Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
16/01/2023, 04:13
General
- Target file.exe
- Size 210KB
- Sample230116-es3rrsha76
- SHA256 ba7571c10be3bf276f9ac556be34fb049b43f63d8558cb29bc9471e56319d7c1
Malware Config
Extracted
-
lumma
-
77.73.134.68
Signatures
- Detects Smokeloader packer 1 IoCs
- Lumma Stealer
An infostealer written in C++ first seen in August 2022.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- 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 3 IoCs
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\Local\Temp\DC08.exeC:\Users\Admin\AppData\Local\Temp\DC08.exe1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4176 -s 13082⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4176 -ip 41761⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
DC08.exe
DC08.exe
memory/4176-139-0x0000000002F29000-0x0000000002F43000-memory.dmp
memory/4176-140-0x0000000002CF0000-0x0000000002D1A000-memory.dmp
memory/4176-141-0x0000000000400000-0x0000000002BA6000-memory.dmp
memory/4176-142-0x0000000000400000-0x0000000002BA6000-memory.dmp
memory/4692-132-0x0000000002E39000-0x0000000002E49000-memory.dmp
memory/4692-133-0x0000000002C10000-0x0000000002C19000-memory.dmp
memory/4692-134-0x0000000000400000-0x0000000002B9D000-memory.dmp
memory/4692-135-0x0000000000400000-0x0000000002B9D000-memory.dmp