vidar | 434f2dc20a710077ba861c9a118223c51f04662d6edcb492812c6468e4cede48

General

Target

file.exe
Size

283KB
MD5

0d2bcf6e8f35ef48b85b997e23fbec5f
SHA1

3d1bac7342eff07e1f5682e7ad591f0be2eff9d4
SHA256

434f2dc20a710077ba861c9a118223c51f04662d6edcb492812c6468e4cede48
SHA512

3be9df19930613b864daa5f903dafddad3e758fe4cf8863b69b7b43a7b3222601800543b7c8d0ef8063a3e01af702a1bd04f04edb391091314f10d5f98861350
SSDEEP

6144:AA0VuptENYAdPF3ghtSgrFk0ynrSmOoFiY8+bXU9eNqgzdsq7JEO:HaupqNYAdd30cgafO0FigEO

Score

10^/10

vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

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 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/512-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/512-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/512-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/512-24-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/512-25-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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 4968 set thread context of 512	4968	file.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4848	512	WerFault.exe	84

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
512	RegAsm.exe
512	RegAsm.exe
512	RegAsm.exe
512	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 1456	4968	file.exe	83
PID 4968 wrote to memory of 1456	4968	file.exe	83
PID 4968 wrote to memory of 1456	4968	file.exe	83
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84
PID 4968 wrote to memory of 512	4968	file.exe	84

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:4968
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1456
- 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:512
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 2196
    3⤵
    - Program crash
    PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 512 -ip 512
1⤵
PID:4748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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

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Downloads

memory/512-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/512-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/512-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/512-24-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/512-25-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4968-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

Filesize
4KB

Download
memory/4968-1-0x0000000000210000-0x000000000025A000-memory.dmp

Filesize
296KB

Download
memory/4968-2-0x0000000005100000-0x00000000056A4000-memory.dmp

Filesize
5.6MB

Download
memory/4968-6-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download

Analysis

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