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
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max time kernel
105s -
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
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Target
yhhljgxudqeyowcinyde44154280653/sqlite3.dll
-
Size
910KB
-
MD5
def2572ccae7f518bd9d30f37b2fed04
-
SHA1
eaec1754a69c50eac99e774b07ef156a1ca6de06
-
SHA256
b712286d4d36c74fa32127f848b79cfb857fdc2b1c84bbbee285cf34752443a2
-
SHA512
f6183e6b7989cfc342f28074e0c79223765a5995e04e5e1e9d2c6edd12837bf5a825a0800f2941c3c7eedc37258052fd72fd7f1421d88c426666a30b4436aa4a
Malware Config
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
description pid Process procid_target PID 2992 created 4628 2992 WerFault.exe 82 -
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\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 -
Program crash 1 IoCs
pid pid_target Process procid_target 2740 4628 WerFault.exe 82 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WerFault.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WerFault.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WerFault.exe -
Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates 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\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\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\CTLs 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\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust 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\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates 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 WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2740 WerFault.exe 2740 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeRestorePrivilege 2740 WerFault.exe Token: SeBackupPrivilege 2740 WerFault.exe Token: SeShutdownPrivilege 2728 svchost.exe Token: SeCreatePagefilePrivilege 2728 svchost.exe Token: SeShutdownPrivilege 2728 svchost.exe Token: SeCreatePagefilePrivilege 2728 svchost.exe Token: SeShutdownPrivilege 2728 svchost.exe Token: SeCreatePagefilePrivilege 2728 svchost.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 3852 wrote to memory of 4628 3852 rundll32.exe 82 PID 3852 wrote to memory of 4628 3852 rundll32.exe 82 PID 3852 wrote to memory of 4628 3852 rundll32.exe 82 PID 2992 wrote to memory of 4628 2992 WerFault.exe 82 PID 2992 wrote to memory of 4628 2992 WerFault.exe 82
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\sqlite3.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3852 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\sqlite3.dll,#12⤵PID:4628
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 6003⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2740
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4628 -ip 46281⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2992
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 4c14b68dd15cdaf2e777fcb1b3a039fc XUKIHa4KP0WdUtg8yf/lTA.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:4824
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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:2728