Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
07/01/2024, 04:17
General
- Target toolspub1.exe
- Size 300KB
- Sample240107-ewdbaaebej
- SHA256 2739b41aab3ff3cc0727ada7ad04162f0379ef151c7d4b4296e963a2a74891c5
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 1 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\toolspub1.exe"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 552 -s 3682⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 552 -ip 5521⤵
-
C:\Users\Admin\AppData\Local\Temp\9F3D.exeC:\Users\Admin\AppData\Local\Temp\9F3D.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 2704 -s 10803⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\A45F.exeC:\Users\Admin\AppData\Local\Temp\A45F.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 480 -p 2704 -ip 27041⤵
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
9F3D.exe
A45F.exe
memory/448-18-0x00000000022B0000-0x0000000002316000-memory.dmp
memory/448-22-0x0000000002830000-0x000000000283C000-memory.dmp
memory/448-32-0x0000000002820000-0x0000000002821000-memory.dmp
memory/448-17-0x00000000005A0000-0x00000000005AD000-memory.dmp
memory/448-14-0x0000000000010000-0x000000000006D000-memory.dmp
memory/448-16-0x00000000022B0000-0x0000000002316000-memory.dmp
memory/448-23-0x00000000022B0000-0x0000000002316000-memory.dmp
memory/448-62-0x0000000002820000-0x0000000002821000-memory.dmp
memory/448-21-0x0000000002800000-0x0000000002801000-memory.dmp
memory/448-20-0x0000000076EF4000-0x0000000076EF5000-memory.dmp
memory/448-31-0x00000000022B0000-0x0000000002316000-memory.dmp
memory/552-3-0x0000000000400000-0x0000000000451000-memory.dmp
memory/552-1-0x00000000004B0000-0x00000000005B0000-memory.dmp
memory/552-2-0x00000000005E0000-0x00000000005E9000-memory.dmp
memory/552-7-0x0000000000400000-0x0000000000451000-memory.dmp
memory/2704-24-0x0000000000460000-0x0000000000894000-memory.dmp
memory/2704-26-0x0000000000460000-0x0000000000894000-memory.dmp
memory/2704-29-0x0000000000C00000-0x0000000000CC4000-memory.dmp
memory/2704-27-0x0000000000C00000-0x0000000000CC4000-memory.dmp
memory/2704-61-0x0000000000C00000-0x0000000000CC4000-memory.dmp
memory/2704-60-0x0000000000460000-0x0000000000893000-memory.dmp
memory/2704-58-0x0000000004430000-0x0000000004432000-memory.dmp
memory/3420-4-0x0000000001FF0000-0x0000000002006000-memory.dmp
memory/4952-38-0x00000000002E0000-0x0000000000876000-memory.dmp
memory/4952-45-0x00000000002E0000-0x0000000000876000-memory.dmp
memory/5068-57-0x0000000072430000-0x0000000072B47000-memory.dmp
memory/5068-63-0x0000000072430000-0x0000000072B47000-memory.dmp