vidar | b8694a862e4f4dc187f991ac30ee290cb4c4d73cfdbb137e8e24e7860ebcfbed

General

Target
0a1cd54ffc11530d470d70393cba76ee.exe
Size 475KB
Sample210404-2lnhpyc2tx
SHA256 b8694a862e4f4dc187f991ac30ee290cb4c4d73cfdbb137e8e24e7860ebcfbed
MD5 0a1cd54ffc11530d470d70393cba76ee
SHA1 b2218fea7bd09aec2f460a40192bbbf552014508
SHA512 266df8cf3b9a35dda423e233c4d6670879aebfeba55728db4acda1dcd9bbdb36d81d4a22471b4c3f87cae2a7ac60811043ef00d567a882f50964bf331fb31162
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
440	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.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	0a1cd54ffc11530d470d70393cba76ee.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	0a1cd54ffc11530d470d70393cba76ee.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
672	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1344	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	0a1cd54ffc11530d470d70393cba76ee.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	0a1cd54ffc11530d470d70393cba76ee.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.exe
1684	0a1cd54ffc11530d470d70393cba76ee.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 440	1684	0a1cd54ffc11530d470d70393cba76ee.exe	31
PID 1684 wrote to memory of 440	1684	0a1cd54ffc11530d470d70393cba76ee.exe	31
PID 1684 wrote to memory of 440	1684	0a1cd54ffc11530d470d70393cba76ee.exe	31
PID 1684 wrote to memory of 440	1684	0a1cd54ffc11530d470d70393cba76ee.exe	31
PID 440 wrote to memory of 1344	440	cmd.exe	33
PID 440 wrote to memory of 1344	440	cmd.exe	33
PID 440 wrote to memory of 1344	440	cmd.exe	33
PID 440 wrote to memory of 1344	440	cmd.exe	33
PID 440 wrote to memory of 672	440	cmd.exe	35
PID 440 wrote to memory of 672	440	cmd.exe	35
PID 440 wrote to memory of 672	440	cmd.exe	35
PID 440 wrote to memory of 672	440	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\0a1cd54ffc11530d470d70393cba76ee.exe
"C:\Users\Admin\AppData\Local\Temp\0a1cd54ffc11530d470d70393cba76ee.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 0a1cd54ffc11530d470d70393cba76ee.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0a1cd54ffc11530d470d70393cba76ee.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 0a1cd54ffc11530d470d70393cba76ee.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1344
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:672