vidar | 5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5

General

Target

5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
Size

2.2MB
MD5

a3919cf297b18238230bc02e6e086cc5
SHA1

3b655b7ca6be24f7475baa74265ae9f493fbca86
SHA256

5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5
SHA512

4b49a783bcf5ec9f855ecb9e62f7bc2b86f71ab55f4c8bfce56c8f2083bf70376fc589ad29bddddfa723d66350af6a5d7a019359e046f68570a3e4648a8f8e77

Score

10^/10

vidar 869 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

48.6

Botnet

869

C2

https://mastodon.online/@valhalla

https://koyu.space/@valhalla

Attributes

profile_id
869

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2504-117-0x0000000000400000-0x0000000000638000-memory.dmp	family_vidar
behavioral1/memory/2504-116-0x0000000002B80000-0x0000000002C57000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.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
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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1852	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
528	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	528	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 1996	2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe	68
PID 2504 wrote to memory of 1996	2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe	68
PID 2504 wrote to memory of 1996	2504	5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe	68
PID 1996 wrote to memory of 528	1996	cmd.exe	70
PID 1996 wrote to memory of 528	1996	cmd.exe	70
PID 1996 wrote to memory of 528	1996	cmd.exe	70
PID 1996 wrote to memory of 1852	1996	cmd.exe	72
PID 1996 wrote to memory of 1852	1996	cmd.exe	72
PID 1996 wrote to memory of 1852	1996	cmd.exe	72

C:\Users\Admin\AppData\Local\Temp\5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe
"C:\Users\Admin\AppData\Local\Temp\5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 5c3301e1b4ec121f2562648796ef7d13408053849d9680d10f1d194e9ab894b5.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:528
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1852

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2504-115-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/2504-116-0x0000000002B80000-0x0000000002C57000-memory.dmp

Filesize
860KB

Download
memory/2504-117-0x0000000000400000-0x0000000000638000-memory.dmp

Filesize
2.2MB

Download

Analysis

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