Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
12/06/2024, 03:46
General
- Target 2749a4e54c346168aa7311040752c157a5cafb50bedeaf1d915492546d00b570.exe
- Size 1.6MB
- Sample240612-eb2hdazfmf
- SHA256 2749a4e54c346168aa7311040752c157a5cafb50bedeaf1d915492546d00b570
Malware Config
Extracted
-
stealc
Extracted
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vidar
-
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 16 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- 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 WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2749a4e54c346168aa7311040752c157a5cafb50bedeaf1d915492546d00b570.exe"C:\Users\Admin\AppData\Local\Temp\2749a4e54c346168aa7311040752c157a5cafb50bedeaf1d915492546d00b570.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat44BA.tmpC:\Users\Admin\AppData\Local\Temp\kat44BA.tmp2⤵
- Executes dropped EXE
- 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:\Users\Admin\AppData\Local\Temp\kat44BA.tmp" & rd /s /q "C:\ProgramData\JJECGCBGDBKJ" & 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
Loading Replay Monitor...
Downloads
kat44BA.tmp
memory/844-9-0x0000000000400000-0x0000000000594000-memory.dmp
memory/844-2-0x0000000003FD0000-0x00000000040E0000-memory.dmp
memory/844-0-0x00000000022F0000-0x00000000022F1000-memory.dmp
memory/3488-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-20-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-21-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-24-0x000000001B830000-0x000000001BA8F000-memory.dmp
memory/3488-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-40-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-41-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-57-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-58-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-69-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-70-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-71-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3488-74-0x0000000000400000-0x0000000000648000-memory.dmp