vidar | 8b34e6283a4e30009a0ad792723817cfb0d5cdbbbe119948aa6e887bd59e1620

Resubmissions

11-12-2024 17:42

241211-v97eaaspes 10

11-12-2024 17:40

01-10-2024 21:39

29-08-2024 12:54

17-08-2024 17:42

17-08-2024 09:57

Analysis

max time kernel
96s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 17:42

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General

Target

66bddfcb52736_vidar.exe
Size

190KB
MD5

fedb687ed23f77925b35623027f799bb
SHA1

7f27d0290ecc2c81bf2b2d0fa1026f54fd687c81
SHA256

325396d5ffca8546730b9a56c2d0ed99238d48b5e1c3c49e7d027505ea13b8d1
SHA512

6d1fa39560f4d7ca57905bc57d615acf96b1ef69ca2a4d7c0353278e8d4466298ed87f514463c49d671cb0e3b6a269a78636a10a1e463dba5c83fe067dc5df18
SSDEEP

3072:XqsEJybpRHuJKKBardRei4UGvI96/ZO6RAkeOCeP9sZy28se:XqsMyNRHuKikUi42KZO6PffmZy2d

Score

10^/10

vidar 877956da9963e0825aa43a159a358f24 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

10.7

Botnet

877956da9963e0825aa43a159a358f24

https://steamcommunity.com/profiles/76561199751190313

https://t.me/pech0nk

Attributes

user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/3612-4-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/3612-9-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/3612-7-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/3612-14-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/3612-15-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 3156 set thread context of 3612	3156	66bddfcb52736_vidar.exe	84

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66bddfcb52736_vidar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4392	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3612	RegAsm.exe
3612	RegAsm.exe
3612	RegAsm.exe
3612	RegAsm.exe
3612	RegAsm.exe
3612	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 4176	3156	66bddfcb52736_vidar.exe	83
PID 3156 wrote to memory of 4176	3156	66bddfcb52736_vidar.exe	83
PID 3156 wrote to memory of 4176	3156	66bddfcb52736_vidar.exe	83
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3156 wrote to memory of 3612	3156	66bddfcb52736_vidar.exe	84
PID 3612 wrote to memory of 2296	3612	RegAsm.exe	88
PID 3612 wrote to memory of 2296	3612	RegAsm.exe	88
PID 3612 wrote to memory of 2296	3612	RegAsm.exe	88
PID 2296 wrote to memory of 4392	2296	cmd.exe	90
PID 2296 wrote to memory of 4392	2296	cmd.exe	90
PID 2296 wrote to memory of 4392	2296	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\66bddfcb52736_vidar.exe
"C:\Users\Admin\AppData\Local\Temp\66bddfcb52736_vidar.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4176
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\JJJJDAAECGHD" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2296
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:4392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3156-0-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

Filesize
4KB

Download
memory/3156-1-0x00000000003F0000-0x0000000000426000-memory.dmp

Filesize
216KB

Download
memory/3156-11-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/3156-13-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/3612-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3612-9-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3612-7-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3612-14-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3612-15-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download