vidar | 8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5

General

Target

8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe
Size

559KB
MD5

cc58463069fb1c5b47270fc6e4b41400
SHA1

1c5ac9d2ecb70e0fe5f32172de422b26bd243289
SHA256

8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5
SHA512

faa949c89049649a82d381aa65b370fe8d9557c175f6771c91c7658b3fa95dc5d1ebebe3751bc51d55f1f9b2e90bf7ce5b03fe22224e7934c3f5eadba55dda2e
SSDEEP

12288:JFdmQisJRpBNx7PAbhjIB6ZjNDumjkz9H5ijhIGx0ruSz2VPuEO:B7RTvzAF8B6FNDV2hEjhIG4uS0ut

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/3676-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3676-26-0x0000000000400000-0x0000000000676000-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 4184 set thread context of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3824	4184	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	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.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
3676	MSBuild.exe
3676	MSBuild.exe
3676	MSBuild.exe
3676	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82
PID 4184 wrote to memory of 3676	4184	8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe	82

C:\Users\Admin\AppData\Local\Temp\8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe
"C:\Users\Admin\AppData\Local\Temp\8bb86c8dcf1a9a4870e5f659b472f4826a05d8d6f7234658a8e8903c284ac4c5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4184
- 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:3676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4184 -s 288
  2⤵
  - Program crash
  PID:3824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4184 -ip 4184
1⤵
PID:2424

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/3676-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-10-0x000000001D810000-0x000000001DA6F000-memory.dmp

Filesize
2.4MB

Download
memory/3676-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3676-26-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4184-0-0x00000000009C8000-0x00000000009CA000-memory.dmp

Filesize
8KB

Download

Analysis

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