Analysis
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max time kernel
152s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
11-01-2024 16:24
Static task
static1
Behavioral task
behavioral1
Sample
bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe
Resource
win10v2004-20231215-en
General
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Target
bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe
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Size
311KB
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MD5
f82f1ffb0d25ac3da34e40c4b9b7a98a
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SHA1
e7394070f344a47762f4db7569b3bf7f80ea2a59
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SHA256
bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc
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SHA512
6f9fb098f2be54c36865ac6428472810031a2d66db91e36be412d3766cb7d5349762190b84e700dcd6a92722a8633f7c24d696358c1bb4aaddd94d511d6627cc
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SSDEEP
3072:U8EGKLRYBvIZxOr9tscc50CxPNh4DwU+C1Gr15sEI3pDwFwj0:UljLRlZAtsd50MP4E5q93n
Malware Config
Extracted
smokeloader
pub1
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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "bkexcp.exe" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\qy5ws91coya.exe 9CA8.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\qy5ws91coya.exe\DisableExceptionChainValidation 9CA8.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation A7F4.exe -
Deletes itself 1 IoCs
pid Process 3428 Process not Found -
Executes dropped EXE 3 IoCs
pid Process 1588 9CA8.exe 2220 A7F4.exe 4040 WindowsUpdater.exe -
Loads dropped DLL 2 IoCs
pid Process 4040 WindowsUpdater.exe 4040 WindowsUpdater.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\qy5ws91coya.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\qy5ws91coya.exe\"" explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 9CA8.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
pid Process 1588 9CA8.exe 2272 explorer.exe 2272 explorer.exe 2272 explorer.exe 2272 explorer.exe 2272 explorer.exe 2272 explorer.exe 2272 explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 2308 2272 WerFault.exe 101 -
NSIS installer 4 IoCs
resource yara_rule behavioral2/files/0x000500000001e7ff-29.dat nsis_installer_2 behavioral2/files/0x000500000001e7ff-31.dat nsis_installer_2 behavioral2/files/0x000200000001e802-44.dat nsis_installer_1 behavioral2/files/0x000200000001e802-44.dat nsis_installer_2 -
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 bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.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 opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 9CA8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 9CA8.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" explorer.exe -
Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1" explorer.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3020 bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe 3020 bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found 3428 Process not Found -
Suspicious behavior: MapViewOfSection 4 IoCs
pid Process 3020 bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe 1588 9CA8.exe 1588 9CA8.exe 2272 explorer.exe -
Suspicious use of AdjustPrivilegeToken 30 IoCs
description pid Process Token: SeDebugPrivilege 1588 9CA8.exe Token: SeRestorePrivilege 1588 9CA8.exe Token: SeBackupPrivilege 1588 9CA8.exe Token: SeLoadDriverPrivilege 1588 9CA8.exe Token: SeCreatePagefilePrivilege 1588 9CA8.exe Token: SeShutdownPrivilege 1588 9CA8.exe Token: SeTakeOwnershipPrivilege 1588 9CA8.exe Token: SeChangeNotifyPrivilege 1588 9CA8.exe Token: SeCreateTokenPrivilege 1588 9CA8.exe Token: SeMachineAccountPrivilege 1588 9CA8.exe Token: SeSecurityPrivilege 1588 9CA8.exe Token: SeAssignPrimaryTokenPrivilege 1588 9CA8.exe Token: SeCreateGlobalPrivilege 1588 9CA8.exe Token: 33 1588 9CA8.exe Token: SeDebugPrivilege 2272 explorer.exe Token: SeRestorePrivilege 2272 explorer.exe Token: SeBackupPrivilege 2272 explorer.exe Token: SeLoadDriverPrivilege 2272 explorer.exe Token: SeCreatePagefilePrivilege 2272 explorer.exe Token: SeShutdownPrivilege 2272 explorer.exe Token: SeTakeOwnershipPrivilege 2272 explorer.exe Token: SeChangeNotifyPrivilege 2272 explorer.exe Token: SeCreateTokenPrivilege 2272 explorer.exe Token: SeMachineAccountPrivilege 2272 explorer.exe Token: SeSecurityPrivilege 2272 explorer.exe Token: SeAssignPrimaryTokenPrivilege 2272 explorer.exe Token: SeCreateGlobalPrivilege 2272 explorer.exe Token: 33 2272 explorer.exe Token: SeShutdownPrivilege 3428 Process not Found Token: SeCreatePagefilePrivilege 3428 Process not Found -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3428 Process not Found -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3428 wrote to memory of 1588 3428 Process not Found 100 PID 3428 wrote to memory of 1588 3428 Process not Found 100 PID 3428 wrote to memory of 1588 3428 Process not Found 100 PID 1588 wrote to memory of 2272 1588 9CA8.exe 101 PID 1588 wrote to memory of 2272 1588 9CA8.exe 101 PID 1588 wrote to memory of 2272 1588 9CA8.exe 101 PID 3428 wrote to memory of 2220 3428 Process not Found 102 PID 3428 wrote to memory of 2220 3428 Process not Found 102 PID 3428 wrote to memory of 2220 3428 Process not Found 102 PID 2220 wrote to memory of 4040 2220 A7F4.exe 104 PID 2220 wrote to memory of 4040 2220 A7F4.exe 104 PID 2220 wrote to memory of 4040 2220 A7F4.exe 104 PID 2272 wrote to memory of 4040 2272 explorer.exe 104 PID 2272 wrote to memory of 4040 2272 explorer.exe 104 -
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\bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe"C:\Users\Admin\AppData\Local\Temp\bbd42165fc7bd693cf338c6e1ab0d962727cd8d58cbf9effff3036994db895fc.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3020
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C:\Users\Admin\AppData\Local\Temp\9CA8.exeC:\Users\Admin\AppData\Local\Temp\9CA8.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:1588 -
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 behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2272 -s 10443⤵
- Program crash
PID:2308
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C:\Users\Admin\AppData\Local\Temp\A7F4.exeC:\Users\Admin\AppData\Local\Temp\A7F4.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4040
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2272 -ip 22721⤵PID:5044
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
360KB
MD580c413180b6bd0dd664adc4e0665b494
SHA1e791e4a3391fc6b7bcb58399cd4fa3c52a06b940
SHA2566d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880
SHA512347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a
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Filesize
3.1MB
MD5c892fd85a6c67dc89a1bf42778c8c4d1
SHA18402bcf6cdedcd9826f07b9d66b7e3fcd217a525
SHA256b824f593362de8a9535dab64d0ef1002b084ba1d0633ea439c4b108ef29a2383
SHA5121abe8f63363b8d4c6bd7e646224f3b658c6db5bdb99430075f80dce3143a8a12d1afbd54184d9cf363b329d8a26186b512750387e5da0b1235d68c634ca8f4ab
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Filesize
2.7MB
MD57fbe070a8eaff27f63e7436e4ae6c46f
SHA1160dd7c51ecb38259c15dc64a770fd241bf2c265
SHA25697cd02af47c9df72e1c036e7ed4c81720c541b9928d583fa10d76fd36a889b6c
SHA512dbd4e96662d583bb829ce45d8f2fdb348f12fceff01869f28292408a73d9204f629ffbef848794537368139f335fbfc3db87af6c3ec00b02a931986e51846339
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Filesize
2.2MB
MD50badb0e573d95db49ac23c11163d9386
SHA1d86dd20e4498ba5576272df07cd71dd9ed40bf8d
SHA2565ebb608342d1306743d1ab56bb587b00d7e14737f5af48be3fa738a98cf29668
SHA512a83d397fdcf2b749aac8f1db38a991b06a70c58d21c84d09cd8a732ee744287e7d7d58edeb817006b6ee245ed313993a3280aea32fd4c5a079b4f960ab35eff8
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Filesize
2.2MB
MD5bc94fe5f3a7d234dceefa5a25c109358
SHA1eefd19123cb554bd975d9848eff08f195c7794bb
SHA256fdbd693e2a9eab791967e78eef8e1a3423c63b570d6fc8ccd9367be931c779c4
SHA512650632899edc1bce009244cf228500c26df33c2036f774f60529c10bf7b277a49d3e635846097cf2d821a54e066a07f5f6ef2be055e1054e8c4a1a938fad9c69
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Filesize
12KB
MD5dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1c9206ced48d1e5bc648b1d0f54cccc18bf643a14
SHA2567fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
SHA5124910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f