vidar | 38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa

General

Target

38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe
Size

551KB
MD5

ea498476e2b5c2f16d1d4156366f2c0a
SHA1

3b32fd255292eeabc5360c0ec8b7e88d0b1c46e3
SHA256

38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa
SHA512

81cc501b9a7aeed02acf86f511371d6518a643e0c4f5ae49494fedfd29671947513b682f8602c5c0ed69f9cb368944471cd09fe7d7609c5593359d81a3560176
SSDEEP

12288:IKzXYJTVv8jNUQlvn/2S5caurW11dSbGQRSjnZFRK0N2egsP:IsCVtuQ+1zRKY/J

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/3744-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-26-0x0000000000400000-0x0000000000676000-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 3912 set thread context of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1588	3912	WerFault.exe	83

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	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3744	MSBuild.exe
3744	MSBuild.exe
3744	MSBuild.exe
3744	MSBuild.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 1060	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	84
PID 3912 wrote to memory of 1060	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	84
PID 3912 wrote to memory of 1060	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	84
PID 3912 wrote to memory of 3020	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	85
PID 3912 wrote to memory of 3020	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	85
PID 3912 wrote to memory of 3020	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	85
PID 3912 wrote to memory of 1448	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	86
PID 3912 wrote to memory of 1448	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	86
PID 3912 wrote to memory of 1448	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	86
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87
PID 3912 wrote to memory of 3744	3912	38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe	87

C:\Users\Admin\AppData\Local\Temp\38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe
"C:\Users\Admin\AppData\Local\Temp\38b12248eb12eb0105d3ea03ac1a0aab17563757ddc16ce7d9bc6dbd4833f1fa.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:1060
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:3020
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:1448
- 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:3744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3912 -s 288
  2⤵
  - Program crash
  PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3912 -ip 3912
1⤵
PID:2032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3744-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-10-0x000000001FAE0000-0x000000001FD3F000-memory.dmp

Filesize
2.4MB

Download
memory/3744-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3744-26-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3912-0-0x0000000000B08000-0x0000000000B0A000-memory.dmp

Filesize
8KB

Download

Analysis

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