Analysis
- max time kernel
27s - max time network
136s - platform
windows7_x64 - resource
win7-20231215-en - resource tags
- submitted
26/12/2023, 09:11
General
- Target 5c5d345bb44d5efcf46818d3ec00f69e.exe
- Size 298KB
- Sample231226-k5llxaeffp
- SHA256 95a88bacdc3b5524ee43abd4c37c729b69f4b2bf439d61cecedf54fb1f0df94e
Malware Config
Extracted
-
stealc
-
http://5.42.66.58
-
url_path
/3886d2276f6914c4.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.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5c5d345bb44d5efcf46818d3ec00f69e.exe"C:\Users\Admin\AppData\Local\Temp\5c5d345bb44d5efcf46818d3ec00f69e.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5c5d345bb44d5efcf46818d3ec00f69e.exe" & del "C:\ProgramData\*.dll"" & exit2⤵
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C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
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-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/2344-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2344-2-0x0000000000220000-0x000000000023C000-memory.dmp
memory/2344-36-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-3-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-1-0x00000000007A0000-0x00000000008A0000-memory.dmp
memory/2344-66-0x0000000000220000-0x000000000023C000-memory.dmp
memory/2344-65-0x00000000007A0000-0x00000000008A0000-memory.dmp
memory/2344-64-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-74-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-77-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-78-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2344-79-0x00000000007A0000-0x00000000008A0000-memory.dmp