Analysis
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max time kernel
152s -
max time network
129s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2022 09:12
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
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Target
file.exe
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Size
186KB
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MD5
a1459c570face3f3eae78496ac288a06
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SHA1
6169a9da842c46f53423d1ffc5fed891824664e7
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SHA256
c0b3e8361edf417d689ce08ed889646d0d396bcaa8a52feb1e5dbb6fd39c7432
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SHA512
295df76711999f63d652745af7f21b68d534fe2b90aa1d25cfa38755f2d86d982d7d4486615f4baaa030c8d6fa2df05a4e547a6df7059b7cf4dfb510203c0b3e
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SSDEEP
3072:3BIElgxVBhL8JafGW8wD52poHtv8YxhOAYi0cF73VTBCBkZ:aEyDLgafG/nwkDLFcZ5A2
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
Processes:
resource yara_rule behavioral2/memory/5104-133-0x00000000007D0000-0x00000000007D9000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 58 900 rundll32.exe 62 900 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
87BE.exepid process 3696 87BE.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 900 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 900 set thread context of 2124 900 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 1780 3696 WerFault.exe 87BE.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
file.exedescription ioc process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe -
Checks processor information in registry 2 TTPs 20 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\0\~MHz 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\0\Configuration Data 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\Update Status 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 enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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 queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision 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\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\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\Platform Specific Field 1 rundll32.exe -
Processes:
description ioc process Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Toolbar Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser -
Modifies registry class 30 IoCs
Processes:
rundll32.exedescription ioc process Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000007755a851100054656d7000003a0009000400efbe0c551d9c7755ac512e000000000000000000000000000000000000000000000000006cf87f00540065006d007000000014000000 Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
pid process 2824 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
file.exepid process 5104 file.exe 5104 file.exe 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 2824 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 2824 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
file.exepid process 5104 file.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
Processes:
description pid process Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 Token: SeShutdownPrivilege 2824 Token: SeCreatePagefilePrivilege 2824 -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
rundll32.exepid process 2124 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
pid process 2824 2824 -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
87BE.exerundll32.exedescription pid process target process PID 2824 wrote to memory of 3696 2824 87BE.exe PID 2824 wrote to memory of 3696 2824 87BE.exe PID 2824 wrote to memory of 3696 2824 87BE.exe PID 3696 wrote to memory of 900 3696 87BE.exe rundll32.exe PID 3696 wrote to memory of 900 3696 87BE.exe rundll32.exe PID 3696 wrote to memory of 900 3696 87BE.exe rundll32.exe PID 900 wrote to memory of 2124 900 rundll32.exe rundll32.exe PID 900 wrote to memory of 2124 900 rundll32.exe rundll32.exe PID 900 wrote to memory of 2124 900 rundll32.exe rundll32.exe
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:5104
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C:\Users\Admin\AppData\Local\Temp\87BE.exeC:\Users\Admin\AppData\Local\Temp\87BE.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Uayqupoehp.tmp",Rrptfe2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:900 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 142053⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:2124 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3696 -s 5282⤵
- Program crash
PID:1780
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3696 -ip 36961⤵PID:4324
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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:3252
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.0MB
MD5113c46ff43811083942746787c74670e
SHA14ccf9e38b219780b732f829a67bf4737a58a80bf
SHA2568bffaa7522696c6760727929ec1c15b5aa346333f2c38833d23fbd5ed5765f13
SHA512d9cca0c584c19a0ef8f247a865f8bb9ccb0d92f577ca32597c21fd15c884d14fc8d9c81fc0f0ad43f182a48b72912ef4d04e9c633eb9d3cbf84bb8e36d885488
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Filesize
1.0MB
MD5113c46ff43811083942746787c74670e
SHA14ccf9e38b219780b732f829a67bf4737a58a80bf
SHA2568bffaa7522696c6760727929ec1c15b5aa346333f2c38833d23fbd5ed5765f13
SHA512d9cca0c584c19a0ef8f247a865f8bb9ccb0d92f577ca32597c21fd15c884d14fc8d9c81fc0f0ad43f182a48b72912ef4d04e9c633eb9d3cbf84bb8e36d885488
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Filesize
774KB
MD5d5e88f35e214f2dff51a7d494316bac2
SHA16306dfa71c4e32dede210631cf90732693c0afcf
SHA256f1828a7b26be78bb27df25b98762eb7dd7e49ee8582d5eee42ded05b0eebc1e4
SHA512ff167f0379173f976e3f91f41f6c88e67b12dfb0386b66d19f78d3aa3f11534cf2ce1c1d753ada0133cf291adca7ad8367087b791a5c05eaf371dd877ebcce1d
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Filesize
774KB
MD5d5e88f35e214f2dff51a7d494316bac2
SHA16306dfa71c4e32dede210631cf90732693c0afcf
SHA256f1828a7b26be78bb27df25b98762eb7dd7e49ee8582d5eee42ded05b0eebc1e4
SHA512ff167f0379173f976e3f91f41f6c88e67b12dfb0386b66d19f78d3aa3f11534cf2ce1c1d753ada0133cf291adca7ad8367087b791a5c05eaf371dd877ebcce1d