vidar | b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9

General

Target

b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe
Size

403KB
MD5

a2fc88996b2fe412ad287321f6a18591
SHA1

33c3242867eebe62da8b8ba946ebf986918c48b4
SHA256

b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9
SHA512

74504dc96abb1a6c9ff0f22ab0e0f5dd087f2721678657fc895375ab3cfa5e4f81e818504d23423197b2e0fc44163340ea2420386cb64fb6b59b9e2d456628ea
SSDEEP

12288:PGeJadV8HxUS6590r5H0pC9aB9/07UBlEO:PGeJoV8RZ6sVHd9aB9/Blt

Score

10^/10

vidar d80be45a1eb6454ca916f92c36ebf67d discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

d80be45a1eb6454ca916f92c36ebf67d

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 8 IoCs

stealer

resource	yara_rule
behavioral2/memory/3364-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-21-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-30-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3364-31-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4116-32-0x0000000073A70000-0x000000007415E000-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 4116 set thread context of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72

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	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.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
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe
3364	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72
PID 4116 wrote to memory of 3364	4116	b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe	72

C:\Users\Admin\AppData\Local\Temp\b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe
"C:\Users\Admin\AppData\Local\Temp\b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4116
- 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:3364

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

Query Registry

2

T1012

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/3364-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-21-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-23-0x000000001FCA0000-0x000000001FEFF000-memory.dmp

Filesize
2.4MB

Download
memory/3364-30-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3364-31-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4116-0-0x0000000073A7E000-0x0000000073A7F000-memory.dmp

Filesize
4KB

Download
memory/4116-1-0x00000000001F0000-0x0000000000258000-memory.dmp

Filesize
416KB

Download
memory/4116-11-0x0000000073A70000-0x000000007415E000-memory.dmp

Filesize
6.9MB

Download
memory/4116-32-0x0000000073A70000-0x000000007415E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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