vidar | eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af

General

Target

eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe
Size

413KB
MD5

7c8c40571618f1dedabedb3c3db944ec
SHA1

0a865ae5571e8a67a3b2c2729d16e3fb29f7eaad
SHA256

eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af
SHA512

0bd76c6a4c14e1337a8ea4d998654c6c13eefef59448778ce1af067fabc75c396319c42f0ad48963f569f34eab29d613568c46f19da4e14b21b7212cee167d9b
SSDEEP

6144:1o+rmiWT18bBlKQbsFnb2nF3cP6YHTIr3VlEK0AECzou47zrbJaTbn15dnBdEO:17miWTEaycnbWFMPpHTIrwXCKOLN3EO

Score

10^/10

vidar 58cd250b15e666e5f72fcf5caa6cb131 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

58cd250b15e666e5f72fcf5caa6cb131

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/2452-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-22-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-23-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-39-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2452-40-0x0000000000400000-0x0000000000676000-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 1716 set thread context of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73

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	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.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
2452	RegAsm.exe
2452	RegAsm.exe
2452	RegAsm.exe
2452	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73
PID 1716 wrote to memory of 2452	1716	eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe	73

C:\Users\Admin\AppData\Local\Temp\eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe
"C:\Users\Admin\AppData\Local\Temp\eb780802634337a4e99e99b4307144533f6113eb58ee6e86338437f1e52d95af.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- 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:2452

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/1716-13-0x0000000073290000-0x000000007397E000-memory.dmp

Filesize
6.9MB

Download
memory/1716-1-0x0000000000470000-0x00000000004D8000-memory.dmp

Filesize
416KB

Download
memory/1716-2-0x0000000073290000-0x000000007397E000-memory.dmp

Filesize
6.9MB

Download
memory/1716-0-0x000000007329E000-0x000000007329F000-memory.dmp

Filesize
4KB

Download
memory/1716-12-0x0000000073290000-0x000000007397E000-memory.dmp

Filesize
6.9MB

Download
memory/2452-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-22-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-23-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-24-0x0000000020360000-0x00000000205BF000-memory.dmp

Filesize
2.4MB

Download
memory/2452-39-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2452-40-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing