vidar | abaa9d3b449c635f19900f3592ac80e73451590cf9ff48cb0df5b79e06c19b02

General

Target
51d087facc08f92ec7a09be8eb0f1c68.exe
Size 605KB
Sample220324-1chmjsbdan
SHA256 abaa9d3b449c635f19900f3592ac80e73451590cf9ff48cb0df5b79e06c19b02
MD5 51d087facc08f92ec7a09be8eb0f1c68
SHA1 30c46a6cc56820c6643c7912b09536c1a4f8eaf5
SHA512 647249125b958b2b31c57e499b7b97e084832c111a079ca05d774a785829f0cd73fcadc1220d12201b5fd509668d71f3284d60eac0bebed7b1eba4a2da15c363
MD5 SHA1 SHA512

Score

10^/10

vidar 1164 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

51

Botnet

1164

C2

https://stereodon.social/@samssal
https://climatejustice.social/@s4m7al

Attributes

profile_id
1164

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 Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
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
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2996-132-0x00000000022C0000-0x000000000236C000-memory.dmp	family_vidar
behavioral2/memory/2996-133-0x0000000000400000-0x00000000004DA000-memory.dmp	family_vidar

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	51d087facc08f92ec7a09be8eb0f1c68.exe

Loads dropped DLL 2 IoCs

pid	Process
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.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	51d087facc08f92ec7a09be8eb0f1c68.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	51d087facc08f92ec7a09be8eb0f1c68.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1412	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3868	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe
2996	51d087facc08f92ec7a09be8eb0f1c68.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3868	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 3652	2996	51d087facc08f92ec7a09be8eb0f1c68.exe	90
PID 2996 wrote to memory of 3652	2996	51d087facc08f92ec7a09be8eb0f1c68.exe	90
PID 2996 wrote to memory of 3652	2996	51d087facc08f92ec7a09be8eb0f1c68.exe	90
PID 3652 wrote to memory of 3868	3652	cmd.exe	92
PID 3652 wrote to memory of 3868	3652	cmd.exe	92
PID 3652 wrote to memory of 3868	3652	cmd.exe	92
PID 3652 wrote to memory of 1412	3652	cmd.exe	93
PID 3652 wrote to memory of 1412	3652	cmd.exe	93
PID 3652 wrote to memory of 1412	3652	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe
"C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 51d087facc08f92ec7a09be8eb0f1c68.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 51d087facc08f92ec7a09be8eb0f1c68.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3868
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2996-133-0x0000000000400000-0x00000000004DA000-memory.dmp

Download

memory/2996-130-0x00000000005D8000-0x0000000000644000-memory.dmp

Download

memory/2996-132-0x00000000022C0000-0x000000000236C000-memory.dmp

Download

memory/2996-131-0x00000000005D8000-0x0000000000644000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads