vidar | eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf

General

Target

eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe
Size

598KB
MD5

881a5e66017f5b48400ca06b8541e317
SHA1

ec432c77fdfafb5fd6765af83b3582cb40fa4906
SHA256

eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf
SHA512

5c716961acdbc0673b3a8fb2d6b2e3d9cd62be1df52e84514f7e94615893fbee817bdc75a1bef4442d3f1bf0291d88797b5ab116816bcf5e32150eec74f2aa5e
SSDEEP

12288:r8yf0yrFNqYcN6N+dnqISzf1WIPaacNOPy0uXJcajdKbzZqRWlPlj8j264fPsETt:r8EfrFqaIqvf1jIWDuHg7IRdmt

Score

10^/10

vidar 4a5bc8b73e12425adc3c399da8136891 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Botnet

4a5bc8b73e12425adc3c399da8136891

C2

https://t.me/maslengdsa

https://steamcommunity.com/profiles/76561199786602107

https://t.me/lpnjoke

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 16 IoCs

stealer

resource	yara_rule
behavioral2/memory/3296-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-18-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-19-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-27-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-28-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-44-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-45-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-57-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-74-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-75-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-82-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/3296-83-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

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

Loads dropped DLL 2 IoCs

pid	Process
3296	MSBuild.exe
3296	MSBuild.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 460 set thread context of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4660	460	WerFault.exe	82

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	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.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 6 IoCs

pid	Process
3296	MSBuild.exe
3296	MSBuild.exe
3296	MSBuild.exe
3296	MSBuild.exe
3296	MSBuild.exe
3296	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3296	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84
PID 460 wrote to memory of 3296	460	eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe	84

C:\Users\Admin\AppData\Local\Temp\eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe
"C:\Users\Admin\AppData\Local\Temp\eac4a4c26502159bb5547be88595ed2cb526cf8af62b91c59d420698253919bf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:460
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 460 -s 292
  2⤵
  - Program crash
  PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 460 -ip 460
1⤵
PID:3596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

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

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/460-0-0x000000000080F000-0x0000000000811000-memory.dmp

Filesize
8KB

Download
memory/3296-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-45-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-10-0x0000000022400000-0x000000002265F000-memory.dmp

Filesize
2.4MB

Download
memory/3296-18-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-27-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-28-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-44-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-57-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-74-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-75-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-82-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/3296-83-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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