Analysis
-
max time kernel
152s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
13-01-2024 01:13
Static task
static1
Behavioral task
behavioral1
Sample
2a62ea99f6e89fb1bcf249917cc87bfc.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2a62ea99f6e89fb1bcf249917cc87bfc.exe
Resource
win10v2004-20231215-en
General
-
Target
2a62ea99f6e89fb1bcf249917cc87bfc.exe
-
Size
206KB
-
MD5
2a62ea99f6e89fb1bcf249917cc87bfc
-
SHA1
c5640703e1ed6276babbef5102dc247aaf3c17c8
-
SHA256
ecbaeab79bb9ff98c691ffddfd29e59282af48d48a87fbe20cb94dc83c1c89f3
-
SHA512
0a07d8b63555871cc339397ecad4e27cb0f75bf11ef66ac0c1070e06336a45936af70140f71bc635a01a218531955a6000906d4250d138ce09781c7e79717566
-
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
-
Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process 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 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 -
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\c9cy3u73157s.exe 3B20.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\c9cy3u73157s.exe\DisableExceptionChainValidation 3B20.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 = "imzasr.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation 41B8.exe -
Deletes itself 1 IoCs
pid Process 3444 Process not Found -
Executes dropped EXE 3 IoCs
pid Process 2592 3B20.exe 792 41B8.exe 4968 WindowsUpdater.exe -
Loads dropped DLL 2 IoCs
pid Process 4968 WindowsUpdater.exe 4968 WindowsUpdater.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\c9cy3u73157s.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\c9cy3u73157s.exe\"" explorer.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 3B20.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
pid Process 2592 3B20.exe 2840 explorer.exe 2840 explorer.exe 2840 explorer.exe 2840 explorer.exe 2840 explorer.exe 2840 explorer.exe 2840 explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Program crash 1 IoCs
pid pid_target Process procid_target 2696 2840 WerFault.exe 102 -
NSIS installer 8 IoCs
resource yara_rule behavioral2/files/0x0007000000023219-29.dat nsis_installer_2 behavioral2/files/0x0007000000023219-30.dat nsis_installer_2 behavioral2/files/0x000600000002321a-43.dat nsis_installer_1 behavioral2/files/0x000600000002321a-43.dat nsis_installer_2 behavioral2/files/0x000600000002321a-45.dat nsis_installer_1 behavioral2/files/0x000600000002321a-45.dat nsis_installer_2 behavioral2/files/0x000600000002321a-47.dat nsis_installer_1 behavioral2/files/0x000600000002321a-47.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 2a62ea99f6e89fb1bcf249917cc87bfc.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 2a62ea99f6e89fb1bcf249917cc87bfc.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 2a62ea99f6e89fb1bcf249917cc87bfc.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 explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 3B20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 3B20.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer explorer.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS explorer.exe -
Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\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-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1" explorer.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Software\Microsoft\Internet Explorer\Main explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4864 2a62ea99f6e89fb1bcf249917cc87bfc.exe 4864 2a62ea99f6e89fb1bcf249917cc87bfc.exe 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found 3444 Process not Found -
Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 4864 2a62ea99f6e89fb1bcf249917cc87bfc.exe 2592 3B20.exe 2592 3B20.exe -
Suspicious use of AdjustPrivilegeToken 30 IoCs
description pid Process Token: SeDebugPrivilege 2592 3B20.exe Token: SeRestorePrivilege 2592 3B20.exe Token: SeBackupPrivilege 2592 3B20.exe Token: SeLoadDriverPrivilege 2592 3B20.exe Token: SeCreatePagefilePrivilege 2592 3B20.exe Token: SeShutdownPrivilege 2592 3B20.exe Token: SeTakeOwnershipPrivilege 2592 3B20.exe Token: SeChangeNotifyPrivilege 2592 3B20.exe Token: SeCreateTokenPrivilege 2592 3B20.exe Token: SeMachineAccountPrivilege 2592 3B20.exe Token: SeSecurityPrivilege 2592 3B20.exe Token: SeAssignPrimaryTokenPrivilege 2592 3B20.exe Token: SeCreateGlobalPrivilege 2592 3B20.exe Token: 33 2592 3B20.exe Token: SeDebugPrivilege 2840 explorer.exe Token: SeRestorePrivilege 2840 explorer.exe Token: SeBackupPrivilege 2840 explorer.exe Token: SeLoadDriverPrivilege 2840 explorer.exe Token: SeCreatePagefilePrivilege 2840 explorer.exe Token: SeShutdownPrivilege 2840 explorer.exe Token: SeTakeOwnershipPrivilege 2840 explorer.exe Token: SeChangeNotifyPrivilege 2840 explorer.exe Token: SeCreateTokenPrivilege 2840 explorer.exe Token: SeMachineAccountPrivilege 2840 explorer.exe Token: SeSecurityPrivilege 2840 explorer.exe Token: SeAssignPrimaryTokenPrivilege 2840 explorer.exe Token: SeCreateGlobalPrivilege 2840 explorer.exe Token: 33 2840 explorer.exe Token: SeShutdownPrivilege 3444 Process not Found Token: SeCreatePagefilePrivilege 3444 Process not Found -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3444 Process not Found -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3444 wrote to memory of 2592 3444 Process not Found 101 PID 3444 wrote to memory of 2592 3444 Process not Found 101 PID 3444 wrote to memory of 2592 3444 Process not Found 101 PID 2592 wrote to memory of 2840 2592 3B20.exe 102 PID 2592 wrote to memory of 2840 2592 3B20.exe 102 PID 2592 wrote to memory of 2840 2592 3B20.exe 102 PID 3444 wrote to memory of 792 3444 Process not Found 103 PID 3444 wrote to memory of 792 3444 Process not Found 103 PID 3444 wrote to memory of 792 3444 Process not Found 103 PID 792 wrote to memory of 4968 792 41B8.exe 104 PID 792 wrote to memory of 4968 792 41B8.exe 104 PID 792 wrote to memory of 4968 792 41B8.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
-
C:\Users\Admin\AppData\Local\Temp\2a62ea99f6e89fb1bcf249917cc87bfc.exe"C:\Users\Admin\AppData\Local\Temp\2a62ea99f6e89fb1bcf249917cc87bfc.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4864
-
C:\Users\Admin\AppData\Local\Temp\3B20.exeC:\Users\Admin\AppData\Local\Temp\3B20.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:2592 -
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:2840 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 11483⤵
- Program crash
PID:2696
-
-
-
C:\Users\Admin\AppData\Local\Temp\41B8.exeC:\Users\Admin\AppData\Local\Temp\41B8.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:792 -
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4968
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2840 -ip 28401⤵PID:2548
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
1.7MB
MD5587cb299d7fd57abc9e0aeed7f9c8e8c
SHA180eb78e394e74a944e6ed697d92812ffa6ebf733
SHA256ba150b576aa9c8ad9e399e4d153ab0f1d2d5c6555414a57d5984cab8eb54aa93
SHA512e06ecadb48108b8686c903fe249448c6125846c124d342681754a34fe010b759c8e2398a06bd41a5d36255f5daacf1ba01b58b3cb67b8313472fe75268e081e8
-
Filesize
2.1MB
MD5d9d65da9a42dfd6574af99fd91ad6d36
SHA1c51dd2c281b04f5b6ef939ef5315471e35794456
SHA256067b992bb03ae9b46b94cbcb352f6fb248b0ea125ddc8ee302e987556677c700
SHA5128ff32f31b4b9a6aab12fe5486f2f4ecb070c29ea79ced2ecf21fcac1e71cb23991a60dd2f98db72f211de322fb4cf59f2bdb27e45717ab874af9345779ebfe48
-
Filesize
1.2MB
MD5ce5f4d3f4c40f133cea7ac0082afa159
SHA1b9b46711c7d0facd8f3b79e82d5a3a0165003ee4
SHA256d4a4182eb33942ddd75922823eccf3bdc7e903b47f15d30f2e08fc90195bacb3
SHA51225d8b708f9acb22e87afbec55ee26bf9f1b8cb1f26c8980fd57cefba18463bc97936f1dff35d8ffb4a0f7f048573a5d027091c053f5f856cdcd6f6c5d5bd56f0
-
Filesize
471KB
MD58b4a7189e18023d4c697b2900e8c6138
SHA1354833010578649f5345f7ce167e759d54473908
SHA256c9e44e7e3f2d1720aba0546106f32822113bb10ec92f9c6a93dd1271218e3a60
SHA51214ce4e5e51e98f73278e9cfc9bf4020d6e42afb0178b5c53ba589f75284d83ab78c9e40fcb68d3dd8c8f012bc94de1d96a70251fc7017b92e07f0edd4cfa08a3
-
Filesize
628KB
MD502a41db807f66e2c26f8bc4b90770af4
SHA187cc2ccd164f582078b04d351029d17a3727c835
SHA2568f4d8593bbcc81ee99a8ce0e7b562e1f222daf6368d610c08c5ea75d85f43af7
SHA512b180411bfae92ae723b3da5f584b3c5e1ecd5eb36440458a463353410cb4d80f21a56c8aeb09860d5b9f61062bbb060d08f1991369461a5dd5b10991caeaf7bb
-
Filesize
395KB
MD554f678e79d67753243a62f19fc208c26
SHA1b228bdc24b7342caa9d289eaef6693798bf41a97
SHA2562bbaea38a01cd9c2b218e314dbb534056ab91a935c78d9e8a290113745fc6094
SHA51217360fa35c280aa2e73cb13245c49b871f79efb7ca58edf8ba272e5ea77defe7772fd7c30782ad27e0234d065b3b0e461bd9c94a283955d05996194784c00afb
-
Filesize
12KB
MD5dd87a973e01c5d9f8e0fcc81a0af7c7a
SHA1c9206ced48d1e5bc648b1d0f54cccc18bf643a14
SHA2567fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
SHA5124910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f