vidar | 2bc31edc9fb8b51b6add2e52daa09a565b566dfc4db96ccb281ec1aae5d07512

General

Target
4d3df6a13078b423f9be3b397e53e6f3.exe
Size 633KB
Sample210507-cebehn617s
SHA256 2bc31edc9fb8b51b6add2e52daa09a565b566dfc4db96ccb281ec1aae5d07512
MD5 4d3df6a13078b423f9be3b397e53e6f3
SHA1 686c00fc0265e60260be4fcd294b66c843dba1e4
SHA512 99259b64e53a77da1dc38ab2a8ebb4cf2e33cdb71a6f1efe5cd65e5c79c35edc8519540ea7e95996bab720bfa79643ec68e01cdaf40e8bc9fcd09ac560d42e08
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
828	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.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	4d3df6a13078b423f9be3b397e53e6f3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4d3df6a13078b423f9be3b397e53e6f3.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1872	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1036	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	4d3df6a13078b423f9be3b397e53e6f3.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	4d3df6a13078b423f9be3b397e53e6f3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.exe
1268	4d3df6a13078b423f9be3b397e53e6f3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 828	1268	4d3df6a13078b423f9be3b397e53e6f3.exe	31
PID 1268 wrote to memory of 828	1268	4d3df6a13078b423f9be3b397e53e6f3.exe	31
PID 1268 wrote to memory of 828	1268	4d3df6a13078b423f9be3b397e53e6f3.exe	31
PID 1268 wrote to memory of 828	1268	4d3df6a13078b423f9be3b397e53e6f3.exe	31
PID 828 wrote to memory of 1036	828	cmd.exe	33
PID 828 wrote to memory of 1036	828	cmd.exe	33
PID 828 wrote to memory of 1036	828	cmd.exe	33
PID 828 wrote to memory of 1036	828	cmd.exe	33
PID 828 wrote to memory of 1872	828	cmd.exe	35
PID 828 wrote to memory of 1872	828	cmd.exe	35
PID 828 wrote to memory of 1872	828	cmd.exe	35
PID 828 wrote to memory of 1872	828	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\4d3df6a13078b423f9be3b397e53e6f3.exe
"C:\Users\Admin\AppData\Local\Temp\4d3df6a13078b423f9be3b397e53e6f3.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 4d3df6a13078b423f9be3b397e53e6f3.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4d3df6a13078b423f9be3b397e53e6f3.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:828
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 4d3df6a13078b423f9be3b397e53e6f3.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1036
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1872