vidar | 9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293d

General

Target

9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe
Size

551KB
MD5

af97b6bc8d46742836b38fc37c2de2e0
SHA1

5736933d95d9070bf2ba5b7eb46b782e4f21390e
SHA256

9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293d
SHA512

f9abed02605e7ea8ab578ab99262c11351f61a4cf82ad206a29924aaf7df0e6192c3139d9cedbb793803f66ff68d06b2940518ec2d2485067ffdf692b507e284
SSDEEP

12288:fKzXYJTVvvjtfDGlUcehFBNk9QACS4Wp51Q11jDE4wBlsP:fsCV5ayJTHkKA9jp5UlwBI

Score

10^/10

vidar credential_access 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/2548-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2548-11-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar family
vidar
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2320 set thread context of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2024	2320	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 4 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	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4944	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2548	MSBuild.exe
2548	MSBuild.exe
2548	MSBuild.exe
2548	MSBuild.exe
2548	MSBuild.exe
2548	MSBuild.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2320 wrote to memory of 2548	2320	9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe	83
PID 2548 wrote to memory of 4088	2548	MSBuild.exe	97
PID 2548 wrote to memory of 4088	2548	MSBuild.exe	97
PID 2548 wrote to memory of 4088	2548	MSBuild.exe	97
PID 4088 wrote to memory of 4944	4088	cmd.exe	99
PID 4088 wrote to memory of 4944	4088	cmd.exe	99
PID 4088 wrote to memory of 4944	4088	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe
"C:\Users\Admin\AppData\Local\Temp\9e5882a6f91108bb85b72efd662b3d57f168b8f8e061d8cb837b7d7eb68e293dN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- 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
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\ECAEGHIJEHJD" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4088
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 256
  2⤵
  - Program crash
  PID:2024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2320 -ip 2320
1⤵
PID:3652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

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/2320-0-0x0000000000548000-0x000000000054A000-memory.dmp

Filesize
8KB

Download
memory/2548-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2548-11-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing