Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
20/09/2023, 14:19
General
- Target file.exe
- Size 207KB
- Sample230920-rmtywsgg4w
- SHA256 8407e4bb6ffb05e1631bc7c1cc2165bb3ceef41e20586b9ca16baa65896c04ab
Malware Config
Extracted
-
smokeloader
-
pub4
Extracted
-
smokeloader
-
2022
-
http://gudintas.at/tmp/
-
http://pik96.ru/tmp/
-
http://rosatiauto.com/tmp/
-
http://kingpirate.ru/tmp/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 1 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: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 2 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\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Roaming\fshbfcsC:\Users\Admin\AppData\Roaming\fshbfcs1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
fshbfcs
fshbfcs
memory/1836-0-0x0000000000790000-0x00000000007A5000-memory.dmp
memory/1836-1-0x00000000007B0000-0x00000000007B9000-memory.dmp
memory/1836-2-0x0000000000400000-0x00000000004E4000-memory.dmp
memory/1836-4-0x0000000000400000-0x00000000004E4000-memory.dmp
memory/1836-7-0x0000000000790000-0x00000000007A5000-memory.dmp
memory/1836-8-0x00000000007B0000-0x00000000007B9000-memory.dmp
memory/2636-3-0x0000000003530000-0x0000000003546000-memory.dmp
memory/2636-15-0x00000000089A0000-0x00000000089B6000-memory.dmp
memory/3132-14-0x0000000000400000-0x00000000004E4000-memory.dmp
memory/3132-18-0x0000000000400000-0x00000000004E4000-memory.dmp