vidar | 14816f6846eec2f130ff1010f2c80dccfeda6b926f48a39ad89351d3c0ce73ef

General

Target
374b71a9054a80a0249d71322b79c480.exe
Size 669KB
Sample211005-v8ac6aabf4
SHA256 14816f6846eec2f130ff1010f2c80dccfeda6b926f48a39ad89351d3c0ce73ef
MD5 374b71a9054a80a0249d71322b79c480
SHA1 f8aac2ff23a9a33af53bc7878cf17f74e1725ea7
SHA512 4a4735355b3b919f5fe2f2f20e97e4cf33efc7f85221c6b4a5d0983da97e947d0f443b7bf326b3f32413fda82554cbb7fbdd6e75473d6ec8be45dc24c04505d9
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2492-115-0x0000000000D40000-0x0000000000E16000-memory.dmp	family_vidar
behavioral2/memory/2492-116-0x0000000000400000-0x00000000008D7000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.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
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	374b71a9054a80a0249d71322b79c480.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	374b71a9054a80a0249d71322b79c480.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
512	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
8	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe
2492	374b71a9054a80a0249d71322b79c480.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2628	2492	374b71a9054a80a0249d71322b79c480.exe	70
PID 2492 wrote to memory of 2628	2492	374b71a9054a80a0249d71322b79c480.exe	70
PID 2492 wrote to memory of 2628	2492	374b71a9054a80a0249d71322b79c480.exe	70
PID 2628 wrote to memory of 8	2628	cmd.exe	72
PID 2628 wrote to memory of 8	2628	cmd.exe	72
PID 2628 wrote to memory of 8	2628	cmd.exe	72
PID 2628 wrote to memory of 512	2628	cmd.exe	74
PID 2628 wrote to memory of 512	2628	cmd.exe	74
PID 2628 wrote to memory of 512	2628	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\374b71a9054a80a0249d71322b79c480.exe
"C:\Users\Admin\AppData\Local\Temp\374b71a9054a80a0249d71322b79c480.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 374b71a9054a80a0249d71322b79c480.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\374b71a9054a80a0249d71322b79c480.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2628
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 374b71a9054a80a0249d71322b79c480.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:8
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2492-115-0x0000000000D40000-0x0000000000E16000-memory.dmp

Download

memory/2492-116-0x0000000000400000-0x00000000008D7000-memory.dmp