Analysis
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max time kernel
176s -
max time network
179s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 23:10
Static task
static1
Behavioral task
behavioral1
Sample
138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe
Resource
win10v2004-en-20220112
General
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Target
138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe
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Size
449KB
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MD5
8107f019d9d6fe62a49ce7ad40fa1f7b
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SHA1
8bf319aa49589558f0ff482bff805676a7fed109
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SHA256
138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e
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SHA512
7991048cbc053d71e2d92980e516426d04ef55617e04bd00b568c2e7ebd155211dfd8af8f492614cbe056ade6fb81365dd8a1f5cc94e3dbecbd10edb60a67a61
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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Drops file in Windows directory 1 IoCs
description ioc Process 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\DownlinkUsageBps = "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\DownloadMonthlyCdnBytes = "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\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\UplinkUsageBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90" 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\PriorityDownloadCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "1.218841" 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\NormalDownloadPendingCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4092" 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\DODownloadMode = "1" 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\DownloadMonthlyRateBkCnt = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132897036521392847" 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\PeerInfoCount = "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\UploadRatePct = "100" 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\DownloadMonthlyInternetBytes = "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\UploadMonthlyLanBytes = "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\MonthID = "2" 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\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\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\UplinkBps = "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\NormalDownloadCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "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 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 312 138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe 312 138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2276 wmic.exe Token: SeSecurityPrivilege 2276 wmic.exe Token: SeTakeOwnershipPrivilege 2276 wmic.exe Token: SeLoadDriverPrivilege 2276 wmic.exe Token: SeSystemProfilePrivilege 2276 wmic.exe Token: SeSystemtimePrivilege 2276 wmic.exe Token: SeProfSingleProcessPrivilege 2276 wmic.exe Token: SeIncBasePriorityPrivilege 2276 wmic.exe Token: SeCreatePagefilePrivilege 2276 wmic.exe Token: SeBackupPrivilege 2276 wmic.exe Token: SeRestorePrivilege 2276 wmic.exe Token: SeShutdownPrivilege 2276 wmic.exe Token: SeDebugPrivilege 2276 wmic.exe Token: SeSystemEnvironmentPrivilege 2276 wmic.exe Token: SeRemoteShutdownPrivilege 2276 wmic.exe Token: SeUndockPrivilege 2276 wmic.exe Token: SeManageVolumePrivilege 2276 wmic.exe Token: 33 2276 wmic.exe Token: 34 2276 wmic.exe Token: 35 2276 wmic.exe Token: 36 2276 wmic.exe Token: SeIncreaseQuotaPrivilege 2276 wmic.exe Token: SeSecurityPrivilege 2276 wmic.exe Token: SeTakeOwnershipPrivilege 2276 wmic.exe Token: SeLoadDriverPrivilege 2276 wmic.exe Token: SeSystemProfilePrivilege 2276 wmic.exe Token: SeSystemtimePrivilege 2276 wmic.exe Token: SeProfSingleProcessPrivilege 2276 wmic.exe Token: SeIncBasePriorityPrivilege 2276 wmic.exe Token: SeCreatePagefilePrivilege 2276 wmic.exe Token: SeBackupPrivilege 2276 wmic.exe Token: SeRestorePrivilege 2276 wmic.exe Token: SeShutdownPrivilege 2276 wmic.exe Token: SeDebugPrivilege 2276 wmic.exe Token: SeSystemEnvironmentPrivilege 2276 wmic.exe Token: SeRemoteShutdownPrivilege 2276 wmic.exe Token: SeUndockPrivilege 2276 wmic.exe Token: SeManageVolumePrivilege 2276 wmic.exe Token: 33 2276 wmic.exe Token: 34 2276 wmic.exe Token: 35 2276 wmic.exe Token: 36 2276 wmic.exe Token: SeBackupPrivilege 2636 vssvc.exe Token: SeRestorePrivilege 2636 vssvc.exe Token: SeAuditPrivilege 2636 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 312 wrote to memory of 2276 312 138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe 65 PID 312 wrote to memory of 2276 312 138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe 65
Processes
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C:\Users\Admin\AppData\Local\Temp\138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe"C:\Users\Admin\AppData\Local\Temp\138e4c4e33a36e147d296a4d9695e3adf1a33611d97e0365dd3884be1c26c60e.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:312 -
C:\Windows\system32\wbem\wmic.exe"C:\id\yio\..\..\Windows\eo\o\du\..\..\..\system32\j\r\..\..\wbem\j\rwry\wdoqr\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2276
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2636
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:3980
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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:1260