MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e. 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


ValleyRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e
SHA3-384 hash: 959f92c39375549531dc9fae6529a28bac7d81f9941f2d28631fc93a077125892dc4c9a20fa7ba4f3b275cc1359a413e
SHA1 hash: 112b3640655d4b223b4fa616e367527509c18fcc
MD5 hash: 586246a1b852db9a61c61aabb92e7dd9
humanhash: two-don-yellow-bulldog
File name:2026年·第一季度违纪违法人员通报信息pdf.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:4'332'544 bytes
First seen:2026-05-18 10:40:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f7f8c98719cb8e09bfd5fa0a42807105 (1 x RustyStealer, 1 x ValleyRAT)
ssdeep 98304:AXxtKzBodKdWv0QJsv6tWKFdu9CpiO4/:yykwQJsv6tWKFdu9Cpd
TLSH T1CC168D43B2B55264D5B7C03C86E38616E5327C468B246ADF1298A7592FB3BF05E3F318
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
Reporter Ling
Tags:exe SilverFox Trojan/SilverFox.bg[qtsc] ValleyRAT


Avatar
CNGaoLing
Trojan/SilverFox.bg[qtsc]
IOC (Domain ttsadnfgsdf.cn) (IP 18.167.247.169)

Intelligence

File Origin
# of uploads :
1
# of downloads :
107
Origin country :
US US
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/6506c505-0eb6-4e6e-a7b9-850d64d5dc1b/
Malware family:
n/a
ID:
1
File name:
2026年·第一季度违纪违法人员通报信息pdf.exe
Verdict:
Malicious activity
Analysis date:
2026-05-18 10:25:17 UTC
Tags:
generic rat valleyrat remote websocket
Link:
https://app.any.run/tasks/4c1b6318-207d-4727-a9ae-02d905e737b7

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/66271/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0aec1c3f97dd5ad5ac280b
Tags:
vmdetect emotet cobalt
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process from a recently created file
Moving a file to the %temp% directory
Searching for synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the system32 subdirectories
Creating a file in the Program Files subdirectories
Launching a process
Creating a process with a hidden window
Сreating synchronization primitives
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm base64 crypto evasive fingerprint hacktool lolbin reconnaissance rust xwizard
Link:
https://www.filescan.io/uploads/6a0aeca0056ea44c4533118b/reports/dd4741d4-8208-402d-ab11-1f94868a5c20/overview
Verdict:
Malicious
Labled as:
Tedy.Generic
Link:
https://www.hybrid-analysis.com/sample/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-05-18T07:26:00Z UTC
Last seen:
2026-05-19T19:30:00Z UTC
Hits:
~100
Detections:
Trojan.Win64.Zenpak.sb Trojan-Downloader.Agent.HTTP.C&C Trojan.Win64.Zenpak.fcx
Link:
https://opentip.kaspersky.com/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5affac79-1d82-4b8c-a7c2-814b98c2908d
Score:
68%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/586246a1b852db9a61c61aabb92e7dd9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e/
Verdict:
Malicious
Threat:
Trojan.Win64.Zenpak
Link:
https://tip.neiki.dev/file/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e
Threat name:
Win64.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-05-18 10:38:22 UTC
File Type:
PE+ (Exe)
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wozshctbbizbinhe6ozb7tmy57fhujlj3zcxn3avoaxr5p4bb57a._file
Gathering data
Unpacked files
SH256 hash:
b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e
MD5 hash:
586246a1b852db9a61c61aabb92e7dd9
SHA1 hash:
112b3640655d4b223b4fa616e367527509c18fcc
Link:
https://www.unpac.me/results/7825d29a-e78f-498e-bde4-4ab9a6b3247c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3b3238a610a/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/b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e

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:Check_VBox_Guest_Additions
Create hunting rule
Rule name:Check_VmTools
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_References_SecTools
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many IR and analysis tools
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:ProgramLanguage_Rust
Create hunting rule
Author:albertzsigovits
Description:Application written in Rust programming language
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:SUSP_Websites
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the reference of suspicious sites that might be used to download further malware
Rule name:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
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.

Web download

ValleyRAT

Executable exe b3b3238a610a321434e4f3b21fcd98efca7a2569de4576ec15702f1ebf810f7e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/66271/

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