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
130s -
max time network
168s -
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/userinit.exe
-
Size
162KB
-
MD5
c7575c57dd0b3e1d93b98f22281120ce
-
SHA1
6742c7a8f91bc1ad06908767b1bb01302f457bd3
-
SHA256
456be13b7bfd64a3046e06e6732880d99214669bc2c0d648e4ecffd83f9f75a5
-
SHA512
7186f700db928264bd98999732df0af1e14e4015c90658302612c166469e7a19432e3f23a2516c3be1449cf7b15cd6e957b187380598ce81bb29e719be58328b
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\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\WindowsUpdate.log svchost.exe -
Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA 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\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust 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\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\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\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\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\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeShutdownPrivilege 1836 svchost.exe Token: SeCreatePagefilePrivilege 1836 svchost.exe Token: SeShutdownPrivilege 1836 svchost.exe Token: SeCreatePagefilePrivilege 1836 svchost.exe Token: SeShutdownPrivilege 1836 svchost.exe Token: SeCreatePagefilePrivilege 1836 svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\userinit.exe"C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\userinit.exe"1⤵PID:1940
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 1ab87fceb8898dab0b72dfb7fee363e3 EHtSkYWLmk6FDU4nj10Ixw.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:2760
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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:1836