vidar | 575ea0ea6808067f46ee7e5026fd5832997e28a9cef3cc1d6227ec5742ead3ba

General

Target
959727c05f54b7ccf3cb751ae7d781c8.exe
Size 633KB
Sample210507-kwbcvmx1ej
SHA256 575ea0ea6808067f46ee7e5026fd5832997e28a9cef3cc1d6227ec5742ead3ba
MD5 959727c05f54b7ccf3cb751ae7d781c8
SHA1 f3e8dd16886e12b8e667e6d8a11d59b7a2e169b8
SHA512 2b397cafd1e9f36def6aea02070808e8906609d088d0265c93be9fc9f18217e5689c19579508076f0971785a1dffb56233f93aa383561b4767d4a7a515d61204
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
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.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	959727c05f54b7ccf3cb751ae7d781c8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	959727c05f54b7ccf3cb751ae7d781c8.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1296	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2432	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe
860	959727c05f54b7ccf3cb751ae7d781c8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 1292	860	959727c05f54b7ccf3cb751ae7d781c8.exe	77
PID 860 wrote to memory of 1292	860	959727c05f54b7ccf3cb751ae7d781c8.exe	77
PID 860 wrote to memory of 1292	860	959727c05f54b7ccf3cb751ae7d781c8.exe	77
PID 1292 wrote to memory of 2432	1292	cmd.exe	79
PID 1292 wrote to memory of 2432	1292	cmd.exe	79
PID 1292 wrote to memory of 2432	1292	cmd.exe	79
PID 1292 wrote to memory of 1296	1292	cmd.exe	81
PID 1292 wrote to memory of 1296	1292	cmd.exe	81
PID 1292 wrote to memory of 1296	1292	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\959727c05f54b7ccf3cb751ae7d781c8.exe
"C:\Users\Admin\AppData\Local\Temp\959727c05f54b7ccf3cb751ae7d781c8.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 959727c05f54b7ccf3cb751ae7d781c8.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\959727c05f54b7ccf3cb751ae7d781c8.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 959727c05f54b7ccf3cb751ae7d781c8.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2432
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1296

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/860-114-0x00000000025C0000-0x0000000002657000-memory.dmp

Download

memory/860-115-0x0000000000400000-0x0000000000897000-memory.dmp