Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
19/11/2022, 02:13
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
22 signatures
150 seconds
General
- Target file.exe
- Size 335KB
- Sample221119-cnd7hadf31
- SHA256 88182cc6b81beec27375b9258a62903fc613f0b2e20f32c422b40329ca99fa1c
- MD5 7b4224f4b1acd160a1fe165562884131
- SHA1 a8cc2c9140106ec7ec1b9b3fed25322ab0f7275d
- SHA512 c521461de226579b4653aa68db05ea9800c142b53e66c10b5cfce42b4f4c6124df3e3201140babdfd93ccda99c20bf08676dd777a7da1a3eba39dfd6db4d96fa
- SSDEEP 6144:8+AvkzL0+GaAahqivOLpMf5Vvlm5rENYh+3oQ9gOU+fzYBb6:UvSrGaAahqPLifz04F9gT6
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/3540-133-0x0000000000030000-0x0000000000039000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 38 1236 rundll32.exe 73 1236 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 3084 7EF4.exe - Loads dropped DLL 1 IoCs
pid Process 1236 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1236 set thread context of 3904 1236 rundll32.exe 93 - 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 4460 3084 WerFault.exe 89 - 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 22 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 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\Platform Specific Field 1 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\1\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\0\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision rundll32.exe Key value enumerated \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\0\~MHz 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\Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data 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\~MHz rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_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 Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000007355c211100054656d7000003a0009000400efbe21550a587355c3112e00000000000000000000000000000000000000000000000000a5dbec00540065006d007000000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2440 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3540 file.exe 3540 file.exe 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found 2440 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2440 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3540 file.exe - Suspicious use of AdjustPrivilegeToken 16 IoCs
description pid Process Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found Token: SeShutdownPrivilege 2440 Process not Found Token: SeCreatePagefilePrivilege 2440 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3904 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2440 Process not Found 2440 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 2440 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2440 wrote to memory of 3084 2440 Process not Found 89 PID 2440 wrote to memory of 3084 2440 Process not Found 89 PID 2440 wrote to memory of 3084 2440 Process not Found 89 PID 3084 wrote to memory of 1236 3084 7EF4.exe 90 PID 3084 wrote to memory of 1236 3084 7EF4.exe 90 PID 3084 wrote to memory of 1236 3084 7EF4.exe 90 PID 1236 wrote to memory of 3904 1236 rundll32.exe 93 PID 1236 wrote to memory of 3904 1236 rundll32.exe 93 PID 1236 wrote to memory of 3904 1236 rundll32.exe 93
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:3540
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C:\Users\Admin\AppData\Local\Temp\7EF4.exeC:\Users\Admin\AppData\Local\Temp\7EF4.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3084 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qieppoeedtppeh.tmp",Risetpqpdpi2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1236 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 190953⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:3904
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 5362⤵
- Program crash
PID:4460
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3084 -ip 30841⤵PID:1184
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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:4432
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\7EF4.exe
- Size 1.2MB
- SHA256 b92ac3c77eacb6955e2ccec9943821d016a2593b64ac608bd4c98f61b795f0f7
- MD5 578ecff2823a463b85cd7888931e37e0
- SHA1 e5dc6560471eb54c6f1700aef624e4f316f0332d
- SHA512 39f599943edb237e79b51fdba72c80bca2063d2e8642dea9ebacd9f1403e96c8cc190d32db8e1c1b44bd292042d0550d106ef39cb0850c91aeafe6d9209b499a
- SSDEEP 24576:aHazGCZIfB1kIJpyWQ9GkqqxGL/Ut/njK9gT6:aHOGCDplGkqqxG7s/jPT6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\7EF4.exe
- Size 1.2MB
- SHA256 b92ac3c77eacb6955e2ccec9943821d016a2593b64ac608bd4c98f61b795f0f7
- MD5 578ecff2823a463b85cd7888931e37e0
- SHA1 e5dc6560471eb54c6f1700aef624e4f316f0332d
- SHA512 39f599943edb237e79b51fdba72c80bca2063d2e8642dea9ebacd9f1403e96c8cc190d32db8e1c1b44bd292042d0550d106ef39cb0850c91aeafe6d9209b499a
- SSDEEP 24576:aHazGCZIfB1kIJpyWQ9GkqqxGL/Ut/njK9gT6:aHOGCDplGkqqxG7s/jPT6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Qieppoeedtppeh.tmp
- Size 802KB
- SHA256 a5555d31a4f07e83f86100ce6f8242feccaa5157b10ccef2b48ab13dfac06ffd
- MD5 759e32c67ea3441582e9573471496f41
- SHA1 c8e8378787184363d256b91417e60f09ccb4258d
- SHA512 5c5d8f5b0aca6a68ea7bf7a30a7fe8afc204514e76cf13c6d23eb0e2bcc6925dd36d65fde81a893a338ec61dfb5f0c2da1e0c4cf1c52856e5df9511ceca741d4
- SSDEEP 12288:s62GT1lywI5iwASQKh1lWd7EwABdUmXDbcg+n2YGtO1Ov1xM3rw7ra6omqV:Fjl2iwaEwSD12O9H5dI
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Qieppoeedtppeh.tmp
- Size 802KB
- SHA256 a5555d31a4f07e83f86100ce6f8242feccaa5157b10ccef2b48ab13dfac06ffd
- MD5 759e32c67ea3441582e9573471496f41
- SHA1 c8e8378787184363d256b91417e60f09ccb4258d
- SHA512 5c5d8f5b0aca6a68ea7bf7a30a7fe8afc204514e76cf13c6d23eb0e2bcc6925dd36d65fde81a893a338ec61dfb5f0c2da1e0c4cf1c52856e5df9511ceca741d4
- SSDEEP 12288:s62GT1lywI5iwASQKh1lWd7EwABdUmXDbcg+n2YGtO1Ov1xM3rw7ra6omqV:Fjl2iwaEwSD12O9H5dI
- MD5 SHA1 SHA512 SSDEEP