Analysis
- max time kernel
22s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
05/01/2024, 12:44
General
- Target 9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384.exe
- Size 201KB
- Sample240105-pyzbmsdcb3
- SHA256 9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384
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\9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384.exe"C:\Users\Admin\AppData\Local\Temp\9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384.exe"C:\Users\Admin\AppData\Local\Temp\9a23805b493744d541cc279f7676d724e7a0f2824612fc9393c68d49ea2eb384.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 3323⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2168 -ip 21681⤵
-
C:\Users\Admin\AppData\Local\Temp\9114.exeC:\Users\Admin\AppData\Local\Temp\9114.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 2564 -s 10843⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\979D.exeC:\Users\Admin\AppData\Local\Temp\979D.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 524 -p 2564 -ip 25641⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
9114.exe
9114.exe
979D.exe
979D.exe
WindowsUpdater.exe
WindowsUpdater.exe
WindowsUpdater.exe
lib.dll
System.dll
memory/1952-60-0x0000000072410000-0x0000000072B27000-memory.dmp
memory/1952-66-0x0000000072410000-0x0000000072B27000-memory.dmp
memory/2168-8-0x0000000000400000-0x0000000000409000-memory.dmp
memory/2168-4-0x0000000000400000-0x0000000000409000-memory.dmp
memory/2168-3-0x0000000000400000-0x0000000000409000-memory.dmp
memory/2564-32-0x0000000000730000-0x00000000007F4000-memory.dmp
memory/2564-61-0x0000000000730000-0x00000000007F4000-memory.dmp
memory/2564-28-0x00000000001F0000-0x0000000000624000-memory.dmp
memory/2564-29-0x0000000000730000-0x00000000007F4000-memory.dmp
memory/2564-62-0x0000000004240000-0x0000000004242000-memory.dmp
memory/2564-30-0x0000000000730000-0x00000000007F4000-memory.dmp
memory/2564-26-0x00000000001F0000-0x0000000000624000-memory.dmp
memory/2564-64-0x00000000001F0000-0x0000000000623000-memory.dmp
memory/2564-65-0x0000000000730000-0x00000000007F4000-memory.dmp
memory/3428-5-0x0000000002F00000-0x0000000002F16000-memory.dmp
memory/4300-1-0x0000000000B10000-0x0000000000C10000-memory.dmp
memory/4300-2-0x0000000000AC0000-0x0000000000AC9000-memory.dmp
memory/4448-19-0x0000000000920000-0x000000000092D000-memory.dmp
memory/4448-25-0x00000000022D0000-0x0000000002336000-memory.dmp
memory/4448-18-0x00000000022D0000-0x0000000002336000-memory.dmp
memory/4448-16-0x0000000000010000-0x000000000006D000-memory.dmp
memory/4448-24-0x0000000002830000-0x000000000283C000-memory.dmp
memory/4448-21-0x00000000022D0000-0x0000000002336000-memory.dmp
memory/4448-34-0x00000000022D0000-0x0000000002336000-memory.dmp
memory/4448-35-0x0000000002820000-0x0000000002821000-memory.dmp
memory/4448-20-0x0000000076ED4000-0x0000000076ED5000-memory.dmp
memory/4448-23-0x0000000002800000-0x0000000002801000-memory.dmp
memory/5020-41-0x0000000000FF0000-0x0000000001586000-memory.dmp
memory/5020-48-0x0000000000FF0000-0x0000000001586000-memory.dmp