Analysis
-
max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
21-12-2022 08:10
Static task
static1
Behavioral task
behavioral1
Sample
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe
Resource
win10v2004-20221111-en
General
-
Target
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe
-
Size
219KB
-
MD5
e0508e5987a2d4062288edea3e728d37
-
SHA1
b5b8fd66e6b915906b1bfa372e1e9a3ea4413d2f
-
SHA256
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13
-
SHA512
eebc1a1815715db08099fce922088924f47fe86a2ea905bfc9636b7adabed0decb4117fb7fcd3f1c5ea495a7f38e29d4a62b42bb089dc1a50987b56d357a12ac
-
SSDEEP
3072:OhOluS4LWS156DDPwWplHCabZt2Mi7zxfROL1T9knTVOWzgKr/so:x+LWLDsWplHd/mz6BT9kxOWzz/
Malware Config
Signatures
-
Detects Smokeloader packer 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2484-133-0x00000000001F0000-0x00000000001F9000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
-
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 42 4016 rundll32.exe 61 4016 rundll32.exe -
Downloads MZ/PE file
-
Executes dropped EXE 1 IoCs
Processes:
8CA.exepid process 1992 8CA.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 4016 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 4016 set thread context of 5044 4016 rundll32.exe rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4540 1992 WerFault.exe 8CA.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.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 enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\Platform Specific Field 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\Update Revision 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 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\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe -
Processes:
description ioc process Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Internet Explorer\Toolbar Set value (int) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 -
Modifies registry class 30 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e0031000000000095557549100054656d7000003a0009000400efbe6b558a6c95557b492e0000000000000000000000000000000000000000000000000075855300540065006d007000000014000000 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Set value (str) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
pid process 2480 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exepid process 2484 c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe 2484 c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 2480 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 2480 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exepid process 2484 c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
Processes:
description pid process Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 Token: SeShutdownPrivilege 2480 Token: SeCreatePagefilePrivilege 2480 -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
rundll32.exepid process 5044 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
pid process 2480 2480 -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
8CA.exerundll32.exedescription pid process target process PID 2480 wrote to memory of 1992 2480 8CA.exe PID 2480 wrote to memory of 1992 2480 8CA.exe PID 2480 wrote to memory of 1992 2480 8CA.exe PID 1992 wrote to memory of 4016 1992 8CA.exe rundll32.exe PID 1992 wrote to memory of 4016 1992 8CA.exe rundll32.exe PID 1992 wrote to memory of 4016 1992 8CA.exe rundll32.exe PID 4016 wrote to memory of 5044 4016 rundll32.exe rundll32.exe PID 4016 wrote to memory of 5044 4016 rundll32.exe rundll32.exe PID 4016 wrote to memory of 5044 4016 rundll32.exe rundll32.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe"C:\Users\Admin\AppData\Local\Temp\c5072261b7b27698e90066a45e204fc5db137427d22133d6a34dfbce68a26e13.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\8CA.exeC:\Users\Admin\AppData\Local\Temp\8CA.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
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
-
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 141243⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1992 -s 2402⤵
- Program crash
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1992 -ip 19921⤵
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\8CA.exeFilesize
1.1MB
MD596e78dc64ec67e77e1738da9b733dc86
SHA1b9dd381c4f1d359ecb73dacd187642db300ab90c
SHA256ff48a20d7f33ff96546a5b6e060f6bb570b4e398d77991d720d60ddf4f30f167
SHA5127533b4fa266e003905638176710aec4203d9f5808505ef4d619eddd4570b2d6b58b99933d976903b60d0b7d23b485778962782f8d84a387316e416dcd62fcaf7
-
C:\Users\Admin\AppData\Local\Temp\8CA.exeFilesize
1.1MB
MD596e78dc64ec67e77e1738da9b733dc86
SHA1b9dd381c4f1d359ecb73dacd187642db300ab90c
SHA256ff48a20d7f33ff96546a5b6e060f6bb570b4e398d77991d720d60ddf4f30f167
SHA5127533b4fa266e003905638176710aec4203d9f5808505ef4d619eddd4570b2d6b58b99933d976903b60d0b7d23b485778962782f8d84a387316e416dcd62fcaf7
-
C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmpFilesize
797KB
MD524925b25552a7d8f1d3292071e545920
SHA1f786e1d40df30f6fed0301d60c823b655f2d6eac
SHA2569931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
SHA512242dbf94b06e67fdf0aac29b2f38ce4929d156c42e2413565f203cda1fdb6458e34b26eeb0151fe4f1914432be28b16d648affa63f20c7b480c54e2d9360fb26
-
C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmpFilesize
797KB
MD524925b25552a7d8f1d3292071e545920
SHA1f786e1d40df30f6fed0301d60c823b655f2d6eac
SHA2569931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
SHA512242dbf94b06e67fdf0aac29b2f38ce4929d156c42e2413565f203cda1fdb6458e34b26eeb0151fe4f1914432be28b16d648affa63f20c7b480c54e2d9360fb26
-
memory/1992-144-0x0000000000400000-0x000000000053E000-memory.dmpFilesize
1.2MB
-
memory/1992-136-0x0000000000000000-mapping.dmp
-
memory/1992-142-0x00000000008B3000-0x00000000009A1000-memory.dmpFilesize
952KB
-
memory/1992-143-0x0000000002360000-0x0000000002490000-memory.dmpFilesize
1.2MB
-
memory/2484-133-0x00000000001F0000-0x00000000001F9000-memory.dmpFilesize
36KB
-
memory/2484-134-0x0000000000400000-0x000000000045F000-memory.dmpFilesize
380KB
-
memory/2484-135-0x0000000000400000-0x000000000045F000-memory.dmpFilesize
380KB
-
memory/2484-132-0x00000000004A2000-0x00000000004B2000-memory.dmpFilesize
64KB
-
memory/4016-146-0x0000000005AA0000-0x00000000061C5000-memory.dmpFilesize
7.1MB
-
memory/4016-151-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-139-0x0000000000000000-mapping.dmp
-
memory/4016-148-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-147-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-149-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-150-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-145-0x0000000005AA0000-0x00000000061C5000-memory.dmpFilesize
7.1MB
-
memory/4016-152-0x0000000004C10000-0x0000000004D50000-memory.dmpFilesize
1.2MB
-
memory/4016-159-0x0000000005AA0000-0x00000000061C5000-memory.dmpFilesize
7.1MB
-
memory/4016-156-0x0000000004C89000-0x0000000004C8B000-memory.dmpFilesize
8KB
-
memory/5044-155-0x0000024712620000-0x0000024712760000-memory.dmpFilesize
1.2MB
-
memory/5044-154-0x0000024712620000-0x0000024712760000-memory.dmpFilesize
1.2MB
-
memory/5044-157-0x0000000000930000-0x0000000000B49000-memory.dmpFilesize
2.1MB
-
memory/5044-158-0x0000024710C50000-0x0000024710E7A000-memory.dmpFilesize
2.2MB
-
memory/5044-153-0x00007FF701756890-mapping.dmp