vidar | f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68

General

Target

f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe
Size

403KB
MD5

e0a861bd26bf65d25bb61f8ebbe81e50
SHA1

b06e237cde5ffb36b8a388c47b150b20784666fa
SHA256

f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68
SHA512

7753c4b21788a5bf1810f5f1dd7debee302f0fad9a383d4dc4f0aaa2e340988eef4676284631d9bd5338552b62714b80e33e626258e7d265248041ece75901de
SSDEEP

6144:wcKudp8ds++opu1J+TIYwuTUT8SJXdbar3LrEIssLgNLYglq/sD1ShTd1J3DAol+:ZTa9puuTSn8SPujLr31DcGDtm28EO

Score

10^/10

vidar 9bf5e431869643a2ac397d2dc0d687fb discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

9bf5e431869643a2ac397d2dc0d687fb

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/4588-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-21-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-37-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4588-38-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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 1644 set thread context of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72

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	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.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
4588	RegAsm.exe
4588	RegAsm.exe
4588	RegAsm.exe
4588	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72
PID 1644 wrote to memory of 4588	1644	f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe	72

C:\Users\Admin\AppData\Local\Temp\f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe
"C:\Users\Admin\AppData\Local\Temp\f083e21b36dd20620436ee2fa9a7f8f98dd7ca182ed5e1cd19d05455a0b4ab68.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1644
- 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:4588

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

Loading Replay Monitor...

Downloads

memory/1644-0-0x0000000073EAE000-0x0000000073EAF000-memory.dmp

Filesize
4KB

Download
memory/1644-1-0x00000000008C0000-0x0000000000928000-memory.dmp

Filesize
416KB

Download
memory/1644-11-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/1644-39-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/4588-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-21-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-22-0x0000000020030000-0x000000002028F000-memory.dmp

Filesize
2.4MB

Download
memory/4588-37-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4588-38-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing