vidar | ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86

General

Target
9fcf0f5b99f398b9e6b6afaa25c60917.exe
Size 577KB
Sample210923-p6ebfaecfq
SHA256 ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86
MD5 9fcf0f5b99f398b9e6b6afaa25c60917
SHA1 720faa2bf8de76f8e92161b792f0a99eeeb63883
SHA512 e9995cd9c5c3f694a9eb895de2840cdaecfd29681f2ca1616f9860fa2aabbbfdc1e678a3e54b69215c4ab6fdea8235a70773aa63d9e17d1c11647ae872bbb534
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/392-115-0x0000000002100000-0x00000000021D4000-memory.dmp	family_vidar
behavioral2/memory/392-116-0x0000000000400000-0x0000000000517000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.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	9fcf0f5b99f398b9e6b6afaa25c60917.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9fcf0f5b99f398b9e6b6afaa25c60917.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3588	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3496	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe
392	9fcf0f5b99f398b9e6b6afaa25c60917.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3496	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 2784	392	9fcf0f5b99f398b9e6b6afaa25c60917.exe	70
PID 392 wrote to memory of 2784	392	9fcf0f5b99f398b9e6b6afaa25c60917.exe	70
PID 392 wrote to memory of 2784	392	9fcf0f5b99f398b9e6b6afaa25c60917.exe	70
PID 2784 wrote to memory of 3496	2784	cmd.exe	72
PID 2784 wrote to memory of 3496	2784	cmd.exe	72
PID 2784 wrote to memory of 3496	2784	cmd.exe	72
PID 2784 wrote to memory of 3588	2784	cmd.exe	74
PID 2784 wrote to memory of 3588	2784	cmd.exe	74
PID 2784 wrote to memory of 3588	2784	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\9fcf0f5b99f398b9e6b6afaa25c60917.exe
"C:\Users\Admin\AppData\Local\Temp\9fcf0f5b99f398b9e6b6afaa25c60917.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 9fcf0f5b99f398b9e6b6afaa25c60917.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9fcf0f5b99f398b9e6b6afaa25c60917.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 9fcf0f5b99f398b9e6b6afaa25c60917.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3496
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3588

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/392-115-0x0000000002100000-0x00000000021D4000-memory.dmp

Download

memory/392-116-0x0000000000400000-0x0000000000517000-memory.dmp