vidar | 4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3

General

Target

4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe
Size

580KB
MD5

d00bed1e7a48b201a48d8ed601af4fdc
SHA1

6998fc690e22c5ea2a77786d40b1648c1ca85d1a
SHA256

4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3
SHA512

b5162d2d4d65971e059c10ff22f3854e2f1dd5b0f3c020f9494a13d73a6638ff9a156910687fd6dd49d5c4baceddc07be54c004d2c3f41863b74ef67fdfa2925
SSDEEP

12288:wmCadY9nY8vFbXp9wuvWVJYjm9KoFBtmX16opWZtW+SgZfpEEudcdIiQEO:2asnYsGYOYjaHkYZtW+S7E5W3t

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

C2

http://proxy.johnmccrea.com/

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/4064-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-18-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4064-19-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4752	2452	WerFault.exe	82

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	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4064	MSBuild.exe
4064	MSBuild.exe
4064	MSBuild.exe
4064	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83
PID 2452 wrote to memory of 4064	2452	4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe	83

C:\Users\Admin\AppData\Local\Temp\4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe
"C:\Users\Admin\AppData\Local\Temp\4d168922bfe2c239bf23050c30d1430b66ae4cf4563d13ec6e8708b71d8cd7a3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 252
  2⤵
  - Program crash
  PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2452 -ip 2452
1⤵
PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2452-0-0x00000000008AC000-0x00000000008AE000-memory.dmp

Filesize
8KB

Download
memory/4064-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-10-0x000000001FEA0000-0x00000000200FF000-memory.dmp

Filesize
2.4MB

Download
memory/4064-18-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4064-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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