vidar | f86a60efa370e34c5f0ba6b700ca433ae7df04fa8a6f0d8a0d84a45fd93430d7

General

Target
f512223d9e2d017e65df549686cd52c7.exe
Size 612KB
Sample210423-eghpwe659s
SHA256 f86a60efa370e34c5f0ba6b700ca433ae7df04fa8a6f0d8a0d84a45fd93430d7
MD5 f512223d9e2d017e65df549686cd52c7
SHA1 b3283ff635886abece86f5b1d0a3473f75f10edd
SHA512 86f9b72a9ca0fcc818e0af46aaf44f7c3c28740125ab1446110df92c4a400f16a11fbc7e816c15fd3455a9a3d9b43d9ba3f16b3583e1ae39a6b004152048c5df
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

Deletes itself 1 IoCs

pid	Process
572	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.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	f512223d9e2d017e65df549686cd52c7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f512223d9e2d017e65df549686cd52c7.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
628	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
960	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	f512223d9e2d017e65df549686cd52c7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	f512223d9e2d017e65df549686cd52c7.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.exe
540	f512223d9e2d017e65df549686cd52c7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	960	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 572	540	f512223d9e2d017e65df549686cd52c7.exe	31
PID 540 wrote to memory of 572	540	f512223d9e2d017e65df549686cd52c7.exe	31
PID 540 wrote to memory of 572	540	f512223d9e2d017e65df549686cd52c7.exe	31
PID 540 wrote to memory of 572	540	f512223d9e2d017e65df549686cd52c7.exe	31
PID 572 wrote to memory of 960	572	cmd.exe	33
PID 572 wrote to memory of 960	572	cmd.exe	33
PID 572 wrote to memory of 960	572	cmd.exe	33
PID 572 wrote to memory of 960	572	cmd.exe	33
PID 572 wrote to memory of 628	572	cmd.exe	35
PID 572 wrote to memory of 628	572	cmd.exe	35
PID 572 wrote to memory of 628	572	cmd.exe	35
PID 572 wrote to memory of 628	572	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe
"C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im f512223d9e2d017e65df549686cd52c7.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:572
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im f512223d9e2d017e65df549686cd52c7.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:960
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:628