vidar | 2af29a5f99c8ab0654dbece76b2e046f66703a4ae8b4ffa9b4071f9aa74523d7

Resubmissions

10-10-2024 02:19

241010-crx4sazhnm 10

Analysis

max time kernel
114s
max time network
150s
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 - 10-09-2024/4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe
Size

283KB
MD5

84354d3c9965d9a0878596e347a34f39
SHA1

f8e6d9f00d72f6f023e8d793462b7bb90cc31583
SHA256

4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39
SHA512

2356ba4867985b609e1727f2a4877649f6c1b415d089dcef22c695baa42d3051cb6fb799eb7056ca75301a1aba47e71354e5051868f5bda04a62932a3ef72ad3
SSDEEP

6144:S6JmCTAAGH0Jd9KZxnLlIak8/nPIO02s9F8oBNvAd9GzKeXOvEO:7mCTAAkY905yagO0D0OAH4KNEO

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/fneogr

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
behavioral23/memory/2856-5-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral23/memory/2856-6-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral23/memory/2856-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral23/memory/2856-27-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral23/memory/2856-28-0x0000000000400000-0x0000000000657000-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 224 set thread context of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82

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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1944	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2856	RegAsm.exe
2856	RegAsm.exe
2856	RegAsm.exe
2856	RegAsm.exe
2856	RegAsm.exe
2856	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 4224	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	81
PID 224 wrote to memory of 4224	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	81
PID 224 wrote to memory of 4224	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	81
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 224 wrote to memory of 2856	224	4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe	82
PID 2856 wrote to memory of 1520	2856	RegAsm.exe	84
PID 2856 wrote to memory of 1520	2856	RegAsm.exe	84
PID 2856 wrote to memory of 1520	2856	RegAsm.exe	84
PID 1520 wrote to memory of 1944	1520	cmd.exe	86
PID 1520 wrote to memory of 1944	1520	cmd.exe	86
PID 1520 wrote to memory of 1944	1520	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe
"C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4224
- 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:2856
- - 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\FHIIEHJKKECG" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1520
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1944

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

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Downloads

memory/224-0-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/224-1-0x0000000000A70000-0x0000000000ABA000-memory.dmp

Filesize
296KB

Download
memory/224-11-0x0000000074560000-0x0000000074D11000-memory.dmp

Filesize
7.7MB

Download
memory/2856-5-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2856-6-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2856-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2856-27-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2856-28-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download