Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
06/01/2023, 00:41
Static task
static1
Behavioral task
behavioral1
Sample
c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe
Resource
win10-20220812-en
General
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Target
c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe
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Size
213KB
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MD5
acbd935bcd9c14549499ff705c4d3f53
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SHA1
440a6c2858ed7527e00ad77489316ba94a15945d
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SHA256
c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac
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SHA512
612ea4171a0dbbe08c5905b20f85f54aa8801a043f924eea50f71e717775da5c3a86d13789ec03466f6e508e93a2b64ce28ec8062a5e8a5ad13714df866c1065
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SSDEEP
3072:f9XhQXHOL6efw1zFkK51lSMax1H80kS7bPlKXU+uI:f51L671zFks3aT8b2xK7
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral1/memory/2660-146-0x0000000002D00000-0x0000000002D09000-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 23 4344 rundll32.exe 25 4344 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4408 DA28.exe -
Deletes itself 1 IoCs
pid Process 3052 Process not Found -
Loads dropped DLL 2 IoCs
pid Process 4344 rundll32.exe 4344 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4344 set thread context of 4528 4344 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 opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe -
Checks processor information in registry 2 TTPs 18 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key opened \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 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\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\1\Update Status 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\0\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 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\FeatureSet 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\Configuration Data 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 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Internet Explorer\Toolbar Process not Found Set value (int) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Process not Found -
Modifies registry class 36 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Process not Found Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000002656550d100054656d7000003a0009000400efbe0c5553882656550d2e0000000000000000000000000000000000000000000000000070c06a00540065006d007000000014000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Process not Found Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Process not Found Set value (str) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Process not Found Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}" rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3052 Process not Found -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2660 c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe 2660 c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.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 2660 c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe -
Suspicious use of AdjustPrivilegeToken 16 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 -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4528 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 4408 3052 Process not Found 66 PID 3052 wrote to memory of 4408 3052 Process not Found 66 PID 3052 wrote to memory of 4408 3052 Process not Found 66 PID 4408 wrote to memory of 4344 4408 DA28.exe 67 PID 4408 wrote to memory of 4344 4408 DA28.exe 67 PID 4408 wrote to memory of 4344 4408 DA28.exe 67 PID 4344 wrote to memory of 4528 4344 rundll32.exe 68 PID 4344 wrote to memory of 4528 4344 rundll32.exe 68 PID 4344 wrote to memory of 4528 4344 rundll32.exe 68
Processes
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C:\Users\Admin\AppData\Local\Temp\c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe"C:\Users\Admin\AppData\Local\Temp\c0d782ee403dd8a6a15f90840686e4928ab16e676fc2c9c7c4711996f0f026ac.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2660
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C:\Users\Admin\AppData\Local\Temp\DA28.exeC:\Users\Admin\AppData\Local\Temp\DA28.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4408 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Rewurtuihyfrtty.dll,start2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4344 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 141063⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4528
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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:3240
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.7MB
MD541572c531be01b24497e688b7149f124
SHA104cd03487cb2d0954f17f69149e09559bca2115e
SHA256a7bd2a08efcf8a113cf8a08c6be697a3c83fa234a35af66bd5bab9cfd9b99c19
SHA512211f0c6f501457b29fe7c2e7095a0f99121e9a823cf04acbb8b04f7415d6e1da6e75b7ed971f96ea3e765edf209912a50b4ae948b3b1eeb0c37e4701fd133d4f
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Filesize
3.7MB
MD541572c531be01b24497e688b7149f124
SHA104cd03487cb2d0954f17f69149e09559bca2115e
SHA256a7bd2a08efcf8a113cf8a08c6be697a3c83fa234a35af66bd5bab9cfd9b99c19
SHA512211f0c6f501457b29fe7c2e7095a0f99121e9a823cf04acbb8b04f7415d6e1da6e75b7ed971f96ea3e765edf209912a50b4ae948b3b1eeb0c37e4701fd133d4f
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Filesize
4.3MB
MD58026ab4e1970183f8bd630c845fb8435
SHA1166f0ab8a4ee08a5aa35af82c3cd41a96e7a9d4e
SHA256b57dac1afcf5cd2b7209c029d303db178a3f77660789ed615fb4081fbd9ef867
SHA512b096eee69f9312ed417a7bb33c818f6beecc5be72a5d39fc0f7105575b02d4027ee5c1bf8a3f5eb2e5221b68f67f2a811bb505838af8b83fa20f5e8ecfc5f718
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Filesize
4.3MB
MD58026ab4e1970183f8bd630c845fb8435
SHA1166f0ab8a4ee08a5aa35af82c3cd41a96e7a9d4e
SHA256b57dac1afcf5cd2b7209c029d303db178a3f77660789ed615fb4081fbd9ef867
SHA512b096eee69f9312ed417a7bb33c818f6beecc5be72a5d39fc0f7105575b02d4027ee5c1bf8a3f5eb2e5221b68f67f2a811bb505838af8b83fa20f5e8ecfc5f718
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Filesize
4.3MB
MD58026ab4e1970183f8bd630c845fb8435
SHA1166f0ab8a4ee08a5aa35af82c3cd41a96e7a9d4e
SHA256b57dac1afcf5cd2b7209c029d303db178a3f77660789ed615fb4081fbd9ef867
SHA512b096eee69f9312ed417a7bb33c818f6beecc5be72a5d39fc0f7105575b02d4027ee5c1bf8a3f5eb2e5221b68f67f2a811bb505838af8b83fa20f5e8ecfc5f718