vidar | 4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd

General

Target

4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe
Size

283KB
MD5

257eb69581fd80827932ed434d32470f
SHA1

ef7f9f0b82f45fc93ca503f4eadd8e423bc94887
SHA256

4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd
SHA512

2eb0f6cc296748dc15925881a6e8a5895be4639095cb2996e740512caba44022c8a3ef39c821f1ad048de2c2eb7b10a9e673a9e0f1667e0e64640ec31a1ee1e0
SSDEEP

6144:tQs0+jmxNThrvyoRUp4B1Pw3A0FWAtMql3EBdA9bPCp0uUfStm5zXT4htP6VYdWe:M+jOFxvVQ4rPw3A+WAtr3EPknfS9PKS3

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/afsgsdgqr4r

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 8 IoCs

stealer

resource	yara_rule
behavioral2/memory/4144-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-7-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-25-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-26-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-43-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4144-44-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1740-45-0x00000000749F0000-0x00000000751A1000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file
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 1740 set thread context of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4144	RegAsm.exe
4144	RegAsm.exe
4144	RegAsm.exe
4144	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 4512	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	83
PID 1740 wrote to memory of 4512	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	83
PID 1740 wrote to memory of 4512	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	83
PID 1740 wrote to memory of 584	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	84
PID 1740 wrote to memory of 584	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	84
PID 1740 wrote to memory of 584	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	84
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85
PID 1740 wrote to memory of 4144	1740	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	85

C:\Users\Admin\AppData\Local\Temp\4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe
"C:\Users\Admin\AppData\Local\Temp\4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:584
- 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:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

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/1740-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x00000000006B0000-0x00000000006FA000-memory.dmp

Filesize
296KB

Download
memory/1740-13-0x00000000749F0000-0x00000000751A1000-memory.dmp

Filesize
7.7MB

Download
memory/1740-45-0x00000000749F0000-0x00000000751A1000-memory.dmp

Filesize
7.7MB

Download
memory/4144-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-7-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-25-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-26-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-28-0x0000000020300000-0x000000002055F000-memory.dmp

Filesize
2.4MB

Download
memory/4144-43-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4144-44-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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