Analysis
- max time kernel
195s - max time network
255s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 00:08
General
- Target 6c04b7572d6d4a88438ce7ed6d125617d4806df08ad0eebc209ff66f6eb246a7.exe
- Size 3.6MB
- Sample240607-ae1ysseb3w
- SHA256 6c04b7572d6d4a88438ce7ed6d125617d4806df08ad0eebc209ff66f6eb246a7
Malware Config
Extracted
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stealc
Extracted
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vidar
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https://88.99.127.107
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https://t.me/r8z0l
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https://steamcommunity.com/profiles/76561199698764354
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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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\6c04b7572d6d4a88438ce7ed6d125617d4806df08ad0eebc209ff66f6eb246a7.exe"C:\Users\Admin\AppData\Local\Temp\6c04b7572d6d4a88438ce7ed6d125617d4806df08ad0eebc209ff66f6eb246a7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- 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⤵
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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 & rd /s /q "C:\ProgramData\KFHCAEGCBFHJ" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4772-71-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4772-68-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4800-52-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-60-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-4-0x0000000005A00000-0x0000000005B3A000-memory.dmp
memory/4800-5-0x0000000005820000-0x00000000058EE000-memory.dmp
memory/4800-6-0x00000000057E0000-0x00000000057FC000-memory.dmp
memory/4800-14-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-16-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-66-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-67-0x0000000073010000-0x00000000736FE000-memory.dmp
memory/4800-74-0x0000000073010000-0x00000000736FE000-memory.dmp
memory/4800-2-0x0000000005960000-0x00000000059FC000-memory.dmp
memory/4800-1-0x0000000000CA0000-0x0000000001044000-memory.dmp
memory/4800-64-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-62-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-50-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-58-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-56-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-54-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-3-0x0000000073010000-0x00000000736FE000-memory.dmp
memory/4800-0-0x000000007301E000-0x000000007301F000-memory.dmp
memory/4800-38-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-46-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-45-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-42-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-40-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-49-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-36-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-34-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-32-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-30-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-28-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-26-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-22-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-20-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-18-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-12-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-11-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-24-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-8-0x00000000057E0000-0x00000000057F5000-memory.dmp
memory/4800-7-0x00000000057E0000-0x00000000057F5000-memory.dmp