vidar | 2af29a5f99c8ab0654dbece76b2e046f66703a4ae8b4ffa9b4071f9aa74523d7

Resubmissions

10-10-2024 02:19

241010-crx4sazhnm 10

Analysis

max time kernel
74s
max time network
134s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
10-10-2024 02:19

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General

Target

Samples - 10-09-2024/4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe
Size

283KB
MD5

257eb69581fd80827932ed434d32470f
SHA1

ef7f9f0b82f45fc93ca503f4eadd8e423bc94887
SHA256

4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd
SHA512

2eb0f6cc296748dc15925881a6e8a5895be4639095cb2996e740512caba44022c8a3ef39c821f1ad048de2c2eb7b10a9e673a9e0f1667e0e64640ec31a1ee1e0
SSDEEP

6144:tQs0+jmxNThrvyoRUp4B1Pw3A0FWAtMql3EBdA9bPCp0uUfStm5zXT4htP6VYdWe:M+jOFxvVQ4rPw3A+WAtr3EPknfS9PKS3

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/afsgsdgqr4r

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral16/memory/2308-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral16/memory/2308-9-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral16/memory/2308-7-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral16/memory/2308-28-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral16/memory/2308-29-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 4660 set thread context of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81

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 4 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	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2572	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2308	RegAsm.exe
2308	RegAsm.exe
2308	RegAsm.exe
2308	RegAsm.exe
2308	RegAsm.exe
2308	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 4660 wrote to memory of 2308	4660	4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe	81
PID 2308 wrote to memory of 5060	2308	RegAsm.exe	83
PID 2308 wrote to memory of 5060	2308	RegAsm.exe	83
PID 2308 wrote to memory of 5060	2308	RegAsm.exe	83
PID 5060 wrote to memory of 2572	5060	cmd.exe	85
PID 5060 wrote to memory of 2572	5060	cmd.exe	85
PID 5060 wrote to memory of 2572	5060	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe
"C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\4a16685ec6d408bafc872fac39012bb670ff7bba818a7af9f7dd411a383869dd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4660
- 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
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\BFBAAFHDHCBG" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5060
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2308-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2308-9-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2308-7-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2308-28-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2308-29-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4660-0-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/4660-1-0x0000000000520000-0x000000000056A000-memory.dmp

Filesize
296KB

Download
memory/4660-13-0x0000000074440000-0x0000000074BF1000-memory.dmp

Filesize
7.7MB

Download
memory/4660-23-0x0000000074440000-0x0000000074BF1000-memory.dmp

Filesize
7.7MB

Download