vidar | b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a

General

Target

b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe
Size

401KB
MD5

80a0a1a9bcd5080ade393da387e7cebb
SHA1

e438014fd4f850e7b30b64b5dd90e359d1d3d37e
SHA256

b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a
SHA512

876c211b8a4b8601d441a93790a8ab913318dcc94c3a04ac80d2c4332146fe61d1b73cf0bc585d7985e0524d77627a031bdf24600412e327b431acd5934a3dff
SSDEEP

6144:qWHt7Zr0aVuMEy+HvEDDy7j0746dhDuWlIjDAj3bbmbwcVaIw3aysuInON3B88D+:n67V7jjwhD8DArbwwcOaPlnONFUEcF

Score

10^/10

vidar 250b9a73c7975e8d5fe6b982585fb708 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

250b9a73c7975e8d5fe6b982585fb708

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/4300-5-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-8-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-10-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-20-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-21-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-37-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/4300-38-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file
Reads user/profile data of web browsers 2 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
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 3168 set thread context of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86

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	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.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
4300	RegAsm.exe
4300	RegAsm.exe
4300	RegAsm.exe
4300	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 1956	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	84
PID 3168 wrote to memory of 1956	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	84
PID 3168 wrote to memory of 1956	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	84
PID 3168 wrote to memory of 1416	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	85
PID 3168 wrote to memory of 1416	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	85
PID 3168 wrote to memory of 1416	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	85
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86
PID 3168 wrote to memory of 4300	3168	b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe	86

C:\Users\Admin\AppData\Local\Temp\b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe
"C:\Users\Admin\AppData\Local\Temp\b7d6e79c9645903f60b065e235692000dbe819fb936973149db30de10cf3356a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1956
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1416
- 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:4300

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

Loading Replay Monitor...

Downloads

memory/3168-13-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-1-0x0000000000780000-0x00000000007E8000-memory.dmp

Filesize
416KB

Download
memory/3168-2-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-4-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-0-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/4300-5-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-8-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-10-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-20-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-21-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-22-0x0000000022660000-0x00000000228BF000-memory.dmp

Filesize
2.4MB

Download
memory/4300-37-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4300-38-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing