Analysis
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max time kernel
150s -
max time network
105s -
platform
windows10-1703_x64 -
resource
win10-20220901-en -
resource tags
arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system -
submitted
19-12-2022 08:23
Static task
static1
Behavioral task
behavioral1
Sample
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe
Resource
win10-20220901-en
General
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Target
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe
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Size
307KB
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MD5
1ac28017236cafb30ae46b8cfcdd3aff
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SHA1
aa0ecc6413d85ed7211628f45f741cfa1f338af5
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SHA256
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb
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SHA512
a691763218b3b385272398e53ef301328ca78ea895840aca1d46fd85273701a00110ebb153c3c99253c5c179c4383053d4d7e5a89ec9d4926aca73d0b96962ff
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SSDEEP
6144:n+65LwOzcNUnWPx0KD5tMIHPmC7AEXQ8/0iPvzpQ6rFiaI:nF7zcNUnWGKDLMIvnnf/xnzpQ6rF
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
Processes:
resource yara_rule behavioral1/memory/3316-143-0x0000000000540000-0x0000000000549000-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 18 1296 rundll32.exe 21 1296 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
397F.exepid process 4392 397F.exe -
Deletes itself 1 IoCs
Processes:
pid process 3024 -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 1296 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 1296 set thread context of 2560 1296 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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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe -
Checks processor information in registry 2 TTPs 21 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information 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\Identifier rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet 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\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString 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 queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status 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\Configuration Data 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\VendorIdentifier 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 Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe -
Processes:
description ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Internet Explorer\Toolbar -
Modifies registry class 36 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e0031000000000093551943100054656d7000003a0009000400efbe2155a884935519432e0000000000000000000000000000000000000000000000000084eebb00540065006d007000000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}" rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Key created \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
pid process 3024 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exepid process 3316 c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe 3316 c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 3024 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 3024 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exepid process 3316 c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
Processes:
description pid process Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 Token: SeShutdownPrivilege 3024 Token: SeCreatePagefilePrivilege 3024 -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
rundll32.exepid process 2560 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
pid process 3024 3024 -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
397F.exerundll32.exedescription pid process target process PID 3024 wrote to memory of 4392 3024 397F.exe PID 3024 wrote to memory of 4392 3024 397F.exe PID 3024 wrote to memory of 4392 3024 397F.exe PID 4392 wrote to memory of 1296 4392 397F.exe rundll32.exe PID 4392 wrote to memory of 1296 4392 397F.exe rundll32.exe PID 4392 wrote to memory of 1296 4392 397F.exe rundll32.exe PID 1296 wrote to memory of 2560 1296 rundll32.exe rundll32.exe PID 1296 wrote to memory of 2560 1296 rundll32.exe rundll32.exe PID 1296 wrote to memory of 2560 1296 rundll32.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe"C:\Users\Admin\AppData\Local\Temp\c31c03e3c2e9ec95d2e80453222278603735971083824ce59ae7e8f2850dc6eb.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3316
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C:\Users\Admin\AppData\Local\Temp\397F.exeC:\Users\Admin\AppData\Local\Temp\397F.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4392 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Ipoetwsuqhd.tmp",Sufeidweoe2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1296 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 239873⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:2560
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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:4672
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.1MB
MD5d4fe627b0bc66a57bfdb76c531c06ce6
SHA11a9ff0a579460a2e90266ebbfbad127514a74e7a
SHA2569292bc6aec169cc1f3f223470669c6307f1d3e61687544c0a228846c1cf0df97
SHA512bea169646b86ca0659efe0989856d58098efcc70d8b8953045635ddd7d4293aed656771d8d0a1e5e4e87a4f272b8e6b69f4eeacd7d7f7220d5b6e50535aa2617
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Filesize
1.1MB
MD5d4fe627b0bc66a57bfdb76c531c06ce6
SHA11a9ff0a579460a2e90266ebbfbad127514a74e7a
SHA2569292bc6aec169cc1f3f223470669c6307f1d3e61687544c0a228846c1cf0df97
SHA512bea169646b86ca0659efe0989856d58098efcc70d8b8953045635ddd7d4293aed656771d8d0a1e5e4e87a4f272b8e6b69f4eeacd7d7f7220d5b6e50535aa2617
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Filesize
726KB
MD56ea8a6cc5fed6c664df1b3ef7c56b55d
SHA16b244d708706441095ae97294928967ddf28432b
SHA2562c7500ac5ebb0116e640747b8a5f0a2648f7d2f5f516ebb398b864cccc626fbe
SHA5124a328a66df407e4c9fa230287104771ea3b5dd8265d60314797426101a8be19d13bc57de2388f0f90b20ada82d950e156ef4267c029080a6254b80eefd8b8741
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Filesize
726KB
MD56ea8a6cc5fed6c664df1b3ef7c56b55d
SHA16b244d708706441095ae97294928967ddf28432b
SHA2562c7500ac5ebb0116e640747b8a5f0a2648f7d2f5f516ebb398b864cccc626fbe
SHA5124a328a66df407e4c9fa230287104771ea3b5dd8265d60314797426101a8be19d13bc57de2388f0f90b20ada82d950e156ef4267c029080a6254b80eefd8b8741