vidar | bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda

General

Target
bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
Size 501KB
Sample220520-gl4ftschc4
SHA256 bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda
MD5 15da97ee7d404ff8d7c3b2b0cb8329ca
SHA1 2e3a61cda59a5b9ef8b22932eb369d1d7836ef70
SHA512 22cd806a68a6ebd135cbc3a0617e21b79747c9f3a3c8cf174c14c74e2cccf0f4bfa4f0ef414d3814c9f4b29e44b2875cee5b2f842ee77a6b72d641501095bd0c
MD5 SHA1 SHA512

Score

10^/10

vidar 517 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

29.7

Botnet

517

C2

http://shashlyndos.com/

Attributes

profile_id
517

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 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/2200-132-0x0000000004F70000-0x0000000004FFA000-memory.dmp	family_vidar
behavioral2/memory/2200-133-0x0000000000400000-0x000000000336D000-memory.dmp	family_vidar

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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.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 local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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
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

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
32	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
3268	2200	WerFault.exe	79
4824	2200	WerFault.exe	79
4328	2200	WerFault.exe	79
2688	2200	WerFault.exe	79
3188	2200	WerFault.exe	79
3332	2200	WerFault.exe	79
4644	2200	WerFault.exe	79
5044	2200	WerFault.exe	79

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	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4112	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4112	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 3204	2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe	102
PID 2200 wrote to memory of 3204	2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe	102
PID 2200 wrote to memory of 3204	2200	bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe	102
PID 3204 wrote to memory of 4112	3204	cmd.exe	106
PID 3204 wrote to memory of 4112	3204	cmd.exe	106
PID 3204 wrote to memory of 4112	3204	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
"C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe"
1⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 792
  2⤵
  - Program crash
  PID:3268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 784
  2⤵
  - Program crash
  PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 784
  2⤵
  - Program crash
  PID:4328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 792
  2⤵
  - Program crash
  PID:2688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 948
  2⤵
  - Program crash
  PID:3188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1056
  2⤵
  - Program crash
  PID:3332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1428
  2⤵
  - Program crash
  PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe /f & erase C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1560
  2⤵
  - Program crash
  PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2200 -ip 2200
1⤵
PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2200 -ip 2200
1⤵
PID:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2200 -ip 2200
1⤵
PID:1516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2200 -ip 2200
1⤵
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2200 -ip 2200
1⤵
PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2200 -ip 2200
1⤵
PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2200 -ip 2200
1⤵
PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 2200 -ip 2200
1⤵
PID:444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

4

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2200-131-0x0000000003400000-0x0000000003500000-memory.dmp

Download

memory/2200-132-0x0000000004F70000-0x0000000004FFA000-memory.dmp

Download

memory/2200-133-0x0000000000400000-0x000000000336D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads