MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a777e1f816f6554cce97f5d71dc6814c30e6806ca6337ca04fd08f9e94b65e90. 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: 11
| SHA256 hash: | a777e1f816f6554cce97f5d71dc6814c30e6806ca6337ca04fd08f9e94b65e90 |
|---|---|
| SHA3-384 hash: | 13e7f2d2b389c51ebfdfd49051c9b0a6d7f38a1544ed8d09229851237c11f612feb300348763b924ca7b6a632fd0fbb8 |
| SHA1 hash: | 16efccbe7520c6a760349f4e55b2c6a4f41395f8 |
| MD5 hash: | 6b9aaf2a97c522d8cf95a587ac51f5b0 |
| humanhash: | december-july-kitten-illinois |
| File name: | Chrome333-x64.exe |
| Download: | download sample |
| Signature | ValleyRAT |
| File size: | 26'384'163 bytes |
| First seen: | 2026-03-15 02:45:21 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | d221b1dc8c3a08622f6512e7876527c8 (14 x ValleyRAT, 6 x DonutLoader, 3 x ZhongStealer) |
| ssdeep | 786432:UbHnZrnpXbwy8v6yoNOJ9+EEG2Waib5Ai:unZFcy8SysObbaibCi |
| TLSH | T1C34733D2499419EBFE245E7E86D3304D8D34BB267B01623B7681DA017E2211E937FEB1 |
| TrID | 40.6% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 16.0% (.EXE) Win64 Executable (generic) (6522/11/2) 12.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 11.0% (.EXE) Win32 Executable (generic) (4504/4/1) 5.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| Magika | pebin |
| Reporter |  Ling |
| Tags: | exe SilverFox Trojan:Win32/Malgent!MSR ValleyRAT |
CNGaoLing
This sample has been reviewed by Microsoft researchers and determined to be malware. (Trojan:Win32/Malgent!MSR)SilverFox
IOC (Domain www.cfqax.cyou) (Domain www.cfqaz.cyou)
Intelligence
File Origin
# of uploads :
1
# of downloads :
141
Origin country :
USVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Chrome333-x64.exe
Verdict:
Malicious activity
Analysis date:
2026-03-15 02:47:14 UTC
Tags:
stealer auto-reg valleyrat silverfox rat winos evasion
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
93.3%
Tags:
shellcode dropper madi blic
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
installer installer installer-heuristic microsoft_visual_cc mikey overlay packed packed unsafe
Verdict:
Malicious
Labled as:
Adware.Mikey.Generic
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan.Win32.Gasipi.bs HEUR:Trojan.VBS.SAgent.gen Trojan.Win32.HTA.aup
Score:
63%
Verdict:
Susipicious
File Type:
PE
Gathering data
Gathering data
Verdict:
Malicious
Threat:
Family.VALLEYRAT
Threat name:
Win32.Trojan.Malgent
Status:
Malicious
First seen:
2026-03-14 23:09:22 UTC
AV detection:
18 of 38 (47.37%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
valleyrat_s2
Score:
10/10
Tags:
family:donutloader family:valleyrat_s2 backdoor defense_evasion discovery installer loader persistence privilege_escalation spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Inno Setup is an open-source installation builder for Windows applications.
Browser Information Discovery
Enumerates physical storage devices
Modifies trusted root certificate store through registry
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
System Time Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Badlisted process makes network request
Checks installed software on the system
Checks whether UAC is enabled
Enumerates connected drives
Looks up external IP address via web service
Checks computer location settings
Event Triggered Execution: Component Object Model Hijacking
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Boot or Logon Autostart Execution: Active Setup
Detects DonutLoader
DonutLoader
Donutloader family
ValleyRat
Valleyrat_s2 family
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | mht_inside_word |
|---|---|
| Author: | dPhish |
| Description: | Detect embedded mht files inside microsfot word. |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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