Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
24/12/2022, 11:43
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
22 signatures
150 seconds
General
- Target file.exe
- Size 225KB
- Sample221224-nvkhmshh95
- SHA256 9b1d70812de43160f0d6c97e42d5978ef9bbb75ac6ab88e73a26efbce3bb1472
- MD5 7e42c8111c691f23490ebd089e2b2cff
- SHA1 db340c3af9a999f2fdd342d26956ba9a9f5b9612
- SHA512 9dc32a78e010f7f3ecadaac82a18c836ad1e100f91ce7ec57660b0b14e9689816b43aedd2b84ba64426e5be21bf4b87e96698e6dfa27963b57dd7a434a5f0987
- SSDEEP 3072:lDqJLvMTC54NZH2ClKV8BQUVJ8vGRqYDcauDRTzIzbGWf/ln:4Lvwl92LSJ8v6qNaMR/IzbGI
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/1784-133-0x00000000004A0000-0x00000000004A9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 37 524 rundll32.exe 64 524 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 2940 F7F1.exe - Loads dropped DLL 1 IoCs
pid Process 524 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 524 set thread context of 1328 524 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 4924 2940 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 23 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key opened \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\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\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz 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\1\Update Revision 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\Previous Update Revision 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\Platform Specific Field 1 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\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status 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 enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\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\1\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Platform Specific Field 1 rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e0031000000000098557865100054656d7000003a0009000400efbe6b557d6c98557c652e000000000000000000000000000000000000000000000000000acb2401540065006d007000000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2508 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1784 file.exe 1784 file.exe 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found 2508 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2508 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1784 file.exe - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found Token: SeShutdownPrivilege 2508 Process not Found Token: SeCreatePagefilePrivilege 2508 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1328 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2508 Process not Found 2508 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 2508 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2508 wrote to memory of 2940 2508 Process not Found 89 PID 2508 wrote to memory of 2940 2508 Process not Found 89 PID 2508 wrote to memory of 2940 2508 Process not Found 89 PID 2940 wrote to memory of 524 2940 F7F1.exe 90 PID 2940 wrote to memory of 524 2940 F7F1.exe 90 PID 2940 wrote to memory of 524 2940 F7F1.exe 90 PID 524 wrote to memory of 1328 524 rundll32.exe 93 PID 524 wrote to memory of 1328 524 rundll32.exe 93 PID 524 wrote to memory of 1328 524 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:1784
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C:\Users\Admin\AppData\Local\Temp\F7F1.exeC:\Users\Admin\AppData\Local\Temp\F7F1.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Oyiesauffusw.tmp",Wuuitfqhpt2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:524 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 171033⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1328
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2940 -s 2922⤵
- Program crash
PID:4924
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2940 -ip 29401⤵PID:3784
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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:2516
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\F7F1.exe
- Size 1.0MB
- SHA256 6827049f2f1b5063ff51fda2d49ce7dd9c6def7e8027f4c7401a32ecba82d078
- MD5 26c75115eea76cb487d509aa1f234d4a
- SHA1 e8013a9b0f044a64b854be0262f63985cf0097c7
- SHA512 6d8c1c332a3e0f406acf1f10229f91d346de003f53542c021ff435952ad0340437efa595b7c099e56153f864d4d8b48b0d0ffd48098d380a1dfa9b50650303c4
- SSDEEP 24576:KbYvHZ0tS/TEBTIUBvM5jskp1K0Gl8b6OUdFB:K6x/TEBpM5jskvKfvOU7B
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\F7F1.exe
- Size 1.0MB
- SHA256 6827049f2f1b5063ff51fda2d49ce7dd9c6def7e8027f4c7401a32ecba82d078
- MD5 26c75115eea76cb487d509aa1f234d4a
- SHA1 e8013a9b0f044a64b854be0262f63985cf0097c7
- SHA512 6d8c1c332a3e0f406acf1f10229f91d346de003f53542c021ff435952ad0340437efa595b7c099e56153f864d4d8b48b0d0ffd48098d380a1dfa9b50650303c4
- SSDEEP 24576:KbYvHZ0tS/TEBTIUBvM5jskp1K0Gl8b6OUdFB:K6x/TEBpM5jskvKfvOU7B
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Oyiesauffusw.tmp
- Size 730KB
- SHA256 5cb8e52b000f84494627db8e8e700e7731c9bfa2eb9e6a8a8280d2311327e81a
- MD5 8d039a703875733043526555982e4e60
- SHA1 f583795e790e682db2feaa5f5b8d282216f581e2
- SHA512 3e89ec3eb7e90aa93c0a3cc2d120521b1c2236a8a2169b2654fcc153f926b97e85267a177ef92f3ac3a7aa493a81a3a55c1b6b56ef8f8beb93b78bf3eb10373e
- SSDEEP 12288:qs57PqFDlWFgP1t2m8eEAI20/nt/AwIV0IuvYBF7:d57yMsn2m84I2Guw9+B
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Oyiesauffusw.tmp
- Size 730KB
- SHA256 5cb8e52b000f84494627db8e8e700e7731c9bfa2eb9e6a8a8280d2311327e81a
- MD5 8d039a703875733043526555982e4e60
- SHA1 f583795e790e682db2feaa5f5b8d282216f581e2
- SHA512 3e89ec3eb7e90aa93c0a3cc2d120521b1c2236a8a2169b2654fcc153f926b97e85267a177ef92f3ac3a7aa493a81a3a55c1b6b56ef8f8beb93b78bf3eb10373e
- SSDEEP 12288:qs57PqFDlWFgP1t2m8eEAI20/nt/AwIV0IuvYBF7:d57yMsn2m84I2Guw9+B
- MD5 SHA1 SHA512 SSDEEP