vidar | 036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6

General

Target

036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe
Size

401KB
MD5

6b082832f014548bf1703ddaed1e16b9
SHA1

93d4d923d2dc2869e7aeb8cf919490087113b838
SHA256

036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6
SHA512

fe48b376be766314b000fa557e4e3dac013b8cc8e82637df3fc9f442dd2f858998f894232fecd65e6e3baf0d2e1bb423c1a8515cda7a870c3baec77d207f4936
SSDEEP

12288:0K1t63MtALzhRqhiBsr8MxYXX9J56TWdgM9FlX:0K1t68tALzm6/MxsXwWdV

Score

10^/10

vidar dea7c01007a657ba0c601c941632f140 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

dea7c01007a657ba0c601c941632f140

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/3456-4-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-8-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-10-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-20-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-21-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-37-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral2/memory/3456-38-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file
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 4196 set thread context of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3456	RegAsm.exe
3456	RegAsm.exe
3456	RegAsm.exe
3456	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83
PID 4196 wrote to memory of 3456	4196	036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe	83

C:\Users\Admin\AppData\Local\Temp\036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe
"C:\Users\Admin\AppData\Local\Temp\036fc1946493ce413024f5b8094bddc99f2a22e0e31ff93b63015b020cbff0e6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4196
- 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:3456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

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/3456-21-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-4-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-8-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-10-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-20-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-22-0x000000001FCD0000-0x000000001FF2F000-memory.dmp

Filesize
2.4MB

Download
memory/3456-37-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/3456-38-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4196-1-0x0000000000DE0000-0x0000000000E48000-memory.dmp

Filesize
416KB

Download
memory/4196-2-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/4196-6-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/4196-13-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/4196-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download

Analysis

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