vidar | 232c890d5bb7ecf69fc171813e593992d3e49539f7c0e2e9fa83129f5c47553a

General

Target

file.exe
Size

404KB
MD5

ff9bb0ae2718e3f802bfec5d6acd824f
SHA1

8b31a4a11fd6d050cc86e05c71eb4bd6ba8afb43
SHA256

232c890d5bb7ecf69fc171813e593992d3e49539f7c0e2e9fa83129f5c47553a
SHA512

831873f83da54d2f3c29d1198bc293d45c71ad8ff7872aa47e4e147433ff9dbf92d4f1c5668b2ebbf88726c9fa845abe2b18d6d5afd8564510738be960f91711
SSDEEP

6144:ZNblT7AN3i/UCPUJmBCkftB1iOmzhYjST3GcMhu0V+GLHhLYvbgdVR1o:ZVlT0J6UCPUW1iFegWcmX+QHh0vbW/1o

Score

10^/10

vidar b74ef0d8ce56e494b0d83e1d5be9dbeb credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

b74ef0d8ce56e494b0d83e1d5be9dbeb

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 13 IoCs

stealer

resource	yara_rule
behavioral2/memory/2564-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-21-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-37-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-38-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-54-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-55-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-79-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-80-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-87-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-88-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Loads dropped DLL 2 IoCs

pid	Process
2564	RegAsm.exe
2564	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 3 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

Credentials from Web Browsers
T1555.003
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 4816 set thread context of 2564	4816	file.exe	85

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3952	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe
2564	RegAsm.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4816 wrote to memory of 4772	4816	file.exe	83
PID 4816 wrote to memory of 4772	4816	file.exe	83
PID 4816 wrote to memory of 4772	4816	file.exe	83
PID 4816 wrote to memory of 4852	4816	file.exe	84
PID 4816 wrote to memory of 4852	4816	file.exe	84
PID 4816 wrote to memory of 4852	4816	file.exe	84
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 4816 wrote to memory of 2564	4816	file.exe	85
PID 2564 wrote to memory of 2016	2564	RegAsm.exe	93
PID 2564 wrote to memory of 2016	2564	RegAsm.exe	93
PID 2564 wrote to memory of 2016	2564	RegAsm.exe	93
PID 2016 wrote to memory of 3952	2016	cmd.exe	95
PID 2016 wrote to memory of 3952	2016	cmd.exe	95
PID 2016 wrote to memory of 3952	2016	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4772
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4852
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\CAFHDBGHJKFI" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3952

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

3

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

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Downloads

C:\ProgramData\CAKKEGDGCG.exe

Filesize
146B

MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
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/2564-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-38-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-88-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-87-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-21-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-22-0x0000000022500000-0x000000002275F000-memory.dmp

Filesize
2.4MB

Download
memory/2564-37-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-80-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-54-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-55-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2564-79-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4816-2-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/4816-6-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/4816-13-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/4816-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/4816-1-0x00000000002B0000-0x0000000000318000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads