vidar | 630f2e9dc252f71613a30aaf3544739785a64f3f6fc96fbcc960511b29e0eced

General

Target

file.ps1
Size

29B
MD5

726ac161772f83ef4c852d6c3e158e86
SHA1

66b5487d1d873300d241e96fed4e1ba5d8fea2af
SHA256

630f2e9dc252f71613a30aaf3544739785a64f3f6fc96fbcc960511b29e0eced
SHA512

0b103e71e1a6b5ba400981f45ba460290ec97bd424a80ed4675b12aa68e9d3426bc253c5ae63ad4deba146b69a10b8f532c40344e6194482c3cc73bc4ab95910

Score

10^/10

vidar discovery execution stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/b4cha00

https://steamcommunity.com/profiles/76561199825403037

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:137.0) Gecko/20100101 Firefox/137.0

Signatures

Detect Vidar Stealer 1 IoCs

stealer

resource	yara_rule
behavioral2/memory/5004-80-0x0000000000680000-0x00000000006A2000-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
2	112	powershell.exe
4	112	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
10	416	Process not Found

Executes dropped EXE 1 IoCs

pid	Process
5004	updater.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
112	powershell.exe

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	updater.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
3120	MicrosoftEdgeUpdate.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
112	powershell.exe
112	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	112	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 112 wrote to memory of 5004	112	powershell.exe	85
PID 112 wrote to memory of 5004	112	powershell.exe	85
PID 112 wrote to memory of 5004	112	powershell.exe	85

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\file.ps1
1⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\e0aaf925-9555-447d-8e9a-94232dc470dd\updater.exe
  "C:\Users\Admin\AppData\Local\e0aaf925-9555-447d-8e9a-94232dc470dd\updater.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5004

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PG9lbSBwcm9kdWN0X21hbnVmYWN0dXJlcj0iIiBwcm9kdWN0X25hbWU9IiIvPjxleHAgZXRhZz0iJnF1b3Q7RSt4YkF6Nlk2c1UxMjg5YlM2cWw0VlJMYmtqZkJVR1RNSnNqckhyNDRpST0mcXVvdDsiLz48YXBwIGFwcGlkPSJ7OEE2OUQzNDUtRDU2NC00NjNjLUFGRjEtQTY5RDlFNTMwRjk2fSIgdmVyc2lvbj0iMTIzLjAuNjMxMi4xMjMiIG5leHR2ZXJzaW9uPSIiIGxhbmc9ImVuIiBicmFuZD0iR0dMUyIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjIiIGluc3RhbGxkYXRldGltZT0iMTczOTI4MjMwMiIgb29iZV9pbnN0YWxsX3RpbWU9IjEzMzgzNzUzNTk3Mjc0MDAwMCI-PGV2ZW50IGV2ZW50dHlwZT0iMzEiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjIxNzk4NjIiIHN5c3RlbV91cHRpbWVfdGlja3M9IjUyMTEyMjEyODgiLz48L2FwcD48L3JlcXVlc3Q-
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vpv5dkwl.to3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\e0aaf925-9555-447d-8e9a-94232dc470dd\updater.exe

Filesize
3.2MB

MD5
c1ab7781370290e0f7d8ea98705e8c84

SHA1
bf2cc6fe244d17f05d0185d17758fd726562afee

SHA256
17bc5b41b35d894b37224e5daa66e2c7326e10a8309e299af122c6602afc953e

SHA512
f28465ca2cad0c3476a867acad8f2d530fcddf8aaa83f5003566781e727846192a5519fce89d597d20b9291e8b462f4c34124ce6cfca95387b7547368892f37f

Download Submit
memory/112-10-0x00007FFF961B0000-0x00007FFF96C72000-memory.dmp

Filesize
10.8MB

Download
memory/112-0-0x00007FFF961B3000-0x00007FFF961B5000-memory.dmp

Filesize
8KB

Download
memory/112-11-0x00007FFF961B0000-0x00007FFF96C72000-memory.dmp

Filesize
10.8MB

Download
memory/112-12-0x00007FFF961B0000-0x00007FFF96C72000-memory.dmp

Filesize
10.8MB

Download
memory/112-13-0x00007FFF961B3000-0x00007FFF961B5000-memory.dmp

Filesize
8KB

Download
memory/112-14-0x00007FFF961B0000-0x00007FFF96C72000-memory.dmp

Filesize
10.8MB

Download
memory/112-15-0x000001FE49FA0000-0x000001FE4A746000-memory.dmp

Filesize
7.6MB

Download
memory/112-6-0x000001FE493E0000-0x000001FE49402000-memory.dmp

Filesize
136KB

Download
memory/5004-77-0x0000000000C00000-0x0000000001093000-memory.dmp

Filesize
4.6MB

Download
memory/5004-79-0x0000000000C00000-0x0000000001093000-memory.dmp

Filesize
4.6MB

Download
memory/5004-80-0x0000000000680000-0x00000000006A2000-memory.dmp

Filesize
136KB

Download

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