Analysis
-
max time kernel
183s -
max time network
203s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 22:54
Static task
static1
Behavioral task
behavioral1
Sample
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
Resource
win10v2004-en-20220112
General
-
Target
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe
-
Size
584KB
-
MD5
18da75444ee5033c3e92ea044f0c42f3
-
SHA1
ed96c83bea00ba35a28f073317d84b68a296d789
-
SHA256
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43
-
SHA512
aa342c60cfbfcd551c235a5bfc1dd85d7ffbee3edc38c7cc1668b27bf17c2e18c2e7219db79b5cc1b7fc3a940b2dd13c5c828387ea49093dd748f31922c4c825
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6b850caf277e7f79
https://mazedecrypt.top/6b850caf277e7f79
Signatures
-
Maze
Ransomware family also known as ChaCha.
-
Drops file in Program Files directory 17 IoCs
Processes:
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exedescription ioc Process File opened for modification C:\Program Files\CompareCompress.mp4v 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\MeasureDismount.dib 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\ResolveSubmit.dwfx 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\GroupGrant.pcx 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\InstallConfirm.ex_ 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\ProtectOpen.cab 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\RestoreFind.ttc 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\JoinPush.bin 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\SetRemove.css 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\SkipFind.vb 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File created C:\Program Files\DECRYPT-FILES.txt 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\6b850caf277e7f79.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\RemoveUnpublish.wmv 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\RevokeSet.au 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files\UnregisterSubmit.contact 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe File opened for modification C:\Program Files (x86)\6b850caf277e7f79.tmp 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe -
Drops file in Windows directory 3 IoCs
Processes:
svchost.exeTiWorker.exedescription ioc Process 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 File opened for modification C:\Windows\WinSxS\pending.xml TiWorker.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\DownloadMonthlyLinkLocalBytes = "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\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 Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "10.005674" 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\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 (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\MemoryUsageKB = "4328" 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\DownloadMonthlyCacheHostBytes = "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\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\UploadRatePct = "100" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.992065" 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\DownloadMonthlyRateFrCnt = "0" 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\SwarmCount = "1" 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\FrDownloadRatePct = "90" 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\GroupConnectionCount = "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\Usage\UploadMonthlyInternetBytes = "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\DownloadMonthlyInternetBytes = "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 (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\DownlinkBps = "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\MemoryUsageKB = "4132" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.555536" 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\KVFileExpirationTime = "132897024016539176" 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\NormalDownloadPendingCount = "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\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\DownlinkUsageBps = "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 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exepid Process 3204 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe 3204 6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
TiWorker.exevssvc.exedescription pid Process Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3812 vssvc.exe Token: SeRestorePrivilege 3812 vssvc.exe Token: SeAuditPrivilege 3812 vssvc.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe Token: SeRestorePrivilege 3896 TiWorker.exe Token: SeSecurityPrivilege 3896 TiWorker.exe Token: SeBackupPrivilege 3896 TiWorker.exe
Processes
-
C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:1964
-
C:\Users\Admin\AppData\Local\Temp\6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe"C:\Users\Admin\AppData\Local\Temp\6b81e51375b6424aa9e77bdaf56fb50298a8defda34fd42100eb0dc070f18c43.exe"1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:3204
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:3048
-
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:3896
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3812