vidar | abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5

General

Target

abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe
Size

283KB
MD5

8c4d2ee7feb092bad21213e862b47bba
SHA1

9684ace226b4f521053c53a9ca1106b6a767bebb
SHA256

abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5
SHA512

ce192613090bb3d7525db3c961fe1efe46912a796b9c488abef304fec52318081bfec2a0e64177fcd2ce712986689c15ed5042c5769291a264d2f5baae77e53b
SSDEEP

6144:IxkE0dfDR38ls2W6H4k2mBrlaKXIGYOx8NfHfJv8ze77cNEO:UkPfDR38yuHLhc7NfHfJv8EcNEO

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/fneogr

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 13 IoCs

stealer

resource	yara_rule
behavioral2/memory/1752-3-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-6-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-12-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-13-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-30-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-31-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-47-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-48-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-78-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-85-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-86-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/1752-87-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1752	RegAsm.exe
1752	RegAsm.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1752	RegAsm.exe
1752	RegAsm.exe
1752	RegAsm.exe
1752	RegAsm.exe
1752	RegAsm.exe
1752	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86
PID 2436 wrote to memory of 1752	2436	abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe	86

C:\Users\Admin\AppData\Local\Temp\abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe
"C:\Users\Admin\AppData\Local\Temp\abca40b38e430b2eca2c726dfbda0179abc347028f401bb3ddc143c293e218b5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

4

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

3

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/1752-15-0x00000000220F0000-0x000000002234F000-memory.dmp

Filesize
2.4MB

Download
memory/1752-47-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-6-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-87-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-12-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-13-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-86-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-30-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-31-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-48-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-3-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-85-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/1752-78-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2436-1-0x0000000000CD0000-0x0000000000D1A000-memory.dmp

Filesize
296KB

Download
memory/2436-0-0x000000007493E000-0x000000007493F000-memory.dmp

Filesize
4KB

Download
memory/2436-11-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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