Analysis
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max time kernel
177s -
max time network
204s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 23:06
Static task
static1
Behavioral task
behavioral1
Sample
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe
Resource
win10v2004-en-20220112
General
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Target
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe
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Size
463KB
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MD5
79d137d91be9819930eeb3876e4fbe79
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SHA1
ac8ac79b8de3920f604d4d2a92a5adff3d2c8471
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SHA256
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54
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SHA512
21480c5dacea52a6d9a6315914c170b3c5d44f20c6362b990d31f4bf5d599e8a28261fc6797fbf60256e2a17fa7a913f670cd8d3deb9b8a7b5bb6f746e6c9727
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/875c0983ab7e879a
https://mazedecrypt.top/875c0983ab7e879a
Signatures
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Maze
Ransomware family also known as ChaCha.
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Drops startup file 4 IoCs
Processes:
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exedescription ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\twdryj.tmp 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\twdryj.tmp 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Windows directory 3 IoCs
Processes:
TiWorker.exesvchost.exedescription 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.
Processes:
MusNotifyIcon.exedescription ioc Process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe -
Modifies data under HKEY_USERS 49 IoCs
Processes:
svchost.exedescription ioc Process 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\DownloadMonthlyRateFrBps = "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\SwarmCount = "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\Config\DODownloadMode = "1" 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\MonthID = "2" 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\LinkLocalConnectionCount = "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\Config\DownloadMode_BackCompat = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "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\DownloadMonthlyRateBkBps = "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\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4056" 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\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\Config\KVFileExpirationTime = "132897032452376325" 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\UploadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0" 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\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\DownlinkUsageBps = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.847424" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "1.351958" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4160" 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\DownloadMonthlyInternetBytes = "0" svchost.exe 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\UplinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000" 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\PriorityDownloadCount = "0" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization 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\LANConnectionCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "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\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 (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0" svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exepid Process 2600 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe 2600 30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
vssvc.exeTiWorker.exedescription pid Process Token: SeBackupPrivilege 2976 vssvc.exe Token: SeRestorePrivilege 2976 vssvc.exe Token: SeAuditPrivilege 2976 vssvc.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe Token: SeRestorePrivilege 3292 TiWorker.exe Token: SeSecurityPrivilege 3292 TiWorker.exe Token: SeBackupPrivilege 3292 TiWorker.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe"C:\Users\Admin\AppData\Local\Temp\30b72e83d66cbe9e724c8e2b21179aecd4bcf68b2ec7895616807df380afab54.exe"1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
PID:2600
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:4048
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2976
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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:3892
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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:3292