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Analysis
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max time kernel
150s -
max time network
111s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
13/01/2023, 11:49
Static task
static1
Behavioral task
behavioral1
Sample
c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe
Resource
win10-20220812-en
General
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Target
c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe
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Size
285KB
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MD5
0a713b9646c73a9e82d26b0a4638ff4a
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SHA1
557746482cad4605d6a36ef9e0838a1351f1870b
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SHA256
c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603
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SHA512
930dcd4f3349767f87b5b9b8c82ca71afd04a1bd85058129ee3442f80c92d9e7b5949c1c72ac91903184fb32b800ab4b775177a2a75f93bfc97c17036e5f2894
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SSDEEP
6144:Bdtj9HlyLmGBlJyWwyuxMi2gHH+8SlJZ9tzrSA3Hq+v:/tj9U6GBqWNxuehZ9P3H
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral1/memory/2752-146-0x00000000005B0000-0x00000000005B9000-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 21 4672 rundll32.exe 24 4672 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4008 3B05.exe -
Deletes itself 1 IoCs
pid Process 2900 Process not Found -
Loads dropped DLL 1 IoCs
pid Process 4672 rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4672 set thread context of 4212 4672 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 c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe -
Checks processor information in registry 2 TTPs 23 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\~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\Platform Specific Field 1 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\Identifier 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\~MHz rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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\ProcessorNameString 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\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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 Status 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\FeatureSet 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\Update Status rundll32.exe -
description ioc Process 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 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 -
Modifies registry class 36 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 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 (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\Shell\Bags\1 rundll32.exe 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 (data) \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff 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 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 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 = 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\0 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 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\0\0 = 4e003100000000002d565a66100054656d7000003a0009000400efbe0c55a7892d565a662e000000000000000000000000000000000000000000000000008bd44f00540065006d007000000014000000 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\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance 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\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\0\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-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings rundll32.exe 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 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 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\NodeSlots = 02 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 = 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 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\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 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 Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe 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\BagMRU 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 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 Key created \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell 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\SniffedFolderType = "Generic" Process not Found -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2900 Process not Found -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2752 c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe 2752 c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found 2900 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2900 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2752 c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe -
Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found Token: SeShutdownPrivilege 2900 Process not Found Token: SeCreatePagefilePrivilege 2900 Process not Found -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4212 rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2900 Process not Found 2900 Process not Found -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2900 wrote to memory of 4008 2900 Process not Found 66 PID 2900 wrote to memory of 4008 2900 Process not Found 66 PID 2900 wrote to memory of 4008 2900 Process not Found 66 PID 4008 wrote to memory of 4672 4008 3B05.exe 67 PID 4008 wrote to memory of 4672 4008 3B05.exe 67 PID 4008 wrote to memory of 4672 4008 3B05.exe 67 PID 4672 wrote to memory of 4212 4672 rundll32.exe 68 PID 4672 wrote to memory of 4212 4672 rundll32.exe 68 PID 4672 wrote to memory of 4212 4672 rundll32.exe 68
Processes
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C:\Users\Admin\AppData\Local\Temp\c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe"C:\Users\Admin\AppData\Local\Temp\c242969d68b39199fa21ec075493f62f0cc69384f4847759f904031cf217a603.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2752
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C:\Users\Admin\AppData\Local\Temp\3B05.exeC:\Users\Admin\AppData\Local\Temp\3B05.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4008 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Rruwtqrefy.tmp",Uuhpdwiyer2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4672 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 172323⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4212
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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:4220
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.1MB
MD55b828b1cccb4f07c6f01e21ce6883ea7
SHA181aa640a004098929a3d5943f96a055ad72088da
SHA256942dab456e87812b72af98bb1d85b2b06cde2b97b0edab91761e02e5a8dc1b59
SHA512e4a27f62ac7e34e11b012b65d6b608604ffd908c0fcabb268945d45e7eb335a306dc7f02b801159943ca0c17669bde5ab3297f307f04bcf334493ba09a0f5721
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Filesize
1.1MB
MD55b828b1cccb4f07c6f01e21ce6883ea7
SHA181aa640a004098929a3d5943f96a055ad72088da
SHA256942dab456e87812b72af98bb1d85b2b06cde2b97b0edab91761e02e5a8dc1b59
SHA512e4a27f62ac7e34e11b012b65d6b608604ffd908c0fcabb268945d45e7eb335a306dc7f02b801159943ca0c17669bde5ab3297f307f04bcf334493ba09a0f5721
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Filesize
805KB
MD544d724c9ad9ae3149d4997852eea3e96
SHA1dcd92e1b704b3f25ba455e079004c5a5aaf903f9
SHA256c5cd7d52ba95127c18556a2ddca64e4ef80a2945e6579545c0067abdab3a0ad0
SHA512791c3b62685a475799a991b2f0f9535781c888d48d1dd47b5b2cd407ff46e15231247f07ceb63c012bd923bf88fffaecf29030186e3d569b9886048881012e44
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Filesize
805KB
MD544d724c9ad9ae3149d4997852eea3e96
SHA1dcd92e1b704b3f25ba455e079004c5a5aaf903f9
SHA256c5cd7d52ba95127c18556a2ddca64e4ef80a2945e6579545c0067abdab3a0ad0
SHA512791c3b62685a475799a991b2f0f9535781c888d48d1dd47b5b2cd407ff46e15231247f07ceb63c012bd923bf88fffaecf29030186e3d569b9886048881012e44