Analysis
-
max time kernel
164s -
max time network
170s -
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 01:28
Static task
static1
Behavioral task
behavioral1
Sample
dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe
Resource
win10v2004-20231215-en
General
-
Target
dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe
-
Size
312KB
-
MD5
3ed9f2c6339d6513940c15d4a58378af
-
SHA1
bd75e9514537bb38e9ba648c92a837e7d8d7b66d
-
SHA256
dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb
-
SHA512
530d1c04fd3acc0a35b54221ae5e25b4ab02fdf656bfda516bab009e94f292cffec83a8480cf95c3bacddc295a845206e6409658c837c3c78f0d1aca5cdf8036
-
SSDEEP
6144:V6xELH+Ym/eqLhvhXfRWK4Pg343g77ji:cxEL+HeqLh2K45QX
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Signatures
-
Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile\EnableFirewall = "0" explorer.exe 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 -
SmokeLoader
Modular backdoor trojan in use since 2014.
-
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\rstrui.exe explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "buoafcih.exe" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\91ouoekyu1au.exe 4FFB.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\91ouoekyu1au.exe\DisableExceptionChainValidation 4FFB.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 5AD9.exe -
Deletes itself 1 IoCs
pid Process 3512 Process not Found -
Executes dropped EXE 3 IoCs
pid Process 452 4FFB.exe 1332 5AD9.exe 4920 WindowsUpdater.exe -
Loads dropped DLL 2 IoCs
pid Process 4920 WindowsUpdater.exe 4920 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\\91ouoekyu1au.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\\91ouoekyu1au.exe\"" explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 4FFB.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
pid Process 452 4FFB.exe 388 explorer.exe 388 explorer.exe 388 explorer.exe 388 explorer.exe 388 explorer.exe 388 explorer.exe 388 explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
NSIS installer 4 IoCs
resource yara_rule behavioral2/files/0x000300000001e7f6-20.dat nsis_installer_2 behavioral2/files/0x000300000001e7f6-21.dat nsis_installer_2 behavioral2/files/0x000200000001e7f8-49.dat nsis_installer_1 behavioral2/files/0x000200000001e7f8-49.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 dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.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 4FFB.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 4FFB.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\1\2500 = "3" explorer.exe 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 -
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 4968 dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe 4968 dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found 3512 Process not Found -
Suspicious behavior: MapViewOfSection 5 IoCs
pid Process 4968 dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe 452 4FFB.exe 452 4FFB.exe 388 explorer.exe 388 explorer.exe -
Suspicious use of AdjustPrivilegeToken 28 IoCs
description pid Process Token: SeDebugPrivilege 452 4FFB.exe Token: SeRestorePrivilege 452 4FFB.exe Token: SeBackupPrivilege 452 4FFB.exe Token: SeLoadDriverPrivilege 452 4FFB.exe Token: SeCreatePagefilePrivilege 452 4FFB.exe Token: SeShutdownPrivilege 452 4FFB.exe Token: SeTakeOwnershipPrivilege 452 4FFB.exe Token: SeChangeNotifyPrivilege 452 4FFB.exe Token: SeCreateTokenPrivilege 452 4FFB.exe Token: SeMachineAccountPrivilege 452 4FFB.exe Token: SeSecurityPrivilege 452 4FFB.exe Token: SeAssignPrimaryTokenPrivilege 452 4FFB.exe Token: SeCreateGlobalPrivilege 452 4FFB.exe Token: 33 452 4FFB.exe Token: SeDebugPrivilege 388 explorer.exe Token: SeRestorePrivilege 388 explorer.exe Token: SeBackupPrivilege 388 explorer.exe Token: SeLoadDriverPrivilege 388 explorer.exe Token: SeCreatePagefilePrivilege 388 explorer.exe Token: SeShutdownPrivilege 388 explorer.exe Token: SeTakeOwnershipPrivilege 388 explorer.exe Token: SeChangeNotifyPrivilege 388 explorer.exe Token: SeCreateTokenPrivilege 388 explorer.exe Token: SeMachineAccountPrivilege 388 explorer.exe Token: SeSecurityPrivilege 388 explorer.exe Token: SeAssignPrimaryTokenPrivilege 388 explorer.exe Token: SeCreateGlobalPrivilege 388 explorer.exe Token: 33 388 explorer.exe -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3512 Process not Found -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 3512 wrote to memory of 452 3512 Process not Found 96 PID 3512 wrote to memory of 452 3512 Process not Found 96 PID 3512 wrote to memory of 452 3512 Process not Found 96 PID 3512 wrote to memory of 1332 3512 Process not Found 99 PID 3512 wrote to memory of 1332 3512 Process not Found 99 PID 3512 wrote to memory of 1332 3512 Process not Found 99 PID 452 wrote to memory of 388 452 4FFB.exe 103 PID 452 wrote to memory of 388 452 4FFB.exe 103 PID 452 wrote to memory of 388 452 4FFB.exe 103 PID 388 wrote to memory of 1332 388 explorer.exe 99 PID 388 wrote to memory of 1332 388 explorer.exe 99 PID 1332 wrote to memory of 4920 1332 5AD9.exe 108 PID 1332 wrote to memory of 4920 1332 5AD9.exe 108 PID 1332 wrote to memory of 4920 1332 5AD9.exe 108 PID 388 wrote to memory of 4920 388 explorer.exe 108 PID 388 wrote to memory of 4920 388 explorer.exe 108 -
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
-
C:\Users\Admin\AppData\Local\Temp\dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe"C:\Users\Admin\AppData\Local\Temp\dd02b4f83462302b06278dea2591a9d32ab4534743f96b44b24d642e55b721fb.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4968
-
C:\Users\Admin\AppData\Local\Temp\4FFB.exeC:\Users\Admin\AppData\Local\Temp\4FFB.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:452 -
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:388
-
-
C:\Users\Admin\AppData\Local\Temp\5AD9.exeC:\Users\Admin\AppData\Local\Temp\5AD9.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1332 -
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4920
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1332 -ip 13321⤵PID:2944
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 388 -ip 3881⤵PID:404
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
Loading Replay Monitor...
Downloads
-
Filesize
360KB
MD580c413180b6bd0dd664adc4e0665b494
SHA1e791e4a3391fc6b7bcb58399cd4fa3c52a06b940
SHA2566d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880
SHA512347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a
-
Filesize
4.5MB
MD5639e6a982e7cc6169af6f4cd87eb15a4
SHA1b12dbc5c7aa198af7ac87ec0e22c3a7ca6ad7705
SHA256c2186dbb1b823d1b18160bdcfa1bae50a5384a6784b709faa297b25cc9d3a9c0
SHA512518935a3b0f27b84f8130ec11657e9ee86dcb3844720f7466ae6f55dd8b5bfdae8bcc92d29217a4cd52809dd85f6a0da1ccab6fa247fe480f262bfa7ee9623ac
-
Filesize
5.6MB
MD5f7c6d870f0de20c40388b493d2b315d2
SHA11b25397776ae0481184f151ec3e608f3b65ac8e6
SHA2564e07a3356bb6ffaa23224884b2ec5d79b6f956acc186475adac89867c0d623d9
SHA5120619a22579ee70745034c547c53180d4319c3dc5db326dfecc275cd3b3025f354a3e6fac093a925611a5e0cca5ff9dbcfbfe246d376bb173829f332b670f5655
-
Filesize
2.2MB
MD50badb0e573d95db49ac23c11163d9386
SHA1d86dd20e4498ba5576272df07cd71dd9ed40bf8d
SHA2565ebb608342d1306743d1ab56bb587b00d7e14737f5af48be3fa738a98cf29668
SHA512a83d397fdcf2b749aac8f1db38a991b06a70c58d21c84d09cd8a732ee744287e7d7d58edeb817006b6ee245ed313993a3280aea32fd4c5a079b4f960ab35eff8
-
Filesize
2.2MB
MD5bc94fe5f3a7d234dceefa5a25c109358
SHA1eefd19123cb554bd975d9848eff08f195c7794bb
SHA256fdbd693e2a9eab791967e78eef8e1a3423c63b570d6fc8ccd9367be931c779c4
SHA512650632899edc1bce009244cf228500c26df33c2036f774f60529c10bf7b277a49d3e635846097cf2d821a54e066a07f5f6ef2be055e1054e8c4a1a938fad9c69
-
Filesize
12KB
MD5dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1c9206ced48d1e5bc648b1d0f54cccc18bf643a14
SHA2567fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
SHA5124910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f