vidar | 18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794

General

Target

18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe
Size

551KB
MD5

066daf6c46293a0c6cf03655d3cb784f
SHA1

9f69ac84534befbc184c4afd6cd1b8c4bf3fef9e
SHA256

18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794
SHA512

63d4150c48f4b4e75a06f1ca2ed82f497982d2ead890d16f8da33406c633523bdd04cf2fddadc7a3f4c4be1df0f7fcee0eb3826ecf2afb4f25f96aa3b19e07e2
SSDEEP

12288:eSD3oZTCvnjD4fae6HNMvUaRuJLddkYKpx7WFUCCsP:eECcn4fZ6tMvZRaddkGFUCX

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/2000-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2000-12-0x0000000000400000-0x0000000000676000-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 1336 set thread context of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4272	1336	WerFault.exe	81
2208	2000	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	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.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
2000	MSBuild.exe
2000	MSBuild.exe
2000	MSBuild.exe
2000	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82
PID 1336 wrote to memory of 2000	1336	18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe	82

C:\Users\Admin\AppData\Local\Temp\18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe
"C:\Users\Admin\AppData\Local\Temp\18e8556789ba12cac2e51b4b4f8540b5f2ec254b40eae0eb7b63e64457187794.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1336
- 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:2000
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2000 -s 1424
    3⤵
    - Program crash
    PID:2208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 252
  2⤵
  - Program crash
  PID:4272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1336 -ip 1336
1⤵
PID:3300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2000 -ip 2000
1⤵
PID:2300

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

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Downloads

memory/1336-0-0x0000000000588000-0x000000000058A000-memory.dmp

Filesize
8KB

Download
memory/2000-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2000-12-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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