Analysis Overview
SHA256
4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9
Threat Level: Known bad
The file 4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe was found to be: Known bad.
Malicious Activity Summary
Dcrat family
Process spawned unexpected child process
DcRat
DCRat payload
DCRat payload
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Drops file in Program Files directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Uses Task Scheduler COM API
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-18 16:52
Signatures
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Dcrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-18 16:52
Reported
2024-06-18 16:54
Platform
win7-20240419-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Users\Default User\sppsvc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\System.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\27d1bcfc3c54e0 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files\Uninstall Information\explorer.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files\Uninstall Information\7a0fd90576e088 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Fonts\wininit.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Windows\Fonts\56085415360792 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Windows\AppPatch\AppPatch64\wininit.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Windows\AppPatch\AppPatch64\56085415360792 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Users\Default User\sppsvc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Default User\sppsvc.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe
"C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Browserbrokersvc\3y1KXih899nQln49Z.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Browserbrokersvc\oOeNfDumm.bat" "
C:\Browserbrokersvc\SurrogateReview.exe
"C:\Browserbrokersvc\SurrogateReview.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Browserbrokersvc\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Browserbrokersvc\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Browserbrokersvc\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SurrogateReviewS" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\Documents\SurrogateReview.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SurrogateReview" /sc ONLOGON /tr "'C:\Users\All Users\Documents\SurrogateReview.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SurrogateReviewS" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\Documents\SurrogateReview.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Windows\Fonts\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\Fonts\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Windows\Fonts\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\lsass.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\System.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\RedistList\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Browserbrokersvc\System.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Browserbrokersvc\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Browserbrokersvc\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Windows\AppPatch\AppPatch64\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\AppPatch\AppPatch64\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Windows\AppPatch\AppPatch64\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\sppsvc.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Default User\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 14 /tr "'C:\Browserbrokersvc\cmd.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Browserbrokersvc\cmd.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 5 /tr "'C:\Browserbrokersvc\cmd.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Links\lsm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Default\Links\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Links\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\explorer.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\07daf2c2-fe8f-11ee-804d-f636db4e28e7\explorer.exe'" /rl HIGHEST /f
C:\Users\Default User\sppsvc.exe
"C:\Users\Default User\sppsvc.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a0994533.xsph.ru | udp |
| RU | 141.8.192.93:80 | a0994533.xsph.ru | tcp |
Files
C:\Browserbrokersvc\3y1KXih899nQln49Z.vbe
| MD5 | 9dfc48bf369960d5c21d15ba3a1c316b |
| SHA1 | e65c01e0b9c9195a26e8ba62a98c47d18b47ffda |
| SHA256 | f819f7be0f1632c9745dabe976276c32552491369e16a334ef8e64394c1897e0 |
| SHA512 | f2ae68909f0117016d0ee55fee9fd176449606031f52018de4f83ec60d7b8336ab83698c1c6cea1b6b060226799f6a4317c9e9e130e67d4d4a579c0a7dc00833 |
C:\Browserbrokersvc\oOeNfDumm.bat
| MD5 | 8baf3afcfd0b9b99ffbbcdf9716f583d |
| SHA1 | 68c59251fe8c356ab8fc47db55a4b872de9795d0 |
| SHA256 | fc76147436c411814d9ee80dca9d9af0c67bcee59e9513e912a89322a8343706 |
| SHA512 | 46ecbb36806f670fb850c839db6fe72ffe21361b7a1edad444f6e50cd21a9d2810afa54f9babeba056a4b6b8187ea0db61a8854e3b3c4a70a4ba92c05c64a140 |
\Browserbrokersvc\SurrogateReview.exe
| MD5 | aac537dd9bdd5e971c412a81cc7d05b0 |
| SHA1 | 4fac4c447725162660fbe405d52a22ed54065f58 |
| SHA256 | 938ee50908041d657958d7f13ef8c24d57566e18bd4db0af132ba5b438da9ec0 |
| SHA512 | cdfe34cfb15679255ad991ace237dc722a55eb0cedcb77135d5aad46e985ff41460c23cfc424c6720a25e8ca07911b3920e42c0f9491f79e3f53d1d44c67a26f |
memory/2788-13-0x0000000000D10000-0x0000000000DE6000-memory.dmp
memory/1776-46-0x0000000000060000-0x0000000000136000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-18 16:52
Reported
2024-06-18 16:54
Platform
win10v2004-20240508-en
Max time kernel
62s
Max time network
51s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\sihost.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Common Files\System\55b276f4edf653 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files\Windows Defender\de-DE\dllhost.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files\Windows Defender\de-DE\5940a34987c991 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Program Files\Common Files\System\StartMenuExperienceHost.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\security\EDP\Logs\5940a34987c991 | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Windows\OCR\en-us\SurrogateReview.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| File created | C:\Windows\security\EDP\Logs\dllhost.exe | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe | N/A |
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| N/A | N/A | C:\Browserbrokersvc\sihost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Browserbrokersvc\SurrogateReview.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Browserbrokersvc\sihost.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe
"C:\Users\Admin\AppData\Local\Temp\4931e5d3811a460f47678631f4bdc82c9c6e9176ae3940403e690bc82e3714a9.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Browserbrokersvc\3y1KXih899nQln49Z.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Browserbrokersvc\oOeNfDumm.bat" "
C:\Browserbrokersvc\SurrogateReview.exe
"C:\Browserbrokersvc\SurrogateReview.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Recent\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\S-1-5-21-1337824034-2731376981-3755436523-1000\SppExtComObj.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\S-1-5-21-1337824034-2731376981-3755436523-1000\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\S-1-5-21-1337824034-2731376981-3755436523-1000\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Program Files\Common Files\System\StartMenuExperienceHost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\Common Files\System\StartMenuExperienceHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 8 /tr "'C:\Program Files\Common Files\System\StartMenuExperienceHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 8 /tr "'C:\Browserbrokersvc\sihost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Browserbrokersvc\sihost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 11 /tr "'C:\Browserbrokersvc\sihost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Defender\de-DE\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\de-DE\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Defender\de-DE\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Windows\security\EDP\Logs\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\security\EDP\Logs\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Windows\security\EDP\Logs\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Local Settings\services.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\Local Settings\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\Public\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Public\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\Public\csrss.exe'" /rl HIGHEST /f
C:\Browserbrokersvc\sihost.exe
"C:\Browserbrokersvc\sihost.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a0994533.xsph.ru | udp |
| US | 8.8.8.8:53 | a0994533.xsph.ru | udp |
Files
C:\Browserbrokersvc\3y1KXih899nQln49Z.vbe
| MD5 | 9dfc48bf369960d5c21d15ba3a1c316b |
| SHA1 | e65c01e0b9c9195a26e8ba62a98c47d18b47ffda |
| SHA256 | f819f7be0f1632c9745dabe976276c32552491369e16a334ef8e64394c1897e0 |
| SHA512 | f2ae68909f0117016d0ee55fee9fd176449606031f52018de4f83ec60d7b8336ab83698c1c6cea1b6b060226799f6a4317c9e9e130e67d4d4a579c0a7dc00833 |
C:\Browserbrokersvc\oOeNfDumm.bat
| MD5 | 8baf3afcfd0b9b99ffbbcdf9716f583d |
| SHA1 | 68c59251fe8c356ab8fc47db55a4b872de9795d0 |
| SHA256 | fc76147436c411814d9ee80dca9d9af0c67bcee59e9513e912a89322a8343706 |
| SHA512 | 46ecbb36806f670fb850c839db6fe72ffe21361b7a1edad444f6e50cd21a9d2810afa54f9babeba056a4b6b8187ea0db61a8854e3b3c4a70a4ba92c05c64a140 |
C:\Browserbrokersvc\SurrogateReview.exe
| MD5 | aac537dd9bdd5e971c412a81cc7d05b0 |
| SHA1 | 4fac4c447725162660fbe405d52a22ed54065f58 |
| SHA256 | 938ee50908041d657958d7f13ef8c24d57566e18bd4db0af132ba5b438da9ec0 |
| SHA512 | cdfe34cfb15679255ad991ace237dc722a55eb0cedcb77135d5aad46e985ff41460c23cfc424c6720a25e8ca07911b3920e42c0f9491f79e3f53d1d44c67a26f |
memory/3704-12-0x00007FF840763000-0x00007FF840765000-memory.dmp
memory/3704-13-0x0000000000DA0000-0x0000000000E76000-memory.dmp