vidar | de0508dc59523293fd16b194ed4f60124d1664ea8e6c329a6c1ba2d66aa6ad89

General

Target

file.exe
Size

404KB
MD5

931db1103751e5384c11f5aa6c1e0418
SHA1

01fc054c4132630bca2329b893a14cd2b812bc9f
SHA256

de0508dc59523293fd16b194ed4f60124d1664ea8e6c329a6c1ba2d66aa6ad89
SHA512

288e1e93c4448e49fb34d9d4af13d08edddb680d4f93ea0e75c4084e09f9736b6213c7b2b1b5ecf255abfcd83def910ba8538560c500d5dd26b7d3c03777540b
SSDEEP

6144:v6EaI0sylcnZP4jeTu1yZ2M0e2r/nvc11dbcTBL0v2oDA4e6imXOCVcIOsveUNXt:v66DZwpnr/vctOFoCm+CeIOsGKXEO

Score

10^/10

vidar 0a6eb69ecac8780e90fe30762716c187 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

0a6eb69ecac8780e90fe30762716c187

C2

https://t.me/jamsemlg

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/3940-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-27-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-28-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-46-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3940-47-0x0000000000400000-0x0000000000676000-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 2932 set thread context of 3940	2932	file.exe	88

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
3940	RegAsm.exe
3940	RegAsm.exe
3940	RegAsm.exe
3940	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88
PID 2932 wrote to memory of 3940	2932	file.exe	88

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:2932
- 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:3940

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/2932-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/2932-1-0x0000000000730000-0x000000000079A000-memory.dmp

Filesize
424KB

Download
memory/2932-11-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/2932-29-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3940-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-27-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-28-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-31-0x0000000022370000-0x00000000225CF000-memory.dmp

Filesize
2.4MB

Download
memory/3940-46-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3940-47-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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