Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
19-12-2022 20:27
Static task
static1
Behavioral task
behavioral1
Sample
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe
Resource
win10v2004-20221111-en
General
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Target
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe
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Size
214KB
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MD5
816287b83f2bcba44a103e227868ef1f
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SHA1
4a57ff432e2f83bdbdb5c1d880728e02a47262bb
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SHA256
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc
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SHA512
0235eaf331a51d8dccb1352769eb72545c36ead5ce5b988a279c795dc840cdc25a750b5b15c185df95fd4523bca45ab843a8f0c89baf4d2bad6ad3e0d5d062ea
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SSDEEP
3072:IX4oLOH3aR6hPmyakx2fb+Siha+onfhe+aNRAtOba+oN2ZEzjcbImdzmuX:IIoLOHrhPmmx2T+SMinpex0RNjjcbXF
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4584-133-0x00000000005A0000-0x00000000005A9000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Blocklisted process makes network request 4 IoCs
Processes:
rundll32.exeflow pid process 38 2096 rundll32.exe 40 2096 rundll32.exe 48 2096 rundll32.exe 49 2096 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
F91A.exepid process 4796 F91A.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2096 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 2096 set thread context of 4344 2096 rundll32.exe rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 5012 4796 WerFault.exe F91A.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe -
Checks processor information in registry 2 TTPs 18 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision 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\Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe -
Processes:
description ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Toolbar Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 -
Modifies registry class 30 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e00310000000000935589ab100054656d7000003a0009000400efbe6b55586c93558eab2e00000000000000000000000000000000000000000000000000737f1e01540065006d007000000014000000 Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Set value (data) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
pid process 2644 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exepid process 4584 c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe 4584 c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 2644 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 2644 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exepid process 4584 c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe -
Suspicious use of AdjustPrivilegeToken 14 IoCs
Processes:
description pid process Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 Token: SeShutdownPrivilege 2644 Token: SeCreatePagefilePrivilege 2644 -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
rundll32.exepid process 4344 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
pid process 2644 2644 -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
F91A.exerundll32.exedescription pid process target process PID 2644 wrote to memory of 4796 2644 F91A.exe PID 2644 wrote to memory of 4796 2644 F91A.exe PID 2644 wrote to memory of 4796 2644 F91A.exe PID 4796 wrote to memory of 2096 4796 F91A.exe rundll32.exe PID 4796 wrote to memory of 2096 4796 F91A.exe rundll32.exe PID 4796 wrote to memory of 2096 4796 F91A.exe rundll32.exe PID 2096 wrote to memory of 4344 2096 rundll32.exe rundll32.exe PID 2096 wrote to memory of 4344 2096 rundll32.exe rundll32.exe PID 2096 wrote to memory of 4344 2096 rundll32.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe"C:\Users\Admin\AppData\Local\Temp\c31618dee7fb1f9d3b5cdc3fd42a8a498695e062404d1a5244c3b09466e912fc.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4584
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C:\Users\Admin\AppData\Local\Temp\F91A.exeC:\Users\Admin\AppData\Local\Temp\F91A.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmp",Wufaiiuuye2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2096 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 141303⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4344 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 5482⤵
- Program crash
PID:5012
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4796 -ip 47961⤵PID:308
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1748
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.1MB
MD5b37a57c505e70d01d3b135a7a578652d
SHA1558ff0476094928488e2104c30f7d51526842f98
SHA25636cfa0e234d289738ca43878f695c4ed58de0e2db30edb6521d96c881ab14c7f
SHA51262aa6d56c0dec7b43b9c44e60c68b4e56173e4910828f07e9769b2c19621eb1cc7ae6ef76509e56136622c90cd8b8510b28b4c4d5a528100691a1a279c2b1d9d
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Filesize
1.1MB
MD5b37a57c505e70d01d3b135a7a578652d
SHA1558ff0476094928488e2104c30f7d51526842f98
SHA25636cfa0e234d289738ca43878f695c4ed58de0e2db30edb6521d96c881ab14c7f
SHA51262aa6d56c0dec7b43b9c44e60c68b4e56173e4910828f07e9769b2c19621eb1cc7ae6ef76509e56136622c90cd8b8510b28b4c4d5a528100691a1a279c2b1d9d
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Filesize
797KB
MD524925b25552a7d8f1d3292071e545920
SHA1f786e1d40df30f6fed0301d60c823b655f2d6eac
SHA2569931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
SHA512242dbf94b06e67fdf0aac29b2f38ce4929d156c42e2413565f203cda1fdb6458e34b26eeb0151fe4f1914432be28b16d648affa63f20c7b480c54e2d9360fb26
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Filesize
797KB
MD524925b25552a7d8f1d3292071e545920
SHA1f786e1d40df30f6fed0301d60c823b655f2d6eac
SHA2569931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
SHA512242dbf94b06e67fdf0aac29b2f38ce4929d156c42e2413565f203cda1fdb6458e34b26eeb0151fe4f1914432be28b16d648affa63f20c7b480c54e2d9360fb26