vidar | b10d3a615a6fb0971d10d6e853977f6c4b80a2085732e8273b363c2efa21aa9f

General

Target

file.exe
Size

282KB
MD5

a34d7daa11a8fec34b5d435f2915b4e3
SHA1

4eb5f71cbe7f5c4a0cf45a024a73e722b559833b
SHA256

b10d3a615a6fb0971d10d6e853977f6c4b80a2085732e8273b363c2efa21aa9f
SHA512

048edabc8433df162e3590a210b1bbae97db0d3dd0f77ed55d74292e7f72e142462919412dfb8e849ae0fc48170795ba15c2cde99ee4709308e434ef2f370701
SSDEEP

6144:LnP22RU3G8V6uctgRgnllTLaHh95tjdB/sZe5rompXUDEO:jP25WLvtnllfaB9XxIe5rocXEEO

Score

10^/10

vidar credential_access 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 8 IoCs

stealer

resource	yara_rule
behavioral2/memory/748-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-27-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-28-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-44-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/748-45-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2824-46-0x0000000074990000-0x0000000075140000-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 2824 set thread context of 748	2824	file.exe	86

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	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
748	RegAsm.exe
748	RegAsm.exe
748	RegAsm.exe
748	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86
PID 2824 wrote to memory of 748	2824	file.exe	86

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:2824
- 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:748

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/748-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-27-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-28-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-29-0x0000000022970000-0x0000000022BCF000-memory.dmp

Filesize
2.4MB

Download
memory/748-44-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/748-45-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2824-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/2824-1-0x0000000000880000-0x00000000008CA000-memory.dmp

Filesize
296KB

Download
memory/2824-13-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/2824-46-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download

Analysis

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