vidar | 671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b

General

Target

671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe
Size

580KB
MD5

6d61afb7164620cc4dd1d2999a06af7a
SHA1

35d50057bbc307dfc1f0aecca33d4a2734001eb4
SHA256

671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b
SHA512

e5b59d59c5eacd293171a06bb842c4e3d0dbbbee354948884b613e88b6804d1b1857dde880bf85bd1b13a911982ef928b547d7931fa29af2d20e84c3a59c94fa
SSDEEP

12288:5K7qQnYbvtNPtv5uR1T3hxL3hnfWv/+u1fhVJ6fOpNarKa:5KtnYj/tv5ATh5hnfg/5fhVgWHAr

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

C2

http://proxy.johnmccrea.com/

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/544-2-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-18-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/544-19-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4672 set thread context of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86

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	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
544	MSBuild.exe
544	MSBuild.exe
544	MSBuild.exe
544	MSBuild.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4672 wrote to memory of 1124	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	83
PID 4672 wrote to memory of 1124	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	83
PID 4672 wrote to memory of 1124	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	83
PID 4672 wrote to memory of 4188	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	84
PID 4672 wrote to memory of 4188	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	84
PID 4672 wrote to memory of 4188	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	84
PID 4672 wrote to memory of 1676	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	85
PID 4672 wrote to memory of 1676	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	85
PID 4672 wrote to memory of 1676	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	85
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86
PID 4672 wrote to memory of 544	4672	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	86

C:\Users\Admin\AppData\Local\Temp\671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe
"C:\Users\Admin\AppData\Local\Temp\671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4672
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:1124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:4188
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:1676
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/544-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-10-0x000000001D9D0000-0x000000001DC2F000-memory.dmp

Filesize
2.4MB

Download
memory/544-18-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/544-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4672-0-0x00000000007EC000-0x00000000007EE000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing