MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Vidar


Vendor detections: 17


Intelligence 17 IOCs YARA 9 File information Comments
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SHA256 hash: b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad
SHA3-384 hash: 6728af97759bf46cdd830243b0f824a6aed0ae4dedf50b0ccdcb08154fae691d489a7443c00c3a3fd20537a994178457
SHA1 hash: 0e56064bfe685e7a3e10f89c6aa9886cc1417e9d
MD5 hash: 744dad327f45b0839b0150d45e6b1f9f
humanhash: tennessee-king-mountain-mango
File name:file
Download: download sample
Signature Vidar
Create hunting rule
File size:259'624 bytes
First seen:2024-08-30 15:27:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:zik8TD3usJ7mvwYI9WEyxG/h/y+dObHmjxOREO:z4n+Oae2op3qAcEO
Threatray 5 similar samples on MalwareBazaar
TLSH T1EA44E00A36C44761C56645B5C0E3DA2643F3B9A736B3D3893E8469EA4F037C1AC4AF8D
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter Bitsight
Tags:exe vidar


Avatar
Bitsight
url: http://147.45.44.104/prog/66d1e3c3c7dc6_vregs.exe#space

Intelligence

File Origin
# of uploads :
1
# of downloads :
421
Origin country :
US US
Vendor Threat Intelligence
Malware family:
vidar
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-08-30 15:28:19 UTC
Tags:
vidar
Link:
https://app.any.run/tasks/41ce1be2-bd23-4c0c-9b94-0afc517c5af6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Injector.3682.18088.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d1e50754dfe8b6d5210907
Tags:
Encryption Static
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Creating a file in the %temp% directory
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Running batch commands
Creating a process with a hidden window
Forced shutdown of a system process
Connection attempt to an infection source
Unauthorized injection to a system process
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
net_reactor overlay packed packed
Link:
https://www.filescan.io/uploads/66d1e505f2069f76774c9c2f/reports/7c55787e-ea17-409c-b251-f82dddc48647/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b975985e-1b0e-419f-91eb-59d6141f9a12
Result
Threat name:
LummaC, PureLog Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1501882
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
LummaC encrypted strings found
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Suricata IDS alerts for network traffic
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected LummaC Stealer
Yara detected Powershell download and execute
Yara detected PureLog Stealer
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1501882 Sample: file.exe Startdate: 30/08/2024 Architecture: WINDOWS Score: 100 58 traineiwnqo.shop 2->58 60 stadiatechnologies.com 2->60 62 locatedblsoqp.shop 2->62 84 Suricata IDS alerts for network traffic 2->84 86 Found malware configuration 2->86 88 Malicious sample detected (through community Yara rule) 2->88 90 13 other signatures 2->90 10 file.exe 2 2->10         started        signatures3 process4 file5 48 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 10->48 dropped 104 Found many strings related to Crypto-Wallets (likely being stolen) 10->104 106 Contains functionality to inject code into remote processes 10->106 108 Writes to foreign memory regions 10->108 110 2 other signatures 10->110 14 RegAsm.exe 1 323 10->14         started        19 RegAsm.exe 10->19         started        21 conhost.exe 10->21         started        signatures6 process7 dnsIp8 64 stadiatechnologies.com 95.164.119.162, 49726, 80 VAKPoltavaUkraineUA Gibraltar 14->64 66 147.45.44.104, 49723, 80 FREE-NET-ASFREEnetEU Russian Federation 14->66 68 147.45.68.138, 49718, 49735, 80 FREE-NET-ASFREEnetEU Russian Federation 14->68 50 C:\Users\user\AppData\Local\...\sql[1].dll, PE32 14->50 dropped 52 C:\Users\user\AppData\...\softokn3[1].dll, PE32 14->52 dropped 54 C:\Users\user\AppData\...\freebl3[1].dll, PE32 14->54 dropped 56 14 other files (10 malicious) 14->56 dropped 74 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->74 76 Found many strings related to Crypto-Wallets (likely being stolen) 14->76 78 Tries to harvest and steal ftp login credentials 14->78 82 3 other signatures 14->82 23 IIJEBAECGC.exe 2 14->23         started        26 BAAEHDBFID.exe 2 14->26         started        28 cmd.exe 1 14->28         started        80 Searches for specific processes (likely to inject) 19->80 file9 signatures10 process11 signatures12 94 Machine Learning detection for dropped file 23->94 96 Writes to foreign memory regions 23->96 98 Allocates memory in foreign processes 23->98 100 LummaC encrypted strings found 23->100 30 RegAsm.exe 23->30         started        33 conhost.exe 23->33         started        102 Injects a PE file into a foreign processes 26->102 35 RegAsm.exe 210 26->35         started        38 conhost.exe 26->38         started        40 RegAsm.exe 26->40         started        42 conhost.exe 28->42         started        44 timeout.exe 28->44         started        process13 dnsIp14 70 locatedblsoqp.shop 188.114.96.3, 443, 49724, 49725 CLOUDFLARENETUS European Union 30->70 72 traineiwnqo.shop 188.114.97.3, 443, 49727, 49728 CLOUDFLARENETUS European Union 30->72 46 WerFault.exe 30->46         started        92 Tries to harvest and steal browser information (history, passwords, etc) 35->92 signatures15 process16
Score:
91%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2024-08-30 15:28:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xa7v5igz7pauddwpx6oqib6p3wz4vbn2thuwprp6imp3w23ghowq._file
Verdict:
suspicious
Similar samples:
261844b03152e938733e6cabfe09e1cc3eca03c905a9e4509c2239291b7306f9
Vidar
4350404c1f6e124b7abe9dea7a02946d8870f53a14585cd08caa81a8fd387ccd
Vidar
78a2c197dcb65883cebc38339dd08b21f6dffb020d7cbb33a734ed969b1a5fb3
Vidar
bd68792e8bdc0c4f7733a20a823970ad42f7ed1e702ac5e72e2bdd9b80cab862
Vidar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:1f3c236c672ff2ffe017b396f834c66e credential_access discovery spyware stealer
Link:
https://tria.ge/reports/240830-swbdks1dpg/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Browser Information Discovery
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks installed software on the system
Reads user/profile data of web browsers
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
Detect Vidar Stealer
Vidar
Malware Config
C2 Extraction:
http://147.45.68.138:80
https://steamcommunity.com/profiles/76561199761128941
https://t.me/iyigunl
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ff1fe0bb-8b0a-4735-b909-da44d4b5c9a9
Unpacked files
SH256 hash:
30a601e90916da90110ed10156c05cdec749bf9a239f89a30719083210cd31dd
MD5 hash:
8567ec2a97099f53cbb031e6cd2dfd64
SHA1 hash:
6e0bf3252eac3431024f30747b534adcfac9a6a9
Detections:
VidarStealer
Create hunting rule
Link:
https://www.unpac.me/results/56ea4dfc-93fc-476e-952c-37525cfe887c/
Parent samples :
5923793c30acf9026a872fcb8ce04a671fa194bb4f73eef165d687ae97683047
b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad
SH256 hash:
0ab41930f0a18d7629031bf5cd9a8c7090c13983c1d7567b9018185f0fa18f0d
MD5 hash:
2890a00ef6943ed98e2b7c6e3e49ae1c
SHA1 hash:
9072a751e68fe39222aebc87ffb898a423310ce9
Link:
https://www.unpac.me/results/56ea4dfc-93fc-476e-952c-37525cfe887c/
SH256 hash:
b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad
MD5 hash:
744dad327f45b0839b0150d45e6b1f9f
SHA1 hash:
0e56064bfe685e7a3e10f89c6aa9886cc1417e9d
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/56ea4dfc-93fc-476e-952c-37525cfe887c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b83f5ea0d9fb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Stealc
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Vidar

Executable exe b83f5ea0d9fbc1418ecfbf9d0407cfddb3ca85ba99e967c5fe431fbb6b663bad

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3135814/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

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