Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
11/06/2024, 22:05
General
- Target 3bce80b6c6e7ccb7f21bd63f9b777078514d5118efa12376efc2142bc7ed13db.exe
- Size 1.6MB
- Sample240611-1zzjkstdje
- SHA256 3bce80b6c6e7ccb7f21bd63f9b777078514d5118efa12376efc2142bc7ed13db
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
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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 16 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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\3bce80b6c6e7ccb7f21bd63f9b777078514d5118efa12376efc2142bc7ed13db.exe"C:\Users\Admin\AppData\Local\Temp\3bce80b6c6e7ccb7f21bd63f9b777078514d5118efa12376efc2142bc7ed13db.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4CC8.tmpC:\Users\Admin\AppData\Local\Temp\kat4CC8.tmp2⤵
- Checks computer location settings
- 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\kat4CC8.tmp" & rd /s /q "C:\ProgramData\EGIJEBGDAFHI" & 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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-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kat4CC8.tmp
memory/228-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-48-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-65-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-62-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-12-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-61-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-14-0x0000000023B50000-0x0000000023DAF000-memory.dmp
memory/228-49-0x0000000000400000-0x0000000000648000-memory.dmp
memory/228-60-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1900-10-0x0000000000400000-0x0000000000594000-memory.dmp
memory/1900-2-0x0000000002960000-0x0000000002A70000-memory.dmp
memory/1900-0-0x0000000002200000-0x0000000002201000-memory.dmp