vidar | 41ee1357282ed8722ff127ac17ff0831a92a54e72c32a560abeae0d27f5c090e

General

Target

file.exe
Size

396KB
MD5

cc94be13bc24599e326d03ca246a61fa
SHA1

73ed54a021153213ee4823683e4a9376b479d939
SHA256

41ee1357282ed8722ff127ac17ff0831a92a54e72c32a560abeae0d27f5c090e
SHA512

b2da25e014462b410d8a68dfd09c0159772271b7f706c95ab2ef517060dd5305a02b49ac021a80d9c21624c8c02bdde9b62be9dcbace2308802edcc3a336b125
SSDEEP

6144:bXqwxGuBem9P3ofEPGc8V8vkl4vn6QdG9eB4RyWTkui4ZR6d0psZ8EZ:bXqGGTvNUw435B4pZR6d0psaEZ

Score

10^/10

vidar 433cd71b7a2bdd3668a493b00ee95630 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

433cd71b7a2bdd3668a493b00ee95630

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 15 IoCs

stealer

resource	yara_rule
behavioral2/memory/2136-10-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-18-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-15-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-23-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-30-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-31-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-47-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-48-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-64-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-65-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-72-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-88-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-89-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-96-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7
behavioral2/memory/2136-97-0x0000000000700000-0x0000000000976000-memory.dmp	family_vidar_v7

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

Loads dropped DLL 3 IoCs

pid	Process
1084	file.exe
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1084 set thread context of 2136	1084	file.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	aspnet_regiis.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.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	aspnet_regiis.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	aspnet_regiis.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe
2136	aspnet_regiis.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2136	aspnet_regiis.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86
PID 1084 wrote to memory of 2136	1084	file.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

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

C:\ProgramData\FHIDAFHCBA.exe

Filesize
13B

MD5
aee9784c03b80d38d3271cde2b252b8d

SHA1
e5fd9aa24c9417e7332e6f25936ae2a6ec8f1524

SHA256
27c2ccd962c2b8dccb52fe3688ab236f186f7a41fd57d810478712048e9ad3f8

SHA512
a83c2f678a77228f5c7f2fb61a723217892b8422913739d1c65cb97701c341361eeee617e9d050a86b552db4dd87b18cfb94443977a75a5862171346609e9472

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
C:\Users\Admin\AppData\Roaming\msvcp110.dll

Filesize
584KB

MD5
54b8f43259c486d87dbb9b4b4a71014b

SHA1
373351ecc936b3f9dbb2c858cd0342ca7af807e8

SHA256
6cf354d8c07b353870741c6c53f467743e214b4d170e92316d566b555268a44b

SHA512
9460135d568807652689189cf3fe8c8b641c0e3b7582f6f9dc35eefc36b82312fcdc9c08f841024717f62f23160b2cdb6ac3b1eb3188029656a7913114d354c2

Download Submit
memory/1084-21-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/1084-1-0x0000000000B90000-0x0000000000BFA000-memory.dmp

Filesize
424KB

Download
memory/1084-2-0x0000000002F90000-0x0000000002F96000-memory.dmp

Filesize
24KB

Download
memory/1084-8-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/1084-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/1084-22-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/2136-31-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-65-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-23-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-33-0x0000000021F30000-0x000000002218F000-memory.dmp

Filesize
2.4MB

Download
memory/2136-47-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-48-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-64-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-30-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-72-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-15-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-18-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-88-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-89-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-96-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-97-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download
memory/2136-10-0x0000000000700000-0x0000000000976000-memory.dmp

Filesize
2.5MB

Download

Analysis

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