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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a. 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 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a
SHA3-384 hash: dbef23b18875f1b5ed5d61ab4684b8426a0569ede5144da4c9d6ef338c138fa9530704400e5ba17322fe103e9e9fa4ec
SHA1 hash: 13df33d42317aac2ca0aaf29f9b4b1259a1e09a9
MD5 hash: 6d443931bb01286ed7881febc3f68bf6
humanhash: nebraska-table-east-tennessee
File name:ins_setup.0.14.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:37'483'168 bytes
First seen:2026-11-07 12:35:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash 20abbe0f6ab059ea4a375bcb6b8a717b (10 x ValleyRAT)
ssdeep 98304:CFoG4QOye2FHAQfMArIeBTg07h27e09X6rS+BVcruRYk7VCXWxU:CMQh3fMArbdU
TLSH T15F870C427742D962D8540A7B8C9ADBC82371FD8AEE06630738C6772F2EB66C7DD03495
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 009269ecd4d42900 (11 x ValleyRAT, 2 x CobaltStrike)
Reporter Ling
Tags:exe PatchedHostLoader SilverFox ValleyRAT


Avatar
CNGaoLing
The sample is retrieved from "https://deepseek-client.net" -> "https://www.grg1n.com/clientsetup"

SilverFox / PatchedHostLoader.airep
IOC (jsdobo.net) (hef13r.oss-cn-beijing.aliyuncs.com) (20260914back.oss-cn-beijing.aliyuncs.com) (new2027.oss-cn-hongkong.aliyuncs.com) (IP 8.217.58.140:7300)

Intelligence

File Origin
# of uploads :
1
# of downloads :
40
Origin country :
US US
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6af1bcb11492c978625a48a1
Tags:
injection virus crypt
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
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm expired-cert fingerprint invalid-signature microsoft_visual_cc signed
Link:
https://www.filescan.io/uploads/6aef1b3a37c7b64041440c8c/reports/7455e147-66e4-42bb-8e13-32e7d9bb86b5/overview
Verdict:
Malicious
Labled as:
Yogi.Generic
Link:
https://www.hybrid-analysis.com/sample/fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a
Verdict:
Malicious
File Type:
exe x64
Detections:
HEUR:Trojan-Dropper.Win32.Generic
Link:
https://opentip.kaspersky.com/fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a/results?tab=lookup
Result
Threat name:
GhostRat
Create hunting rule
Detection:
malicious
Classification:
rans.troj.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/2000418
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 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
Suricata IDS alerts for network traffic
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
Yara detected GhostRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 2000418 Sample: ins_setup.0.14.exe Startdate: 07/11/2026 Architecture: WINDOWS Score: 100 103 www.google.com 2->103 105 twc.trafficmanager.net 2->105 107 15 other IPs or domains 2->107 123 Suricata IDS alerts for network traffic 2->123 125 Malicious sample detected (through community Yara rule) 2->125 127 Antivirus detection for dropped file 2->127 129 14 other signatures 2->129 10 I5hb0a.exe 8 46 2->10         started        15 ins_setup.0.14.exe 1 12 2->15         started        17 I5hb0a.exe 2->17         started        19 8 other processes 2->19 signatures3 process4 dnsIp5 115 sc-2c0z.cn-hangzhou.oss-adns.aliyuncs.com.gds.alibabadns.com 118.178.60.2, 443, 49745, 49748 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 10->115 117 sc-2k5x.cn-beijing.oss-adns.aliyuncs.com.gds.alibabadns.com 39.103.20.84, 443, 49753, 49754 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 10->117 119 127.0.0.1 unknown unknown 10->119 89 C:\Program Files (x86)\IaU1aF\XPSPLOG.dll, PE32 10->89 dropped 91 C:\Program Files (x86)\IaU1aF\IaU1aF.exe, PE32 10->91 dropped 93 C:\Program Files (x86)\0moYoM\XPSPLOG.dll, PE32 10->93 dropped 95 C:\Program Files (x86)\0moYoM\0moYoM.exe, PE32 10->95 dropped 151 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 10->151 153 Creates multiple autostart registry keys 10->153 155 Tries to detect virtualization through RDTSC time measurements 10->155 21 IaU1aF.exe 10->21         started        26 cmd.exe 1 10->26         started        38 4 other processes 10->38 121 sc-2yv6.cn-beijing.oss-adns.aliyuncs.com.gds.alibabadns.com 39.103.20.101, 443, 49743 ALIBABA-CN-NETHangzhouAlibabaAdvertisingCoLtdCN China 15->121 97 C:\Windows\Temp\ranchserv.jpg, PE32+ 15->97 dropped 99 C:\Users\Public\A8VuwH\UxEnhance64.dll, PE32+ 15->99 dropped 101 C:\Users\Public\A8VuwH\I5hb0a.exe, PE32+ 15->101 dropped 157 Unusual module load detection (module proxying) 15->157 159 Found direct / indirect Syscall (likely to bypass EDR) 15->159 161 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 17->161 28 ComputerDefaults.exe 17->28         started        30 winver.exe 17->30         started        163 Uses cmd line tools excessively to alter registry or file data 19->163 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 8 other processes 19->40 file6 signatures7 process8 dnsIp9 109 8.217.58.140, 49751, 7300 ALIBABA-CN-NETAlibabaUSTechnologyCoLtdCN Hong Kong SAR China 21->109 111 twc.trafficmanager.net 40.119.6.228, 123, 52550 MICROSOFT-CORP-MSN-AS-BLOCK-MicrosoftCorporationUS United States 21->111 113 new2027.oss-cn-hongkong.aliyuncs.com 47.79.64.181, 443, 49752, 49784 ALIBABA-CN-NETAlibabaUSTechnologyCoLtdCN Hong Kong SAR China 21->113 81 C:\ProgramData\0162adc0.exe, PE32 21->81 dropped 83 C:\Program Files (x86)\F8WkOnn\XPSPLOG.dll, PE32 21->83 dropped 85 C:\Program Files (x86)\...\WM8Js72k6.exe, PE32 21->85 dropped 87 C:\Windows\System32\drivers\etc\hosts, ASCII 21->87 dropped 131 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 21->131 133 Creates an undocumented autostart registry key 21->133 135 Creates multiple autostart registry keys 21->135 143 3 other signatures 21->143 42 cmd.exe 21->42         started        45 cmd.exe 21->45         started        47 cmd.exe 21->47         started        55 7 other processes 21->55 137 Uses schtasks.exe or at.exe to add and modify task schedules 26->137 139 Potential Privilege Escalation using Task Scheduler highest RunLevel 26->139 49 schtasks.exe 1 26->49         started        51 conhost.exe 26->51         started        57 2 other processes 26->57 53 I5hb0a.exe 28->53         started        141 Adds extensions / path to Windows Defender exclusion list (Registry) 32->141 59 16 other processes 38->59 file10 signatures11 process12 signatures13 145 Deletes shadow drive data (may be related to ransomware) 42->145 61 conhost.exe 42->61         started        63 net.exe 45->63         started        65 conhost.exe 45->65         started        67 conhost.exe 47->67         started        69 icacls.exe 47->69         started        71 Conhost.exe 49->71         started        147 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 53->147 149 Found direct / indirect Syscall (likely to bypass EDR) 53->149 73 conhost.exe 55->73         started        75 conhost.exe 55->75         started        77 4 other processes 55->77 process14 process15 79 net1.exe 63->79         started       
Gathering data
Threat name:
Win64.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2026-11-07 12:36:27 UTC
File Type:
PE+ (Exe)
Extracted files:
14
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7szi5pndrae4q7lyyegc7rbl2ddaos45rlseibjy5pg7br6fbu5a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution persistence trojan
Link:
https://tria.ge/reports/261107-pszefsxz6q/
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
Windows security bypass
Command and Scripting Interpreter: PowerShell
Malware Family:
yogi
Create hunting rule
Malicious:
True
Tags:
64bits overlay obfuscated
Link:
https://intel.virussign.com/intelligence/file/fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fcb28ebda388/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/fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a

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: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:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
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: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:TigerRAT_pe_yaraify
Create hunting rule
Author:hunts-yara-code
Description:YARAify-tightened byte rule from 9 sample(s) -- VERIFY hits

File information

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

Web download

ValleyRAT

Executable exe fcb28ebda38809c87d78c10c2fc42bd0c6074b9d8ae4440538ebcdf0c7c50d3a

(this sample)

  
Delivery method
Distributed via web download

Comments