Analysis
- max time kernel
117s - max time network
120s - platform
windows7_x64 - resource
win7-20231023-en - resource tags
- submitted
07/11/2023, 22:29
General
- Target SecuriteInfo.com.Win32.PWSX-gen.30262.29900.exe
- Size 256KB
- Sample231107-2d749sbb32
- SHA256 7b9e3a1daae553787702cc7245c8aa6d569cbf97a054e6e7a1248c071eb9d7d4
Malware Config
Extracted
-
stealc
-
http://raymonddixon.icu
-
url_path
/3886d2276f6914c4.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Deletes itself 1 IoCs
- 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.30262.29900.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.30262.29900.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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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\SecuriteInfo.com.Win32.PWSX-gen.30262.29900.exe" & del "C:\ProgramData\*.dll"" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/2764-1-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/2764-2-0x0000000000230000-0x000000000024B000-memory.dmp
memory/2764-3-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2764-4-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/2764-5-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2764-6-0x0000000000230000-0x000000000024B000-memory.dmp
memory/2764-8-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2764-45-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2764-72-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2764-73-0x0000000000900000-0x0000000000A00000-memory.dmp