vidar | 896983dee48b90e2d2663255959e3018dcd0d0669cb5aa9dd972d98b0a72974e

General

Target

Install Update.exe
Size

678KB
MD5

fd57b4457b9c453bf563559c53b9071b
SHA1

08eb3a76af5c337b73f50efe5a27c43b68edce88
SHA256

995bf2a06730050f99f6e5ff53d641e1e98f022e7d7c376d91d65959aa79a70e
SHA512

ba9518440625fef53101440c976951b5c8e2b07f946a975da77b8a7ab2cbfc795cd20a264f61ff1fc4a7c0b77ea9b75ed8a9c9e69b9d22ae65d10163a510c5a7
SSDEEP

12288:PoZ5cyP2UluWW7hvraWyE/7bQGLnkQzeD6lHCMfm7HUb3s9a40:PoHhP2YW7hzak7bQ8HCM+4QI40

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/

Signatures

Detect Vidar Stealer 12 IoCs

stealer

resource	yara_rule
behavioral2/memory/4408-8-0x0000000010000000-0x000000001016D000-memory.dmp	family_vidar_v7
behavioral2/memory/4408-12-0x0000000010000000-0x000000001016D000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-14-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-18-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/4408-10-0x0000000010000000-0x000000001016D000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-9-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-30-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-31-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-32-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-48-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-64-0x0000000001300000-0x0000000001557000-memory.dmp	family_vidar_v7
behavioral2/memory/2404-66-0x0000000001300000-0x0000000001557000-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
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
Downloads MZ/PE file
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
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	Install Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Install Update.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	Install Update.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Install Update.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2404	Install Update.exe
2404	Install Update.exe
2404	Install Update.exe
2404	Install Update.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 2404	4408	Install Update.exe	91
PID 4408 wrote to memory of 2404	4408	Install Update.exe	91
PID 4408 wrote to memory of 2404	4408	Install Update.exe	91
PID 4408 wrote to memory of 2404	4408	Install Update.exe	91
PID 4408 wrote to memory of 2404	4408	Install Update.exe	91

C:\Users\Admin\AppData\Local\Temp\Install Update.exe
"C:\Users\Admin\AppData\Local\Temp\Install Update.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\Install Update.exe
  "C:\Users\Admin\AppData\Local\Temp\Install Update.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2404

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/2404-32-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-48-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-64-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-9-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-33-0x0000000022CD0000-0x0000000022F2F000-memory.dmp

Filesize
2.4MB

Download
memory/2404-14-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-18-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-31-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-66-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/2404-30-0x0000000001300000-0x0000000001557000-memory.dmp

Filesize
2.3MB

Download
memory/4408-17-0x0000000010009000-0x0000000010028000-memory.dmp

Filesize
124KB

Download
memory/4408-6-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-3-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-0-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-7-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-1-0x0000000010009000-0x0000000010028000-memory.dmp

Filesize
124KB

Download
memory/4408-12-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-8-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-4-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download
memory/4408-10-0x0000000010000000-0x000000001016D000-memory.dmp

Filesize
1.4MB

Download

Analysis

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