MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9. 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: 15

Intelligence 15 IOCs YARA 21 File information Comments

SHA256 hash:	4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9
SHA3-384 hash:	67a3dd084a9abb422a5eb59f12efd30e2bff7fe1f51955ffd2c9d80240318ec0097e54477d86aede76ab30cb4962d0ec
SHA1 hash:	bf5df13161d95234a21efb1823c59d5adcdcd29e
MD5 hash:	5c9861c1c50e2aff2d29bb2a2aeebca9
humanhash:	blossom-bluebird-equal-sad
File name:	5c9861c1c50e2aff2d29bb2a2aeebca9.exe
Download:	download sample
Signature	ValleyRAT Create hunting rule
File size:	4'612'768 bytes
First seen:	2026-10-05 08:53:14 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
imphash	88016fcdef7f227c62171d0afad9aae4 (29 x ValleyRAT, 21 x OffLoader, 15 x Tofsee)
ssdeep	98304:R5OOAiPE2dHr8+siEARo4FqyiB5xFzX/gL7kBO5WIw0XDR6Pkt5:LxA2Vo+YAlFz4VXI3kG9t6Pkt5
TLSH	T19D26023BF28B753EE02A5A367AB6D110543B7A20A5024C169AECF48CCF755711E3E787
TrID	50.8% (.EXE) Inno Setup installer (107240/4/30) 20.4% (.EXE) InstallShield setup (43053/19/16) 19.7% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9) 3.0% (.EXE) Win64 Executable (generic) (6522/11/2) 2.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
dhash icon	5050d270cccc82ae (115 x Adware.Generic, 86 x OffLoader, 50 x ValleyRAT)
Reporter	abuse_ch
Tags:	exe ValleyRAT

Intelligence

File Origin

# of uploads :

# of downloads :

189

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/ed8a867d-ff9d-43f8-8dae-d011ce245750/

Malware family:

n/a

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-10-05 09:52:22 UTC

Tags:

k7rkscan-sys vuln-driver valleyrat silverfox rat winos donutloader loader lua

Link:

https://app.any.run/tasks/4a905887-76a4-49b2-8818-3add48c3faaf

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

WinosStager

Link:

https://www.capesandbox.com/analysis/90681/

Detection(s):

SecuriteInfo.com.Win32.Malware-gen.23315286.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %temp% subdirectories

Creating a window

Creating a process from a recently created file

Сreating synchronization primitives

Searching for synchronization primitives

Creating a file

Moving a recently created file

Deleting a recently created file

Creating a service

Launching a service

Loading a system driver

Connection attempt

Sending a custom TCP request

Enabling autorun for a service

Gathering data

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-10-02T13:11:00Z UTC

Last seen:

2026-10-06T20:02:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9/results?tab=lookup

Malware family:

ValleyRAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a6d7afe2-067b-49c2-8bab-ab6d3660bb8d

Score:

73%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/5c9861c1c50e2aff2d29bb2a2aeebca9

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9/

Threat name:

Win32.Trojan.Vuldriver

Status:

Suspicious

First seen:

2026-10-03 04:24:46 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 38 (55.26%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jwio4lqm53mtc4l34enqzz7u6y2nh36izta64yyvnrkxh3fqktuq._file

Verdict:

malicious

Label(s):

ValleyRAT

Link:

https://reports.threatray.com/9d6de59a-49ae-4267-8885-b819a9d9a7fa

Result

Malware family:

valleyrat_s2

Score:

10/10

Tags:

family:donutloader family:valleyrat_s2 backdoor discovery installer loader

Link:

https://tria.ge/reports/261005-ktzdmasvfs/

Behaviour

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: LoadsDriver

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Inno Setup is an open-source installation builder for Windows applications.

Enumerates physical storage devices

Reads the TCP/IP host and domain name from the registry

System Location Discovery: System Language Discovery

Checks installed software on the system

Enumerates connected drives

Executes dropped EXE

Loads dropped DLL

Detects DonutLoader

Detects ValleyRAT payload

Family: DonutLoader

Family: ValleyRat

Unpacked files

SH256 hash:

4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9

MD5 hash:

5c9861c1c50e2aff2d29bb2a2aeebca9

SHA1 hash:

bf5df13161d95234a21efb1823c59d5adcdcd29e

Link:

https://www.unpac.me/results/d140f1bd-a88c-4065-a772-085002e8cc50/

SH256 hash:

98f21855266cd14d5ba00b880b15584e71dcdd23cdaaf6bcd97b3f8dfdb322ab

MD5 hash:

554ca54274c3a1b24be4317a56dddb28

SHA1 hash:

5bb1181ca6debbbfa5d3f189d7dbaa8f57634e25

Link:

https://www.unpac.me/results/d140f1bd-a88c-4065-a772-085002e8cc50/

SH256 hash:

f44d87130760a8d50ae002566e6b1d09fabf315f2182d7e718669f0cec9a11ed

MD5 hash:

e985eb5f007d6b38b3205c1bc5963843

SHA1 hash:

f41be4d7b753563abcc778c491acaeda20b5b6b5

Link:

https://www.unpac.me/results/d140f1bd-a88c-4065-a772-085002e8cc50/

Malware family:

DonutLoader

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4d90ee2e0cee/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/4d90ee2e0ceed931717be11b0ce7f4f634d3efc8ccc1ee63156c5573ecb054e9

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:	Borland Create hunting rule
Author:	malware-lu

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:	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:	MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects AgentTesla (inconnu, etat extrait)

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

Rule name:	telebot_framework Create hunting rule
Author:	vietdx.mb

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:	Windows_Trojan_Donutloader_f40e3759 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Winos_464b8a2e Create hunting rule
Author:	Elastic Security

Rule name:	WinosStager Create hunting rule
Author:	YungBinary
Description:	https://www.esentire.com/blog/winos4-0-online-module-staging-component-used-in-cleversoar-campaign

Rule name:	WIN_Malware_ACRStealer_ForgeAuto_1084c837_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects ACRStealer (pe, etat extrait)

Rule name:	WIN_Malware_Fantom_ForgeAuto_98e6f354_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Fantom (pe, etat extrait)

Rule name:	WIN_Malware_Unknown_ForgeAuto_1708427c_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat extrait)

Rule name:	WIN_Malware_Unknown_ForgeAuto_4ab123d7_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat extrait)

Rule name:	WIN_Malware_Unknown_ForgeAuto_6422f546_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat extrait)

Rule name:	WIN_Malware_Unknown_ForgeAuto_f5d58a9e_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat extrait)

File information

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

Cape

https://www.capesandbox.com/analysis/90681/

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