Analysis
- max time kernel
15s - max time network
116s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
07/01/2024, 04:18
General
- Target syncUpd.exe
- Size 304KB
- Sample240107-ewybfsfde9
- SHA256 2424d5739411b1a48bdca1869745c8d4811cd6aefe37cb7bf264765c5c5070cb
Malware Config
Extracted
-
stealc
-
http://185.172.128.79
-
url_path
/3886d2276f6914c4.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- 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.
- Program crash 1 IoCs
- 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 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\syncUpd.exe"C:\Users\Admin\AppData\Local\Temp\syncUpd.exe"1⤵
- 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\syncUpd.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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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1452 -s 23162⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1452 -ip 14521⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/1452-1-0x00000000007C0000-0x00000000008C0000-memory.dmp
memory/1452-3-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-2-0x0000000002370000-0x000000000238C000-memory.dmp
memory/1452-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1452-49-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-53-0x00000000007C0000-0x00000000008C0000-memory.dmp
memory/1452-54-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-78-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-85-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-98-0x0000000000400000-0x000000000062E000-memory.dmp
memory/1452-99-0x0000000000400000-0x000000000062E000-memory.dmp