Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
04/10/2023, 16:19
General
- Target file.exe
- Size 218KB
- Sample231004-tshh6ada2s
- SHA256 cc58ad1f7a097f077f06b78e21c1f5a01007cd98613b602bb22b95751920ba80
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
- Suspicious use of UnmapMainImage 1 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\tvsrtcwC:\Users\Admin\AppData\Roaming\tvsrtcw1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tvsrtcw
tvsrtcw
memory/3212-18-0x00000000028D0000-0x00000000028E6000-memory.dmp
memory/3212-5-0x00000000021A0000-0x00000000021B6000-memory.dmp
memory/4240-19-0x0000000000400000-0x00000000005AE000-memory.dmp
memory/4240-17-0x0000000000400000-0x00000000005AE000-memory.dmp
memory/4240-16-0x0000000000700000-0x0000000000800000-memory.dmp
memory/4512-4-0x0000000000400000-0x00000000005AE000-memory.dmp
memory/4512-6-0x0000000000400000-0x00000000005AE000-memory.dmp
memory/4512-9-0x0000000000680000-0x0000000000689000-memory.dmp
memory/4512-1-0x00000000006E0000-0x00000000007E0000-memory.dmp
memory/4512-3-0x0000000000400000-0x00000000005AE000-memory.dmp
memory/4512-2-0x0000000000680000-0x0000000000689000-memory.dmp