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

Loads dropped DLL 2 IoCs

pid	Process
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	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
1556	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1160	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe
648	4d3df6a13078b423f9be3b397e53e6f3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 2752	648	4d3df6a13078b423f9be3b397e53e6f3.exe	78
PID 648 wrote to memory of 2752	648	4d3df6a13078b423f9be3b397e53e6f3.exe	78
PID 648 wrote to memory of 2752	648	4d3df6a13078b423f9be3b397e53e6f3.exe	78
PID 2752 wrote to memory of 1160	2752	cmd.exe	80
PID 2752 wrote to memory of 1160	2752	cmd.exe	80
PID 2752 wrote to memory of 1160	2752	cmd.exe	80
PID 2752 wrote to memory of 1556	2752	cmd.exe	81
PID 2752 wrote to memory of 1556	2752	cmd.exe	81
PID 2752 wrote to memory of 1556	2752	cmd.exe	81

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:648
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 4d3df6a13078b423f9be3b397e53e6f3.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1160
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1556

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/648-114-0x0000000000970000-0x0000000000ABA000-memory.dmp

Download

memory/648-115-0x0000000000400000-0x0000000000897000-memory.dmp