vidar | 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c

General

Target

41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe
Size

292KB
MD5

0c4b826cab211945649ac4bbb0c48c6b
SHA1

fe0132f85b63833f55a41651fcc0f32c1c96124d
SHA256

41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c
SHA512

6e4ea6a514002c61cadfea41ae6aa9e81178570dbae5f78b79e95f654dc6c7716a8f98b812c805ad45423f0e657fab260492e46b2e6bb45d25520d933dc27363
SSDEEP

6144:D8zag1zxFKmMqtXpA8dI41MwJckA3/l6ah4LXeofOdLBhShSpk+JEO:OjNxjXrX1z1845DdfCLBxZEO

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 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/4716-11-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-9-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-25-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-26-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-42-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4716-43-0x0000000000400000-0x0000000000657000-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 4176 set thread context of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.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	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.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
4716	RegAsm.exe
4716	RegAsm.exe
4716	RegAsm.exe
4716	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85
PID 4176 wrote to memory of 4716	4176	41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe	85

C:\Users\Admin\AppData\Local\Temp\41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe
"C:\Users\Admin\AppData\Local\Temp\41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4176
- 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:4716

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/4176-0-0x00000000752BE000-0x00000000752BF000-memory.dmp

Filesize
4KB

Download
memory/4176-1-0x0000000000E80000-0x0000000000ECA000-memory.dmp

Filesize
296KB

Download
memory/4176-2-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4176-6-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4176-7-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4716-11-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-9-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-25-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-26-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-27-0x0000000022190000-0x00000000223EF000-memory.dmp

Filesize
2.4MB

Download
memory/4716-42-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4716-43-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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