vidar | f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8

General

Target

f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
Size

2.2MB
MD5

3e2a66c674f18aa892ec7a9883164596
SHA1

94a37bce5329b88a8e79f9006769b3d873741eae
SHA256

f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8
SHA512

bc6adaa118cca8dd53e398bcdabeda7b743fb555d19fc1e5a2e5df1707a0ca909e1d22595328902eca7aafe53f366a6b64d4c8d8da8a30a9c42d2db9fb66b438

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/3576-119-0x00000000029E0000-0x0000000002AB7000-memory.dmp	family_vidar
behavioral1/memory/3576-120-0x0000000000400000-0x0000000000638000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2852	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
700	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	700	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 4312	3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe	69
PID 3576 wrote to memory of 4312	3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe	69
PID 3576 wrote to memory of 4312	3576	f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe	69
PID 4312 wrote to memory of 700	4312	cmd.exe	71
PID 4312 wrote to memory of 700	4312	cmd.exe	71
PID 4312 wrote to memory of 700	4312	cmd.exe	71
PID 4312 wrote to memory of 2852	4312	cmd.exe	73
PID 4312 wrote to memory of 2852	4312	cmd.exe	73
PID 4312 wrote to memory of 2852	4312	cmd.exe	73

C:\Users\Admin\AppData\Local\Temp\f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe
"C:\Users\Admin\AppData\Local\Temp\f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4312
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im f834738127238a52e91b35ee95ce880413957710c2381bc741003821690192e8.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:700
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:2852

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

Replay Monitor

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Downloads

memory/3576-118-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/3576-120-0x0000000000400000-0x0000000000638000-memory.dmp

Filesize
2.2MB

Download
memory/3576-119-0x00000000029E0000-0x0000000002AB7000-memory.dmp

Filesize
860KB

Download

Analysis

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