Analysis
- max time kernel
26s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
12/01/2024, 22:46
General
- Target 0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058.exe
- Size 178KB
- Sample240112-2qbxlagaf2
- SHA256 0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058
Malware Config
Extracted
-
smokeloader
-
up3
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
- Suspicious use of SetThreadContext 1 IoCs
- 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 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 9 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\0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058.exe"C:\Users\Admin\AppData\Local\Temp\0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058.exe"C:\Users\Admin\AppData\Local\Temp\0f73dc9673062de7bb486da601791e67e78e9aaae6a1dc5fabbdf5abe5fcc058.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 3283⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4484 -ip 44841⤵
-
C:\Users\Admin\AppData\Local\Temp\B3CF.exeC:\Users\Admin\AppData\Local\Temp\B3CF.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 1104 -s 10763⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\BAC5.exeC:\Users\Admin\AppData\Local\Temp\BAC5.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 196 -p 1104 -ip 11041⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
B3CF.exe
BAC5.exe
BAC5.exe
WindowsUpdater.exe
WindowsUpdater.exe
WindowsUpdater.exe
lib.dll
System.dll
memory/644-2-0x00000000008D0000-0x00000000008D9000-memory.dmp
memory/644-1-0x0000000000A30000-0x0000000000B30000-memory.dmp
memory/1104-28-0x0000000000590000-0x00000000009C4000-memory.dmp
memory/1104-64-0x0000000000CD0000-0x0000000000D94000-memory.dmp
memory/1104-63-0x0000000000590000-0x00000000009C3000-memory.dmp
memory/1104-26-0x0000000000590000-0x00000000009C4000-memory.dmp
memory/1104-61-0x0000000004560000-0x0000000004562000-memory.dmp
memory/1104-30-0x0000000000CD0000-0x0000000000D94000-memory.dmp
memory/1104-32-0x0000000000CD0000-0x0000000000D94000-memory.dmp
memory/1104-29-0x0000000000CD0000-0x0000000000D94000-memory.dmp
memory/1372-60-0x00000000727D0000-0x0000000072EE7000-memory.dmp
memory/1372-65-0x00000000727D0000-0x0000000072EE7000-memory.dmp
memory/1404-18-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/1404-25-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/1404-34-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/1404-19-0x0000000002640000-0x000000000264D000-memory.dmp
memory/1404-16-0x0000000000010000-0x000000000006D000-memory.dmp
memory/1404-20-0x0000000077294000-0x0000000077295000-memory.dmp
memory/1404-35-0x0000000002820000-0x0000000002821000-memory.dmp
memory/1404-21-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/1404-23-0x0000000002800000-0x0000000002801000-memory.dmp
memory/1404-24-0x0000000002830000-0x000000000283C000-memory.dmp
memory/3404-5-0x0000000002A30000-0x0000000002A46000-memory.dmp
memory/4192-48-0x0000000000FC0000-0x0000000001556000-memory.dmp
memory/4192-41-0x0000000000FC0000-0x0000000001556000-memory.dmp
memory/4484-8-0x0000000000400000-0x0000000000409000-memory.dmp
memory/4484-3-0x0000000000400000-0x0000000000409000-memory.dmp
memory/4484-4-0x0000000000400000-0x0000000000409000-memory.dmp