vidar | 5aa5f829532b82d1d146841d843de9d3ab2278ba2c52402d51d18a5a2823872f

General

Target

file.exe
Size

411KB
MD5

d5251bd2a4d9ee464b1dbb25245a67a7
SHA1

a89c28d0c6f39475cf96c2129c4d10d73d0aa4b4
SHA256

5aa5f829532b82d1d146841d843de9d3ab2278ba2c52402d51d18a5a2823872f
SHA512

6a42887328eac8fc4036b08c01dd952ee7ee3640172e86cb4fd9654372ff8903ab8a616602e0f67f4192d63506bf92a6346b8ce3017eccbeab26c221e0451c4b
SSDEEP

12288:7FWiaocklk/TYrcwBXCqE3iclBZkmYaugcCkVkNao:BzCcrPyqE7BOmYo

Score

10^/10

vidar b74ef0d8ce56e494b0d83e1d5be9dbeb credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

b74ef0d8ce56e494b0d83e1d5be9dbeb

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 14 IoCs

stealer

resource	yara_rule
behavioral2/memory/4796-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-17-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-26-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-42-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-43-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-59-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-60-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-82-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-83-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-90-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-91-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-92-0x0000000000400000-0x0000000000676000-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
1204	file.exe
4796	aspnet_regiis.exe
4796	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 1204 set thread context of 4796	1204	file.exe	83

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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_regiis.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
4796	aspnet_regiis.exe
4796	aspnet_regiis.exe
4796	aspnet_regiis.exe
4796	aspnet_regiis.exe
4796	aspnet_regiis.exe
4796	aspnet_regiis.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4796	aspnet_regiis.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83
PID 1204 wrote to memory of 4796	1204	file.exe	83

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:1204
- 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:4796

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\AKJEGCFBGD.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
587KB

MD5
a7303605203c978abbefb4033275ff0c

SHA1
6779d8ceb4551f3dba684645ee2e794c3ade90b5

SHA256
0b1bb1e0d8bf15e28cc4528bf52153429b6318fd61b3733b6b8c86947820bff4

SHA512
1f1bed9df20f88ac34b118aedb3b13ff67656a982a5909072ad2c3aa5e946c3bc1968ea564004630e4dc7f8e642b14a433265160bcb2ee845608322c98575105

Download Submit
memory/1204-16-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/1204-8-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/1204-0-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/1204-1-0x00000000002E0000-0x000000000034A000-memory.dmp

Filesize
424KB

Download
memory/1204-2-0x0000000004D70000-0x0000000004D76000-memory.dmp

Filesize
24KB

Download
memory/1204-18-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/4796-59-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-28-0x00000000224F0000-0x000000002274F000-memory.dmp

Filesize
2.4MB

Download
memory/4796-42-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-43-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-60-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-26-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-82-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-83-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-90-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-91-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-92-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4796-17-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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