Analysis
- max time kernel
300s - max time network
179s - platform
windows10-1703_x64 - resource
win10-20230915-en - resource tags
- submitted
21/09/2023, 04:26
General
- Target a59fd2f2d1845da759e3a7a3feeedc1d1c4fdc4b068b03edfdd0d97dcd3c0fe8.exe
- Size 208KB
- Sample230921-e21nrsfb46
- SHA256 a59fd2f2d1845da759e3a7a3feeedc1d1c4fdc4b068b03edfdd0d97dcd3c0fe8
Malware Config
Extracted
-
smokeloader
-
pub1
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.
- Deletes itself 1 IoCs
- 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
- Suspicious use of AdjustPrivilegeToken 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\a59fd2f2d1845da759e3a7a3feeedc1d1c4fdc4b068b03edfdd0d97dcd3c0fe8.exe"C:\Users\Admin\AppData\Local\Temp\a59fd2f2d1845da759e3a7a3feeedc1d1c4fdc4b068b03edfdd0d97dcd3c0fe8.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Roaming\rvfesigC:\Users\Admin\AppData\Roaming\rvfesig1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
rvfesig
rvfesig
memory/2772-0-0x00000000006A0000-0x00000000006B5000-memory.dmp
memory/2772-1-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/2772-2-0x0000000000400000-0x0000000000547000-memory.dmp
memory/2772-4-0x0000000000400000-0x0000000000547000-memory.dmp
memory/2772-7-0x00000000006A0000-0x00000000006B5000-memory.dmp
memory/3136-3-0x00000000013F0000-0x0000000001406000-memory.dmp
memory/3136-14-0x0000000003430000-0x0000000003446000-memory.dmp
memory/3964-13-0x0000000000400000-0x0000000000547000-memory.dmp
memory/3964-15-0x0000000000400000-0x0000000000547000-memory.dmp