vidar | 390d7472201e8ea9bdc6c7fa2b4ab1f6faca02071f1f997037cc5f52759a9cb6

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

17 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	ioc
17	ip-api.com

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

전산 및 비전산자료 보존 요.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	전산 및 비전산자료 보존 요.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	전산 및 비전산자료 보존 요.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1156 taskkill.exe

pid	process
1156	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

전산 및 비전산자료 보존 요.exe

pid	process
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe
4780	전산 및 비전산자료 보존 요.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

전산 및 비전산자료 보존 요.execmd.exe

description	pid	process	target process
PID 4780 wrote to memory of 352	4780	전산 및 비전산자료 보존 요.exe	cmd.exe
PID 4780 wrote to memory of 352	4780	전산 및 비전산자료 보존 요.exe	cmd.exe
PID 4780 wrote to memory of 352	4780	전산 및 비전산자료 보존 요.exe	cmd.exe
PID 352 wrote to memory of 1156	352	cmd.exe	taskkill.exe
PID 352 wrote to memory of 1156	352	cmd.exe	taskkill.exe
PID 352 wrote to memory of 1156	352	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\___ _ _____ __ ___\전산 및 비전산자료 보존 요청서\전산 및 비전산자료 보존 요.exe
"C:\Users\Admin\AppData\Local\Temp\___ _ _____ __ ___\전산 및 비전산자료 보존 요청서\전산 및 비전산자료 보존 요.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4780

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im ?? ? ????? ?? ?.exe /f & erase C:\Users\Admin\AppData\Local\Temp\___ _ _____ __ ___\?? ? ????? ?? ???\?? ? ????? ?? ?.exe & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:352

C:\Windows\SysWOW64\taskkill.exe
taskkill /im ?? ? ????? ?? ?.exe /f
3⤵
- Kills process with taskkill
PID:1156

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/352-2-0x0000000000000000-mapping.dmp

Download
memory/1156-3-0x0000000000000000-mapping.dmp

Download
memory/4780-0-0x0000000000A49000-0x0000000000A4A000-memory.dmp

Filesize
4KB

Download
memory/4780-1-0x0000000002730000-0x0000000002731000-memory.dmp

Filesize
4KB

Download