Analysis
- max time kernel
151s - max time network
109s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system - submitted
23/01/2023, 19:09
Static task
static1
Behavioral task
behavioral1
Sample
5577a97d0c2c1e2930eb1aa36b4d0ebb.exe
Resource
win7-20220812-en
17 signatures
150 seconds
Behavioral task
behavioral2
Sample
5577a97d0c2c1e2930eb1aa36b4d0ebb.exe
Resource
win10v2004-20221111-en
9 signatures
150 seconds
General
- Target 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe
- Size 3.6MB
- Sample230123-xtvfwsge5v
- SHA256 217859f8f952a9de8aeb91dc175ef6dad10142327bb6111fafa2b4523161d178
- MD5 5577a97d0c2c1e2930eb1aa36b4d0ebb
- SHA1 b36fb961843a193336218042cecd2c1d7e7e6980
- SHA512 26360e5398fae2e2abea08c1ad9ef7fa3618a406b7cefec9db7c87380b4c8aec262c64768a5d0d7e9245c7a7e6401ccf7b289129aca40e520527f2715387bb28
- SSDEEP 98304:5lJAVMDiGDPfh7UYmWmw9GArAaIEBNz6CaRl:LJai7XmO5Ja
- MD5 SHA1 SHA512 SSDEEP
Score
8/10
Malware Config
Signatures
- Blocklisted process makes network request 4 IoCs
flow pid Process 3 1328 rundll32.exe 5 1328 rundll32.exe 7 1328 rundll32.exe 10 1328 rundll32.exe - Loads dropped DLL 4 IoCs
pid Process 1328 rundll32.exe 1328 rundll32.exe 1328 rundll32.exe 1328 rundll32.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts rundll32.exe - Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1328 set thread context of 1192 1328 rundll32.exe 29 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 27 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\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Signature rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform ID rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Platform ID rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Signature rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Signature rundll32.exe - Modifies registry class 24 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 7e0074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f3c0008000400efbe00000000000000002a000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4a0031000000000000000000102054656d700000360008000400efbe00000000000000002a00000000000000000000000000000000000000000000000000540065006d007000000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 4c003100000000000000000010004c6f63616c00380008000400efbe00000000000000002a000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 rundll32.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1328 rundll32.exe 1328 rundll32.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1328 rundll32.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1192 rundll32.exe 1328 rundll32.exe - Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 856 wrote to memory of 1328 856 5577a97d0c2c1e2930eb1aa36b4d0ebb.exe 26 PID 1328 wrote to memory of 1192 1328 rundll32.exe 29 PID 1328 wrote to memory of 1192 1328 rundll32.exe 29 PID 1328 wrote to memory of 1192 1328 rundll32.exe 29 PID 1328 wrote to memory of 1192 1328 rundll32.exe 29 PID 1328 wrote to memory of 1192 1328 rundll32.exe 29 PID 1328 wrote to memory of 1952 1328 rundll32.exe 31 PID 1328 wrote to memory of 1952 1328 rundll32.exe 31 PID 1328 wrote to memory of 1952 1328 rundll32.exe 31 PID 1328 wrote to memory of 1952 1328 rundll32.exe 31 PID 1328 wrote to memory of 1620 1328 rundll32.exe 33 PID 1328 wrote to memory of 1620 1328 rundll32.exe 33 PID 1328 wrote to memory of 1620 1328 rundll32.exe 33 PID 1328 wrote to memory of 1620 1328 rundll32.exe 33 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\5577a97d0c2c1e2930eb1aa36b4d0ebb.exe"C:\Users\Admin\AppData\Local\Temp\5577a97d0c2c1e2930eb1aa36b4d0ebb.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:856 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll,start2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1328 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 307083⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1192
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:1952
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:1620
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
- Size 4.3MB
- SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
- MD5 bc6ee694b4107a975cc10304ea4dac2e
- SHA1 2c74deacd7fcdfee0d7d4ca39d56deb2bd56fc8f
- SHA512 52e4451f24a7df825fe67544d351b4204c8a6f2cd116da4cb3126cb87f07136306650a9559a20c59e2584811cbf1e99d66ae649ccc8a4ab6212d81056dd6ecf6
- SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF4T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
- Size 4.3MB
- SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
- MD5 bc6ee694b4107a975cc10304ea4dac2e
- SHA1 2c74deacd7fcdfee0d7d4ca39d56deb2bd56fc8f
- SHA512 52e4451f24a7df825fe67544d351b4204c8a6f2cd116da4cb3126cb87f07136306650a9559a20c59e2584811cbf1e99d66ae649ccc8a4ab6212d81056dd6ecf6
- SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF4T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
- Size 4.3MB
- SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
- MD5 bc6ee694b4107a975cc10304ea4dac2e
- SHA1 2c74deacd7fcdfee0d7d4ca39d56deb2bd56fc8f
- SHA512 52e4451f24a7df825fe67544d351b4204c8a6f2cd116da4cb3126cb87f07136306650a9559a20c59e2584811cbf1e99d66ae649ccc8a4ab6212d81056dd6ecf6
- SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF4T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
- Size 4.3MB
- SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
- MD5 bc6ee694b4107a975cc10304ea4dac2e
- SHA1 2c74deacd7fcdfee0d7d4ca39d56deb2bd56fc8f
- SHA512 52e4451f24a7df825fe67544d351b4204c8a6f2cd116da4cb3126cb87f07136306650a9559a20c59e2584811cbf1e99d66ae649ccc8a4ab6212d81056dd6ecf6
- SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF4T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
- Size 4.3MB
- SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
- MD5 bc6ee694b4107a975cc10304ea4dac2e
- SHA1 2c74deacd7fcdfee0d7d4ca39d56deb2bd56fc8f
- SHA512 52e4451f24a7df825fe67544d351b4204c8a6f2cd116da4cb3126cb87f07136306650a9559a20c59e2584811cbf1e99d66ae649ccc8a4ab6212d81056dd6ecf6
- SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF4T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
- MD5 SHA1 SHA512 SSDEEP