vidar | a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b

General

Target

a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe
Size

571KB
MD5

8351aa212d7278c381ebe13f2a435ad9
SHA1

d529652f0ba92febad36c66a1b5be4398eddaef2
SHA256

a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b
SHA512

8ac16c1c659da3562a1b6c7b6a8999da49420d0860e18f601ce6ae737113c82b074b1a724db3b807b41da04f0fbbdfdecb8d42856f72cb0a1732a4dfbfbc2e47
SSDEEP

12288:fls0xfgBSzcsLJPVB1DrYoLRn/4CAkJwh9Jb6OYDU3zHCf4S:fHfgeDPMoLRwCAY06S39

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

C2

http://lade.petperfectcare.com:80

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/2388-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-18-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2388-19-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 852 set thread context of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82

Program crash 1 IoCs

pid	pid_target	Process	procid_target
968	852	WerFault.exe	81

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	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.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
2388	MSBuild.exe
2388	MSBuild.exe
2388	MSBuild.exe
2388	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82
PID 852 wrote to memory of 2388	852	a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe	82

C:\Users\Admin\AppData\Local\Temp\a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe
"C:\Users\Admin\AppData\Local\Temp\a86c7b65a6348d392d10d3982b6d0b896fdf646b218903a012d3c0dd73159f5b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:852
- 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:2388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 252
  2⤵
  - Program crash
  PID:968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 852 -ip 852
1⤵
PID:4012

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/852-0-0x0000000000F2D000-0x0000000000F2F000-memory.dmp

Filesize
8KB

Download
memory/2388-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-10-0x0000000020050000-0x00000000202AF000-memory.dmp

Filesize
2.4MB

Download
memory/2388-18-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2388-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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