Analysis
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max time kernel
155s -
max time network
133s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
06-12-2022 15:12
Static task
static1
Behavioral task
behavioral1
Sample
1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe
Resource
win10-20220812-en
General
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Target
1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe
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Size
377KB
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MD5
ead788475cddadd1e3ea61b03b88658e
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SHA1
bdc7eb87959adee4c61f4ef1bc7ac2af7c21d6f0
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SHA256
1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3
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SHA512
e66a98a1ca9ace31d123a138ac7a8bbbdb97603e47cca30fdc20e9dc81e70fce829e35b5cf569b59a5582833d7e63049895ea00d534a6f131307e4dafc680e9c
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SSDEEP
6144:u7fA9wLrgh3KuGW5PxYg0pkhPSByiglP0rNPMk:ujAKYpKqFmg0+SyzlP0r
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral1/memory/2500-134-0x0000000000030000-0x0000000000039000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Blocklisted process makes network request 2 IoCs
flow pid Process 25 1132 rundll32.exe 28 1132 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4656 79B4.exe -
Deletes itself 1 IoCs
pid Process 3020 Process not Found -
Loads dropped DLL 1 IoCs
pid Process 1132 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1132 set thread context of 2560 1132 rundll32.exe 68 -
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.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe -
Checks processor information in registry 2 TTPs 25 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\ProcessorNameString 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\1\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier 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\~MHz 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 enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 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\1\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information 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\0\Previous 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\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\1\FeatureSet 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\Component Information 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\Platform Specific Field 1 rundll32.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found -
Modifies registry class 36 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000008655bb81100054656d7000003a0009000400efbe0c55a7898655bb812e00000000000000000000000000000000000000000000000000930e1a01540065006d007000000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3020 Process not Found -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2500 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe 2500 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found 3020 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3020 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2500 1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found Token: SeShutdownPrivilege 3020 Process not Found Token: SeCreatePagefilePrivilege 3020 Process not Found -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2560 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3020 Process not Found 3020 Process not Found -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3020 wrote to memory of 4656 3020 Process not Found 66 PID 3020 wrote to memory of 4656 3020 Process not Found 66 PID 3020 wrote to memory of 4656 3020 Process not Found 66 PID 4656 wrote to memory of 1132 4656 79B4.exe 67 PID 4656 wrote to memory of 1132 4656 79B4.exe 67 PID 4656 wrote to memory of 1132 4656 79B4.exe 67 PID 1132 wrote to memory of 2560 1132 rundll32.exe 68 PID 1132 wrote to memory of 2560 1132 rundll32.exe 68 PID 1132 wrote to memory of 2560 1132 rundll32.exe 68
Processes
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C:\Users\Admin\AppData\Local\Temp\1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe"C:\Users\Admin\AppData\Local\Temp\1785f599349534a2fa4404c78eced25cac3f64f7302a29edfdea1805e3111bd3.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2500
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C:\Users\Admin\AppData\Local\Temp\79B4.exeC:\Users\Admin\AppData\Local\Temp\79B4.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4656 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Eshwsfeuryqqffi.tmp",Qiysidaatietut2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1132 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 172223⤵
- 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:3948
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.2MB
MD52ebd638054fa878e678c1690ef6c03c1
SHA1475445e4f552ad1b0f68eb94c4fe75578d87a54a
SHA25698b60a8b6368eaeb4a0566874b3a9c3ada537dbd9b6971578ba01ef811b40fdd
SHA51297e5ce49c18f88c4068ea4abb13e13cb0b23b95eeaf642b9132005d1bbf9564e4a40461a16588c43c6055c31bb67b5d1e4e8bb8a07ab51dcf4ab8df82377fc16
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Filesize
1.2MB
MD52ebd638054fa878e678c1690ef6c03c1
SHA1475445e4f552ad1b0f68eb94c4fe75578d87a54a
SHA25698b60a8b6368eaeb4a0566874b3a9c3ada537dbd9b6971578ba01ef811b40fdd
SHA51297e5ce49c18f88c4068ea4abb13e13cb0b23b95eeaf642b9132005d1bbf9564e4a40461a16588c43c6055c31bb67b5d1e4e8bb8a07ab51dcf4ab8df82377fc16
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Filesize
768KB
MD596655ec3277ef2e9ea4b5723f60f5b04
SHA1b29e9005cedc5e0d63981e59b05a12f006bd8640
SHA25636cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d
SHA512cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c
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Filesize
768KB
MD596655ec3277ef2e9ea4b5723f60f5b04
SHA1b29e9005cedc5e0d63981e59b05a12f006bd8640
SHA25636cb491e91dc40d4a24f25944c5dca41195e1e7eb9788028f72e38b08789616d
SHA512cb151e071426cba0ec433b4ff8b173a9e07fc922e2b9d9d9359bcd5367a79e5bb996e8afbbfe4dd11bde1a33724b7f70479ac248762f5c9d17f3e0d7d67c151c