vidar | f35bc946ea6919fa86ef778e39ee36e8b6c2c4e335cd82394ed9a29211779ce8

General

Target
a67a88165c2a332821c6224f22ffde7e.exe
Size 606KB
Sample210923-cwvt8aecc3
SHA256 f35bc946ea6919fa86ef778e39ee36e8b6c2c4e335cd82394ed9a29211779ce8
MD5 a67a88165c2a332821c6224f22ffde7e
SHA1 87778ca2b92ce1c72eaaf9728c5367b17412967b
SHA512 7e9879d2982567dd7b44531e95100858ed678c3bcca61cc4001355c01d715b5b7d20a01e4a75c8b0a257ea68c757c7d495bb9e6734df5f7d169709368143a748
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2492-116-0x0000000000400000-0x000000000051E000-memory.dmp	family_vidar
behavioral2/memory/2492-115-0x00000000021C0000-0x0000000002294000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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). Likely ransomware behaviour.

System Information Discovery
T1082

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	a67a88165c2a332821c6224f22ffde7e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a67a88165c2a332821c6224f22ffde7e.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
440	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4092	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe
2492	a67a88165c2a332821c6224f22ffde7e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 3568	2492	a67a88165c2a332821c6224f22ffde7e.exe	70
PID 2492 wrote to memory of 3568	2492	a67a88165c2a332821c6224f22ffde7e.exe	70
PID 2492 wrote to memory of 3568	2492	a67a88165c2a332821c6224f22ffde7e.exe	70
PID 3568 wrote to memory of 4092	3568	cmd.exe	72
PID 3568 wrote to memory of 4092	3568	cmd.exe	72
PID 3568 wrote to memory of 4092	3568	cmd.exe	72
PID 3568 wrote to memory of 440	3568	cmd.exe	74
PID 3568 wrote to memory of 440	3568	cmd.exe	74
PID 3568 wrote to memory of 440	3568	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\a67a88165c2a332821c6224f22ffde7e.exe
"C:\Users\Admin\AppData\Local\Temp\a67a88165c2a332821c6224f22ffde7e.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im a67a88165c2a332821c6224f22ffde7e.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a67a88165c2a332821c6224f22ffde7e.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3568
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im a67a88165c2a332821c6224f22ffde7e.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4092
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2492-116-0x0000000000400000-0x000000000051E000-memory.dmp

Download

memory/2492-115-0x00000000021C0000-0x0000000002294000-memory.dmp