vidar | d2f6e8331b8a820cb3dfa24f4f092ae19d3c7b9bfcc2467e5ef2fce91caf2e01

General

Target
29373722203339a49712d52e9f354ed2.exe
Size 717KB
Sample211004-tfnjmsgfa6
SHA256 d2f6e8331b8a820cb3dfa24f4f092ae19d3c7b9bfcc2467e5ef2fce91caf2e01
MD5 29373722203339a49712d52e9f354ed2
SHA1 d4cd3d018f3cdcf4beecd3466d66fd74f01a37b9
SHA512 9407980f7c71cac2aa2301f370532314d3cfe963d7ee39cd0e21287cef447764deeb5377856d9a06a2d09bd423b25d9e846585fbd634a991d8544996d972d95e
MD5 SHA1 SHA512

Score

10^/10

vidar 1008 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

41.1

Botnet

1008

C2

https://mas.to/@bardak1ho

Attributes

profile_id
1008

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/3704-116-0x0000000000400000-0x00000000004D7000-memory.dmp	family_vidar
behavioral2/memory/3704-115-0x0000000000740000-0x0000000000814000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.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	29373722203339a49712d52e9f354ed2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	29373722203339a49712d52e9f354ed2.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4368	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2592	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe
3704	29373722203339a49712d52e9f354ed2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2592	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3704 wrote to memory of 4080	3704	29373722203339a49712d52e9f354ed2.exe	70
PID 3704 wrote to memory of 4080	3704	29373722203339a49712d52e9f354ed2.exe	70
PID 3704 wrote to memory of 4080	3704	29373722203339a49712d52e9f354ed2.exe	70
PID 4080 wrote to memory of 2592	4080	cmd.exe	72
PID 4080 wrote to memory of 2592	4080	cmd.exe	72
PID 4080 wrote to memory of 2592	4080	cmd.exe	72
PID 4080 wrote to memory of 4368	4080	cmd.exe	74
PID 4080 wrote to memory of 4368	4080	cmd.exe	74
PID 4080 wrote to memory of 4368	4080	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\29373722203339a49712d52e9f354ed2.exe
"C:\Users\Admin\AppData\Local\Temp\29373722203339a49712d52e9f354ed2.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 29373722203339a49712d52e9f354ed2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\29373722203339a49712d52e9f354ed2.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4080
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 29373722203339a49712d52e9f354ed2.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2592
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:4368

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/3704-116-0x0000000000400000-0x00000000004D7000-memory.dmp

Download

memory/3704-115-0x0000000000740000-0x0000000000814000-memory.dmp