vidar | 919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2

General

Target

919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe
Size

559KB
MD5

b89c5e6bb878851f0d198de606fa57cd
SHA1

62fc1f008082a6f0451bc6461bbfd54bf43a9a46
SHA256

919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2
SHA512

a47f16a96885390975c7fd9704bda11c42d8fcdb170c3b1aeffbdcf76759721de78838e9feffed36a79699245d917b106212e882cdbdf5d9df1dab1d21045780
SSDEEP

12288:jSt9OYi8xZZjVIJf5YMQYMXiLJ96hS02lI2jcdvk1fOfPHEO:juTZB6Jfa1XiL+S02lI2jcJkFOnHt

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/2464-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-14-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-15-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-28-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2464-29-0x0000000000400000-0x0000000000676000-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 2600 set thread context of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.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
2296	2600	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	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.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 2 IoCs

pid	Process
2464	MSBuild.exe
2464	MSBuild.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2464	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	30
PID 2600 wrote to memory of 2296	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	31
PID 2600 wrote to memory of 2296	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	31
PID 2600 wrote to memory of 2296	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	31
PID 2600 wrote to memory of 2296	2600	919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe	31

C:\Users\Admin\AppData\Local\Temp\919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe
"C:\Users\Admin\AppData\Local\Temp\919ffab5c013f6e383c7d1e6a7df5e01b91a30a129c8131c1f8bf0a7203e81f2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- 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:2464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2600 -s 92
  2⤵
  - Program crash
  PID:2296

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/2464-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-29-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2464-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-14-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-15-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2464-18-0x000000001B7B0000-0x000000001BA0F000-memory.dmp

Filesize
2.4MB

Download
memory/2464-28-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2600-0-0x00000000000B8000-0x00000000000BA000-memory.dmp

Filesize
8KB

Download

Analysis

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