MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2. 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: 15


Intelligence 15 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2
SHA3-384 hash: 5fecf09ca24f5c35c28a5e63cbfc14d158322b3bbd9d7f4172c49235341a82a89610db3f14c3d3234f765e6dfba983b8
SHA1 hash: 86b0b5f9149e90f135e651df41d73b080b7ae128
MD5 hash: ea87109a7e8f2bbb9de995f762f8eb69
humanhash: fix-nitrogen-william-nineteen
File name:CaseArchiveViewer.exe
Download: download sample
Signature RustyStealer
Create hunting rule
File size:2'100'256 bytes
First seen:2026-02-23 21:21:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 445789d60a00354ec4681c093aff368f (1 x RustyStealer)
ssdeep 49152:MyBqdZgSW0GZiTS4WWPtWv4pxltpykY/GDJiNxdgZU:MyWGotG4pxlv9rF40U
TLSH T189A57D43F79481EAD49EC17883579632FA32B88D0620B6AF6BD45B303E66F506F0D719
TrID 45.6% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
18.0% (.EXE) Win64 Executable (generic) (6522/11/2)
13.9% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.6% (.ICL) Windows Icons Library (generic) (2059/9)
5.6% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon fcd6cac8c88eac8c (1 x RustyStealer)
Reporter SquiblydooBlog
Tags:exe RustyStealer signed

Code Signing Certificate

Organisation:Flagship Promotion s. r. o.
Issuer:SSL.com EV Code Signing Intermediate CA RSA R3
Algorithm:sha256WithRSAEncryption
Valid from:2026-01-22T16:27:49Z
Valid to:2027-01-22T16:27:49Z
Serial number: 22a5cf785d165b31ecfa4616e05c31c7
Cert Graveyard Blocklist:This certificate is on the Cert Graveyard blocklist
Thumbprint Algorithm:SHA256
Thumbprint: e82b4ad2861b5684b66014984661fb60e163a40202d828cf8edd9ca75bea27a3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
US US
Vendor Threat Intelligence
No detections
Malware family:
netsupport
Create hunting rule
ID:
1
File name:
CaseArchiveViewer.exe
Verdict:
Malicious activity
Analysis date:
2026-02-23 21:23:41 UTC
Tags:
anti-evasion evasion netsupport remote rmm-tool auto rat auto-sch auto-reg ip-check stealer stealc vidar tool xor-url generic golang
Link:
https://app.any.run/tasks/491ecec3-36cf-4834-9f36-da4feb7021e1

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/54340/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=699cc50f8fffa866e3b1489f
Tags:
vmdetect autorun netsup
Result
Verdict:
Malware
Maliciousness:
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm base64 cmd fingerprint lolbin mingw packed signed
Link:
https://www.filescan.io/uploads/699cc50d97feb4afd654e5c0/reports/46906505-cdb1-4dc2-8636-c5b09407b32b/overview
Verdict:
Suspicious
Labled as:
Win64/Agent_AGeneric.KUB trojan
Link:
https://www.hybrid-analysis.com/sample/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2
Verdict:
Malicious
File Type:
exe x64
Detections:
Trojan.Win64.Agentb.lhcc
Link:
https://opentip.kaspersky.com/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5cb85de2-7a86-40bc-9181-c8a489c9fde4
Score:
48%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2/
Verdict:
Malicious
Threat:
Family.NETSUPPORT
Link:
https://tip.neiki.dev/file/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2
Threat name:
Win64.Malware.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2026-02-22 00:11:08 UTC
File Type:
PE+ (Exe)
Extracted files:
12
AV detection:
12 of 24 (50.00%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qcm6qxckubpvb7zjtijq3qtkm62fv3krszuormpoc2joaa2bs3ba._file
Verdict:
malicious
Label(s):
netsupportmanagerrat
Create hunting rule
Similar samples:
error
RustyStealer
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:netsupport family:vidar defense_evasion discovery execution persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/260223-z7241ab12f/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Runs net.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Browser Information Discovery
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Windows directory
Enumerates processes with tasklist
Adds Run key to start application
Checks installed software on the system
Checks whether UAC is enabled
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Detects Vidar Stealer
NetSupport
Netsupport family
Vidar
Vidar family
Unpacked files
SH256 hash:
8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2
MD5 hash:
ea87109a7e8f2bbb9de995f762f8eb69
SHA1 hash:
86b0b5f9149e90f135e651df41d73b080b7ae128
Link:
https://www.unpac.me/results/b59f32ab-d320-47e2-be32-4c36eb065154/
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/8099e85c4aa05f50ff299a130dc26a67b45aed519668e8b1ee1692e0034196c2

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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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: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

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/54340/

Comments