Analysis
- max time kernel
150s - max time network
135s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
05/01/2023, 13:49
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
23 signatures
150 seconds
General
- Target file.exe
- Size 214KB
- Sample230105-q4nyjacb74
- SHA256 627304aa7e9cf1d57572fcf2a8a93a026a5c4b507c6e57f7ee2f3d3d27fabcd4
- MD5 676f2492b7735db1d47443c43701c14a
- SHA1 0507cf23a5ce0515315e0af4dbdf380449041c96
- SHA512 f57994d532e8fad3f08a014bda4bb922844f815951f14c1668344de1917d00e476df9a28f26ec341f2284ee4ac3b594f00c13e1677b4e22152a5cefe90083b43
- SSDEEP 3072:PXK327xwLECt1Qf+l5dKJjoE1OCkQDA797K56qmcTdLFl:/sLEEQf+MjfOCklB256G
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral2/memory/1128-133-0x0000000002D30000-0x0000000002D39000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 2 IoCs
flow pid Process 66 2040 rundll32.exe 68 2040 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 1756 DDB3.exe 3716 bevsfbt - Loads dropped DLL 1 IoCs
pid Process 2040 rundll32.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts rundll32.exe - Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 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 2040 set thread context of 4560 2040 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 884 1756 WerFault.exe 81 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bevsfbt Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bevsfbt Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bevsfbt Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Checks processor information in registry 2 TTPs 24 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\Previous Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\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\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet 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 Revision 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\Component Information 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\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 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\VendorIdentifier 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\~MHz rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key enumerated \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\Component Information 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\Update Status rundll32.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1128 file.exe 1128 file.exe 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1040 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1128 file.exe 3716 bevsfbt - Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeShutdownPrivilege 1040 Process not Found Token: SeCreatePagefilePrivilege 1040 Process not Found Token: SeDebugPrivilege 2040 rundll32.exe Token: SeShutdownPrivilege 1040 Process not Found Token: SeCreatePagefilePrivilege 1040 Process not Found Token: SeShutdownPrivilege 1040 Process not Found Token: SeCreatePagefilePrivilege 1040 Process not Found - Suspicious use of FindShellTrayWindow 10 IoCs
pid Process 4560 rundll32.exe 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found 2040 rundll32.exe 1040 Process not Found 1040 Process not Found 1040 Process not Found 1040 Process not Found - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1040 wrote to memory of 1756 1040 Process not Found 81 PID 1040 wrote to memory of 1756 1040 Process not Found 81 PID 1040 wrote to memory of 1756 1040 Process not Found 81 PID 1756 wrote to memory of 2040 1756 DDB3.exe 82 PID 1756 wrote to memory of 2040 1756 DDB3.exe 82 PID 1756 wrote to memory of 2040 1756 DDB3.exe 82 PID 2040 wrote to memory of 4560 2040 rundll32.exe 93 PID 2040 wrote to memory of 4560 2040 rundll32.exe 93 PID 2040 wrote to memory of 4560 2040 rundll32.exe 93 PID 2040 wrote to memory of 4068 2040 rundll32.exe 94 PID 2040 wrote to memory of 4068 2040 rundll32.exe 94 PID 2040 wrote to memory of 4068 2040 rundll32.exe 94 PID 2040 wrote to memory of 4388 2040 rundll32.exe 96 PID 2040 wrote to memory of 4388 2040 rundll32.exe 96 PID 2040 wrote to memory of 4388 2040 rundll32.exe 96 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe
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:1128
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C:\Users\Admin\AppData\Local\Temp\DDB3.exeC:\Users\Admin\AppData\Local\Temp\DDB3.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp",Uprsprhaot2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2040 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 239893⤵
- Suspicious use of FindShellTrayWindow
PID:4560
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C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:4068
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:4388
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1756 -s 5202⤵
- Program crash
PID:884
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1756 -ip 17561⤵PID:3672
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C:\Users\Admin\AppData\Roaming\bevsfbtC:\Users\Admin\AppData\Roaming\bevsfbt1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3716
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\DDB3.exe
- Size 1014KB
- SHA256 5d05ccbac7175fe2b86e08f321cf828b0558c9e2e8a9329dcb5a6dbe459b4997
- MD5 9990e840e4b6e75066b99d6f2697daac
- SHA1 5aac967c0e742c1d48edbd96cf352b29bdbb69da
- SHA512 ca2aa7d2188eb6e023f709184770f67a16ffa3c0f3ac61ce43cb33564fe1384d2798bd910bb25df9c5feb2db7524eba2ec6db6feef472066812028849f1b7455
- SSDEEP 24576:Q8UyoQogy1lL46gbTVief2/MqE0JKYp7j:QlFFFK6gPVieO/M0JKYR
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\DDB3.exe
- Size 1014KB
- SHA256 5d05ccbac7175fe2b86e08f321cf828b0558c9e2e8a9329dcb5a6dbe459b4997
- MD5 9990e840e4b6e75066b99d6f2697daac
- SHA1 5aac967c0e742c1d48edbd96cf352b29bdbb69da
- SHA512 ca2aa7d2188eb6e023f709184770f67a16ffa3c0f3ac61ce43cb33564fe1384d2798bd910bb25df9c5feb2db7524eba2ec6db6feef472066812028849f1b7455
- SSDEEP 24576:Q8UyoQogy1lL46gbTVief2/MqE0JKYp7j:QlFFFK6gPVieO/M0JKYR
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp
- Size 784KB
- SHA256 20dc61c5456ea5756f432aebecf74660acebf5ace0f7c8d1b360757ed79075d8
- MD5 c50c2f17112b6c6b0892cb2c1f502108
- SHA1 3dd1444384bf790f5aa90ae95ef7745fa4cfaf72
- SHA512 bfbfc3a13816a12e25c373f6739215b9dff559fecfdf26c3358a452bdc833b6eaa64bbae316f4b29b9e9ce802e9f50c66b533c8c3c1b372025a7f0b7d8b452f1
- SSDEEP 24576:l8Jr+SgWH5UB/VdYQ/N7WqpWaQxYZYBsFn:OJrSBYqLY
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp
- Size 784KB
- SHA256 20dc61c5456ea5756f432aebecf74660acebf5ace0f7c8d1b360757ed79075d8
- MD5 c50c2f17112b6c6b0892cb2c1f502108
- SHA1 3dd1444384bf790f5aa90ae95ef7745fa4cfaf72
- SHA512 bfbfc3a13816a12e25c373f6739215b9dff559fecfdf26c3358a452bdc833b6eaa64bbae316f4b29b9e9ce802e9f50c66b533c8c3c1b372025a7f0b7d8b452f1
- SSDEEP 24576:l8Jr+SgWH5UB/VdYQ/N7WqpWaQxYZYBsFn:OJrSBYqLY
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bevsfbt
- Size 214KB
- SHA256 627304aa7e9cf1d57572fcf2a8a93a026a5c4b507c6e57f7ee2f3d3d27fabcd4
- MD5 676f2492b7735db1d47443c43701c14a
- SHA1 0507cf23a5ce0515315e0af4dbdf380449041c96
- SHA512 f57994d532e8fad3f08a014bda4bb922844f815951f14c1668344de1917d00e476df9a28f26ec341f2284ee4ac3b594f00c13e1677b4e22152a5cefe90083b43
- SSDEEP 3072:PXK327xwLECt1Qf+l5dKJjoE1OCkQDA797K56qmcTdLFl:/sLEEQf+MjfOCklB256G
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bevsfbt
- Size 214KB
- SHA256 627304aa7e9cf1d57572fcf2a8a93a026a5c4b507c6e57f7ee2f3d3d27fabcd4
- MD5 676f2492b7735db1d47443c43701c14a
- SHA1 0507cf23a5ce0515315e0af4dbdf380449041c96
- SHA512 f57994d532e8fad3f08a014bda4bb922844f815951f14c1668344de1917d00e476df9a28f26ec341f2284ee4ac3b594f00c13e1677b4e22152a5cefe90083b43
- SSDEEP 3072:PXK327xwLECt1Qf+l5dKJjoE1OCkQDA797K56qmcTdLFl:/sLEEQf+MjfOCklB256G
- MD5 SHA1 SHA512 SSDEEP