vidar | ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c

General

Target

ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe
Size

282KB
MD5

c8a2d55c143d25ea7163ff04da854cd8
SHA1

186940c774dd3e08195d6bab46c2b0170300a36d
SHA256

ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c
SHA512

7923cb651ac9d620e084f26a4666214cc22530603e4a8de9243df8b9e8c3466dfefdab80401ae52c0be5235510e07a0c176a4eb0f1440b77e48a6f10fbbcd799
SSDEEP

6144:j1JhitNRsow2ECN3mxuJhe1gRjJ0WKBfTLia1bl9qRrEO:otTkFM3Ne1yyWKFLiSblwRrEO

Score

10^/10

vidar credential_access 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 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/1548-9-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-27-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-28-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-44-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1548-45-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 3376 set thread context of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81

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	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.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
1548	RegAsm.exe
1548	RegAsm.exe
1548	RegAsm.exe
1548	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81
PID 3376 wrote to memory of 1548	3376	ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe	81

C:\Users\Admin\AppData\Local\Temp\ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe
"C:\Users\Admin\AppData\Local\Temp\ac3999e4290648c6f63aee0e20e04be509b7c0aa74fb60f5e6dbcd083e3b7e4c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3376
- 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:1548

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/1548-9-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-27-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-28-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-29-0x0000000020090000-0x00000000202EF000-memory.dmp

Filesize
2.4MB

Download
memory/1548-44-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1548-45-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3376-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/3376-1-0x0000000000F50000-0x0000000000F9A000-memory.dmp

Filesize
296KB

Download
memory/3376-13-0x0000000074850000-0x0000000075001000-memory.dmp

Filesize
7.7MB

Download
memory/3376-46-0x0000000074850000-0x0000000075001000-memory.dmp

Filesize
7.7MB

Download

Analysis

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