vidar | 76b7e0265f5fd3d3fead08df85a41d4fac0ab5bd881f9c44dca6987e69c9b63c

General

Target
641be2c98b6b46e8dacf34789090afd6.exe
Size 3.2MB
Sample211022-jyaemabch3
SHA256 76b7e0265f5fd3d3fead08df85a41d4fac0ab5bd881f9c44dca6987e69c9b63c
MD5 641be2c98b6b46e8dacf34789090afd6
SHA1 bc02cf5282fa75a16d6dcdd71a23c1b40eb28ceb
SHA512 4021a1eeb5ede536ce6910370debe9f9e4a0a4e2321f3fe72cea7e965571c723715e7bdfd5e6dde71a9b775ad4a9311b6d2cec95c23050673a6a9324d05e184e
MD5 SHA1 SHA512

Score

10^/10

vidar 1045 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

1045

C2

https://mas.to/@xeroxxx

Attributes

profile_id
1045

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2628-116-0x0000000003700000-0x0000000003800000-memory.dmp	family_vidar
behavioral2/memory/2628-117-0x0000000000400000-0x0000000000744000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe

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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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	641be2c98b6b46e8dacf34789090afd6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	641be2c98b6b46e8dacf34789090afd6.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4044	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2416	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\D1EB23A46D17D68FD92564C2F1F1601764D8E349	641be2c98b6b46e8dacf34789090afd6.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	641be2c98b6b46e8dacf34789090afd6.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe
2628	641be2c98b6b46e8dacf34789090afd6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2416	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 956	2628	641be2c98b6b46e8dacf34789090afd6.exe	69
PID 2628 wrote to memory of 956	2628	641be2c98b6b46e8dacf34789090afd6.exe	69
PID 2628 wrote to memory of 956	2628	641be2c98b6b46e8dacf34789090afd6.exe	69
PID 956 wrote to memory of 2416	956	cmd.exe	71
PID 956 wrote to memory of 2416	956	cmd.exe	71
PID 956 wrote to memory of 2416	956	cmd.exe	71
PID 956 wrote to memory of 4044	956	cmd.exe	73
PID 956 wrote to memory of 4044	956	cmd.exe	73
PID 956 wrote to memory of 4044	956	cmd.exe	73

C:\Users\Admin\AppData\Local\Temp\641be2c98b6b46e8dacf34789090afd6.exe
"C:\Users\Admin\AppData\Local\Temp\641be2c98b6b46e8dacf34789090afd6.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 641be2c98b6b46e8dacf34789090afd6.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\641be2c98b6b46e8dacf34789090afd6.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:956
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 641be2c98b6b46e8dacf34789090afd6.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2416
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:4044