vidar | f86a60efa370e34c5f0ba6b700ca433ae7df04fa8a6f0d8a0d84a45fd93430d7

General

Target
f512223d9e2d017e65df549686cd52c7.exe
Size 612KB
Sample210423-eghpwe659s
SHA256 f86a60efa370e34c5f0ba6b700ca433ae7df04fa8a6f0d8a0d84a45fd93430d7
MD5 f512223d9e2d017e65df549686cd52c7
SHA1 b3283ff635886abece86f5b1d0a3473f75f10edd
SHA512 86f9b72a9ca0fcc818e0af46aaf44f7c3c28740125ab1446110df92c4a400f16a11fbc7e816c15fd3455a9a3d9b43d9ba3f16b3583e1ae39a6b004152048c5df
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
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.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	f512223d9e2d017e65df549686cd52c7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f512223d9e2d017e65df549686cd52c7.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1824	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3032	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe
624	f512223d9e2d017e65df549686cd52c7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 2888	624	f512223d9e2d017e65df549686cd52c7.exe	77
PID 624 wrote to memory of 2888	624	f512223d9e2d017e65df549686cd52c7.exe	77
PID 624 wrote to memory of 2888	624	f512223d9e2d017e65df549686cd52c7.exe	77
PID 2888 wrote to memory of 3032	2888	cmd.exe	79
PID 2888 wrote to memory of 3032	2888	cmd.exe	79
PID 2888 wrote to memory of 3032	2888	cmd.exe	79
PID 2888 wrote to memory of 1824	2888	cmd.exe	80
PID 2888 wrote to memory of 1824	2888	cmd.exe	80
PID 2888 wrote to memory of 1824	2888	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe
"C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im f512223d9e2d017e65df549686cd52c7.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f512223d9e2d017e65df549686cd52c7.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im f512223d9e2d017e65df549686cd52c7.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3032
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1824

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/624-114-0x0000000004300000-0x0000000004395000-memory.dmp

Download

memory/624-115-0x0000000000400000-0x0000000003E01000-memory.dmp