CB4750000-memory.dmp

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memory/2060-58-0x0000027CC1160000-0x0000027CC1180000-memory.dmp

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memory/2060-50-0x0000027CB2880000-0x0000027CB28A0000-memory.dmp

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memory/2060-38-0x0000027CB20B0000-0x0000027CB20D0000-memory.dmp

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memory/2060-54-0x0000027CBFFA0000-0x0000027CBFFC0000-memory.dmp

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memory/2060-46-0x0000027CB2100000-0x0000027CB2110000-memory.dmp

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memory/2060-18-0x0000027CBFC90000-0x0000027CBFDF0000-memory.dmp

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memory/2060-81-0x0000027CC1310000-0x0000027CC1360000-memory.dmp

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memory/2060-87-0x0000027C972D0000-0x0000027C97A40000-memory.dmp

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memory/2060-89-0x0000027C96860000-0x0000027C96890000-memory.dmp

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memory/2060-77-0x0000027C96710000-0x0000027C96810000-memory.dmp

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memory/2060-93-0x0000027C968A0000-0x0000027C968C0000-memory.dmp

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memory/2060-112-0x0000027C96A90000-0x0000027C96B50000-memory.dmp

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memory/2060-117-0x0000027C98940000-0x0000027C98970000-memory.dmp

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memory/2060-113-0x0000027C98900000-0x0000027C98920000-memory.dmp

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memory/2060-14-0x0000027CBF910000-0x0000027CBFB30000-memory.dmp

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memory/2060-101-0x0000027C96930000-0x0000027C96940000-memory.dmp

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memory/2060-97-0x0000027C968E0000-0x0000027C96900000-memory.dmp

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memory/2060-121-0x0000027C98A40000-0x0000027C98AA0000-memory.dmp

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memory/2060-125-0x0000027C98AE0000-0x0000027C98B20000-memory.dmp

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memory/2060-129-0x0000027C969C0000-0x0000027C969D0000-memory.dmp

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memory/2060-22-0x0000027CB2160000-0x0000027CB21B0000-memory.dmp

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memory/2060-26-0x0000027CBFDF0000-0x0000027CBFE30000-memory.dmp

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memory/2060-138-0x0000027C990A0000-0x0000027C99150000-memory.dmp

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memory/2060-142-0x0000027C991C0000-0x0000027C99230000-memory.dmp

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memory/2060-146-0x0000027C96950000-0x0000027C96960000-memory.dmp

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memory/2060-150-0x0000027C98FA0000-0x0000027C98FB0000-memory.dmp

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memory/2060-30-0x0000027CBFE80000-0x0000027CBFED0000-memory.dmp

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memory/2060-34-0x0000027C94070000-0x0000027C94860000-memory.dmp

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memory/4872-333-0x000000000E2B0000-0x000000000E300000-memory.dmp

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memory/5524-183-0x0000023A81DE0000-0x0000023A81EE0000-memory.dmp

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memory/5524-157-0x0000023A801E0000-0x0000023A802E0000-memory.dmp

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memory/5524-202-0x0000023A941A0000-0x0000023A941C0000-memory.dmp

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memory/5524-188-0x0000023A81D00000-0x0000023A81D20000-memory.dmp

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memory/5524-182-0x0000023A819C0000-0x0000023A819E0000-memory.dmp

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memory/5524-156-0x0000023A801E0000-0x0000023A802E0000-memory.dmp

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