vidar | fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56

General

Target

fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe
Size

282KB
MD5

3a507b0b6463481cbb8d248efa262ddd
SHA1

97cc6f79eb1352660997a2194d7d3c9e1aff7a0e
SHA256

fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56
SHA512

4e0abe7ecd536b25146a663ebc49afd955727d32e2e01a6b7305afec79decbc649e95e841d18e226e346eb4d1e91228c215888c1ffb5363d888f6a1a6fed57a8
SSDEEP

6144:4ELt9KOtbS8O8F+pQ1UUPeZEUA85wR1ffmFSA7aFkHJuNEO:37tbStpixPRUkWB7a0wNEO

Score

10^/10

vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/4696-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4696-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4696-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4696-25-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/4696-26-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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
T1552.001
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3876 set thread context of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2604	4696	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4696	RegAsm.exe
4696	RegAsm.exe
4696	RegAsm.exe
4696	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83
PID 3876 wrote to memory of 4696	3876	fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe	83

C:\Users\Admin\AppData\Local\Temp\fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe
"C:\Users\Admin\AppData\Local\Temp\fdf090545751ce09207f7cec140d21d246cb2f25002683e2cd36c92e18707f56.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3876
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4696
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 2332
    3⤵
    - Program crash
    PID:2604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4696 -ip 4696
1⤵
PID:5004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3876-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/3876-1-0x0000000000860000-0x00000000008AA000-memory.dmp

Filesize
296KB

Download
memory/3876-13-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-28-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/4696-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4696-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4696-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4696-25-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/4696-26-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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