Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
14/11/2022, 22:27
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-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 233KB
- Sample221114-2c5bzsdh95
- SHA256 99cf3191af8b62af5fdaf338ce2dfb3d5301a63eea5422827d7ca015f460d206
- MD5 0ef19e76d10430b6baaa262218162a10
- SHA1 eae1161378ea70950e36f9e19f306ab0d7041a1b
- SHA512 488bccfeada593be770133b4ca1be1d496763a174d80b0e8ee38e726b807eb70dcefdd56e3d777388eec4430d6f459bc868c37a861d875d7038b807a7e8c7d58
- SSDEEP 3072:DXO5i2tsLTUItbfGJlcxzY5tKZarHvnl8f+/LVRCEXpHN3nv69+1oPn:745sLTZbfecY3KGHtYu5RnXpHtnB1o
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/4760-133-0x00000000009F0000-0x00000000009F9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 74 2132 rundll32.exe 84 2132 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 2156 8E07.exe - Loads dropped DLL 2 IoCs
pid Process 2132 rundll32.exe 2132 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2132 set thread context of 520 2132 rundll32.exe 91 - 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 3232 2156 WerFault.exe 86 - 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 19 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\0\VendorIdentifier 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\Platform Specific Field 1 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\ProcessorNameString 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\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision 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\0\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000006e559cbb100054656d7000003a0009000400efbe0c5519996e55a3bb2e000000000000000000000000000000000000000000000000000095a800540065006d007000000014000000 Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2016 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4760 file.exe 4760 file.exe 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found 2016 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2016 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4760 file.exe - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found Token: SeShutdownPrivilege 2016 Process not Found Token: SeCreatePagefilePrivilege 2016 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 520 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2016 Process not Found 2016 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2016 wrote to memory of 2156 2016 Process not Found 86 PID 2016 wrote to memory of 2156 2016 Process not Found 86 PID 2016 wrote to memory of 2156 2016 Process not Found 86 PID 2156 wrote to memory of 2132 2156 8E07.exe 87 PID 2156 wrote to memory of 2132 2156 8E07.exe 87 PID 2156 wrote to memory of 2132 2156 8E07.exe 87 PID 2132 wrote to memory of 520 2132 rundll32.exe 91 PID 2132 wrote to memory of 520 2132 rundll32.exe 91 PID 2132 wrote to memory of 520 2132 rundll32.exe 91
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:4760
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C:\Users\Admin\AppData\Local\Temp\8E07.exeC:\Users\Admin\AppData\Local\Temp\8E07.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2156 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Hefurhy.dll,start2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2132 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 163343⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:520
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 5202⤵
- Program crash
PID:3232
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2156 -ip 21561⤵PID:2208
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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:2664
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\8E07.exe
- Size 2.9MB
- SHA256 b6a55871372c52bea916df12fb63f10760f053a17e9a948dceb9bffff999d3a8
- MD5 67e76ec42da965ea102d4514de4f7fac
- SHA1 135100e5dfa32dcaa63cf3640d2ac157ade44445
- SHA512 36605b690482e1318d04b78c61d37493d5af64222a40ebebe5b7895f210c1022ff52ddec9d0048f459a3354b5df579f9f0f8809762ce7173f59d30ec889a75d1
- SSDEEP 49152:O/duvthcYtDWWYeklOnlrHvW58wHNTBtnfTifjKKzVi6kx/8jESMqonLSPQ4Rx/E:O/dg4YtDWWYewOlrqjn7ifjKwRkx/s6/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\8E07.exe
- Size 2.9MB
- SHA256 b6a55871372c52bea916df12fb63f10760f053a17e9a948dceb9bffff999d3a8
- MD5 67e76ec42da965ea102d4514de4f7fac
- SHA1 135100e5dfa32dcaa63cf3640d2ac157ade44445
- SHA512 36605b690482e1318d04b78c61d37493d5af64222a40ebebe5b7895f210c1022ff52ddec9d0048f459a3354b5df579f9f0f8809762ce7173f59d30ec889a75d1
- SSDEEP 49152:O/duvthcYtDWWYeklOnlrHvW58wHNTBtnfTifjKKzVi6kx/8jESMqonLSPQ4Rx/E:O/dg4YtDWWYewOlrqjn7ifjKwRkx/s6/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Hefurhy.dll
- Size 4.3MB
- SHA256 578019eade68b3547307319be24e7eeda7a181bf578c79d6a3e065c54ce2e470
- MD5 b8b06bfcd3fc2b6cf4c3be10da287aa1
- SHA1 69a296a3cc1bdb9a383a7bcd28085ddd6d34b2e8
- SHA512 39d812460a15ea199df763dc991cca0f7eae7e503fdafed19dc0a01f733e28a177efa1b1cdfc52882305f255a326735f6f1c1a2bcf28bd0d67998a62923f71d8
- SSDEEP 98304:EUIXwM4ngoq2G+3xqvcnBQX5Id/8cfiS:EUbM4nPI+3xKjX5Id/BfP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Hefurhy.dll
- Size 4.3MB
- SHA256 578019eade68b3547307319be24e7eeda7a181bf578c79d6a3e065c54ce2e470
- MD5 b8b06bfcd3fc2b6cf4c3be10da287aa1
- SHA1 69a296a3cc1bdb9a383a7bcd28085ddd6d34b2e8
- SHA512 39d812460a15ea199df763dc991cca0f7eae7e503fdafed19dc0a01f733e28a177efa1b1cdfc52882305f255a326735f6f1c1a2bcf28bd0d67998a62923f71d8
- SSDEEP 98304:EUIXwM4ngoq2G+3xqvcnBQX5Id/8cfiS:EUbM4nPI+3xKjX5Id/BfP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Hefurhy.dll
- Size 4.3MB
- SHA256 578019eade68b3547307319be24e7eeda7a181bf578c79d6a3e065c54ce2e470
- MD5 b8b06bfcd3fc2b6cf4c3be10da287aa1
- SHA1 69a296a3cc1bdb9a383a7bcd28085ddd6d34b2e8
- SHA512 39d812460a15ea199df763dc991cca0f7eae7e503fdafed19dc0a01f733e28a177efa1b1cdfc52882305f255a326735f6f1c1a2bcf28bd0d67998a62923f71d8
- SSDEEP 98304:EUIXwM4ngoq2G+3xqvcnBQX5Id/8cfiS:EUbM4nPI+3xKjX5Id/BfP
- MD5 SHA1 SHA512 SSDEEP