Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
13/12/2022, 07:37
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
5 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 316KB
- Sample221213-jftesaec39
- SHA256 2308fb2fbbe883fe5d66e90ae3d3be46ebfa55a9d3977bb3e490a92080dab4a0
- MD5 86a6fbe5e2bf447a61cc17369815403f
- SHA1 fe9705eb26971ed34d70d5d6179f7c02e37baf78
- SHA512 67279cb2edc5f1c381f35c2ff5e9b6b6237211a8fe4014e484683f200e3b1ef1940ede0ade23de5041ae07a55992690761af9530824fc85c467ad9e8881d25f9
- SSDEEP 6144:VajtyjbaxLyNk9fERAEczms+8rpBiUrW8BYQbFfNXS:wTeNkBERAES6WTrXBYeF1X
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/2172-133-0x00000000007C0000-0x00000000007C9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 45 4112 rundll32.exe 59 4112 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 4616 1443.exe - Loads dropped DLL 1 IoCs
pid Process 4112 rundll32.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4112 set thread context of 1432 4112 rundll32.exe 97 - 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 2000 4616 WerFault.exe 92 - 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 19 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 Status 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\VendorIdentifier 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\Previous Update Revision 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 opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\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\0\Update Revision rundll32.exe Key opened \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\1\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\Platform Specific Field 1 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\1\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found - Modifies registry class 30 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000008d55c944100054656d7000003a0009000400efbe6b558a6c8d55cf442e0000000000000000000000000000000000000000000000000071945e00540065006d007000000014000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Process not Found Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3052 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2172 file.exe 2172 file.exe 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found 3052 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3052 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2172 file.exe - Suspicious use of AdjustPrivilegeToken 26 IoCs
description pid Process Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found Token: SeShutdownPrivilege 3052 Process not Found Token: SeCreatePagefilePrivilege 3052 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1432 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3052 Process not Found 3052 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3052 wrote to memory of 4616 3052 Process not Found 92 PID 3052 wrote to memory of 4616 3052 Process not Found 92 PID 3052 wrote to memory of 4616 3052 Process not Found 92 PID 4616 wrote to memory of 4112 4616 1443.exe 93 PID 4616 wrote to memory of 4112 4616 1443.exe 93 PID 4616 wrote to memory of 4112 4616 1443.exe 93 PID 4112 wrote to memory of 1432 4112 rundll32.exe 97 PID 4112 wrote to memory of 1432 4112 rundll32.exe 97 PID 4112 wrote to memory of 1432 4112 rundll32.exe 97
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:2172
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C:\Users\Admin\AppData\Local\Temp\1443.exeC:\Users\Admin\AppData\Local\Temp\1443.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4616 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Uyieweaiht.tmp",Hfesyte2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4112 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 142163⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1432
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 5322⤵
- Program crash
PID:2000
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4616 -ip 46161⤵PID:1720
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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:1316
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\1443.exe
- Size 1.1MB
- SHA256 6a9c462b5bc1bdd7886e46aba75ae45d17cf4a8860292963df73124b0f9cad32
- MD5 34db32a6adc7abc25cdf26df6c69e259
- SHA1 68fb1af431c39d30e099a554b51c72c4c0f6e034
- SHA512 be01c0dc14b2eb223826795191ff464f31403e7bfa1fdcdb49b6eb34a70e0d51ca1e4698ee1c73454479cea7c25777732c8dd0366bdae35279e38283b83b2a9b
- SSDEEP 24576:xJ7pi4UgdYe1n6r25DG4L/wfXFSoF2ujssPvwaW2czBV1:nl7bdYKn6rEDGSmX3F2rsAb2ctV
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\1443.exe
- Size 1.1MB
- SHA256 6a9c462b5bc1bdd7886e46aba75ae45d17cf4a8860292963df73124b0f9cad32
- MD5 34db32a6adc7abc25cdf26df6c69e259
- SHA1 68fb1af431c39d30e099a554b51c72c4c0f6e034
- SHA512 be01c0dc14b2eb223826795191ff464f31403e7bfa1fdcdb49b6eb34a70e0d51ca1e4698ee1c73454479cea7c25777732c8dd0366bdae35279e38283b83b2a9b
- SSDEEP 24576:xJ7pi4UgdYe1n6r25DG4L/wfXFSoF2ujssPvwaW2czBV1:nl7bdYKn6rEDGSmX3F2rsAb2ctV
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Uyieweaiht.tmp
- Size 788KB
- SHA256 f61cae9301f5336f9048c1b7e68eab13bb839f63925bc6625f8e7e20f32f00c6
- MD5 8e37ae196e2cdea4dbc44dc99a84a80f
- SHA1 b81e6a81a6efe6f44a0edd73ef3b8635b8ae3a0e
- SHA512 fbb1418cab570e6e4e375da3dd99616add73576da1ace88a44adc57a39a6911dab2e3e150366cc7b662604859e6ede53b2a9f2876afe14a0b5e0ea7b7db75e41
- SSDEEP 24576:ac1q9q5Jq09sNt1/EGZd/I3rcMcbFhkCobWxIB7N:loqTq0uOGw3kLbI
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Uyieweaiht.tmp
- Size 788KB
- SHA256 f61cae9301f5336f9048c1b7e68eab13bb839f63925bc6625f8e7e20f32f00c6
- MD5 8e37ae196e2cdea4dbc44dc99a84a80f
- SHA1 b81e6a81a6efe6f44a0edd73ef3b8635b8ae3a0e
- SHA512 fbb1418cab570e6e4e375da3dd99616add73576da1ace88a44adc57a39a6911dab2e3e150366cc7b662604859e6ede53b2a9f2876afe14a0b5e0ea7b7db75e41
- SSDEEP 24576:ac1q9q5Jq09sNt1/EGZd/I3rcMcbFhkCobWxIB7N:loqTq0uOGw3kLbI
- MD5 SHA1 SHA512 SSDEEP