Analysis
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max time kernel
180s -
max time network
220s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
20-02-2022 06:20
Static task
static1
Behavioral task
behavioral1
Sample
683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe
Resource
win10v2004-en-20220112
windows10-2004_x64
0 signatures
0 seconds
General
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Target
683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe
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Size
190KB
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MD5
65865d94596a90b7e6204deb1de53c3d
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SHA1
282e3776f86d3b0b2916ed6047ad272fe2f0cf6e
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SHA256
683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb
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SHA512
3c148f68856bf284f1775eb67a47ba880d4f69f8d6180a436a860484935c05d95ba5a3ff13e9c4280bb553f49e4f818ffce6e0a6016323d836cabe69bf8be7f5
Score
10/10
Malware Config
Extracted
Path
C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html
Family
ryuk
Ransom Note
<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> </p><p style="position:absolute;bottom:0;right:1%;font-weight:bold;font-size:170%">balance of shadow universe</p><div style="font-size: 550%;font-weight:bold;width:50%;height:50%;overflow:auto;margin:auto;position:absolute;top:35%;left:40%;">Ryuk</div></body></html�������������������������������������������������������������������������������������������������������������������������������������������������������
Emails
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Executes dropped EXE 1 IoCs
pid Process 640 HPAQGPd.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation HPAQGPd.exe -
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\a: 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe File opened (read-only) \??\A: 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe -
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 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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 50 IoCs
description ioc Process 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\DownlinkBps = "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\UploadRatePct = "100" 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\DownloadMonthlyRateFrCnt = "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\NormalDownloadPendingCount = "0" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.702987" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "6.000223" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4244" 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\DownloadMonthlyRateBkCnt = "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\DownloadMonthlyGroupBytes = "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\DownlinkUsageBps = "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\MemoryUsageKB = "4252" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000" 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\MonthID = "2" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132899899994019644" 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\DownloadMonthlyCacheHostBytes = "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\PriorityDownloadCount = "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\DownloadMonthlyRateFrBps = "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\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\SwarmCount = "1" 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\UplinkBps = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "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\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\DownloadMonthlyInternetBytes = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4128" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "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\Settings 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\DownloadMonthlyCdnBytes = "0" svchost.exe -
Runs net.exe
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Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 640 HPAQGPd.exe 640 HPAQGPd.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeBackupPrivilege 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe Token: SeBackupPrivilege 640 HPAQGPd.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 1308 wrote to memory of 640 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 71 PID 1308 wrote to memory of 640 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 71 PID 1308 wrote to memory of 640 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 71 PID 1308 wrote to memory of 3416 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 73 PID 1308 wrote to memory of 3416 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 73 PID 1308 wrote to memory of 3416 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 73 PID 1308 wrote to memory of 3636 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 74 PID 1308 wrote to memory of 3636 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 74 PID 1308 wrote to memory of 3636 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 74 PID 1308 wrote to memory of 3304 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 77 PID 1308 wrote to memory of 3304 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 77 PID 1308 wrote to memory of 3304 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 77 PID 1308 wrote to memory of 1992 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 79 PID 1308 wrote to memory of 1992 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 79 PID 1308 wrote to memory of 1992 1308 683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe 79 PID 3304 wrote to memory of 3844 3304 net.exe 84 PID 3304 wrote to memory of 3844 3304 net.exe 84 PID 3304 wrote to memory of 3844 3304 net.exe 84 PID 3416 wrote to memory of 3280 3416 net.exe 82 PID 3416 wrote to memory of 3280 3416 net.exe 82 PID 3416 wrote to memory of 3280 3416 net.exe 82 PID 1992 wrote to memory of 3288 1992 net.exe 81 PID 1992 wrote to memory of 3288 1992 net.exe 81 PID 1992 wrote to memory of 3288 1992 net.exe 81 PID 3636 wrote to memory of 3224 3636 net.exe 83 PID 3636 wrote to memory of 3224 3636 net.exe 83 PID 3636 wrote to memory of 3224 3636 net.exe 83 PID 640 wrote to memory of 4264 640 HPAQGPd.exe 85 PID 640 wrote to memory of 4264 640 HPAQGPd.exe 85 PID 640 wrote to memory of 4264 640 HPAQGPd.exe 85 PID 640 wrote to memory of 4324 640 HPAQGPd.exe 87 PID 640 wrote to memory of 4324 640 HPAQGPd.exe 87 PID 640 wrote to memory of 4324 640 HPAQGPd.exe 87 PID 4324 wrote to memory of 4396 4324 net.exe 90 PID 4264 wrote to memory of 4392 4264 net.exe 89 PID 4264 wrote to memory of 4392 4264 net.exe 89 PID 4324 wrote to memory of 4396 4324 net.exe 90 PID 4264 wrote to memory of 4392 4264 net.exe 89 PID 4324 wrote to memory of 4396 4324 net.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe"C:\Users\Admin\AppData\Local\Temp\683c3cdeda665afca5af0d964d280f27b3fbb77185b0a24584e139c33c5edddb.exe"1⤵
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308 -
C:\Users\Admin\AppData\Local\Temp\HPAQGPd.exe"C:\Users\Admin\AppData\Local\Temp\HPAQGPd.exe" 8 LAN2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640 -
C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y3⤵
- Suspicious use of WriteProcessMemory
PID:4264 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "audioendpointbuilder" /y4⤵PID:4392
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "samss" /y3⤵
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "samss" /y4⤵PID:4396
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y2⤵
- Suspicious use of WriteProcessMemory
PID:3416 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "audioendpointbuilder" /y3⤵PID:3280
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "samss" /y2⤵
- Suspicious use of WriteProcessMemory
PID:3636 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "samss" /y3⤵PID:3224
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y2⤵
- Suspicious use of WriteProcessMemory
PID:3304 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "audioendpointbuilder" /y3⤵PID:3844
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop "samss" /y2⤵
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop "samss" /y3⤵PID:3288
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:3048
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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:3036