vidar | c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479

General

Target

file.exe
Size

411KB
MD5

9bcf6be0b4b8eff680b0d8539237a496
SHA1

d4f023de60407bbf80512a76339b14ef01060439
SHA256

c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479
SHA512

f0b3a552a6482135cc3b9d8872b93201bfc11f89d544aa29779dfd6a45a6e60d05316b3d0550e989bbe7ed2819d0e59e31fa71976f08ea0a681e0d2626a1b48d
SSDEEP

6144:PVDE42g2K7jOz5rVp+9Mphcr4vP9UXVFwzwbnaTDW+QSOBiQglLEO:JE5g37u5rVLhvUFKz+CDWV5uEO

Score

10^/10

vidar dea7c01007a657ba0c601c941632f140 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

dea7c01007a657ba0c601c941632f140

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/1640-4-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-8-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-10-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-20-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-21-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-37-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/1640-38-0x0000000000400000-0x0000000000675000-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 3464 set thread context of 1640	3464	file.exe	82

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	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
1640	RegAsm.exe
1640	RegAsm.exe
1640	RegAsm.exe
1640	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82
PID 3464 wrote to memory of 1640	3464	file.exe	82

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:3464
- 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:1640

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/1640-10-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-4-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-8-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-20-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-21-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-22-0x0000000022180000-0x00000000223DF000-memory.dmp

Filesize
2.4MB

Download
memory/1640-37-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/1640-38-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3464-1-0x0000000000490000-0x00000000004F8000-memory.dmp

Filesize
416KB

Download
memory/3464-2-0x00000000751D0000-0x0000000075980000-memory.dmp

Filesize
7.7MB

Download
memory/3464-6-0x00000000751D0000-0x0000000075980000-memory.dmp

Filesize
7.7MB

Download
memory/3464-0-0x00000000751DE000-0x00000000751DF000-memory.dmp

Filesize
4KB

Download
memory/3464-13-0x00000000751D0000-0x0000000075980000-memory.dmp

Filesize
7.7MB

Download

Analysis

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