MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d. 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: 12


Intelligence 12 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d
SHA3-384 hash: dfadb367db4e99a9878db6d0548cd5d2150d1bdc6d28953a2744f7aecf636eab12bd819e282456319fffa0da3e2b5555
SHA1 hash: abc39fdcae552935b7f5715ab52fe61dd335864a
MD5 hash: 1aad15cd0b16884ff5fcbae5d3efa652
humanhash: finch-victor-uranus-queen
File name:69c64a451eef3_doubao.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:26'078'208 bytes
First seen:2026-03-30 00:42:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f2d5024be2da1cb1960c1e79d9066478 (1 x ValleyRAT)
ssdeep 393216:1w7BBazMVR/9yllKYVE1C3d8S7dUpuqh3SkdvBhjP8X5jN:/Tqb78
TLSH T11E477D4A72B811A4D17FC07CCA578607EBF1384903B1A7DF16A196EA2F23BE1653B351
TrID 48.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
19.1% (.EXE) Win64 Executable (generic) (6522/11/2)
14.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.9% (.EXE) OS/2 Executable (generic) (2029/13)
5.8% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon 00b28eabababa600 (5 x RemcosRAT, 4 x AsyncRAT, 4 x ValleyRAT)
Reporter Ling
Tags:exe SilverFox Trojan:Win64/Malgent!MSR ValleyRAT


Avatar
CNGaoLing
This sample has been reviewed by Microsoft researchers and determined to be malware. (Trojan:Win64/Malgent!MSR)

SilverFox IOC (IP 180.178.56.230)

Intelligence

File Origin
# of uploads :
1
# of downloads :
137
Origin country :
US US
Vendor Threat Intelligence
Gathering data
Malware family:
n/a
ID:
1
File name:
69c64a451eef3_doubao.exe
Verdict:
Malicious activity
Analysis date:
2026-03-30 00:45:34 UTC
Tags:
websocket valleyrat rat silverfox winos
Link:
https://app.any.run/tasks/1e9a3d29-95c7-4e65-a97e-d41fcb41d96c

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/59707/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69c9c72c3a18a6e1ddefa909
Tags:
emotet virus shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sending an HTTP GET request
Creating a file in the system32 subdirectories
Running batch commands
Creating a process with a hidden window
Creating a file
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Creating a window
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm crypto installer-heuristic microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/69c9c724972c219c8d718374/reports/61e2fcb8-b16a-4f67-9fb3-61b3a4c43e58/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-03-29T12:06:00Z UTC
Last seen:
2026-03-31T10:31:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.Waldek.sb Trojan.Win32.PoolInject.sba Trojan.Win32.Inject.sb HEUR:Trojan.Win64.DLLHijack.gen Backdoor.Win32.Androm.sb Trojan-Spy.Win32.KeyLogger.sba Trojan.Win32.PoolInject.emv Trojan.Win32.Agent.sb Trojan-Dropper.Win32.Injector.sb Trojan-Spy.Win32.Stealer.sb Trojan.Win64.Zenpak.sb Trojan.Win32.Zapchast.boxg
Link:
https://opentip.kaspersky.com/4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
Executable LNK PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/1aad15cd0b16884ff5fcbae5d3efa652
Gathering data
Verdict:
Malicious
Threat:
Family.VALLEYRAT
Link:
https://tip.neiki.dev/file/4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d
Threat name:
Win64.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-03-29 17:51:07 UTC
File Type:
PE+ (Exe)
Extracted files:
75
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jp4ha7xd5lqbdyrz3ss7pxi4phtmkzcuf472sqt6gzl3gxcxrsoq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion
Link:
https://tria.ge/reports/260330-a22hvafs2l/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Delays execution with timeout.exe
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4bf8707ee3ea/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/4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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:DebuggerException__SetConsoleCtrl
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:Detect_all_IPv6_variants
Create hunting rule
Author:Bierchermuesli
Description:Generic IPv6 catcher
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
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:skip20_sqllang_hook
Create hunting rule
Author:Mathieu Tartare <mathieu.tartare@eset.com>
Description:YARA rule to detect if a sqllang.dll version is targeted by skip-2.0. Each byte pattern corresponds to a function hooked by skip-2.0. If $1_0 or $1_1 match, it is probably targeted as it corresponds to the hook responsible for bypassing the authentication.
Reference:https://www.welivesecurity.com/
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
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
Rule name:WHIRLPOOL_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for WhirlPool constants

File information

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

Web download

ValleyRAT

Executable exe 4bf8707ee3eae011e239dca5f7dd1c79e6c564542f3fa9427e3657b35c578c9d

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/59707/

Comments