Analysis
- max time kernel
150s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
21/11/2022, 18:56
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
21 signatures
150 seconds
General
- Target file.exe
- Size 189KB
- Sample221121-xlcacagd21
- SHA256 e4a3d5c424ff9572df88d66961157b285196df4a2bc12a1a091d93d4f5d1bf48
- MD5 bdd76137cbdcc21c6637f007344dc50b
- SHA1 2959a4ab3450efff4ecd44bbdfd980839a0da3f8
- SHA512 95946701c2535c999baa51a7b6dda8a903c56fafdcb686449dcbfcbc40324bb074d8f7718050870e86e761c530a59382968caeb788279dcea4ef26423b42f1f0
- SSDEEP 3072:KQ5yPeB1qUWheah5PB29jQKcSFl1jVhm40A9xUpHAcAB:KQsC+eWB2lQg1eCPU
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/2232-133-0x00000000006E0000-0x00000000006E9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 1 IoCs
flow pid Process 44 1944 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 4116 2839.exe - Loads dropped DLL 1 IoCs
pid Process 1944 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1944 set thread context of 4128 1944 rundll32.exe 95 - 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 2440 4116 WerFault.exe 91 - 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 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\0\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\1\Configuration Data 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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\Update Status 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 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\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information 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\Previous 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\Platform Specific Field 1 rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor 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\FeatureSet rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e0031000000000075552097100054656d7000003a0009000400efbe21550a58755524972e00000000000000000000000000000000000000000000000000f8ede900540065006d007000000014000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2940 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2232 file.exe 2232 file.exe 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found 2940 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2940 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2232 file.exe - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found Token: SeShutdownPrivilege 2940 Process not Found Token: SeCreatePagefilePrivilege 2940 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4128 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2940 Process not Found 2940 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2940 wrote to memory of 4116 2940 Process not Found 91 PID 2940 wrote to memory of 4116 2940 Process not Found 91 PID 2940 wrote to memory of 4116 2940 Process not Found 91 PID 4116 wrote to memory of 1944 4116 2839.exe 92 PID 4116 wrote to memory of 1944 4116 2839.exe 92 PID 4116 wrote to memory of 1944 4116 2839.exe 92 PID 1944 wrote to memory of 4128 1944 rundll32.exe 95 PID 1944 wrote to memory of 4128 1944 rundll32.exe 95 PID 1944 wrote to memory of 4128 1944 rundll32.exe 95
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:2232
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C:\Users\Admin\AppData\Local\Temp\2839.exeC:\Users\Admin\AppData\Local\Temp\2839.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4116 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp",Tiuqiiueaur2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 225353⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4128
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 5562⤵
- Program crash
PID:2440
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4116 -ip 41161⤵PID:4628
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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:4868
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\2839.exe
- Size 1010KB
- SHA256 83ec0913e21e0f02b20deb87ee1ff7a800539ee3bbfb42f7996048d6c14e260b
- MD5 5134e0f943966bc8fbb5c728da2b6625
- SHA1 b72d69f06054a20df3954fd755fd1a52eb2e76d7
- SHA512 7b0c13c72ef688ee80d8015cd0b9df77ce81327ac8825abee978e6ca048c73d4ca0856f12c7290d644724f70ed3da7d4d489f95fb346a4336e92d421371f3c5d
- SSDEEP 24576:tkIelYJcQ+izaT9BWhcmL5e/ay/dvlFs4:t0lJizaTKcmNe/aEF
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\2839.exe
- Size 1010KB
- SHA256 83ec0913e21e0f02b20deb87ee1ff7a800539ee3bbfb42f7996048d6c14e260b
- MD5 5134e0f943966bc8fbb5c728da2b6625
- SHA1 b72d69f06054a20df3954fd755fd1a52eb2e76d7
- SHA512 7b0c13c72ef688ee80d8015cd0b9df77ce81327ac8825abee978e6ca048c73d4ca0856f12c7290d644724f70ed3da7d4d489f95fb346a4336e92d421371f3c5d
- SSDEEP 24576:tkIelYJcQ+izaT9BWhcmL5e/ay/dvlFs4:t0lJizaTKcmNe/aEF
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp
- Size 752KB
- SHA256 6ecc725eab418e27d8fa2f1031fce6bc119d677b8d72e0447050a87489e8e0ca
- MD5 ad4fe6dd11eca5f7254e0e00ed47d984
- SHA1 e809de0322d74dd4642f215f46f22b3a9b7caa21
- SHA512 d09f4f9a94f34fe1a6f5fe78ec32e91026fe07263183d4d41c4a51cfa7ee5fbc1b38d2ebeda20a717a2a730af011d73d113decb3ae2fe9db50530c095cf33ea3
- SSDEEP 12288:zfSxtWGq0esNiHPcc92qLSl6Tw3he78O48BG7QvUaDkndA+OmV8YqOgFkVd4FGJC:z6x4ff3Sxg5/R5ou7/P795pJc
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Wuwedteata.tmp
- Size 752KB
- SHA256 6ecc725eab418e27d8fa2f1031fce6bc119d677b8d72e0447050a87489e8e0ca
- MD5 ad4fe6dd11eca5f7254e0e00ed47d984
- SHA1 e809de0322d74dd4642f215f46f22b3a9b7caa21
- SHA512 d09f4f9a94f34fe1a6f5fe78ec32e91026fe07263183d4d41c4a51cfa7ee5fbc1b38d2ebeda20a717a2a730af011d73d113decb3ae2fe9db50530c095cf33ea3
- SSDEEP 12288:zfSxtWGq0esNiHPcc92qLSl6Tw3he78O48BG7QvUaDkndA+OmV8YqOgFkVd4FGJC:z6x4ff3Sxg5/R5ou7/P795pJc
- MD5 SHA1 SHA512 SSDEEP