vidar | 6fec179c363190199c1dcdf822be4d6b1f5c4895ebc7148a8fc9fa9512eeade8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 06:37

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General

Target

ktyihkdfesf.exe
Size

144KB
MD5

cc36e2a5a3c64941a79c31ca320e9797
SHA1

50c8f5db809cfec84735c9f4dcd6b55d53dfd9f5
SHA256

6fec179c363190199c1dcdf822be4d6b1f5c4895ebc7148a8fc9fa9512eeade8
SHA512

fcea6d62dc047e40182dc4ff1e0522ca935f9aeefdb1517957977bc5d9ac654285a973261401f3b98abf1f6ed62638b9e31306fd7aaeb67214ca42dfc2888af0
SSDEEP

3072:lOBRrLUOPed9xOi756fJnhsRSK2C22/m4ESZo3XRYzXIkQfyXzdEpx:A/rLVPW0nsP2Xy+TJfWzW7

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Signatures

Detect Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/664-0-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7
behavioral2/memory/664-7-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar family
vidar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	ktyihkdfesf.exe

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
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 3 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	ktyihkdfesf.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ktyihkdfesf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ktyihkdfesf.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3948	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
664	ktyihkdfesf.exe
664	ktyihkdfesf.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 664 wrote to memory of 5004	664	ktyihkdfesf.exe	84
PID 664 wrote to memory of 5004	664	ktyihkdfesf.exe	84
PID 664 wrote to memory of 5004	664	ktyihkdfesf.exe	84
PID 5004 wrote to memory of 3948	5004	cmd.exe	86
PID 5004 wrote to memory of 3948	5004	cmd.exe	86
PID 5004 wrote to memory of 3948	5004	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\ktyihkdfesf.exe
"C:\Users\Admin\AppData\Local\Temp\ktyihkdfesf.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ktyihkdfesf.exe" & rd /s /q "C:\ProgramData\1DTJW47QQ9RQ" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 10
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3948

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/664-0-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download
memory/664-7-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download