Analysis
- max time kernel
151s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
21/11/2022, 09:05
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
21 signatures
150 seconds
General
- Target file.exe
- Size 164KB
- Sample221121-k1622scd79
- SHA256 2d21bf91c9cecf5e433256a777a9c86b093e742e76ec01bed5ae777e315fb193
- MD5 ef6cc75712883b02b9433f7321bd42b7
- SHA1 45e2272bd87defe3525ab18d61b90d3e7c47af18
- SHA512 465c1da40524e9341b7bdf3b9b4e9f05791d6d24c1221ca770f9a3e458283b9ed8c45790b440470900a182f6fea179b84808c06ee0cef9a905c0717af6ccaa12
- SSDEEP 3072:+9jFnJk3m54BbEOp5jZUIMGfPhRZ79RvWX2skKhvt4GuYjq:+7k3LbhqwBvmXvtPuL
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/1496-133-0x0000000000720000-0x0000000000729000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 5 IoCs
flow pid Process 46 4212 rundll32.exe 47 4212 rundll32.exe 60 4212 rundll32.exe 71 4212 rundll32.exe 106 4212 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 4540 399E.exe - Loads dropped DLL 1 IoCs
pid Process 4212 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4212 set thread context of 4656 4212 rundll32.exe 90 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
pid pid_target Process procid_target 2292 4540 WerFault.exe 82 - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Checks processor information in registry 2 TTPs 21 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 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision 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\ProcessorNameString rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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\1\VendorIdentifier 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\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000007555d050100054656d7000003a0009000400efbe0c55ec987555d4502e0000000000000000000000000000000000000000000000000009310201540065006d007000000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2376 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1496 file.exe 1496 file.exe 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found 2376 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2376 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1496 file.exe - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found Token: SeShutdownPrivilege 2376 Process not Found Token: SeCreatePagefilePrivilege 2376 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4656 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2376 Process not Found 2376 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2376 wrote to memory of 4540 2376 Process not Found 82 PID 2376 wrote to memory of 4540 2376 Process not Found 82 PID 2376 wrote to memory of 4540 2376 Process not Found 82 PID 4540 wrote to memory of 4212 4540 399E.exe 84 PID 4540 wrote to memory of 4212 4540 399E.exe 84 PID 4540 wrote to memory of 4212 4540 399E.exe 84 PID 4212 wrote to memory of 4656 4212 rundll32.exe 90 PID 4212 wrote to memory of 4656 4212 rundll32.exe 90 PID 4212 wrote to memory of 4656 4212 rundll32.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1496
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C:\Users\Admin\AppData\Local\Temp\399E.exeC:\Users\Admin\AppData\Local\Temp\399E.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4540 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp",Tiuqiiueaur2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4212 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 224943⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4656
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 5282⤵
- Program crash
PID:2292
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4540 -ip 45401⤵PID:4244
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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:4396
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\399E.exe
- Size 987KB
- SHA256 12122850df6d0a8ac5b00b54e6ee8feef156732ba8179d88617dbc1d9a32d876
- MD5 5c12871274997b54ea703c8f6345bc8f
- SHA1 950ee4c725e2bdbdbe7328a4602ce61c2311b6c0
- SHA512 bae79ed9b67b955b39c23fa9cfadf7d8570796b758f5a245811a90f6e8d59956ffe75608a52ba9fc4dad7c6aa6ffb5851d249ed91eb62d21d1df59b4dbe14764
- SSDEEP 12288:s/tpBtFY0w7KA3H6ZrSiqPODehRXf5n5XYYzBgE9l1KRnNrT/zWGB6Cy08X2QA5g:s/tLcX3GKTXgQORnB7ai1QAmtG
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\399E.exe
- Size 987KB
- SHA256 12122850df6d0a8ac5b00b54e6ee8feef156732ba8179d88617dbc1d9a32d876
- MD5 5c12871274997b54ea703c8f6345bc8f
- SHA1 950ee4c725e2bdbdbe7328a4602ce61c2311b6c0
- SHA512 bae79ed9b67b955b39c23fa9cfadf7d8570796b758f5a245811a90f6e8d59956ffe75608a52ba9fc4dad7c6aa6ffb5851d249ed91eb62d21d1df59b4dbe14764
- SSDEEP 12288:s/tpBtFY0w7KA3H6ZrSiqPODehRXf5n5XYYzBgE9l1KRnNrT/zWGB6Cy08X2QA5g:s/tLcX3GKTXgQORnB7ai1QAmtG
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp
- Size 752KB
- SHA256 6ecc725eab418e27d8fa2f1031fce6bc119d677b8d72e0447050a87489e8e0ca
- MD5 ad4fe6dd11eca5f7254e0e00ed47d984
- SHA1 e809de0322d74dd4642f215f46f22b3a9b7caa21
- SHA512 d09f4f9a94f34fe1a6f5fe78ec32e91026fe07263183d4d41c4a51cfa7ee5fbc1b38d2ebeda20a717a2a730af011d73d113decb3ae2fe9db50530c095cf33ea3
- SSDEEP 12288:zfSxtWGq0esNiHPcc92qLSl6Tw3he78O48BG7QvUaDkndA+OmV8YqOgFkVd4FGJC:z6x4ff3Sxg5/R5ou7/P795pJc
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp
- Size 752KB
- SHA256 6ecc725eab418e27d8fa2f1031fce6bc119d677b8d72e0447050a87489e8e0ca
- MD5 ad4fe6dd11eca5f7254e0e00ed47d984
- SHA1 e809de0322d74dd4642f215f46f22b3a9b7caa21
- SHA512 d09f4f9a94f34fe1a6f5fe78ec32e91026fe07263183d4d41c4a51cfa7ee5fbc1b38d2ebeda20a717a2a730af011d73d113decb3ae2fe9db50530c095cf33ea3
- SSDEEP 12288:zfSxtWGq0esNiHPcc92qLSl6Tw3he78O48BG7QvUaDkndA+OmV8YqOgFkVd4FGJC:z6x4ff3Sxg5/R5ou7/P795pJc
- MD5 SHA1 SHA512 SSDEEP