Analysis
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max time kernel
158s -
max time network
177s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 22:51
Static task
static1
Behavioral task
behavioral1
Sample
7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe
Resource
win10v2004-en-20220112
General
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Target
7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe
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Size
455KB
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MD5
c7ff4562fa2f817435f54ece870eab73
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SHA1
49d2bcd881723f239b66dc6eac8816419e86d486
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SHA256
7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23
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SHA512
bbe34ea8cf5ff1c8ccab6b3b077238923f005555c2137dfc6b7ad8e2eb4ac849f8145dbaa3029d192f0af0358bab82bf588c3b9e7109636fd7a928ab1e8cc5bd
Malware Config
Extracted
C:\DECRYPT-FILES.html
<b>[email protected]</b>
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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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
description ioc Process File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.exe File opened for modification C:\Windows\Logs\CBS\CBS.log 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 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 45 IoCs
description ioc Process 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\DownloadMonthlyRateBkCnt = "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\UploadMonthlyLanBytes = "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 (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 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\DODownloadMode = "1" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0" 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\GroupConnectionCount = "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\DownloadMonthlyInternetBytes = "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\DownloadMonthlyRateBkBps = "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\PeerInfoCount = "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\Usage svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.426570" 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\DownloadMonthlyCacheHostBytes = "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\CacheSizeBytes = "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\NormalDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4116" 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\SwarmCount = "1" 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\DownlinkUsageBps = "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\PriorityDownloadCount = "0" 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\KVFileExpirationTime = "132897021462471249" 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\DownloadMonthlyCdnBytes = "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 (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0" svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1732 7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe 1732 7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4056 wmic.exe Token: SeSecurityPrivilege 4056 wmic.exe Token: SeTakeOwnershipPrivilege 4056 wmic.exe Token: SeLoadDriverPrivilege 4056 wmic.exe Token: SeSystemProfilePrivilege 4056 wmic.exe Token: SeSystemtimePrivilege 4056 wmic.exe Token: SeProfSingleProcessPrivilege 4056 wmic.exe Token: SeIncBasePriorityPrivilege 4056 wmic.exe Token: SeCreatePagefilePrivilege 4056 wmic.exe Token: SeBackupPrivilege 4056 wmic.exe Token: SeRestorePrivilege 4056 wmic.exe Token: SeShutdownPrivilege 4056 wmic.exe Token: SeDebugPrivilege 4056 wmic.exe Token: SeSystemEnvironmentPrivilege 4056 wmic.exe Token: SeRemoteShutdownPrivilege 4056 wmic.exe Token: SeUndockPrivilege 4056 wmic.exe Token: SeManageVolumePrivilege 4056 wmic.exe Token: 33 4056 wmic.exe Token: 34 4056 wmic.exe Token: 35 4056 wmic.exe Token: 36 4056 wmic.exe Token: SeIncreaseQuotaPrivilege 4056 wmic.exe Token: SeSecurityPrivilege 4056 wmic.exe Token: SeTakeOwnershipPrivilege 4056 wmic.exe Token: SeLoadDriverPrivilege 4056 wmic.exe Token: SeSystemProfilePrivilege 4056 wmic.exe Token: SeSystemtimePrivilege 4056 wmic.exe Token: SeProfSingleProcessPrivilege 4056 wmic.exe Token: SeIncBasePriorityPrivilege 4056 wmic.exe Token: SeCreatePagefilePrivilege 4056 wmic.exe Token: SeBackupPrivilege 4056 wmic.exe Token: SeRestorePrivilege 4056 wmic.exe Token: SeShutdownPrivilege 4056 wmic.exe Token: SeDebugPrivilege 4056 wmic.exe Token: SeSystemEnvironmentPrivilege 4056 wmic.exe Token: SeRemoteShutdownPrivilege 4056 wmic.exe Token: SeUndockPrivilege 4056 wmic.exe Token: SeManageVolumePrivilege 4056 wmic.exe Token: 33 4056 wmic.exe Token: 34 4056 wmic.exe Token: 35 4056 wmic.exe Token: 36 4056 wmic.exe Token: SeBackupPrivilege 1936 vssvc.exe Token: SeRestorePrivilege 1936 vssvc.exe Token: SeAuditPrivilege 1936 vssvc.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe Token: SeRestorePrivilege 3152 TiWorker.exe Token: SeSecurityPrivilege 3152 TiWorker.exe Token: SeBackupPrivilege 3152 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1732 wrote to memory of 4056 1732 7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe 59 PID 1732 wrote to memory of 4056 1732 7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe 59
Processes
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C:\Users\Admin\AppData\Local\Temp\7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe"C:\Users\Admin\AppData\Local\Temp\7dc5561778965eb8caba07ed32d5a683dd4acc8731e56525c1931363a3451c23.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Windows\system32\wbem\wmic.exe"C:\hqfjq\bfc\..\..\Windows\i\k\wvswy\..\..\..\system32\umqh\..\wbem\nymw\yvwf\dnu\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4056
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1936
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:1648
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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:2004
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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:3152