Analysis
- max time kernel
140s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
16/10/2023, 12:34
General
- Target file.exe
- Size 262KB
- Sample231016-prrcfsge48
- SHA256 1cb2be135d4640a7c1aab8b881e54fc44fc9fb3c9ea0489bbebac04533b0fb4b
Malware Config
Extracted
-
stealc
-
http://elijahdiego.top
-
url_path
/e9c345fc99a4e67e.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Loads dropped DLL 2 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
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 25362⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 4116 -ip 41161⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
mozglue.dll
nss3.dll
memory/4116-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4116-52-0x0000000000B60000-0x0000000000C60000-memory.dmp
memory/4116-53-0x0000000000960000-0x000000000097B000-memory.dmp
memory/4116-63-0x0000000000400000-0x00000000007CC000-memory.dmp
memory/4116-45-0x0000000000400000-0x00000000007CC000-memory.dmp
memory/4116-1-0x0000000000B60000-0x0000000000C60000-memory.dmp
memory/4116-3-0x0000000000400000-0x00000000007CC000-memory.dmp
memory/4116-2-0x0000000000960000-0x000000000097B000-memory.dmp
memory/4116-87-0x0000000000400000-0x00000000007CC000-memory.dmp