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
145s -
max time network
169s -
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
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
yhhljgxudqeyowcinyde44154280653/db.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
Behavioral task
behavioral3
Sample
yhhljgxudqeyowcinyde44154280653/db/userinitUI.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral4
Sample
yhhljgxudqeyowcinyde44154280653/db/userinitUI.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
Behavioral task
behavioral5
Sample
yhhljgxudqeyowcinyde44154280653/log.ps1
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral6
Sample
yhhljgxudqeyowcinyde44154280653/log.ps1
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
Behavioral task
behavioral7
Sample
yhhljgxudqeyowcinyde44154280653/smss.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral8
Sample
yhhljgxudqeyowcinyde44154280653/smss.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
Behavioral task
behavioral9
Sample
yhhljgxudqeyowcinyde44154280653/sqlite3.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral10
Sample
yhhljgxudqeyowcinyde44154280653/sqlite3.dll
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
Behavioral task
behavioral11
Sample
yhhljgxudqeyowcinyde44154280653/userinit.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral12
Sample
yhhljgxudqeyowcinyde44154280653/userinit.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
General
-
Target
yhhljgxudqeyowcinyde44154280653/smss.exe
-
Size
872KB
-
MD5
c56b5f0201a3b3de53e561fe76912bfd
-
SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417
-
SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
-
SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c
Score
8/10
Malware Config
Signatures
-
Sets service image path in registry 2 TTPs
-
Drops file in Windows directory 6 IoCs
description ioc Process 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 File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Modifies data under HKEY_USERS 41 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\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\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\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\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed 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\Microsoft\SystemCertificates\trust\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\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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 WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\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\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople 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\CA\Certificates WaaSMedicAgent.exe -
Modifies registry class 20 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags smss.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\MRUListEx = ffffffff smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\MRUListEx = 00000000ffffffff smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 smss.exe Set value (str) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\SniffedFolderType = "Documents" smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0100000000000000ffffffff smss.exe Set value (data) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 = 14002e80922b16d365937a46956b92703aca08af0000 smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 smss.exe Set value (int) \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\NodeSlot = "2" smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 smss.exe Key created \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU smss.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1164 smss.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeShutdownPrivilege 4636 svchost.exe Token: SeCreatePagefilePrivilege 4636 svchost.exe Token: SeShutdownPrivilege 4636 svchost.exe Token: SeCreatePagefilePrivilege 4636 svchost.exe Token: SeShutdownPrivilege 4636 svchost.exe Token: SeCreatePagefilePrivilege 4636 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1164 smss.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\smss.exe"C:\Users\Admin\AppData\Local\Temp\yhhljgxudqeyowcinyde44154280653\smss.exe"1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1164
-
C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe db767b69b58e0a47b0ee97ca42a82b28 0U9bhL95tEeJs+CDFSzwcQ.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:1476
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4636