Analysis
- max time kernel
147s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
01/03/2023, 18:31
General
- Target 388c64fa17cc45c603347a1827c6654a.exe
- Size 192KB
- Sample230301-w525fahe82
- SHA256 dca66a3ef8ac260d22b74a2c0942492bce58c51a20528e58b2d26c0a4893b049
Malware Config
Extracted
-
smokeloader
-
2022
-
http://potunulit.org/
-
http://hutnilior.net/
-
http://bulimu55t.net/
-
http://soryytlic4.net/
-
http://novanosa5org.org/
-
http://nuljjjnuli.org/
-
http://tolilolihul.net/
-
http://somatoka51hub.net/
-
http://hujukui3.net/
-
http://bukubuka1.net/
-
http://golilopaster.org/
-
http://newzelannd66.org/
-
http://otriluyttn.org/
Signatures
- Detects Smokeloader packer 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 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 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 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\388c64fa17cc45c603347a1827c6654a.exe"C:\Users\Admin\AppData\Local\Temp\388c64fa17cc45c603347a1827c6654a.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\C1AF.exeC:\Users\Admin\AppData\Local\Temp\C1AF.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\telemetry\svcservice.exe"C:\Users\Admin\AppData\Roaming\telemetry\svcservice.exe"2⤵
- Executes dropped EXE
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 8762⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3268 -ip 32681⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
C1AF.exe
C1AF.exe
svcservice.exe
svcservice.exe
svcservice.exe
memory/692-135-0x0000000002E70000-0x0000000002E86000-memory.dmp
memory/3268-147-0x00000000006D0000-0x000000000070D000-memory.dmp
memory/3268-153-0x0000000000400000-0x0000000000574000-memory.dmp
memory/3268-158-0x0000000000400000-0x0000000000574000-memory.dmp
memory/4464-159-0x0000000000400000-0x0000000000574000-memory.dmp
memory/4464-160-0x0000000000400000-0x0000000000574000-memory.dmp
memory/5044-136-0x0000000000400000-0x0000000000574000-memory.dmp
memory/5044-134-0x0000000002170000-0x0000000002179000-memory.dmp