vidar | 2af29a5f99c8ab0654dbece76b2e046f66703a4ae8b4ffa9b4071f9aa74523d7

Resubmissions

10-10-2024 02:19

241010-crx4sazhnm 10

Analysis

max time kernel
74s
max time network
141s
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 - 10-09-2024/44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe
Size

282KB
MD5

f31d21c664ded57509d1e2e1e2c73098
SHA1

58abbe186f2324eca451d3866b63ceeb924d3391
SHA256

44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b
SHA512

5aff27d9ffb0568072f52e51679bbd9cb3c063d7bb1c3fe658c10241b633a66738d6bd7ee2111e065a1b93098bdaa1e5da6b9b8d063fe3f1ff1de7d71d32aa53
SSDEEP

6144:GsbHGb3gHx2vdWxR5TjWfEvi3v+QwzmGEO:iPvoxR5WfEveSKGEO

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

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

Processes:

resource	yara_rule
behavioral3/memory/2044-6-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/2044-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/2044-7-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/2044-27-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral3/memory/2044-28-0x0000000000400000-0x0000000000657000-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

Processes:

44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe

description	pid	process	target process
PID 3500 set thread context of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe

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

Processes:

44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exeRegAsm.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.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

Processes:

RegAsm.exe

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

Processes:

timeout.exe

pid process

2448 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegAsm.exe

pid process

2044 RegAsm.exe
2044 RegAsm.exe
2044 RegAsm.exe
2044 RegAsm.exe
2044 RegAsm.exe
2044 RegAsm.exe

pid	process
2448	timeout.exe

pid	process
2044	RegAsm.exe
2044	RegAsm.exe
2044	RegAsm.exe
2044	RegAsm.exe
2044	RegAsm.exe
2044	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exeRegAsm.execmd.exe

description	pid	process	target process
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 3500 wrote to memory of 2044	3500	44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe	RegAsm.exe
PID 2044 wrote to memory of 848	2044	RegAsm.exe	cmd.exe
PID 2044 wrote to memory of 848	2044	RegAsm.exe	cmd.exe
PID 2044 wrote to memory of 848	2044	RegAsm.exe	cmd.exe
PID 848 wrote to memory of 2448	848	cmd.exe	timeout.exe
PID 848 wrote to memory of 2448	848	cmd.exe	timeout.exe
PID 848 wrote to memory of 2448	848	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe
"C:\Users\Admin\AppData\Local\Temp\Samples - 10-09-2024\44d0e959d4a9c31cc02dc12dacdf34b4fa4d0d9eda5a4c6d03dfff72045cda8b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3500
- 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:2044
- - 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\FHIDAFHCBAKF" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:848
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2448

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/2044-6-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2044-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2044-7-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2044-27-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2044-28-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3500-0-0x000000007459E000-0x000000007459F000-memory.dmp

Filesize
4KB

Download
memory/3500-1-0x0000000000F30000-0x0000000000F7A000-memory.dmp

Filesize
296KB

Download
memory/3500-13-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/3500-29-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download