Analysis
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max time kernel
60s -
max time network
58s -
platform
windows10_x64 -
resource
win10-de-20211104 -
submitted
25-11-2021 16:25
Static task
static1
Behavioral task
behavioral1
Sample
5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12.dll
Resource
win10-de-20211104
General
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Target
5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12.dll
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Size
653KB
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MD5
0a3b6f5748154918428b8b57717883df
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SHA1
823133a14d7d3e14bb885ad8aaa94aa4eeda6c19
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SHA256
5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12
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SHA512
30a63f993db9673003fcd687141a83d210aa00e253d8947bce524dc7b37047b8cb612cadcb2c086c0e3ed4db9de54aad71361eef7f6c8515943b2d9bf2ee98c7
Malware Config
Extracted
emotet
Epoch5
51.178.61.60:443
168.197.250.14:80
45.79.33.48:8080
196.44.98.190:8080
177.72.80.14:7080
51.210.242.234:8080
185.148.169.10:8080
142.4.219.173:8080
78.47.204.80:443
78.46.73.125:443
37.44.244.177:8080
37.59.209.141:8080
191.252.103.16:80
54.38.242.185:443
85.214.67.203:8080
54.37.228.122:443
207.148.81.119:8080
195.77.239.39:8080
66.42.57.149:443
195.154.146.35:443
Signatures
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Registers COM server for autorun 1 TTPs
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Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 18 3752 rundll32.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification C:\Windows\SysWOW64\Taibwkhszc\gqrhrxif.iia rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 21 IoCs
Processes:
OfficeC2RClient.exedescription ioc process Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\Overrides OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\all\Overrides OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun\ConfigContextData OfficeC2RClient.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "1" OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata OfficeC2RClient.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor\ULSTagIds0 = "5804129,17110992,7202269,17110988,7153487,39965824,17962391,17962392,3702920,3462423,3700754,3965062,4297094,7153421,18716193,7153435,7202265,20502174,6308191,18407617" OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\TrustCenter\Experimentation OfficeC2RClient.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\ExternalFeatureOverrides\officeclicktorun OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\FirstSession\officeclicktorun OfficeC2RClient.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "2" OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe OfficeC2RClient.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor\ULSCategoriesSeverities = "1329 10,1329 50,941 10,1329 15,941 15,941 6,1329 100,1329 6" OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\officeclicktorun\Overrides OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor OfficeC2RClient.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0 OfficeC2RClient.exe -
Modifies registry class 44 IoCs
Processes:
FileSyncConfig.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\InProcServer32 FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\OneDrive\\OneDrive.exe,0" FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\WOW6432NODE\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\SHELLFOLDER FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\INSTANCE\INITPROPERTYBAG FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\SHELLFOLDER FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\System.IsPinnedToNameSpaceTree = "1" FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6} FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ = "OneDrive" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag\Attributes = "17" FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DEFAULTICON FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\SortOrderIndex = "66" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DefaultIcon FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\OneDrive\\OneDrive.exe,0" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DefaultIcon FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\WOW6432NODE\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\DEFAULTICON FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\WOW6432NODE\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\INPROCSERVER32 FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder\FolderValueFlags = "40" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder\Attributes = "4034920525" FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\WOW6432NODE\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\INSTANCE\INITPROPERTYBAG FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6} FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\SortOrderIndex = "66" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag\Attributes = "17" FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag\TargetKnownFolder = "{a52bba46-e9e1-435f-b3d9-28daa648c0f6}" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\System.IsPinnedToNameSpaceTree = "1" FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\InProcServer32\ = "%systemroot%\\SysWow64\\shell32.dll" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6} FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\InProcServer32\ = "%systemroot%\\system32\\shell32.dll" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag\TargetKnownFolder = "{a52bba46-e9e1-435f-b3d9-28daa648c0f6}" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder\FolderValueFlags = "40" FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ = "OneDrive" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\InProcServer32 FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\CLSID = "{0E5AAE11-A475-4c5b-AB00-C66DE400274E}" FileSyncConfig.exe Set value (int) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\ShellFolder\Attributes = "4034920525" FileSyncConfig.exe Key created \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance FileSyncConfig.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\CLSID = "{0E5AAE11-A475-4c5b-AB00-C66DE400274E}" FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6} FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_CLASSES\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\INPROCSERVER32 FileSyncConfig.exe Key deleted \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance FileSyncConfig.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
rundll32.exepid process 3752 rundll32.exe 3752 rundll32.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
rundll32.exepid process 4184 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
OfficeC2RClient.exepid process 4236 OfficeC2RClient.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
rundll32.exerundll32.exerundll32.exerundll32.exedescription pid process target process PID 1752 wrote to memory of 4580 1752 rundll32.exe rundll32.exe PID 1752 wrote to memory of 4580 1752 rundll32.exe rundll32.exe PID 1752 wrote to memory of 4580 1752 rundll32.exe rundll32.exe PID 4580 wrote to memory of 4184 4580 rundll32.exe rundll32.exe PID 4580 wrote to memory of 4184 4580 rundll32.exe rundll32.exe PID 4580 wrote to memory of 4184 4580 rundll32.exe rundll32.exe PID 4184 wrote to memory of 4620 4184 rundll32.exe rundll32.exe PID 4184 wrote to memory of 4620 4184 rundll32.exe rundll32.exe PID 4184 wrote to memory of 4620 4184 rundll32.exe rundll32.exe PID 4620 wrote to memory of 3752 4620 rundll32.exe rundll32.exe PID 4620 wrote to memory of 3752 4620 rundll32.exe rundll32.exe PID 4620 wrote to memory of 3752 4620 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12.dll,#12⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\5fbf79f34e749fd3b7bb19f0a9cfd2c1673f382eed5e113aca28c26db4148b12.dll",Control_RunDLL3⤵
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Taibwkhszc\gqrhrxif.iia",pZdvJSUPOjmwDc4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Taibwkhszc\gqrhrxif.iia",Control_RunDLL5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.220.1024.0005\FileSyncConfig.exe"C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.220.1024.0005\FileSyncConfig.exe"1⤵
- Modifies registry class
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C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /frequentupdate SCHEDULEDTASK displaylevel=False1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3752-145-0x0000000000000000-mapping.dmp
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memory/3752-161-0x0000000004A20000-0x0000000004A48000-memory.dmpFilesize
160KB
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memory/3752-158-0x0000000004940000-0x0000000004968000-memory.dmpFilesize
160KB
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memory/3752-155-0x0000000004860000-0x0000000004888000-memory.dmpFilesize
160KB
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memory/3752-152-0x0000000004780000-0x00000000047A8000-memory.dmpFilesize
160KB
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memory/3752-149-0x0000000000D10000-0x0000000000D38000-memory.dmpFilesize
160KB
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memory/3752-146-0x0000000000B40000-0x0000000000B68000-memory.dmpFilesize
160KB
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memory/4184-126-0x00000000034C0000-0x00000000034E8000-memory.dmpFilesize
160KB
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memory/4184-139-0x0000000005520000-0x0000000005548000-memory.dmpFilesize
160KB
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memory/4184-135-0x00000000053C0000-0x00000000053E8000-memory.dmpFilesize
160KB
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memory/4184-132-0x0000000005350000-0x0000000005378000-memory.dmpFilesize
160KB
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memory/4184-129-0x00000000051B0000-0x00000000051D8000-memory.dmpFilesize
160KB
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memory/4184-123-0x0000000002F90000-0x0000000002FB8000-memory.dmpFilesize
160KB
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memory/4184-122-0x0000000000000000-mapping.dmp
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memory/4580-118-0x0000000000000000-mapping.dmp
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memory/4580-119-0x0000000004630000-0x0000000004658000-memory.dmpFilesize
160KB
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memory/4620-138-0x0000000000000000-mapping.dmp
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memory/4620-140-0x0000000000700000-0x0000000000728000-memory.dmpFilesize
160KB