vidar | 3d9855fcc2f225022896fb91724692a925354adee0985c94e18db195fa7c08e1

General

Target

file.exe
Size

283KB
MD5

e2cd52e91edffa873b4e1630684ea6c6
SHA1

dcbb5971ecb7353062ed294f6d867da2bb179975
SHA256

3d9855fcc2f225022896fb91724692a925354adee0985c94e18db195fa7c08e1
SHA512

e59f885e6424860e6d0cfebc8e712f1929cbc029e63f49c22c3623af268c2c537089779cf06a1b91d355aac8c6c21aaf66db0044031d09d1fc88d0196fbfe7f6
SSDEEP

6144:tFOUZ4uCh3Nc+8iakTqQ7G1fN6bSBvFIIv1vxklTXfRI4EBIGZ5EO:SUSuCj8iHjiNGkFfxxW64EBIGZ5EO

Score

10^/10

vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/3348-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/3348-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/3348-9-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/3348-24-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/3348-25-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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
T1552.001
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2340 set thread context of 3348	2340	file.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1452	3348	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3348	RegAsm.exe
3348	RegAsm.exe
3348	RegAsm.exe
3348	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83
PID 2340 wrote to memory of 3348	2340	file.exe	83

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3348
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3348 -s 2312
    3⤵
    - Program crash
    PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3348 -ip 3348
1⤵
PID:4600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2340-0-0x00000000752FE000-0x00000000752FF000-memory.dmp

Filesize
4KB

Download
memory/2340-1-0x00000000000D0000-0x000000000011A000-memory.dmp

Filesize
296KB

Download
memory/2340-2-0x0000000004FB0000-0x0000000005554000-memory.dmp

Filesize
5.6MB

Download
memory/2340-12-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/2340-27-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3348-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3348-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3348-9-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3348-24-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3348-25-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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