Analysis
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max time kernel
150s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
15/02/2023, 11:35
Static task
static1
Behavioral task
behavioral1
Sample
decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
21 signatures
150 seconds
General
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Target
decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe
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Size
195KB
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MD5
5fb7c7cd72e34ddd1d3705ee5293c5d0
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SHA1
0c31ac2f62b347c386a23eebe45e43d761df8044
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SHA256
decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148
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SHA512
138559d29fbc5f7227ad4262bc052c2f161f6b0c858418874313e22543e63597b602a26d644484a70cb2616745300f72977680b0629a7bd0a7e19250c515715a
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SSDEEP
3072:trH6my7CYONNSEhkQao85deBz/SihYCd+8SNv8kR52S2VEjV:tD6cYONNNSFo8yMCd/2v8kH2Sjj
Score
10/10
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral1/memory/4400-133-0x0000000000700000-0x0000000000709000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Blocklisted process makes network request 1 IoCs
flow pid Process 69 632 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 3112 5F75.exe -
Loads dropped DLL 2 IoCs
pid Process 632 rundll32.exe 632 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 632 set thread context of 3568 632 rundll32.exe 93 -
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
pid pid_target Process procid_target 764 3112 WerFault.exe 87 -
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 decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe -
Checks processor information in registry 2 TTPs 25 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\VendorIdentifier rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\Platform Specific Field 1 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\0 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 Status 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\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz 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\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier 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\Update Revision 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\~MHz rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet 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\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found -
Modifies registry class 30 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found 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" Process not Found 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" Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found 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 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found 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\NodeSlots Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found 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 = 4e003100000000004f569664100054656d7000003a0009000400efbe0c551d9c4f569b642e0000000000000000000000000000000000000000000000000076aea500540065006d007000000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings 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 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 Process not Found 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 Process not Found -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2704 Process not Found -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4400 decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe 4400 decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found 2704 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2704 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4400 decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found Token: SeShutdownPrivilege 2704 Process not Found Token: SeCreatePagefilePrivilege 2704 Process not Found -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3568 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2704 Process not Found 2704 Process not Found -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2704 wrote to memory of 3112 2704 Process not Found 87 PID 2704 wrote to memory of 3112 2704 Process not Found 87 PID 2704 wrote to memory of 3112 2704 Process not Found 87 PID 3112 wrote to memory of 632 3112 5F75.exe 89 PID 3112 wrote to memory of 632 3112 5F75.exe 89 PID 3112 wrote to memory of 632 3112 5F75.exe 89 PID 632 wrote to memory of 3568 632 rundll32.exe 93 PID 632 wrote to memory of 3568 632 rundll32.exe 93 PID 632 wrote to memory of 3568 632 rundll32.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe"C:\Users\Admin\AppData\Local\Temp\decaa53dfe4684d0d4aa1ebfcda3a589c5328056117f31d53cfb8998ca182148.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4400
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C:\Users\Admin\AppData\Local\Temp\5F75.exeC:\Users\Admin\AppData\Local\Temp\5F75.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3112 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Ruifriwreh.dll,start2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:632 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 141773⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:3568
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 6962⤵
- Program crash
PID:764
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3112 -ip 31121⤵PID:3000
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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:3388
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.6MB
MD578f6713100b8857defaf4426ee337535
SHA185eeb2b16d6e01a12badb3f7bf1d7564b31c1c69
SHA256ef0717bb59204e9f4de07c202a9581414aca433d647588c83ac7f19dee8388a3
SHA512c6632f28f75d008b1d81125bd7424b670740caae6fcdd659202abe6b6dfcf8f28b086218bb83b540857428da7d1fe9147278a43110517e79d82d2473590f182f
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Filesize
3.6MB
MD578f6713100b8857defaf4426ee337535
SHA185eeb2b16d6e01a12badb3f7bf1d7564b31c1c69
SHA256ef0717bb59204e9f4de07c202a9581414aca433d647588c83ac7f19dee8388a3
SHA512c6632f28f75d008b1d81125bd7424b670740caae6fcdd659202abe6b6dfcf8f28b086218bb83b540857428da7d1fe9147278a43110517e79d82d2473590f182f
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Filesize
4.3MB
MD50ab9c507cda0f962daa8bf006cc94a98
SHA160d7d844e93721639c5d9db5069ca577bd10384a
SHA256c217eebfef5524a2ba830653657ddbbfee92865abd84275d0376200995470480
SHA5123053192ccb55430f008cc6796e460f3d9b51770539c90240b03675253da1a374f2124093db02eb9b11f987e6a9e4f8f0cbd0fb5de7192c51a8efc518c89bfe0b
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Filesize
4.3MB
MD50ab9c507cda0f962daa8bf006cc94a98
SHA160d7d844e93721639c5d9db5069ca577bd10384a
SHA256c217eebfef5524a2ba830653657ddbbfee92865abd84275d0376200995470480
SHA5123053192ccb55430f008cc6796e460f3d9b51770539c90240b03675253da1a374f2124093db02eb9b11f987e6a9e4f8f0cbd0fb5de7192c51a8efc518c89bfe0b
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Filesize
4.3MB
MD50ab9c507cda0f962daa8bf006cc94a98
SHA160d7d844e93721639c5d9db5069ca577bd10384a
SHA256c217eebfef5524a2ba830653657ddbbfee92865abd84275d0376200995470480
SHA5123053192ccb55430f008cc6796e460f3d9b51770539c90240b03675253da1a374f2124093db02eb9b11f987e6a9e4f8f0cbd0fb5de7192c51a8efc518c89bfe0b