Analysis
- max time kernel
24s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
07/01/2024, 19:30
General
- Target toolspub1.exe
- Size 311KB
- Sample240107-x7479addf9
- SHA256 0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74
Malware Config
Extracted
-
smokeloader
-
pub1
Extracted
-
smokeloader
-
2020
-
http://host-file-host6.com/
-
http://host-host-file8.com/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Program crash 2 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 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 16 IoCs
- Suspicious use of WriteProcessMemory 3 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 3156 -s 3682⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3156 -ip 31561⤵
-
C:\Users\Admin\AppData\Local\Temp\AFA9.exeC:\Users\Admin\AppData\Local\Temp\AFA9.exe1⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe2⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3684 -s 10723⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\B547.exeC:\Users\Admin\AppData\Local\Temp\B547.exe1⤵
-
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"2⤵
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3684 -ip 36841⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
AFA9.exe
memory/3012-46-0x0000000000940000-0x0000000000ED6000-memory.dmp
memory/3012-39-0x0000000000940000-0x0000000000ED6000-memory.dmp
memory/3156-3-0x0000000000400000-0x0000000000454000-memory.dmp
memory/3156-2-0x0000000000700000-0x0000000000709000-memory.dmp
memory/3156-1-0x0000000000720000-0x0000000000820000-memory.dmp
memory/3156-7-0x0000000000400000-0x0000000000454000-memory.dmp
memory/3436-4-0x0000000002070000-0x0000000002086000-memory.dmp
memory/3684-24-0x0000000000FC0000-0x00000000013F4000-memory.dmp
memory/3684-28-0x0000000000EC0000-0x0000000000F84000-memory.dmp
memory/3684-59-0x0000000000EC0000-0x0000000000F84000-memory.dmp
memory/3684-60-0x0000000003620000-0x0000000003622000-memory.dmp
memory/3684-63-0x0000000000EC0000-0x0000000000F84000-memory.dmp
memory/3684-62-0x0000000000FC0000-0x00000000013F3000-memory.dmp
memory/3684-27-0x0000000000EC0000-0x0000000000F84000-memory.dmp
memory/3684-26-0x0000000000FC0000-0x00000000013F4000-memory.dmp
memory/3684-30-0x0000000000EC0000-0x0000000000F84000-memory.dmp
memory/4372-20-0x00000000771E4000-0x00000000771E5000-memory.dmp
memory/4372-23-0x0000000002290000-0x00000000022F6000-memory.dmp
memory/4372-33-0x0000000002820000-0x0000000002821000-memory.dmp
memory/4372-32-0x0000000002290000-0x00000000022F6000-memory.dmp
memory/4372-17-0x0000000002640000-0x000000000264D000-memory.dmp
memory/4372-14-0x0000000000010000-0x000000000006D000-memory.dmp
memory/4372-16-0x0000000002290000-0x00000000022F6000-memory.dmp
memory/4372-18-0x0000000002290000-0x00000000022F6000-memory.dmp
memory/4372-21-0x0000000002800000-0x0000000002801000-memory.dmp
memory/4372-22-0x0000000002830000-0x000000000283C000-memory.dmp
memory/4684-58-0x0000000072720000-0x0000000072E37000-memory.dmp
memory/4684-64-0x0000000072720000-0x0000000072E37000-memory.dmp