Analysis
- max time kernel
300s - max time network
300s - platform
windows10-1703_x64 - resource
win10-20231215-en - resource tags
- submitted
01/01/2024, 04:48
General
- Target 1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c.exe
- Size 190KB
- Sample240101-fe7n8sedh7
- SHA256 1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c
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 5 IoCs
- Loads dropped DLL 2 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- NSIS installer 4 IoCs
- Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 21 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\1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c.exe"C:\Users\Admin\AppData\Local\Temp\1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c.exe"C:\Users\Admin\AppData\Local\Temp\1154fd60a90314fa04892992d5c7a13a40992f68444a403bac9fbb9c78e42d7c.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
-
C:\Users\Admin\AppData\Local\Temp\C6F.exeC:\Users\Admin\AppData\Local\Temp\C6F.exe1⤵
- Executes dropped EXE
-
C:\Users\Admin\AppData\Local\Temp\1672.exeC:\Users\Admin\AppData\Local\Temp\1672.exe1⤵
- 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:\Users\Admin\AppData\Roaming\sfjbeeeC:\Users\Admin\AppData\Roaming\sfjbeee1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\sfjbeeeC:\Users\Admin\AppData\Roaming\sfjbeee2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
1672.exe
1672.exe
C6F.exe
WindowsUpdater.exe
sfjbeee
lib.dll
System.dll
memory/196-26-0x0000000000330000-0x00000000008C6000-memory.dmp
memory/196-22-0x0000000000330000-0x00000000008C6000-memory.dmp
memory/1316-45-0x0000000000C20000-0x0000000000D20000-memory.dmp
memory/2920-39-0x00000000732B0000-0x00000000739C7000-memory.dmp
memory/2920-38-0x00000000732B0000-0x00000000739C7000-memory.dmp
memory/3280-5-0x0000000001280000-0x0000000001296000-memory.dmp
memory/3280-46-0x0000000001330000-0x0000000001346000-memory.dmp
memory/3588-6-0x0000000000400000-0x0000000000409000-memory.dmp
memory/3588-4-0x0000000000400000-0x0000000000409000-memory.dmp
memory/3588-3-0x0000000000400000-0x0000000000409000-memory.dmp
memory/4400-49-0x0000000000400000-0x0000000000409000-memory.dmp
memory/4452-1-0x00000000009F0000-0x0000000000AF0000-memory.dmp
memory/4452-2-0x00000000001F0000-0x00000000001F9000-memory.dmp