vidar | 3a82cb00938ffbdf09c91c39120f57054df7573950701ce8be86aec0342bc1b5

General

Target

file.exe
Size

403KB
MD5

1992187cfdd036a0eecb8f5ca9340cc0
SHA1

0aac664d9c06f47a970f88389401a14705337121
SHA256

3a82cb00938ffbdf09c91c39120f57054df7573950701ce8be86aec0342bc1b5
SHA512

37651fc773621566790569ec76af4a7e66f50472a7be6ba11575592514e0d11f4ff8cc1c83c5d3ebcde3c15ef942becbb8e71f763398fd5ffaa74c78a0379b92
SSDEEP

12288:9TF2nYPwGYGzePmnWkMkBR0pwvxT613EO:9TF2YPwGleYMkBRVZ6Rt

Score

10^/10

vidar 4b74261d834413e886f920a1e9dc5b33 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

4b74261d834413e886f920a1e9dc5b33

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 13 IoCs

stealer

resource	yara_rule
behavioral2/memory/876-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-21-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-22-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-38-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-39-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-55-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-56-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-80-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-81-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-88-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/876-89-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Loads dropped DLL 2 IoCs

pid	Process
876	RegAsm.exe
876	RegAsm.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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 4888 set thread context of 876	4888	file.exe	84

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	file.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 6 IoCs

pid	Process
876	RegAsm.exe
876	RegAsm.exe
876	RegAsm.exe
876	RegAsm.exe
876	RegAsm.exe
876	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
876	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 1240	4888	file.exe	83
PID 4888 wrote to memory of 1240	4888	file.exe	83
PID 4888 wrote to memory of 1240	4888	file.exe	83
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84
PID 4888 wrote to memory of 876	4888	file.exe	84

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1240
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:876

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

4

T1552

Credentials In Files

4

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\HCAEGCBFHJ.exe

Filesize
124KB

MD5
3038dc7c3cba2e002551e183861cbef7

SHA1
ecc140d87803cc501e3837abebd4fc8c899ca36a

SHA256
445f167c984295c48492877b05a3c2bad3c2398c00278f1804839ac33aa472bb

SHA512
c5f09820e617b720d7ed08ec1f9170556917cec51c5d236120bfd470de33b6907a3d8b5f42e5313ac6d34d162a259335091e0db9aec031d27a45f4d18243370e

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/876-38-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-55-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-89-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-88-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-21-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-22-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-23-0x00000000224F0000-0x000000002274F000-memory.dmp

Filesize
2.4MB

Download
memory/876-81-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-39-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-56-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/876-80-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4888-0-0x0000000074C0E000-0x0000000074C0F000-memory.dmp

Filesize
4KB

Download
memory/4888-20-0x0000000074C00000-0x00000000753B0000-memory.dmp

Filesize
7.7MB

Download
memory/4888-11-0x0000000074C00000-0x00000000753B0000-memory.dmp

Filesize
7.7MB

Download
memory/4888-1-0x0000000000770000-0x00000000007D8000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads