Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
12/01/2024, 10:51
General
- Target fbec4956a178bb65221cf87ab537b828.exe
- Size 207KB
- Sample240112-mx8gtafcd8
- SHA256 f22e8c6027000f421c70d5733ff537d1e2e49deb5cc1d6ad3287175dffc2668e
Malware Config
Extracted
-
smokeloader
-
pub1
Extracted
-
smokeloader
-
2020
-
http://host-file-host6.com/
-
http://host-host-file8.com/
Signatures
- BetaBot
Beta Bot is a Trojan that infects computers and disables Antivirus.
- Modifies firewall policy service 2 TTPs 4 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Sets file execution options in registry 2 TTPs 4 IoCs
- Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Deletes itself 1 IoCs
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
- NSIS installer 8 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 4 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs
- Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 32 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
- 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\fbec4956a178bb65221cf87ab537b828.exe"C:\Users\Admin\AppData\Local\Temp\fbec4956a178bb65221cf87ab537b828.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 3682⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 5044 -ip 50441⤵
-
C:\Users\Admin\AppData\Local\Temp\AA88.exeC:\Users\Admin\AppData\Local\Temp\AA88.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
-
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
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4420 -s 11123⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\AEBF.exeC:\Users\Admin\AppData\Local\Temp\AEBF.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 4420 -ip 44201⤵
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
AA88.exe
AA88.exe
AEBF.exe
AEBF.exe
WindowsUpdater.exe
WindowsUpdater.exe
WindowsUpdater.exe
lib.dll
System.dll
memory/232-36-0x00000000008A0000-0x0000000000E36000-memory.dmp
memory/232-43-0x00000000008A0000-0x0000000000E36000-memory.dmp
memory/380-63-0x00000000731F0000-0x0000000073907000-memory.dmp
memory/380-57-0x00000000731F0000-0x0000000073907000-memory.dmp
memory/1040-14-0x0000000000010000-0x000000000006D000-memory.dmp
memory/1040-20-0x0000000077A04000-0x0000000077A05000-memory.dmp
memory/1040-23-0x00000000022F0000-0x0000000002356000-memory.dmp
memory/1040-22-0x0000000002830000-0x000000000283C000-memory.dmp
memory/1040-21-0x0000000002800000-0x0000000002801000-memory.dmp
memory/1040-52-0x00000000022F0000-0x0000000002356000-memory.dmp
memory/1040-17-0x0000000000620000-0x000000000062D000-memory.dmp
memory/1040-16-0x00000000022F0000-0x0000000002356000-memory.dmp
memory/1040-18-0x00000000022F0000-0x0000000002356000-memory.dmp
memory/3520-4-0x0000000003340000-0x0000000003356000-memory.dmp
memory/4420-58-0x0000000002A80000-0x0000000002A81000-memory.dmp
memory/4420-33-0x00000000008E0000-0x00000000009A4000-memory.dmp
memory/4420-29-0x00000000008E0000-0x00000000009A4000-memory.dmp
memory/4420-26-0x0000000000D90000-0x00000000011C4000-memory.dmp
memory/4420-27-0x00000000008E0000-0x00000000009A4000-memory.dmp
memory/4420-61-0x0000000000D90000-0x00000000011C3000-memory.dmp
memory/4420-62-0x00000000008E0000-0x00000000009A4000-memory.dmp
memory/4420-59-0x0000000004630000-0x0000000004632000-memory.dmp
memory/4420-24-0x0000000000D90000-0x00000000011C4000-memory.dmp
memory/5044-7-0x0000000000400000-0x0000000000439000-memory.dmp
memory/5044-3-0x0000000000400000-0x0000000000439000-memory.dmp
memory/5044-1-0x00000000005F0000-0x00000000006F0000-memory.dmp
memory/5044-2-0x00000000005A0000-0x00000000005A9000-memory.dmp