MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6. 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


RustyStealer


Vendor detections: 12


Intelligence 12 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6
SHA3-384 hash: ff846e3d9235331178ba98dfbc512e1e94aca146b9c5645a7505b7e12f07f1801e3f5f37de5eae2e46836717dd54f85e
SHA1 hash: d34773afa2b30840947fbe075f5ed9dd9b2fad20
MD5 hash: 2f57c4da2de768e61147fdc357855a21
humanhash: autumn-california-fix-red
File name:UltraViewer.exe
Download: download sample
Signature RustyStealer
Create hunting rule
File size:6'759'904 bytes
First seen:2025-09-22 11:57:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a8ebd0d0bf42e700555831b3ceed18e4 (2 x RustyStealer)
ssdeep 49152:1IJixbKNhhwH+ZxIl3cj3+g4UwZL+ms/H8ukwzhpYpx5jHzGalNm0pFx0E+Tni4U:1IbPlX/c8YFCoCKMBn+/+8pl
TLSH T1F0664A17F26284E8C56AC074836A6232FA31BC8D47347AFB57D09B212F65BD06B3DB54
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter smica83
Tags:exe RustyStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
113
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
https://wsbcard.s3.dualstack.us-east-1.amazonaws.com/test/2557.KV6-TTKQ.zip
Verdict:
Malicious activity
Analysis date:
2025-09-22 10:07:37 UTC
Tags:
exploit arch-exec susp-clipboard clickfix susp-lnk discord
Link:
https://app.any.run/tasks/24f438ff-951d-45bf-b09e-f75e8e84d01d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/28557/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d139dc72187e372c385846
Tags:
vmdetect
Result
Verdict:
Clean
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm anti-vm expand invalid-signature lolbin microsoft_visual_cc obfuscated rust signed threat
Link:
https://www.filescan.io/uploads/68d139dfdc1cad370d1e64fd/reports/dd3e6f00-f76b-45b8-8ab7-4eb04ea6dd14/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-09-22T01:51:00Z UTC
Last seen:
2025-09-22T01:51:00Z UTC
Hits:
~100
Detections:
VHO:Trojan.Win64.Agentb.gen Trojan.Win64.Agentb.leha
Link:
https://opentip.kaspersky.com/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/feec7fd7-2e7a-4903-afc5-6ed78596b92e
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
52 / 100
Link:
https://www.joesandbox.com/analysis/1781923
Signature
AI detected suspicious PE digital signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Score:
14%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/2f57c4da2de768e61147fdc357855a21
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6/
Verdict:
Malicious
Threat:
Win64.Malware.Generic
Link:
https://tip.neiki.dev/file/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-09-22 11:02:46 UTC
File Type:
PE+ (Exe)
Extracted files:
20
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jvptnegn76caz25hbqnrmmgovxinhxhshshavxick7f2f4lg6xta._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://tria.ge/reports/250922-n5aq7a1xbw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Legitimate hosting services abused for malware hosting/C2
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/aee4efa7-7723-4d57-ab1c-12fe78f3aecc
Unpacked files
SH256 hash:
4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6
MD5 hash:
2f57c4da2de768e61147fdc357855a21
SHA1 hash:
d34773afa2b30840947fbe075f5ed9dd9b2fad20
Link:
https://www.unpac.me/results/544e6917-dfc5-4a8e-847e-9b58a2a9bbaf/
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/4d5f3690cdff840ceba70c1b1630ceadd0d3dcf23c8e0add0257cba2f166f5e6

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:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dsc
Create hunting rule
Author:Aaron DeVera
Description:Discord domains
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_VM_Evasion_MACAddrComb
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing virtualization MAC addresses
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:ProgramLanguage_Rust
Create hunting rule
Author:albertzsigovits
Description:Application written in Rust programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/28557/

Comments