vidar | 75353832f53e2cb6fa45f6480ef70fa5ef8a37c5797baa4aacc65e37bf4087b9

General

Target
5ba436bd86396d1a7f4dfb45745ea9ed.exe
Size 661KB
Sample210426-mt84yd4pge
SHA256 75353832f53e2cb6fa45f6480ef70fa5ef8a37c5797baa4aacc65e37bf4087b9
MD5 5ba436bd86396d1a7f4dfb45745ea9ed
SHA1 c746be6e854f869e0dd652017dbd6db32d1aed1e
SHA512 33ba0be0a88022276355a09e76452a8874e035204ef3620fa857c6821703844e2ffaa6d14ece828ca920810b1fc4e8e324c49faf572ea28a983d21a0256f1849
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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	5ba436bd86396d1a7f4dfb45745ea9ed.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5ba436bd86396d1a7f4dfb45745ea9ed.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1204	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
788	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe
800	5ba436bd86396d1a7f4dfb45745ea9ed.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	788	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 3460	800	5ba436bd86396d1a7f4dfb45745ea9ed.exe	77
PID 800 wrote to memory of 3460	800	5ba436bd86396d1a7f4dfb45745ea9ed.exe	77
PID 800 wrote to memory of 3460	800	5ba436bd86396d1a7f4dfb45745ea9ed.exe	77
PID 3460 wrote to memory of 788	3460	cmd.exe	79
PID 3460 wrote to memory of 788	3460	cmd.exe	79
PID 3460 wrote to memory of 788	3460	cmd.exe	79
PID 3460 wrote to memory of 1204	3460	cmd.exe	80
PID 3460 wrote to memory of 1204	3460	cmd.exe	80
PID 3460 wrote to memory of 1204	3460	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\5ba436bd86396d1a7f4dfb45745ea9ed.exe
"C:\Users\Admin\AppData\Local\Temp\5ba436bd86396d1a7f4dfb45745ea9ed.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 5ba436bd86396d1a7f4dfb45745ea9ed.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5ba436bd86396d1a7f4dfb45745ea9ed.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3460
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 5ba436bd86396d1a7f4dfb45745ea9ed.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:788
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

4

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/800-114-0x0000000002490000-0x0000000002525000-memory.dmp

Download

memory/800-115-0x0000000000400000-0x000000000089B000-memory.dmp