Analysis
-
max time kernel
194s -
max time network
220s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 22:57
Static task
static1
Behavioral task
behavioral1
Sample
5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe
Resource
win10v2004-en-20220112
General
-
Target
5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe
-
Size
389KB
-
MD5
1ca55a6f4216df3c48a88eb735f876f7
-
SHA1
0b0f716e05b3af02bd61b2dc3d1b67ed3529298d
-
SHA256
5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0
-
SHA512
c5d8e76b8952a88d7fe95084d6e2dece889dcb7100ee0ce9e596854d265697ae2c5e4c357dee9b6444a651508d93d6053b645de107475a3548605566330351a3
Malware Config
Extracted
C:\DECRYPT-FILES.html
<b>[email protected]</b>
Signatures
-
Maze
Ransomware family also known as ChaCha.
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
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\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat svchost.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.
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 45 IoCs
description ioc Process 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\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 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\PriorityDownloadPendingCount = "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\LinkLocalConnectionCount = "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\UploadMonthlyLanBytes = "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\DownloadMonthlyCacheHostBytes = "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\SwarmCount = "1" 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 Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45" svchost.exe Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization 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\CacheSizeBytes = "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\MemoryUsageKB = "4200" 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\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\Config\DODownloadMode = "1" 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\UploadCount = "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\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\UploadRatePct = "100" 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\Usage\CPUpct = "0.403226" 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 (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\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\Config\KVFileExpirationTime = "132897026217690308" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "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\Usage\DownloadMonthlyGroupBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0" svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1220 5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe 1220 5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeIncreaseQuotaPrivilege 3336 wmic.exe Token: SeSecurityPrivilege 3336 wmic.exe Token: SeTakeOwnershipPrivilege 3336 wmic.exe Token: SeLoadDriverPrivilege 3336 wmic.exe Token: SeSystemProfilePrivilege 3336 wmic.exe Token: SeSystemtimePrivilege 3336 wmic.exe Token: SeProfSingleProcessPrivilege 3336 wmic.exe Token: SeIncBasePriorityPrivilege 3336 wmic.exe Token: SeCreatePagefilePrivilege 3336 wmic.exe Token: SeBackupPrivilege 3336 wmic.exe Token: SeRestorePrivilege 3336 wmic.exe Token: SeShutdownPrivilege 3336 wmic.exe Token: SeDebugPrivilege 3336 wmic.exe Token: SeSystemEnvironmentPrivilege 3336 wmic.exe Token: SeRemoteShutdownPrivilege 3336 wmic.exe Token: SeUndockPrivilege 3336 wmic.exe Token: SeManageVolumePrivilege 3336 wmic.exe Token: 33 3336 wmic.exe Token: 34 3336 wmic.exe Token: 35 3336 wmic.exe Token: 36 3336 wmic.exe Token: SeIncreaseQuotaPrivilege 3336 wmic.exe Token: SeSecurityPrivilege 3336 wmic.exe Token: SeTakeOwnershipPrivilege 3336 wmic.exe Token: SeLoadDriverPrivilege 3336 wmic.exe Token: SeSystemProfilePrivilege 3336 wmic.exe Token: SeSystemtimePrivilege 3336 wmic.exe Token: SeProfSingleProcessPrivilege 3336 wmic.exe Token: SeIncBasePriorityPrivilege 3336 wmic.exe Token: SeCreatePagefilePrivilege 3336 wmic.exe Token: SeBackupPrivilege 3336 wmic.exe Token: SeRestorePrivilege 3336 wmic.exe Token: SeShutdownPrivilege 3336 wmic.exe Token: SeDebugPrivilege 3336 wmic.exe Token: SeSystemEnvironmentPrivilege 3336 wmic.exe Token: SeRemoteShutdownPrivilege 3336 wmic.exe Token: SeUndockPrivilege 3336 wmic.exe Token: SeManageVolumePrivilege 3336 wmic.exe Token: 33 3336 wmic.exe Token: 34 3336 wmic.exe Token: 35 3336 wmic.exe Token: 36 3336 wmic.exe Token: SeBackupPrivilege 2332 vssvc.exe Token: SeRestorePrivilege 2332 vssvc.exe Token: SeAuditPrivilege 2332 vssvc.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe Token: SeRestorePrivilege 3536 TiWorker.exe Token: SeSecurityPrivilege 3536 TiWorker.exe Token: SeBackupPrivilege 3536 TiWorker.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1220 wrote to memory of 3336 1220 5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe 72 PID 1220 wrote to memory of 3336 1220 5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe 72
Processes
-
C:\Users\Admin\AppData\Local\Temp\5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe"C:\Users\Admin\AppData\Local\Temp\5d0eb5bbd919e415e5cc944bcb774ff3bb9bcab8f428b128bd3f55a374d0cfe0.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\system32\wbem\wmic.exe"C:\vbqvx\jqqv\..\..\Windows\c\qh\..\..\system32\i\..\wbem\wi\olry\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3336
-
-
C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:3872
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:632
-
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:3536
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2332