MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
SHA3-384 hash: b5bb986be51360565d31f3c327fb5b1077e01f15c216d0c6bad6d21b19dae9dd26f73ef2b368baeac4418a4e19b514c8
SHA1 hash: 5a68f160bde8531f0b38ed8f9c6b19b7e615a905
MD5 hash: 45c0d8bedd6bff145cbe1c3064f2cf56
humanhash: video-jupiter-music-carolina
File name:file
Download: download sample
Signature Vidar
Create hunting rule
File size:11'649'536 bytes
First seen:2024-08-09 09:00:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 196608:uq5Uz55kDba3q4c1X2usHfdV5bvMzeO/FmwuAf0+OTZ5l3:ur55kPa3qEbHfdVRvI50wnVOj
Threatray 2 similar samples on MalwareBazaar
TLSH T12FC6DF027E98DE12D0295637DDEF403417FCED846753EA6A7D99B3AC64023660E0E2DE
TrID 34.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
27.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
14.7% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
6.1% (.SCR) Windows screen saver (13097/50/3)
4.9% (.EXE) Win64 Executable (generic) (10523/12/4)
File icon (PE):PE icon
dhash icon c141415559591171 (1 x Vidar)
Reporter Bitsight
Tags:exe vidar


Avatar
Bitsight
url: http://147.45.44.104/prog/66b5d9d3adbaa_defaultr.exe#space

Intelligence

File Origin
# of uploads :
1
# of downloads :
624
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-08-09 09:01:10 UTC
Tags:
stealer
Link:
https://app.any.run/tasks/ed0a67fb-baed-43e2-9694-ecc9532dc3d4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Malwarex-10033462-0
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66b5dad2aa5b40be0a9fe873
Tags:
Banker Network Stealth
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
blackworm njrat packed worm
Link:
https://www.filescan.io/uploads/66b5dad6702ad2411b1eda39/reports/9d4c0ee9-4c69-4be2-b42b-e0adff8f86ce/overview
Verdict:
Malicious
Labled as:
MSIL_Kryptik.LEN.gen
Link:
https://www.hybrid-analysis.com/sample/b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
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:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4407cf12-d2da-4d94-b6cf-45d32c6b6a41
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1490498
Signature
.NET source code contains method to dynamically call methods (often used by packers)
AI detected suspicious sample
Allocates memory in foreign processes
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Searches for specific processes (likely to inject)
Sigma detected: Silenttrinity Stager Msbuild Activity
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 AntiVM3
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1490498 Sample: file.exe Startdate: 09/08/2024 Architecture: WINDOWS Score: 100 31 steamcommunity.com 2->31 33 fp2e7a.wpc.phicdn.net 2->33 35 2 other IPs or domains 2->35 43 Multi AV Scanner detection for domain / URL 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 8 other signatures 2->49 9 file.exe 3 2->9         started        signatures3 process4 signatures5 51 Found many strings related to Crypto-Wallets (likely being stolen) 9->51 53 Writes to foreign memory regions 9->53 55 Allocates memory in foreign processes 9->55 57 Injects a PE file into a foreign processes 9->57 12 MSBuild.exe 1 32 9->12         started        process6 dnsIp7 37 steamcommunity.com 23.197.127.21, 443, 49730 AKAMAI-ASN1EU United States 12->37 39 116.203.5.69, 443, 49731, 49732 HETZNER-ASDE Germany 12->39 41 arpdabl.zapto.org 38.180.132.96, 49753, 80 COGENT-174US United States 12->41 23 C:\ProgramData\...\vcruntime140.dll, PE32 12->23 dropped 25 C:\ProgramData\KFIJEGCBGIDG\softokn3.dll, PE32 12->25 dropped 27 C:\ProgramData\KFIJEGCBGIDG\nss3.dll, PE32 12->27 dropped 29 3 other files (none is malicious) 12->29 dropped 59 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->59 61 Found many strings related to Crypto-Wallets (likely being stolen) 12->61 63 Contains functionality to inject code into remote processes 12->63 65 5 other signatures 12->65 17 cmd.exe 1 12->17         started        file8 signatures9 process10 process11 19 conhost.exe 17->19         started        21 timeout.exe 1 17->21         started       
Score:
90%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39/
Threat name:
Win32.Trojan.RemLoader
Create hunting rule
Status:
Malicious
First seen:
2024-08-09 09:01:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcs67hvj7jmisb5bs7nvlr2dkwkgagikuwfse7nrbvv6oxml7y4q._file
Verdict:
malicious
Similar samples:
6ae1ebeb88e73be3fd5141deb9e85ed84203af1ef50cea7f2efc6be74816e52e
Vidar
b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
Vidar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar credential_access discovery spyware stealer
Link:
https://tria.ge/reports/240809-k5ehlasgld/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Unsecured Credentials: Credentials In Files
Credentials from Password Stores: Credentials from Web Browsers
Detect Vidar Stealer
Vidar
Malware Config
C2 Extraction:
https://steamcommunity.com/profiles/76561199751190313
https://t.me/pech0nk
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/30005051-8988-4038-bcf3-74b4fd6ba69c
Unpacked files
SH256 hash:
89cbae6390ba1b2a5f1071c5013fe13c9dd884682cc04eb040cbb635c111043f
MD5 hash:
ca146b403257d597f1523284abfd4314
SHA1 hash:
f5b6893888fcd85b5d99bdcb0e5b646ef61332c9
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
81cadb6a9546328647f2fbd1713fcf8ee49921c6a0c7b155f6d287acddab5fd7
MD5 hash:
eb029ab5c2f8de328736c53dc3c7df47
SHA1 hash:
e05c4fba0236fee2516bf53a287e41e0e97a0ee5
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
Parent samples :
12df075fcaec366639ab37f203aa412540f351ee17e7f126a4a126e7a61c2a9b
b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
e603e36cae3f0fa9badbeaeff8fb0becb1ed444776892db76cd8d219e2ba92bd
SH256 hash:
8588aff96413c522fc2b3db70066282c7f9c97b28fe7e7235aca9afe9073ce16
MD5 hash:
f88f0e59cc59595359b025c7c7ade091
SHA1 hash:
8c9fd14c728bd81e1a328ae918ce889e58e6f3af
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
691ed74e60f820f5b1a66d739ff074503bd16f1b7743792bcf4840e9abbc8d2a
MD5 hash:
efa06cce09748a48345a33e7b79c588d
SHA1 hash:
8c7e2a319f1d097fbb378ddb2ce437c15778615d
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
ad7a3bc09cd4279b266af8222976109c740bcc6972ab7c072a1f7a40569d9686
MD5 hash:
719fe93e308949475751c2eb900446e0
SHA1 hash:
715e880285a5a5d2c3faf537fc02674055ef08ab
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
ad08ce6288834c4a6715b3e3e2c961a6b04170e5d062aa32a2a6cb3d7224f5e1
MD5 hash:
95df63519d5303468fb19ab90e597c6e
SHA1 hash:
4dddb178309d0a3a95a02c4da4b614d352ead483
Detections:
VidarStealer
Create hunting rule
win_stealc_a0
Create hunting rule
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
Parent samples :
12df075fcaec366639ab37f203aa412540f351ee17e7f126a4a126e7a61c2a9b
b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
e603e36cae3f0fa9badbeaeff8fb0becb1ed444776892db76cd8d219e2ba92bd
c955b3b1da4142b077f791749db32f9a871e62c503b421dc8fc061ac3ad71025
SH256 hash:
0ab41930f0a18d7629031bf5cd9a8c7090c13983c1d7567b9018185f0fa18f0d
MD5 hash:
2890a00ef6943ed98e2b7c6e3e49ae1c
SHA1 hash:
9072a751e68fe39222aebc87ffb898a423310ce9
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a
MD5 hash:
4e52d739c324db8225bd9ab2695f262f
SHA1 hash:
71c3da43dc5a0d2a1941e874a6d015a071783889
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 hash:
1cc453cdf74f31e4d913ff9c10acdde2
SHA1 hash:
6e85eae544d6e965f15fa5c39700fa7202f3aafe
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 hash:
c8fd9be83bc728cc04beffafc2907fe9
SHA1 hash:
95ab9f701e0024cedfbd312bcfe4e726744c4f2e
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
edd043f2005dbd5902fc421eabb9472a7266950c5cbaca34e2d590b17d12f5fa
MD5 hash:
550686c0ee48c386dfcb40199bd076ac
SHA1 hash:
ee5134da4d3efcb466081fb6197be5e12a5b22ab
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
SH256 hash:
b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39
MD5 hash:
45c0d8bedd6bff145cbe1c3064f2cf56
SHA1 hash:
5a68f160bde8531f0b38ed8f9c6b19b7e615a905
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/33ca36b7-6d94-4c44-ba7b-692aa6e789bc/
Malware family:
BlackWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8a5ef9ea9fa/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39

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:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
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 b8a5ef9ea9fa588907a197db55c743559460190aa58b227db10d6be75d8bfe39

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3097309/
  
URLhaus
https://urlhaus.abuse.ch/url/3097406/

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 (HIGH_ENTROPY_VA)high

Comments