Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
02/10/2023, 10:17
General
- Target file.exe
- Size 234KB
- Sample231002-mbc4saaf33
- SHA256 d4b60a5225dd6edc3d0fc961e00cd88b9f8afe777655e1da1ad0435a0ce40be6
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.
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Modifies registry class 3 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 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:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/3136-3-0x0000000002DF0000-0x0000000002E06000-memory.dmp
memory/3672-45-0x00000268BB2B0000-0x00000268BB2B1000-memory.dmp
memory/3672-13-0x00000268B2E40000-0x00000268B2E50000-memory.dmp
memory/3672-29-0x00000268B2F40000-0x00000268B2F50000-memory.dmp
memory/3672-47-0x00000268BB2E0000-0x00000268BB2E1000-memory.dmp
memory/3672-48-0x00000268BB2E0000-0x00000268BB2E1000-memory.dmp
memory/3672-49-0x00000268BB3F0000-0x00000268BB3F1000-memory.dmp
memory/4144-2-0x0000000000400000-0x0000000002435000-memory.dmp
memory/4144-1-0x00000000025E0000-0x00000000025E9000-memory.dmp
memory/4144-4-0x0000000000400000-0x0000000002435000-memory.dmp
memory/4144-7-0x0000000004190000-0x00000000041A5000-memory.dmp
memory/4144-8-0x00000000025E0000-0x00000000025E9000-memory.dmp
memory/4144-0-0x0000000004190000-0x00000000041A5000-memory.dmp