Analysis
- max time kernel
166s - max time network
178s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
19/02/2022, 16:23
Static task
static1
Behavioral task
behavioral1
Sample
5b5e82e79c52452b2d03a4fa83b95bbeec8a4b1afd97edd9999a77d26f5488b4.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
- Target 5b5e82e79c52452b2d03a4fa83b95bbeec8a4b1afd97edd9999a77d26f5488b4.exe
- Size 534KB
- Sample220219-tvs3nsbgan
- SHA256 5b5e82e79c52452b2d03a4fa83b95bbeec8a4b1afd97edd9999a77d26f5488b4
- MD5 cfd9c6e3328e8553ae573a458850224e
- SHA1 b39b8f1443a310f5cc6bb8559ca1194aba9f9b48
- SHA512 b6bf58039e0b673db407a8073b1dd908744bf682ca76883bb01b6a71a20b5d47fc39e0a610c95dab1236345a9412484ae330fb02c05ade3ee7093b15262809bb
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
-
quasar
Version
-
2.1.0.0
Botnet
-
svchost
C2
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narrow-ink.auto.playit.gg:50377
Mutex
-
VNM_MUTEX_LYc2mMMFlAV9sQbWDZ
Attributes
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encryption_key
RlSxUty7h5rPz7eaEnn4
-
install_name
svhost.exe
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log_directory
Logs
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reconnect_delay
3000
-
startup_key
svchost
-
subdirectory
svhost
Signatures
- Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
resource yara_rule behavioral2/memory/3580-131-0x0000000000EE0000-0x0000000000F6C000-memory.dmp disable_win_def - Quasar Payload 1 IoCs
resource yara_rule behavioral2/memory/3580-131-0x0000000000EE0000-0x0000000000F6C000-memory.dmp family_quasar - Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe 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 - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe - Modifies data under HKEY_USERS 49 IoCs
description 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\PriorityDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132899378628478673" 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\BkDownloadRatePct = "45" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.226246" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000" 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\CDNConnectionCount = "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\MonthlyUploadRestriction = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.900901" 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\NormalDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4096" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1" 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\UploadMonthlyLanBytes = "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\Usage\DownloadMonthlyRateFrCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4184" 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\DownloadMonthlyRateBkBps = "0" 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\UplinkBps = "0" 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\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\CacheSizeBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0" 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\Config 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\DownloadMonthlyCdnBytes = "0" 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\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "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\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\DownloadMonthlyGroupBytes = "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\MonthID = "2" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings 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\GroupConnectionCount = "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\FrDownloadRatePct = "90" svchost.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe Token: SeRestorePrivilege 2584 TiWorker.exe Token: SeSecurityPrivilege 2584 TiWorker.exe Token: SeBackupPrivilege 2584 TiWorker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5b5e82e79c52452b2d03a4fa83b95bbeec8a4b1afd97edd9999a77d26f5488b4.exe"C:\Users\Admin\AppData\Local\Temp\5b5e82e79c52452b2d03a4fa83b95bbeec8a4b1afd97edd9999a77d26f5488b4.exe"1⤵PID:3580
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:2196
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:3288
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2584