vidar | 0f0da1d14f83ff61c448df9161c01d1ee11cf4dccbbc48df79fff89f2fd18454

General

Target

4c6b59d26a2a995a788b021f1f30f764.exe
Size

606KB
MD5

4c6b59d26a2a995a788b021f1f30f764
SHA1

b6d94ef132caed5c2b01d7b63a1788647c9a4042
SHA256

0f0da1d14f83ff61c448df9161c01d1ee11cf4dccbbc48df79fff89f2fd18454
SHA512

d429e2166ba853f500d142ee943e72ade83c1ef20522563f911551303b40220821b9c7b73b9124c05b0e116960c90872fbe94cafec3ac8c2eac8a3f344f0c81a

Score

10^/10

vidar 1008 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

41

Botnet

1008

C2

https://mas.to/@killern0

Attributes

profile_id
1008

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
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/4648-114-0x0000000002300000-0x00000000023D4000-memory.dmp	family_vidar
behavioral2/memory/4648-115-0x0000000000400000-0x000000000051E000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.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	4c6b59d26a2a995a788b021f1f30f764.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4c6b59d26a2a995a788b021f1f30f764.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4892	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4808	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe
4648	4c6b59d26a2a995a788b021f1f30f764.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4808	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 4764	4648	4c6b59d26a2a995a788b021f1f30f764.exe	68
PID 4648 wrote to memory of 4764	4648	4c6b59d26a2a995a788b021f1f30f764.exe	68
PID 4648 wrote to memory of 4764	4648	4c6b59d26a2a995a788b021f1f30f764.exe	68
PID 4764 wrote to memory of 4808	4764	cmd.exe	70
PID 4764 wrote to memory of 4808	4764	cmd.exe	70
PID 4764 wrote to memory of 4808	4764	cmd.exe	70
PID 4764 wrote to memory of 4892	4764	cmd.exe	72
PID 4764 wrote to memory of 4892	4764	cmd.exe	72
PID 4764 wrote to memory of 4892	4764	cmd.exe	72

C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe
"C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 4c6b59d26a2a995a788b021f1f30f764.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 4c6b59d26a2a995a788b021f1f30f764.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4808
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:4892

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4648-114-0x0000000002300000-0x00000000023D4000-memory.dmp

Filesize
848KB

Download
memory/4648-115-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing