9c4807666747c9befea4427e5b9791193fdb105d53400639e8cc401d92463be2

Resubmissions

01-11-2021 12:31

211101-pp5r3ahha4 10

31-10-2021 09:03

211031-k1bwxacfaq 10

14-10-2021 01:44

211014-b6aflafeg4 10

Analysis

max time kernel
209s
max time network
362s
platform
windows11_x64
resource
win11
submitted
01-11-2021 12:31

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Report Analysis Logs

General

Target

24401ac43b6dbb7048cb27425b4f0f76a9b20b6b4fffa33ff8091c3c11ef8365.dll
Size

488KB
MD5

8c778eded8caf98e71730b164b805e1b
SHA1

8f2180d092ac3b623d2372cb01eaccde0f5e402c
SHA256

24401ac43b6dbb7048cb27425b4f0f76a9b20b6b4fffa33ff8091c3c11ef8365
SHA512

666aa5d99be4efa4a3a9c9021a116d8484e05120224c463b66246bf99f0d925a37b54c8e6902b7c7d8c7929c6748cc2ca45801525346de5bcef205a6fac33b18

Score

8^/10

persistence

Malware Config

Signatures

Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Drops file in Windows directory 8 IoCs

Processes:

TiWorker.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

WaaSMedicAgent.exeWaaSMedicAgent.exesvchost.exeWaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exesvchost.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	1440	svchost.exe
Token: SeCreatePagefilePrivilege	1440	svchost.exe
Token: SeShutdownPrivilege	1440	svchost.exe
Token: SeCreatePagefilePrivilege	1440	svchost.exe
Token: SeShutdownPrivilege	1440	svchost.exe
Token: SeCreatePagefilePrivilege	1440	svchost.exe
Token: SeShutdownPrivilege	2496	svchost.exe
Token: SeCreatePagefilePrivilege	2496	svchost.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe
Token: SeSecurityPrivilege	2792	TiWorker.exe
Token: SeBackupPrivilege	2792	TiWorker.exe
Token: SeRestorePrivilege	2792	TiWorker.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

rundll32.exesvchost.exe

description	pid	process	target process
PID 1052 wrote to memory of 3428	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 3428	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 3428	1052	rundll32.exe	rundll32.exe
PID 2496 wrote to memory of 2472	2496	svchost.exe	MoUsoCoreWorker.exe
PID 2496 wrote to memory of 2472	2496	svchost.exe	MoUsoCoreWorker.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\24401ac43b6dbb7048cb27425b4f0f76a9b20b6b4fffa33ff8091c3c11ef8365.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\24401ac43b6dbb7048cb27425b4f0f76a9b20b6b4fffa33ff8091c3c11ef8365.dll,#1
2⤵
PID:3428

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 4b7d7eccd4fe199a9ed9dd842c8556d7 9IDtXk8kpE6GjoFleu8TmQ.0.1.0.3.0
1⤵
- Modifies data under HKEY_USERS
PID:3984

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1440

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UsoSvc
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496

C:\Windows\uus\AMD64\MoUsoCoreWorker.exe
C:\Windows\uus\AMD64\MoUsoCoreWorker.exe
2⤵
PID:2472

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22000.100_none_04da31ff4c67c24a\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22000.100_none_04da31ff4c67c24a\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2792

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 4b7d7eccd4fe199a9ed9dd842c8556d7 9IDtXk8kpE6GjoFleu8TmQ.0.1.0.3.0
1⤵
- Modifies data under HKEY_USERS
PID:3084

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 4b7d7eccd4fe199a9ed9dd842c8556d7 9IDtXk8kpE6GjoFleu8TmQ.0.1.0.3.0
1⤵
- Modifies data under HKEY_USERS
PID:3720

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1440-147-0x000001E3CA020000-0x000001E3CA030000-memory.dmp

Filesize
64KB

Download
memory/1440-148-0x000001E3CA0A0000-0x000001E3CA0B0000-memory.dmp

Filesize
64KB

Download
memory/1440-149-0x000001E3CC780000-0x000001E3CC784000-memory.dmp

Filesize
16KB

Download
memory/2472-150-0x0000000000000000-mapping.dmp

Download
memory/3428-146-0x0000000000000000-mapping.dmp

Download