Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
23/12/2022, 22:26
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
21 signatures
150 seconds
General
- Target file.exe
- Size 225KB
- Sample221223-2chg8ace2t
- SHA256 e14a50b706f300595ed963827bdff00344ccd5a5a5f35cd1adb7eae5ca12c398
- MD5 4fb71fea3c7e81451d8be33c65f9062b
- SHA1 be2c922e707e8c703a3eb83d2d999d1c1210d105
- SHA512 98cd4919e1f256653ee92bf3f8f6e761fb331d074bb4e27d5818556977ac8477687f32edba0cd4435fc22c153a2f5469680ddbf1aaf7772e7e0541d7b3eb9955
- SSDEEP 3072:k1SOArjLhGJ45EUdsb3tgsgVb8hChZMjDMzE/GPghDVX5SKXPH8oSsknY3Ox6qQQ:USOaLh0zj9KVxOMzE/hpVJZ8o9UHk5o
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/4816-133-0x00000000004D0000-0x00000000004D9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 39 1576 rundll32.exe 66 1576 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 4316 DFB6.exe - Loads dropped DLL 1 IoCs
pid Process 1576 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1576 set thread context of 3176 1576 rundll32.exe 92 - 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 3608 4316 WerFault.exe 88 - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Checks processor information in registry 2 TTPs 24 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier 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\Configuration Data 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\Identifier 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\Platform Specific Field 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\~MHz rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\Configuration Data 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\ProcessorNameString 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\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier 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 queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision 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 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 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 Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 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 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 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\0\0\0\0\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\NodeSlots 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\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\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\NodeSlots = 02 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\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\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\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\0\0\0\0 = 4e00310000000000975557bb100054656d7000003a0009000400efbe6b557d6c97555cbb2e00000000000000000000000000000000000000000000000000978e6500540065006d007000000014000000 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 (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 (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\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 = 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\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 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 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 Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 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 - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2700 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4816 file.exe 4816 file.exe 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found 2700 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2700 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4816 file.exe - Suspicious use of AdjustPrivilegeToken 22 IoCs
description pid Process Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found Token: SeShutdownPrivilege 2700 Process not Found Token: SeCreatePagefilePrivilege 2700 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3176 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2700 Process not Found 2700 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2700 wrote to memory of 4316 2700 Process not Found 88 PID 2700 wrote to memory of 4316 2700 Process not Found 88 PID 2700 wrote to memory of 4316 2700 Process not Found 88 PID 4316 wrote to memory of 1576 4316 DFB6.exe 89 PID 4316 wrote to memory of 1576 4316 DFB6.exe 89 PID 4316 wrote to memory of 1576 4316 DFB6.exe 89 PID 1576 wrote to memory of 3176 1576 rundll32.exe 92 PID 1576 wrote to memory of 3176 1576 rundll32.exe 92 PID 1576 wrote to memory of 3176 1576 rundll32.exe 92
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:4816
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C:\Users\Admin\AppData\Local\Temp\DFB6.exeC:\Users\Admin\AppData\Local\Temp\DFB6.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4316 -
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:1576 -
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:3176
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4316 -s 5362⤵
- Program crash
PID:3608
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4316 -ip 43161⤵PID:4520
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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:1936
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\DFB6.exe
- Size 1.0MB
- SHA256 4c1610e7dc16020debe9654d1e580801cc78c65bda0b64d130d7f922cbe61c38
- MD5 c38465b95537651a663016606115fd07
- SHA1 942cab63df3de5c49da8d431b0d8b20ff09c0417
- SHA512 89f0e05bb5c5373d23fed373a36213d69f94034f27bcdcf435474925fac1a48bfde19c1f1ab01294c5fc04b9341f0d0fdefcd5b03fd91dd831daa31c0d926a80
- SSDEEP 24576:PKq5gZBHRdYjUdjt99gpfnt+BqgmyZEM5saDZRFsxnto:P12dYkx99ghxhyZZuadint
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\DFB6.exe
- Size 1.0MB
- SHA256 4c1610e7dc16020debe9654d1e580801cc78c65bda0b64d130d7f922cbe61c38
- MD5 c38465b95537651a663016606115fd07
- SHA1 942cab63df3de5c49da8d431b0d8b20ff09c0417
- SHA512 89f0e05bb5c5373d23fed373a36213d69f94034f27bcdcf435474925fac1a48bfde19c1f1ab01294c5fc04b9341f0d0fdefcd5b03fd91dd831daa31c0d926a80
- SSDEEP 24576:PKq5gZBHRdYjUdjt99gpfnt+BqgmyZEM5saDZRFsxnto:P12dYkx99ghxhyZZuadint
- 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