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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c. 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: 16


Intelligence 16 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c
SHA3-384 hash: 7b74d0e8064ed3d1ce8823bb7fa9feaf3ec9247bdb2e2980c98334e1fe5f71136cbffa909c4a7de8e02d28084fef6e44
SHA1 hash: 9ac7d11576eb001e99850430b30032dbd86dff44
MD5 hash: 4eccacdd6dae7e3b719a69fc3fe2e099
humanhash: fish-arizona-speaker-artist
File name:instoll.3.1.09.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:37'112'912 bytes
First seen:2026-11-01 18:28:20 UTC
Last seen:2026-11-01 19:21:52 UTC
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash a6a6ee3ce2319cb569a489c278731d92 (6 x ValleyRAT)
ssdeep 49152:7mOOwpdnt9ePcpPnMBAu7o364VqXkD8oWz2rf8oW7O6C/n0wg/rQAdm8H+pnOug0:agpLfMr7OukQNz2rf8oUrQAHe5gALpH
TLSH T183879156BA00DCC2F44692F0949BB6E023FEBCB58AE0C35321D47B196FBE14D4EA7165
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
dhash icon 696a6ee2b2b2c2cc (30 x ValleyRAT, 18 x RedLineStealer, 17 x LummaStealer)
Reporter Ling
Tags:exe PatchedHostLoader SilverFox ValleyRAT


Avatar
CNGaoLing
SilverFox / PatchedHostLoader.airep
IOC (fsidow.net) (7y0z2j.oss-cn-beijing.aliyuncs.com) (20260914back.oss-cn-beijing.aliyuncs.com) (mm2027.oss-cn-hangzhou.aliyuncs.com) (new2027.oss-cn-hongkong.aliyuncs.com) (IP 47.238.89.106:7300)

Intelligence

File Origin
# of uploads :
2
# of downloads :
219
Origin country :
FR FR
Vendor Threat Intelligence
No detections
Malware family:
gh0st
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-11-01 20:41:30 UTC
Tags:
rat gh0st stego payload auto-sch auto-reg
Link:
https://app.any.run/tasks/bb690bbb-097a-4835-90f1-a11193dfa6c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae784fcb121dd519dcf3933
Tags:
shellcode injection cobalt blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file
Enabling the 'hidden' option for recently created files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
ai-borne anti-debug anti-vm installer-heuristic invalid-signature llm-interaction microsoft_visual_cc reconnaissance signed
Link:
https://www.filescan.io/uploads/6ae784f422da617b8e2438ac/reports/d92ecc91-3ff1-4210-9dd6-daa2dc3240ac/overview
Verdict:
Malicious
Labled as:
Yogi.Generic
Link:
https://www.hybrid-analysis.com/sample/f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-11-01T11:41:00Z UTC
Last seen:
2026-11-02T00:45:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan-Dropper.Win32.Generic
Link:
https://opentip.kaspersky.com/f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
rans.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1996359
Signature
Adds extensions / path to Windows Defender exclusion list (Registry)
Antivirus detection for dropped file
Creates an undocumented autostart registry key
Creates multiple autostart registry keys
Deletes shadow drive data (may be related to ransomware)
Disables security and backup related services
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
PE file contains section with special chars
Potential Privilege Escalation using Task Scheduler highest RunLevel
Sigma detected: Execution from Suspicious Folder
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Parent in Public Folder Suspicious Process
Sigma detected: Suspicious Program Location with Network Connections
Switches to a custom stack to bypass stack traces
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Uses cmd line tools excessively to alter registry or file data
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1996359 Sample: instoll.3.1.09.exe Startdate: 01/11/2026 Architecture: WINDOWS Score: 100 101 sc-2ox2.cn-beijing.oss-adns.aliyuncs.com.gds.alibabadns.com 2->101 103 sc-2ox2.cn-beijing.oss-adns.aliyuncs.com 2->103 105 10 other IPs or domains 2->105 115 Malicious sample detected (through community Yara rule) 2->115 117 Antivirus detection for dropped file 2->117 119 Multi AV Scanner detection for dropped file 2->119 121 13 other signatures 2->121 10 BVsk4p.exe 8 26 2->10         started        15 instoll.3.1.09.exe 1 12 2->15         started        17 BVsk4p.exe 2->17         started        19 9 other processes 2->19 signatures3 process4 dnsIp5 109 sc-2c0z.cn-hangzhou.oss-adns.aliyuncs.com.gds.alibabadns.com 118.178.60.2, 443, 49726, 49727 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 10->109 111 sc-2k5x.cn-beijing.oss-adns.aliyuncs.com.gds.alibabadns.com 39.103.20.84, 443, 49734, 49735 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 10->111 87 C:\Program Files (x86)\yquFil\yquFil.exe, PE32 10->87 dropped 89 C:\Program Files (x86)\yquFil\XPSPLOG.dll, PE32 10->89 dropped 91 C:\Program Files (x86)\pnqO6Y\pnqO6Y.exe, PE32 10->91 dropped 93 C:\Program Files (x86)\pnqO6Y\XPSPLOG.dll, PE32 10->93 dropped 143 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 10->143 145 Creates multiple autostart registry keys 10->145 147 Tries to detect virtualization through RDTSC time measurements 10->147 21 yquFil.exe 10->21         started        26 cmd.exe 1 10->26         started        38 4 other processes 10->38 113 sc-2ox2.cn-beijing.oss-adns.aliyuncs.com.gds.alibabadns.com 39.103.20.97, 443, 49723 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 15->113 95 C:\Windows\Temp\ranchserv.jpg, PE32+ 15->95 dropped 97 C:\Users\Public\0tMkb0\UxEnhance64.dll, PE32+ 15->97 dropped 99 C:\Users\Public\0tMkb0\BVsk4p.exe, PE32+ 15->99 dropped 149 Unusual module load detection (module proxying) 15->149 151 Found direct / indirect Syscall (likely to bypass EDR) 15->151 153 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 17->153 28 ComputerDefaults.exe 17->28         started        30 winver.exe 17->30         started        155 Uses cmd line tools excessively to alter registry or file data 19->155 32 reg.exe 1 1 19->32         started        34 reg.exe 1 1 19->34         started        36 reg.exe 1 1 19->36         started        40 7 other processes 19->40 file6 signatures7 process8 dnsIp9 107 103.71.48.92, 17031 CTGSERVERLIMITED-AS-APCTGServerLimitedHK China 21->107 81 C:\Program Files (x86)\16wLKL\tQ6E0MD.exe, PE32 21->81 dropped 83 C:\Program Files (x86)\16wLKL\XPSPLOG.dll, PE32 21->83 dropped 85 C:\Windows\System32\drivers\etc\hosts, ASCII 21->85 dropped 123 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 21->123 125 Creates an undocumented autostart registry key 21->125 127 Creates multiple autostart registry keys 21->127 135 2 other signatures 21->135 42 cmd.exe 21->42         started        45 cmd.exe 21->45         started        47 cmd.exe 21->47         started        55 4 other processes 21->55 129 Uses schtasks.exe or at.exe to add and modify task schedules 26->129 131 Potential Privilege Escalation using Task Scheduler highest RunLevel 26->131 49 conhost.exe 26->49         started        57 3 other processes 26->57 51 BVsk4p.exe 28->51         started        133 Adds extensions / path to Windows Defender exclusion list (Registry) 32->133 59 17 other processes 38->59 53 Conhost.exe 40->53         started        file10 signatures11 process12 signatures13 137 Deletes shadow drive data (may be related to ransomware) 42->137 61 conhost.exe 42->61         started        63 conhost.exe 45->63         started        65 schtasks.exe 45->65         started        67 schtasks.exe 45->67         started        69 net.exe 47->69         started        71 conhost.exe 47->71         started        139 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 51->139 141 Found direct / indirect Syscall (likely to bypass EDR) 51->141 73 conhost.exe 55->73         started        75 icacls.exe 55->75         started        77 3 other processes 55->77 process14 process15 79 net1.exe 69->79         started       
Score:
82%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c
Gathering data
Threat name:
Win64.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-11-01 16:42:52 UTC
File Type:
PE+ (Exe)
Extracted files:
13
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6av3jgzptl4p7y3filfjncyvbz4rczyor6g267moiapfwckm7a6a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution persistence trojan
Link:
https://tria.ge/reports/261101-w4xhkaxvcy/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
Drops file in System32 directory
Adds Run key to start application
Indicator Removal: Clear Persistence
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Windows security bypass
Malware Family:
yogi
Create hunting rule
Malicious:
True
Tags:
overlay 64bits obfuscated
Link:
https://intel.virussign.com/intelligence/file/f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f02bb49b2f9a/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/f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c

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_OutputDebugStringA_iat
Create hunting rule
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:grakate_stealer_nov_2021
Create hunting rule
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:LLM_API_Gemini
Create hunting rule
Author:llm-api-abuse-pilot
Description:References Google Gemini API (PROMPTFLUX / HONESTCUE-style)
Rule name:MULTI_Malware_Unknown_ForgeAuto_4ca5a35d
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (inconnu, etat binaire)
Rule name:MULTI_Malware_Unknown_ForgeAuto_caef9d5a_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (inconnu, etat extrait)
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:TigerRAT_pe_yaraify
Create hunting rule
Author:hunts-yara-code
Description:YARAify-tightened byte rule from 9 sample(s) -- VERIFY hits
Rule name:Win_Clipboard_Clipper_Thengavar
Create hunting rule
Author:Thengavar
Description:Detects malware manipulating the Windows clipboard for clipping or crypto stealing attacks
Rule name:WIN_Malware_Unknown_ForgeAuto_b26e2de9_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.

Web download

ValleyRAT

Executable exe f02bb49b2f9af8ffe36542ca968b150e7911670e8f8daf7d8e401e5b094cf83c

(this sample)

  
Delivery method
Distributed via web download

Comments