Analysis
- max time kernel
166s - max time network
175s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
07/01/2024, 04:17
General
- Target toolspub2.exe
- Size 301KB
- Sample240107-ewdbaaebek
- SHA256 2e08721f791305935eb167081cc4dc13b58297d3810ef998026c7a0a59f00f40
Malware Config
Extracted
-
smokeloader
-
up3
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 9 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- NSIS installer 3 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 30 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 14 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\toolspub2.exe"C:\Users\Admin\AppData\Local\Temp\toolspub2.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\A42A.exeC:\Users\Admin\AppData\Local\Temp\A42A.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 behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2804 -s 11243⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\DB29.exeC:\Users\Admin\AppData\Local\Temp\DB29.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 368 -p 2804 -ip 28041⤵
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
A42A.exe
DB29.exe
WindowsUpdater.exe
lib.dll
System.dll
memory/2044-2-0x0000000000530000-0x0000000000539000-memory.dmp
memory/2044-3-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2044-4-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2044-6-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2044-9-0x0000000000530000-0x0000000000539000-memory.dmp
memory/2044-1-0x0000000000570000-0x0000000000670000-memory.dmp
memory/2804-37-0x00000000003E0000-0x0000000000814000-memory.dmp
memory/2804-43-0x00000000003E0000-0x0000000000814000-memory.dmp
memory/2804-77-0x0000000000920000-0x00000000009E4000-memory.dmp
memory/2804-62-0x00000000029D0000-0x00000000029D2000-memory.dmp
memory/2804-49-0x0000000000920000-0x00000000009E4000-memory.dmp
memory/2804-46-0x0000000000920000-0x00000000009E4000-memory.dmp
memory/2804-47-0x0000000000FB0000-0x0000000000FBD000-memory.dmp
memory/2804-45-0x0000000000920000-0x00000000009E4000-memory.dmp
memory/2804-44-0x00000000003E0000-0x0000000000813000-memory.dmp
memory/2944-36-0x00000000022C0000-0x0000000002326000-memory.dmp
memory/2944-16-0x0000000000010000-0x000000000006D000-memory.dmp
memory/2944-40-0x0000000002820000-0x0000000002821000-memory.dmp
memory/2944-42-0x00000000022C0000-0x0000000002326000-memory.dmp
memory/2944-19-0x00000000022C0000-0x0000000002326000-memory.dmp
memory/2944-25-0x0000000000820000-0x000000000082D000-memory.dmp
memory/2944-34-0x00000000022C0000-0x0000000002326000-memory.dmp
memory/2944-33-0x0000000002830000-0x000000000283C000-memory.dmp
memory/2944-32-0x0000000002800000-0x0000000002801000-memory.dmp
memory/2944-30-0x00000000022C0000-0x0000000002326000-memory.dmp
memory/2944-18-0x0000000000010000-0x000000000006D000-memory.dmp
memory/2944-29-0x0000000077DB4000-0x0000000077DB5000-memory.dmp
memory/3044-55-0x0000000003910000-0x00000000039D4000-memory.dmp
memory/3044-56-0x0000000077D83000-0x0000000077D84000-memory.dmp
memory/3044-60-0x0000000000750000-0x0000000000CE6000-memory.dmp
memory/3044-54-0x0000000003910000-0x00000000039D4000-memory.dmp
memory/3044-39-0x0000000000750000-0x0000000000CE6000-memory.dmp
memory/3044-23-0x0000000000750000-0x0000000000CE6000-memory.dmp
memory/3488-5-0x0000000002FF0000-0x0000000003006000-memory.dmp
memory/4648-74-0x0000000073370000-0x0000000073A87000-memory.dmp
memory/4648-78-0x0000000073370000-0x0000000073A87000-memory.dmp