vidar | ae2be5054bfc203abf578a97ac7356b7245380de01b2bb8182dd21b83295e356

General

Target

04a4f32fae41.exe
Size

551KB
MD5

911b5946134122b09c15fd86f272fad9
SHA1

107db94e75cac1d58e28171e159a1e1fd300f4ca
SHA256

ae2be5054bfc203abf578a97ac7356b7245380de01b2bb8182dd21b83295e356
SHA512

7df124ca4cd183af04b74a84496c873e57f4a593596e9bb51f4ad9390e881a9b3a30cc3ae9fa70d4d2d855845a04e87eeb426d82fdef0a402e88e9148f2b58de
SSDEEP

12288:KLMb3AhDsvDjK8rIMVY+zQwR5npffj/k+XcUCLHLNAlksevM2iqPfVnVsP:KLOSun8wRvf789UwrN4IE27nV4

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 10 IoCs

stealer

resource	yara_rule
behavioral1/memory/2956-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-14-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-15-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-28-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2956-29-0x0000000000400000-0x0000000000676000-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 2684 set thread context of 2956	2684	04a4f32fae41.exe	30

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2064	2684	WerFault.exe	29

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	04a4f32fae41.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2956	MSBuild.exe
2956	MSBuild.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2956	2684	04a4f32fae41.exe	30
PID 2684 wrote to memory of 2064	2684	04a4f32fae41.exe	31
PID 2684 wrote to memory of 2064	2684	04a4f32fae41.exe	31
PID 2684 wrote to memory of 2064	2684	04a4f32fae41.exe	31
PID 2684 wrote to memory of 2064	2684	04a4f32fae41.exe	31

C:\Users\Admin\AppData\Local\Temp\04a4f32fae41.exe
"C:\Users\Admin\AppData\Local\Temp\04a4f32fae41.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- 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:2956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 52
  2⤵
  - Program crash
  PID:2064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2684-0-0x0000000000AB8000-0x0000000000ABA000-memory.dmp

Filesize
8KB

Download
memory/2956-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-14-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-15-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-17-0x000000001B430000-0x000000001B68F000-memory.dmp

Filesize
2.4MB

Download
memory/2956-28-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2956-29-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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