vidar | 498a439463d296db338fe3672714b56a8dbddd1864ff302d005fa451bf9a9c22

General

Target
1DAC307792E45851205962E1C6FDE7AF.exe
Size 582KB
Sample210420-n458bc4x1e
SHA256 498a439463d296db338fe3672714b56a8dbddd1864ff302d005fa451bf9a9c22
MD5 1dac307792e45851205962e1c6fde7af
SHA1 c49be84a3c3d491ab569b35659765ab70689110c
SHA512 a4dc5c03d53a6f6d12ffda182312fea7fdbcd0c2d6a5de33002c97597934e953ae81f76f61ee4e56cae2fc985a0542d14d1925e126cebc3c8e001d529633e1e2
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
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.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	1DAC307792E45851205962E1C6FDE7AF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1DAC307792E45851205962E1C6FDE7AF.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3940	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2756	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe
3380	1DAC307792E45851205962E1C6FDE7AF.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3380 wrote to memory of 3808	3380	1DAC307792E45851205962E1C6FDE7AF.exe	79
PID 3380 wrote to memory of 3808	3380	1DAC307792E45851205962E1C6FDE7AF.exe	79
PID 3380 wrote to memory of 3808	3380	1DAC307792E45851205962E1C6FDE7AF.exe	79
PID 3808 wrote to memory of 2756	3808	cmd.exe	81
PID 3808 wrote to memory of 2756	3808	cmd.exe	81
PID 3808 wrote to memory of 2756	3808	cmd.exe	81
PID 3808 wrote to memory of 3940	3808	cmd.exe	82
PID 3808 wrote to memory of 3940	3808	cmd.exe	82
PID 3808 wrote to memory of 3940	3808	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\1DAC307792E45851205962E1C6FDE7AF.exe
"C:\Users\Admin\AppData\Local\Temp\1DAC307792E45851205962E1C6FDE7AF.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 1DAC307792E45851205962E1C6FDE7AF.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\1DAC307792E45851205962E1C6FDE7AF.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3808
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 1DAC307792E45851205962E1C6FDE7AF.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2756
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3940

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/3380-114-0x0000000004870000-0x0000000004904000-memory.dmp

Download

memory/3380-115-0x0000000000400000-0x0000000002C03000-memory.dmp