Overview
overview
10Static
static
yhhljgxudq...db.dll
windows7_x64
1yhhljgxudq...db.dll
windows10-2004_x64
8yhhljgxudq...UI.dll
windows7_x64
1yhhljgxudq...UI.dll
windows10-2004_x64
8yhhljgxudq...og.ps1
windows7_x64
1yhhljgxudq...og.ps1
windows10-2004_x64
1yhhljgxudq...ss.exe
windows7_x64
3yhhljgxudq...ss.exe
windows10-2004_x64
8yhhljgxudq...e3.dll
windows7_x64
3yhhljgxudq...e3.dll
windows10-2004_x64
10yhhljgxudq...it.exe
windows7_x64
1yhhljgxudq...it.exe
windows10-2004_x64
8Analysis
-
max time kernel
125s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
01-02-2022 20:24
Static task
static1
Behavioral task
behavioral1
Sample
yhhljgxudqeyowcinyde44154280653/db.dll
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral2
Sample
yhhljgxudqeyowcinyde44154280653/db.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
Behavioral task
behavioral3
Sample
yhhljgxudqeyowcinyde44154280653/db/userinitUI.dll
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral4
Sample
yhhljgxudqeyowcinyde44154280653/db/userinitUI.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
Behavioral task
behavioral5
Sample
yhhljgxudqeyowcinyde44154280653/log.ps1
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral6
Sample
yhhljgxudqeyowcinyde44154280653/log.ps1
Resource
win10v2004-en-20220113
windows10-2004_x64
Behavioral task
behavioral7
Sample
yhhljgxudqeyowcinyde44154280653/smss.exe
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral8
Sample
yhhljgxudqeyowcinyde44154280653/smss.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
Behavioral task
behavioral9
Sample
yhhljgxudqeyowcinyde44154280653/sqlite3.dll
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral10
Sample
yhhljgxudqeyowcinyde44154280653/sqlite3.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
Behavioral task
behavioral11
Sample
yhhljgxudqeyowcinyde44154280653/userinit.exe
Resource
win7-en-20211208
windows7_x64
Behavioral task
behavioral12
Sample
yhhljgxudqeyowcinyde44154280653/userinit.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
General
-
Target
yhhljgxudqeyowcinyde44154280653/db/userinitUI.dll
-
Size
15KB
-
MD5
c6640126032a4ddcdaadf264b6b9b961
-
SHA1
ce6be849ec4bd62743dc48a3b2d47373a078ee2b
-
SHA256
e049855b8561c9f68889113362cbed470649db2575ee804e28474d1ee65827de
-
SHA512
2e8675451dc87d2d80294df791c0ddd7978d9204a4062da1694ead183ad0fcdb28eeea1f8a4b11606892ce740758ea821d7025751ac93dd0224697afbc12bb30
Malware Config
Signatures
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Sets service image path in registry 2 TTPs
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Drops file in Windows directory 6 IoCs
description ioc Process 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\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 -
Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates 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\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe 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 WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeShutdownPrivilege 4328 svchost.exe Token: SeCreatePagefilePrivilege 4328 svchost.exe Token: SeShutdownPrivilege 4328 svchost.exe Token: SeCreatePagefilePrivilege 4328 svchost.exe Token: SeShutdownPrivilege 4328 svchost.exe Token: SeCreatePagefilePrivilege 4328 svchost.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\db\userinitUI.dll,#11⤵PID:4752
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe c364b19c51c9c6e1525e047b7be84953 Z6J1tJw5akqPxBq4QgSssQ.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:4980
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4328