vidar | cec9968a990c8bd808372b0d265ca2b37cb6145c79fdb86983bdfeeeb0735391

General

Target

S0FTWARE.exe
Size

18.0MB
MD5

a11bb3b18eba3f07561ca84c92c520cd
SHA1

c09ffdaa9b11747b07e88f669c70566a48134678
SHA256

7cfae4e35c049f4aad444cca84c5fcdd0f4da67b5a1846e821322a9f9757096b
SHA512

108e8153f76adfb5eb840a771b5af0c80396838363add14e05baf1b953ae19a684bed0648c2b4404d23d2a8f9a0ad2968b2f3e6d6a062c462a217a75dd9a85ac
SSDEEP

98304:NnBWTZ3ASa9wYqH4ALpq+yU0VhtDEH1EU/5VY2PJzuaIK:APa9wYqHZE40jtDEmU/5VPH

Score

10^/10

vidar 346a77fbabba142b23c256004b5a7c5d credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

346a77fbabba142b23c256004b5a7c5d

C2

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 14 IoCs

stealer

resource	yara_rule
behavioral1/memory/4832-8-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-11-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-12-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-21-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-22-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-38-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-39-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-55-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-56-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-63-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-79-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-80-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-90-0x0000000000B40000-0x0000000000DB5000-memory.dmp	family_vidar_v7
behavioral1/memory/4832-91-0x0000000000B40000-0x0000000000DB5000-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
4832	BitLockerToGo.exe
4832	BitLockerToGo.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 512 set thread context of 4832	512	S0FTWARE.exe	91

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 1 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	BitLockerToGo.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	BitLockerToGo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4832	BitLockerToGo.exe
4832	BitLockerToGo.exe
4832	BitLockerToGo.exe
4832	BitLockerToGo.exe
4832	BitLockerToGo.exe
4832	BitLockerToGo.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 512 wrote to memory of 4832	512	S0FTWARE.exe	91
PID 512 wrote to memory of 4832	512	S0FTWARE.exe	91
PID 512 wrote to memory of 4832	512	S0FTWARE.exe	91
PID 512 wrote to memory of 4832	512	S0FTWARE.exe	91
PID 512 wrote to memory of 4832	512	S0FTWARE.exe	91

C:\Users\Admin\AppData\Local\Temp\S0FTWARE.exe
"C:\Users\Admin\AppData\Local\Temp\S0FTWARE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:512
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4832

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/512-0-0x00007FF6053F0000-0x00007FF606690000-memory.dmp

Filesize
18.6MB

Download
memory/512-1-0x00007FF6053F0000-0x00007FF606690000-memory.dmp

Filesize
18.6MB

Download
memory/512-2-0x00007FF6053F0000-0x00007FF606690000-memory.dmp

Filesize
18.6MB

Download
memory/512-5-0x00007FF6053F0000-0x00007FF606690000-memory.dmp

Filesize
18.6MB

Download
memory/512-9-0x00007FF6053F0000-0x00007FF606690000-memory.dmp

Filesize
18.6MB

Download
memory/4832-23-0x0000000021F60000-0x00000000221BF000-memory.dmp

Filesize
2.4MB

Download
memory/4832-56-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-22-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-12-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-38-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-39-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-55-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-21-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-63-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-11-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-8-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-79-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-80-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-90-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download
memory/4832-91-0x0000000000B40000-0x0000000000DB5000-memory.dmp

Filesize
2.5MB

Download

Analysis

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