Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
12/01/2023, 15:53
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 268KB
- Sample230112-tbmfsacc61
- SHA256 e30d968d97545bd477dcba4b4ddb5e1f720724a8f744e68a73d3115f25e30f37
- MD5 8a589feb0a2b8e03e39272f963183619
- SHA1 629a3b45d8b922d24e85ed5b1cd221fc0dfb4321
- SHA512 771eaa1f931290766121a8030c570c675cd0d2797fe39b575167144895356795bd7d488c45efccda87436baaf3a784843b58b0cfa1db3131a866db947fb64b7e
- SSDEEP 6144:Br7fILCKf0GxYvNZAzFQRd2FNGpMskFQH2Yp:xLI2KfpxmgCR4FURkFo2Y
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/2504-133-0x00000000048E0000-0x00000000048E9000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 34 3096 rundll32.exe 54 3096 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
pid Process 2760 417.exe - Loads dropped DLL 1 IoCs
pid Process 3096 rundll32.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3096 set thread context of 1928 3096 rundll32.exe 93 - 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 4260 2760 WerFault.exe 89 - 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 21 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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\0\FeatureSet 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\Update Status 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 opened \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\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\1\Previous Update Revision 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\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\0\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet 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\Update Revision 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 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 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 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\CurrentVersion\WorkFolders 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 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 (data) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots 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 Process not Found 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\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ 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 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 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ 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 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 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 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 = 4e003100000000002c56b986100054656d7000003a0009000400efbe6b558a6c2c56bd862e000000000000000000000000000000000000000000000000000173f800540065006d007000000014000000 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\NodeSlots 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\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 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\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\0\0\MRUListEx = ffffffff 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 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 Process not Found - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2480 Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2504 file.exe 2504 file.exe 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found 2480 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2480 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2504 file.exe - Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found Token: SeShutdownPrivilege 2480 Process not Found Token: SeCreatePagefilePrivilege 2480 Process not Found - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1928 rundll32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2480 Process not Found 2480 Process not Found - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2480 wrote to memory of 2760 2480 Process not Found 89 PID 2480 wrote to memory of 2760 2480 Process not Found 89 PID 2480 wrote to memory of 2760 2480 Process not Found 89 PID 2760 wrote to memory of 3096 2760 417.exe 90 PID 2760 wrote to memory of 3096 2760 417.exe 90 PID 2760 wrote to memory of 3096 2760 417.exe 90 PID 3096 wrote to memory of 1928 3096 rundll32.exe 93 PID 3096 wrote to memory of 1928 3096 rundll32.exe 93 PID 3096 wrote to memory of 1928 3096 rundll32.exe 93
Processes
-
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:2504
-
C:\Users\Admin\AppData\Local\Temp\417.exeC:\Users\Admin\AppData\Local\Temp\417.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2760 -
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:3096 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 172033⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1928
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 5322⤵
- Program crash
PID:4260
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2760 -ip 27601⤵PID:3176
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4232
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\417.exe
- Size 1.1MB
- SHA256 6b9418a44afb45570b9a14440155154b017edd3095084a50ebaff5a3e56b0229
- MD5 bdb3f308999b3d93186bf4243ab2086c
- SHA1 875a59823daa39d1d9cb8bca897ac75846422951
- SHA512 68b050c71259c2c0e375a1ed46433e26470a597e2e5cbe6825c6a317f41675eff56a7d4d1f3702eb5705cc1b1464452504700122196b0e9607a18aee985330f6
- SSDEEP 24576:E7+7Lxn+hWZY5RXerIl3N3ziVZ8RCMx29fX1b9IOU1Ez02:E7SchMYu8SiEX1SjE42
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\417.exe
- Size 1.1MB
- SHA256 6b9418a44afb45570b9a14440155154b017edd3095084a50ebaff5a3e56b0229
- MD5 bdb3f308999b3d93186bf4243ab2086c
- SHA1 875a59823daa39d1d9cb8bca897ac75846422951
- SHA512 68b050c71259c2c0e375a1ed46433e26470a597e2e5cbe6825c6a317f41675eff56a7d4d1f3702eb5705cc1b1464452504700122196b0e9607a18aee985330f6
- SSDEEP 24576:E7+7Lxn+hWZY5RXerIl3N3ziVZ8RCMx29fX1b9IOU1Ez02:E7SchMYu8SiEX1SjE42
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Rruwtqrefy.tmp
- Size 805KB
- SHA256 c5cd7d52ba95127c18556a2ddca64e4ef80a2945e6579545c0067abdab3a0ad0
- MD5 44d724c9ad9ae3149d4997852eea3e96
- SHA1 dcd92e1b704b3f25ba455e079004c5a5aaf903f9
- SHA512 791c3b62685a475799a991b2f0f9535781c888d48d1dd47b5b2cd407ff46e15231247f07ceb63c012bd923bf88fffaecf29030186e3d569b9886048881012e44
- SSDEEP 12288:z+e7xdjlJTEabNIY4nU2BWHGugNQDljcsKBDzd+9EmF78+kGjdd:imxdjRqlUeWGuJc/BD5yJ78+BJd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Rruwtqrefy.tmp
- Size 805KB
- SHA256 c5cd7d52ba95127c18556a2ddca64e4ef80a2945e6579545c0067abdab3a0ad0
- MD5 44d724c9ad9ae3149d4997852eea3e96
- SHA1 dcd92e1b704b3f25ba455e079004c5a5aaf903f9
- SHA512 791c3b62685a475799a991b2f0f9535781c888d48d1dd47b5b2cd407ff46e15231247f07ceb63c012bd923bf88fffaecf29030186e3d569b9886048881012e44
- SSDEEP 12288:z+e7xdjlJTEabNIY4nU2BWHGugNQDljcsKBDzd+9EmF78+kGjdd:imxdjRqlUeWGuJc/BD5yJ78+BJd
- MD5 SHA1 SHA512 SSDEEP