vidar | 798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30

General

Target

vrgeh.exe
Size

283KB
MD5

a8fef7b198fa122ead5bcf5b84f2737b
SHA1

00ac0d1d6354ba397ea4d69265ed227817a29d8f
SHA256

798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30
SHA512

acf483ef4846e1bff039c615eca505547e3739c979a6ecf08bda31869d69c3b71dcbdab045ac28bfcd5bd8bc92201fd5841b54c48ccb39986b712a99f8ef7d3b
SSDEEP

6144:/aYRRx/KV1vo9X/FLI/tiDS/MqmPJOUv5/iqfMvBO71BBEO:/9Lx/i1a/FL2tKeOJv5/iqEY7FEO

Score

10^/10

vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/fneogr

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
behavioral3/memory/1484-3-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/1484-7-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/1484-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/1484-22-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/1484-23-0x0000000000400000-0x0000000000657000-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 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 4840 set thread context of 1484	4840	vrgeh.exe	88

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3368	1484	WerFault.exe	88

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	vrgeh.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
1484	RegAsm.exe
1484	RegAsm.exe
1484	RegAsm.exe
1484	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88
PID 4840 wrote to memory of 1484	4840	vrgeh.exe	88

C:\Users\Admin\AppData\Local\Temp\vrgeh.exe
"C:\Users\Admin\AppData\Local\Temp\vrgeh.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840
- 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:1484
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1484 -s 1940
    3⤵
    - Program crash
    PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1484 -ip 1484
1⤵
PID:2528

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

Replay Monitor

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Downloads

memory/1484-3-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1484-7-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1484-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1484-22-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1484-23-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4840-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4840-1-0x0000000000440000-0x000000000048A000-memory.dmp

Filesize
296KB

Download
memory/4840-11-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4840-21-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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