vidar | c7d2fda303d9928f804d3269d128b216844d9afcb2f533054c8d87e1c6fd4aeb

Analysis

max time kernel
599s
max time network
435s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250207-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250207-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
10-02-2025 19:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

data-Setup/data/extracted_3382/script.ps1
Size

2KB
MD5

d11c3a63c5ba659b5fe7b5534cb03df5
SHA1

d08b1e6af9e5c66454236e5ba64e4c3659db4c47
SHA256

02fba22cf32e907760e64c7e4bc4803e2b5395a7eef2091f3f0c9c103aaa3187
SHA512

a62a807f7ec5ca51ae392f10b68f3b6a326ae596ee2fdd4da662e58662142d5842d8e8abf1f7a84aba85ef2b067803733301b769024ae8c7bc3ce625c485b4ec

Score

10^/10

vidar discovery execution spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/sok33tn

https://steamcommunity.com/profiles/76561199824159981

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Signatures

Detect Vidar Stealer 6 IoCs

stealer

resource	yara_rule
behavioral14/memory/4872-52-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral14/memory/4872-54-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral14/memory/4872-61-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral14/memory/4872-62-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral14/memory/4872-63-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7
behavioral14/memory/4872-64-0x0000000000400000-0x0000000000422000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar family
vidar

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	3692	powershell.exe
7	3692	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3692	powershell.exe
4396	powershell.exe

Downloads MZ/PE file 2 IoCs

flow	pid	Process
7	3692	powershell.exe
55	1200	Process not Found

Executes dropped EXE 3 IoCs

pid	Process
2696	RK81HELC.exe
4872	RK81HELC.exe
3732	OXVJTH81.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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 2696 set thread context of 4872	2696	RK81HELC.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1184	2696	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 3 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	RK81HELC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RK81HELC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4688	MicrosoftEdgeUpdate.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RK81HELC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RK81HELC.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3692	powershell.exe
3692	powershell.exe
4396	powershell.exe
4396	powershell.exe
4872	RK81HELC.exe
4872	RK81HELC.exe
3732	OXVJTH81.exe
3732	OXVJTH81.exe
3732	OXVJTH81.exe
3732	OXVJTH81.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	3692	powershell.exe
Token: SeDebugPrivilege	4396	powershell.exe
Token: SeIncreaseQuotaPrivilege	4396	powershell.exe
Token: SeSecurityPrivilege	4396	powershell.exe
Token: SeTakeOwnershipPrivilege	4396	powershell.exe
Token: SeLoadDriverPrivilege	4396	powershell.exe
Token: SeSystemProfilePrivilege	4396	powershell.exe
Token: SeSystemtimePrivilege	4396	powershell.exe
Token: SeProfSingleProcessPrivilege	4396	powershell.exe
Token: SeIncBasePriorityPrivilege	4396	powershell.exe
Token: SeCreatePagefilePrivilege	4396	powershell.exe
Token: SeBackupPrivilege	4396	powershell.exe
Token: SeRestorePrivilege	4396	powershell.exe
Token: SeShutdownPrivilege	4396	powershell.exe
Token: SeDebugPrivilege	4396	powershell.exe
Token: SeSystemEnvironmentPrivilege	4396	powershell.exe
Token: SeRemoteShutdownPrivilege	4396	powershell.exe
Token: SeUndockPrivilege	4396	powershell.exe
Token: SeManageVolumePrivilege	4396	powershell.exe
Token: 33	4396	powershell.exe
Token: 34	4396	powershell.exe
Token: 35	4396	powershell.exe
Token: 36	4396	powershell.exe
Token: SeShutdownPrivilege	3568	Explorer.EXE
Token: SeCreatePagefilePrivilege	3568	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 4396	3692	powershell.exe	85
PID 3692 wrote to memory of 4396	3692	powershell.exe	85
PID 3692 wrote to memory of 2696	3692	powershell.exe	89
PID 3692 wrote to memory of 2696	3692	powershell.exe	89
PID 3692 wrote to memory of 2696	3692	powershell.exe	89
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 2696 wrote to memory of 4872	2696	RK81HELC.exe	90
PID 3692 wrote to memory of 3732	3692	powershell.exe	97
PID 3692 wrote to memory of 3732	3692	powershell.exe	97
PID 3732 wrote to memory of 3568	3732	OXVJTH81.exe	57

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3568
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\data-Setup\data\extracted_3382\script.ps1
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Downloads MZ/PE file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3692
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Add-MpPreference -ExclusionPath 'C:\'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4396
- - C:\Users\Admin\AppData\Roaming\RK81HELC.exe
    "C:\Users\Admin\AppData\Roaming\RK81HELC.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Users\Admin\AppData\Roaming\RK81HELC.exe
      "C:\Users\Admin\AppData\Roaming\RK81HELC.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      PID:4872
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 808
      4⤵
      Program crash
      PID:1184
- - C:\Users\Admin\AppData\Roaming\OXVJTH81.exe
    "C:\Users\Admin\AppData\Roaming\OXVJTH81.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2696 -ip 2696
1⤵
PID:992

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-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
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
020d1cbef5aeb22088c0faff8d76af4e

SHA1
93e7f27b8fb57cfea4ae330bedcace1a8ce7c014

SHA256
cb283829df7f7ca2f7f8072ed014bebb7d424581e8672a9fa5683f3674726bb0

SHA512
1046228ed9d08e5296c02409b5aa460e8280a633f7f2022ec7dc7c1e750522260006844bd5114ec713593bce1d10b8932963a8630e6707e76b45a0cb8c8ff53d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
8bfea8a1c19e03c51a3ad085d1621512

SHA1
4a4d08e8fe24ec69d53c342694804ddfd0ee38be

SHA256
4261e63e64b714735fdd2d1a6b9ed200dae850a883ad2e674657d34cffdd1714

SHA512
b26e89e94f936bb675abeb6c695026435bb892c3250ccd20f814dc82fcab14ba435d0c7e34c556c91d3ca09798caba6c19856be954b846131d0edfda3a1547ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a1wikvbd.aj4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\OXVJTH81.exe

Filesize
11.8MB

MD5
eca54760f1e96a78e3f6bc537debc6bc

SHA1
82ef61482d781849a80f9f9cff67e2f76ffb7035

SHA256
b9b69e4088f61ce32506078d301f9cfc7db064945d6e608724e213aab5852db5

SHA512
f70749a89d7d66c2089981fc161db8c88cdf4a3ff6ae6df18b2c6f30b351ad9dd33e527ebea0052db2b60896f7caa44ca2edafa9381db689867d2f9806e36944

Download Submit
C:\Users\Admin\AppData\Roaming\RK81HELC.exe

Filesize
200KB

MD5
00affd80e21068e56ae72712509f7a98

SHA1
ca6af85f9f2a735f258e1a43043a4b54cdffa9df

SHA256
a03ce36025010929a9cc0d286ed02100d259ffc7693beb3623ea7007dce4802c

SHA512
07c3f0336e4a6d85bc7c14f1fcba924e45e077f0ada157fa17c4b989fced5d1ac59054c7e90729e63ce3d4f0de7e280a35776c614f681609714418d9a847b7d6

Download Submit
memory/2696-50-0x0000000005A50000-0x0000000005FF6000-memory.dmp

Filesize
5.6MB

Download
memory/2696-49-0x0000000000990000-0x00000000009C6000-memory.dmp

Filesize
216KB

Download
memory/3568-85-0x00007FF72B640000-0x00007FF72C91E000-memory.dmp

Filesize
18.9MB

Download
memory/3692-16-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-14-0x00007FF9560F3000-0x00007FF9560F5000-memory.dmp

Filesize
8KB

Download
memory/3692-13-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-11-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-79-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-12-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-1-0x0000029667BF0000-0x0000029667C12000-memory.dmp

Filesize
136KB

Download
memory/3692-17-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3692-0-0x00007FF9560F3000-0x00007FF9560F5000-memory.dmp

Filesize
8KB

Download
memory/3692-15-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/3732-83-0x00007FF72B640000-0x00007FF72C91D000-memory.dmp

Filesize
18.9MB

Download
memory/3732-81-0x00007FF974830000-0x00007FF974832000-memory.dmp

Filesize
8KB

Download
memory/4396-34-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4396-31-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4396-30-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4396-29-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4396-28-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4396-18-0x00007FF9560F0000-0x00007FF956BB2000-memory.dmp

Filesize
10.8MB

Download
memory/4872-52-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4872-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4872-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4872-62-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4872-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4872-54-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download