Analysis
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max time kernel
157s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
15-02-2022 06:13
Static task
static1
Behavioral task
behavioral1
Sample
c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
Resource
win7-en-20211208
General
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Target
c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
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Size
675KB
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MD5
cef76d7fba522e19ac03269b6275ff3f
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SHA1
81cbb61d06fcd512081a5dac97a7865d98d7a22b
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SHA256
c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d
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SHA512
e4728e26ab451ec452fbb5b61fbc7efe4c7e3c138cb91ed2a4bb75a339bf2ee1cdee9f7fa0c03fb398fea3c6dd87c5075bff0095b6e55811198865550bdab33a
Malware Config
Extracted
| Family |
vidar |
| Version |
48.1 |
| Botnet |
937 |
| C2 |
https://koyu.space/@rspich |
| Attributes |
profile_id 937 |
Signatures
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Suspicious use of NtCreateProcessExOtherParentProcess ⋅ 1 IoCs
Processes:
WerFault.exedescription pid process target process PID 544 created 2168 544 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe -
Vidar Stealer ⋅ 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2168-131-0x00000000022C0000-0x0000000002395000-memory.dmp family_vidar behavioral2/memory/2168-132-0x0000000000400000-0x00000000004D8000-memory.dmp family_vidar -
Drops file in Windows directory ⋅ 3 IoCs
Processes:
TiWorker.exesvchost.exedescription ioc process File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe File opened for modification C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe -
Program crash ⋅ 1 IoCs
Processes:
WerFault.exepid pid_target process target process 828 2168 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe -
Checks processor information in registry ⋅ 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WerFault.exeMusNotifyIcon.exedescription 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 Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe -
Enumerates system info in registry ⋅ 2 TTPs 2 IoCs
Processes:
WerFault.exedescription 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 ⋅ 51 IoCs
Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.013172" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132895556354157271" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4408" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "6.617449" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4112" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "4.545609" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4056" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "10.008429" svchost.exe -
Suspicious behavior: EnumeratesProcesses ⋅ 2 IoCs
Processes:
WerFault.exepid process 828 WerFault.exe 828 WerFault.exe -
Suspicious use of AdjustPrivilegeToken ⋅ 64 IoCs
Processes:
TiWorker.exedescription pid process Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe Token: SeRestorePrivilege 4072 TiWorker.exe Token: SeSecurityPrivilege 4072 TiWorker.exe Token: SeBackupPrivilege 4072 TiWorker.exe -
Suspicious use of WriteProcessMemory ⋅ 2 IoCs
Processes:
WerFault.exedescription pid process target process PID 544 wrote to memory of 2168 544 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe PID 544 wrote to memory of 2168 544 WerFault.exe c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exePID:2168"C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe"
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C:\Windows\SysWOW64\WerFault.exePID:828C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 1044Program crashChecks processor information in registryEnumerates system info in registrySuspicious behavior: EnumeratesProcesses
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C:\Windows\system32\MusNotifyIcon.exePID:1900%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13Checks processor information in registry
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C:\Windows\System32\svchost.exePID:2900C:\Windows\System32\svchost.exe -k NetworkService -pDrops file in Windows directoryModifies data under HKEY_USERS
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exePID:4072C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -EmbeddingDrops file in Windows directorySuspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exePID:544C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2168 -ip 2168Suspicious use of NtCreateProcessExOtherParentProcessSuspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix
Collection
Command and Control
Credential Access
Defense Evasion
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Replay Monitor
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