Analysis
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max time kernel
149s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
11-01-2024 05:34
Static task
static1
Behavioral task
behavioral1
Sample
toolspub2(1).exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
toolspub2(1).exe
Resource
win10v2004-20231222-en
General
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Target
toolspub2(1).exe
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Size
206KB
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MD5
2a62ea99f6e89fb1bcf249917cc87bfc
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SHA1
c5640703e1ed6276babbef5102dc247aaf3c17c8
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SHA256
ecbaeab79bb9ff98c691ffddfd29e59282af48d48a87fbe20cb94dc83c1c89f3
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SHA512
0a07d8b63555871cc339397ecad4e27cb0f75bf11ef66ac0c1070e06336a45936af70140f71bc635a01a218531955a6000906d4250d138ce09781c7e79717566
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SSDEEP
3072:Yp/htLJYeiJiiKnTa0/WxCExkGB4wYxRfHVvBL2A:+TLJYehe0/W8Qjn
Malware Config
Extracted
smokeloader
up3
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Signatures
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Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" explorer.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile explorer.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile\EnableFirewall = "0" explorer.exe -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Sets file execution options in registry 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\k9595yi15ss.exe B2F4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\k9595yi15ss.exe\DisableExceptionChainValidation B2F4.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "aqzhspjur.exe" explorer.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorer.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation B7E7.exe -
Deletes itself 1 IoCs
pid Process 3432 Process not Found -
Executes dropped EXE 3 IoCs
pid Process 2940 B2F4.exe 4932 B7E7.exe 2264 WindowsUpdater.exe -
Loads dropped DLL 2 IoCs
pid Process 2264 WindowsUpdater.exe 2264 WindowsUpdater.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\k9595yi15ss.exe\"" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\k9595yi15ss.exe" explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA B2F4.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
pid Process 2940 B2F4.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
pid pid_target Process procid_target 3332 1500 WerFault.exe 48 232 2356 WerFault.exe 107 -
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 toolspub2(1).exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI toolspub2(1).exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI toolspub2(1).exe -
Checks processor information in registry 2 TTPs 4 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 explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 B2F4.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString B2F4.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 explorer.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer explorer.exe -
Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3" explorer.exe -
Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1" explorer.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Internet Explorer\Main explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1500 toolspub2(1).exe 1500 toolspub2(1).exe 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found 3432 Process not Found -
Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 1500 toolspub2(1).exe 2940 B2F4.exe 2940 B2F4.exe -
Suspicious use of AdjustPrivilegeToken 32 IoCs
description pid Process Token: SeShutdownPrivilege 3432 Process not Found Token: SeCreatePagefilePrivilege 3432 Process not Found Token: SeDebugPrivilege 2940 B2F4.exe Token: SeRestorePrivilege 2940 B2F4.exe Token: SeBackupPrivilege 2940 B2F4.exe Token: SeLoadDriverPrivilege 2940 B2F4.exe Token: SeCreatePagefilePrivilege 2940 B2F4.exe Token: SeShutdownPrivilege 2940 B2F4.exe Token: SeTakeOwnershipPrivilege 2940 B2F4.exe Token: SeChangeNotifyPrivilege 2940 B2F4.exe Token: SeCreateTokenPrivilege 2940 B2F4.exe Token: SeMachineAccountPrivilege 2940 B2F4.exe Token: SeSecurityPrivilege 2940 B2F4.exe Token: SeAssignPrimaryTokenPrivilege 2940 B2F4.exe Token: SeCreateGlobalPrivilege 2940 B2F4.exe Token: 33 2940 B2F4.exe Token: SeDebugPrivilege 2356 explorer.exe Token: SeRestorePrivilege 2356 explorer.exe Token: SeBackupPrivilege 2356 explorer.exe Token: SeLoadDriverPrivilege 2356 explorer.exe Token: SeCreatePagefilePrivilege 2356 explorer.exe Token: SeShutdownPrivilege 2356 explorer.exe Token: SeTakeOwnershipPrivilege 2356 explorer.exe Token: SeChangeNotifyPrivilege 2356 explorer.exe Token: SeCreateTokenPrivilege 2356 explorer.exe Token: SeMachineAccountPrivilege 2356 explorer.exe Token: SeSecurityPrivilege 2356 explorer.exe Token: SeAssignPrimaryTokenPrivilege 2356 explorer.exe Token: SeCreateGlobalPrivilege 2356 explorer.exe Token: 33 2356 explorer.exe Token: SeShutdownPrivilege 3432 Process not Found Token: SeCreatePagefilePrivilege 3432 Process not Found -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3432 Process not Found -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3432 wrote to memory of 2940 3432 Process not Found 106 PID 3432 wrote to memory of 2940 3432 Process not Found 106 PID 3432 wrote to memory of 2940 3432 Process not Found 106 PID 2940 wrote to memory of 2356 2940 B2F4.exe 107 PID 2940 wrote to memory of 2356 2940 B2F4.exe 107 PID 2940 wrote to memory of 2356 2940 B2F4.exe 107 PID 3432 wrote to memory of 4932 3432 Process not Found 108 PID 3432 wrote to memory of 4932 3432 Process not Found 108 PID 3432 wrote to memory of 4932 3432 Process not Found 108 PID 4932 wrote to memory of 2264 4932 B7E7.exe 109 PID 4932 wrote to memory of 2264 4932 B7E7.exe 109 PID 4932 wrote to memory of 2264 4932 B7E7.exe 109 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\toolspub2(1).exe"C:\Users\Admin\AppData\Local\Temp\toolspub2(1).exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1500 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 3682⤵
- Program crash
PID:3332
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1500 -ip 15001⤵PID:4320
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C:\Users\Admin\AppData\Local\Temp\B2F4.exeC:\Users\Admin\AppData\Local\Temp\B2F4.exe1⤵
- Sets file execution options in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe2⤵
- Modifies firewall policy service
- Sets file execution options in registry
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Enumerates system info in registry
- Modifies Internet Explorer Protected Mode
- Modifies Internet Explorer Protected Mode Banner
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
PID:2356 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2356 -s 11283⤵
- Program crash
PID:232
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C:\Users\Admin\AppData\Local\Temp\B7E7.exeC:\Users\Admin\AppData\Local\Temp\B7E7.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4932 -
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2264
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2356 -ip 23561⤵PID:3468
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
91KB
MD568945a5d7d05b9e718d3150b0051133e
SHA199af734fdbc826081b13a7e5e3e2b1c2735e7290
SHA2563f88f77ab14063a928fb382847937a1ae7b57bc4bbf200357c9ece670b2814f2
SHA512d807e5f8b5f2b77237689ec9fcb11ef98b9c66c74cdc5ae71f6a4d6e2229db4460129b537d431ee78610a9d425cd6347711c3054b2d3a5d20258e4319221683a
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Filesize
96KB
MD51b83c1b65b55c9188ba5bf98d0ca12ca
SHA145302fcf4546e750c0e78d2d571ecc7ccc5d8f0a
SHA256b7b25f9ad998a189cc980c415f36fe93e96e5e862a1319727299d7ee16fb7a67
SHA512eef83555302a955d41f617959e52de21fcfd95717ba9b0907986cdf1e5ad61be43f2866a1d14125bbd1a721b8163affcf50b0755a59fe08abac6b6fd34275253