vidar | efdb5e9fdd74b02096b66c5fa2a68de20af19f069f1f18d4cad5ddd06c0776b3

General

Target
b93543cd68fd2179f29e0563f19b3480.exe
Size 610KB
Sample210423-2e5tnas8ea
SHA256 efdb5e9fdd74b02096b66c5fa2a68de20af19f069f1f18d4cad5ddd06c0776b3
MD5 b93543cd68fd2179f29e0563f19b3480
SHA1 0fb06db1ccff7c80160591ffed3517f198b2d3d0
SHA512 0ea256a44a3e7cd62e8fea5070b001688f69cedb346c15996e7352459e5621ae6ae9bf53996ff52081842c63d0edd409258875ad91cb9eb2e339f55c30554806
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
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.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	b93543cd68fd2179f29e0563f19b3480.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b93543cd68fd2179f29e0563f19b3480.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
8	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3636	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe
3924	b93543cd68fd2179f29e0563f19b3480.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 4092	3924	b93543cd68fd2179f29e0563f19b3480.exe	78
PID 3924 wrote to memory of 4092	3924	b93543cd68fd2179f29e0563f19b3480.exe	78
PID 3924 wrote to memory of 4092	3924	b93543cd68fd2179f29e0563f19b3480.exe	78
PID 4092 wrote to memory of 3636	4092	cmd.exe	80
PID 4092 wrote to memory of 3636	4092	cmd.exe	80
PID 4092 wrote to memory of 3636	4092	cmd.exe	80
PID 4092 wrote to memory of 8	4092	cmd.exe	81
PID 4092 wrote to memory of 8	4092	cmd.exe	81
PID 4092 wrote to memory of 8	4092	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\b93543cd68fd2179f29e0563f19b3480.exe
"C:\Users\Admin\AppData\Local\Temp\b93543cd68fd2179f29e0563f19b3480.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im b93543cd68fd2179f29e0563f19b3480.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\b93543cd68fd2179f29e0563f19b3480.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4092
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im b93543cd68fd2179f29e0563f19b3480.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3636
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:8

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/3924-114-0x0000000000710000-0x00000000007A5000-memory.dmp

Download

memory/3924-115-0x0000000000400000-0x00000000004C6000-memory.dmp