vidar | f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d

General

Target

f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe
Size

403KB
MD5

2cce29d734ea1d227b338834698e2de4
SHA1

41700cd1bcf5f5bcca81ce722ed47fc17bd030c2
SHA256

f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d
SHA512

ea0b440113a225764b38ae2526a10f7e4f3081e4a353e9831cf0e846ac7ba97ea7c2b4a12ab6fac5708a7855da8967f1b6bc661757dc68d819d11887a6af20b5
SSDEEP

6144:O+0dGgr04h1LBuTmcYz43wUDPNvms5PYYzX3oYbEU6DsV4+1/QSyiZEO:30d/h1LBK13wUjx5QYTo0EUBVSS/EO

Score

10^/10

vidar e90840a846d017e7b095f7543cdf2d15 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

e90840a846d017e7b095f7543cdf2d15

C2

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/1912-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-21-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-33-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/1912-34-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4988 set thread context of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 4600	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	73
PID 4988 wrote to memory of 4600	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	73
PID 4988 wrote to memory of 4600	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	73
PID 4988 wrote to memory of 2132	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	74
PID 4988 wrote to memory of 2132	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	74
PID 4988 wrote to memory of 2132	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	74
PID 4988 wrote to memory of 848	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	75
PID 4988 wrote to memory of 848	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	75
PID 4988 wrote to memory of 848	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	75
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76
PID 4988 wrote to memory of 1912	4988	f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe	76

C:\Users\Admin\AppData\Local\Temp\f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe
"C:\Users\Admin\AppData\Local\Temp\f75acf936390f89239c43552717efb65c4c3190b16a7eec62dcd0053a045e91d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4600
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2132
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

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

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1912-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-21-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-22-0x000000001FEB0000-0x000000002010F000-memory.dmp

Filesize
2.4MB

Download
memory/1912-33-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/1912-34-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4988-0-0x0000000073A7E000-0x0000000073A7F000-memory.dmp

Filesize
4KB

Download
memory/4988-1-0x00000000004C0000-0x0000000000528000-memory.dmp

Filesize
416KB

Download
memory/4988-11-0x0000000073A70000-0x000000007415E000-memory.dmp

Filesize
6.9MB

Download
memory/4988-35-0x0000000073A70000-0x000000007415E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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