vidar | 9c1173238ad24a2c0f1b36e424a3e9f94c41ab757c8897e4b57b9212fb8d4fd4

General

Target

file.exe
Size

293KB
MD5

b525b80d2056db699ed31d53b5955588
SHA1

6255e3315403e648658c4aa58296c4c63a998bc1
SHA256

9c1173238ad24a2c0f1b36e424a3e9f94c41ab757c8897e4b57b9212fb8d4fd4
SHA512

b174315e9f6f7ce26c8285aaa0a5ca3f2b3ae4545dfdd6cb6eff3a581ad811b502e6cb4249dcd270ba6bb8deaf31d3f656242332d4eb59a48075b23a03e16ff7
SSDEEP

6144:zrOMp+74wxjRj1EOeIG9hilRRAroUuZULldYKq9HEO:+T0Aj1z74iMrorKqJEO

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/fneogr

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 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/4460-3-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-6-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-12-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-13-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-31-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-32-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-48-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4460-49-0x0000000000400000-0x0000000000657000-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 5116 set thread context of 4460	5116	file.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	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
4460	RegAsm.exe
4460	RegAsm.exe
4460	RegAsm.exe
4460	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 1056	5116	file.exe	84
PID 5116 wrote to memory of 1056	5116	file.exe	84
PID 5116 wrote to memory of 1056	5116	file.exe	84
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85
PID 5116 wrote to memory of 4460	5116	file.exe	85

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:5116
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1056
- 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:4460

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/4460-12-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-32-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-3-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-6-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-49-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-48-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-13-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-31-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4460-17-0x0000000021FD0000-0x000000002222F000-memory.dmp

Filesize
2.4MB

Download
memory/5116-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

Filesize
4KB

Download
memory/5116-14-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/5116-1-0x0000000000F50000-0x0000000000F9A000-memory.dmp

Filesize
296KB

Download
memory/5116-9-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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