Analysis
- max time kernel
133s - max time network
244s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 01:36
General
- Target c4c7045103f42bea7bc9afb11433e4f49d767be0d0b28b678a824e5627804b89.exe
- Size 3.6MB
- Sample240607-b1hvsafd5z
- SHA256 c4c7045103f42bea7bc9afb11433e4f49d767be0d0b28b678a824e5627804b89
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
-
https://steamcommunity.com/profiles/76561199698764354
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 2 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c4c7045103f42bea7bc9afb11433e4f49d767be0d0b28b678a824e5627804b89.exe"C:\Users\Admin\AppData\Local\Temp\c4c7045103f42bea7bc9afb11433e4f49d767be0d0b28b678a824e5627804b89.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- 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 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\JDAKJJDBGCAK" & exit3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
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-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/2880-67-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2880-69-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4684-50-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-54-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-4-0x0000000005720000-0x000000000580E000-memory.dmp
memory/4684-5-0x0000000005810000-0x00000000058DC000-memory.dmp
memory/4684-6-0x0000000005540000-0x000000000555C000-memory.dmp
memory/4684-8-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-18-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-66-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-64-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-2-0x0000000005630000-0x00000000056CC000-memory.dmp
memory/4684-1-0x0000000000A00000-0x0000000000D96000-memory.dmp
memory/4684-73-0x0000000073CA0000-0x000000007438E000-memory.dmp
memory/4684-62-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-60-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-58-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-56-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-48-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-52-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-3-0x0000000073CA0000-0x000000007438E000-memory.dmp
memory/4684-0-0x0000000073CAE000-0x0000000073CAF000-memory.dmp
memory/4684-38-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-44-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-42-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-46-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-36-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-34-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-32-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-30-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-28-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-26-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-24-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-22-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-20-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-16-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-14-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-12-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-10-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-41-0x0000000005540000-0x0000000005555000-memory.dmp
memory/4684-7-0x0000000005540000-0x0000000005555000-memory.dmp