vidar | a8ca93adc4384dc66b6c8c6034ae5942d29d0aa5291f35d4b80189413d64f76c

Analysis

max time kernel
15s
max time network
13s
platform
windows7_x64
resource
win7
submitted
12-09-2020 14:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

16448b008bef72f524b821b37de3bcca.exe
Size

435KB
MD5

16448b008bef72f524b821b37de3bcca
SHA1

ee6451654e2de568b80d4fb480978a2c481f640c
SHA256

a8ca93adc4384dc66b6c8c6034ae5942d29d0aa5291f35d4b80189413d64f76c
SHA512

4a9fcbc52a0a22b6bfe52ddb9b03e62538abda8158e1029e4f9bd6b41a4cc9c9c4a6453e84193d09b67819ff713a286641fcdf398b967d0c0727ebffbf99ac70

Score

10^/10

spyware stealer vidar discovery

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
2000	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

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

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

JavaScript code in executable 1 IoCs

resource	yara_rule
behavioral1/files/0x00030000000131b7-3.dat	js

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ip-api.com

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	16448b008bef72f524b821b37de3bcca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	16448b008bef72f524b821b37de3bcca.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1412	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe
1492	16448b008bef72f524b821b37de3bcca.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 2000	1492	16448b008bef72f524b821b37de3bcca.exe	30
PID 1492 wrote to memory of 2000	1492	16448b008bef72f524b821b37de3bcca.exe	30
PID 1492 wrote to memory of 2000	1492	16448b008bef72f524b821b37de3bcca.exe	30
PID 1492 wrote to memory of 2000	1492	16448b008bef72f524b821b37de3bcca.exe	30
PID 2000 wrote to memory of 1412	2000	cmd.exe	32
PID 2000 wrote to memory of 1412	2000	cmd.exe	32
PID 2000 wrote to memory of 1412	2000	cmd.exe	32
PID 2000 wrote to memory of 1412	2000	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\16448b008bef72f524b821b37de3bcca.exe
"C:\Users\Admin\AppData\Local\Temp\16448b008bef72f524b821b37de3bcca.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 16448b008bef72f524b821b37de3bcca.exe /f & erase C:\Users\Admin\AppData\Local\Temp\16448b008bef72f524b821b37de3bcca.exe & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2000
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 16448b008bef72f524b821b37de3bcca.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1492-0-0x000000000064B000-0x000000000064C000-memory.dmp

Filesize
4KB

Download
memory/1492-1-0x0000000002150000-0x0000000002161000-memory.dmp

Filesize
68KB

Download
memory/1804-2-0x000007FEF6560000-0x000007FEF67DA000-memory.dmp

Filesize
2.5MB

Download