MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1649aa15ff4adf65fafcaab19122796b23a21f506e6f3fe74d029483a8d166e9. 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: 19


Intelligence 19 IOCs 1 YARA 26 File information Comments

SHA256 hash: 1649aa15ff4adf65fafcaab19122796b23a21f506e6f3fe74d029483a8d166e9
SHA3-384 hash: 0f1be957131d0712b0a7a32b47e0ef324baba5481445bb16891ca3e1e915262fe135c09bd47d98cd5cea2d1dd9042e8f
SHA1 hash: dee52105a37f3112710ce63602d0213091cb2f65
MD5 hash: d7078f1821be0bf8e5d9245a32825743
humanhash: violet-romeo-blossom-pennsylvania
File name:1649aa15ff4adf65fafcaab19122796b23a21f506e6f3.exe
Download: download sample
Signature ValleyRAT
File size:3'044'352 bytes
First seen:2026-04-11 12:16:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fc201832db8b875359de41cab619a321 (1 x ValleyRAT)
ssdeep 49152:/nG3KfzAi0eY4lOxkT/lyn79yJ7OK8rhkveStZy:efikSrIqvT
Threatray 1 similar samples on MalwareBazaar
TLSH T1C0E58C02A29501FDE077C634CA478532EA727C41B771BADF06D0BA572E3BAE05A7DB11
TrID 29.5% (.EXE) Win64 Executable (generic) (6522/11/2)
22.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
20.3% (.EXE) Win32 Executable (generic) (4504/4/1)
9.1% (.EXE) OS/2 Executable (generic) (2029/13)
9.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon 6563bbd756505099 (10 x ValleyRAT)
Reporter abuse_ch
Tags:exe RAT ValleyRAT


Avatar
abuse_ch
ValleyRAT C2:
16.163.74.23:22011

Indicators Of Compromise (IOCs)


Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
16.163.74.23:22011 https://threatfox.abuse.ch/ioc/1784251/

Intelligence


File Origin
# of uploads :
1
# of downloads :
133
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1649aa15ff4adf65fafcaab19122796b23a21f506e6f3fe74d029483a8d166e9.exe
Verdict:
Malicious activity
Analysis date:
2026-04-11 11:55:52 UTC
Tags:
uac valleyrat rat silverfox winos

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
dropper emotet virus hype
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a process from a recently created file
Creating a service
Launching a service
Loading a suspicious library
Creating a file in the Windows subdirectories
Loading a system driver
Setting a prohibition to launch some applications
Running batch commands
Using the Windows Management Instrumentation requests
Possible injection to a system process
Forced shutdown of a system process
Enabling autorun for a service
Prohibiting to launch files
Blocking the Windows Defender launch
Blocking the Windows Security Center notifications
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 cmd evasive exploit explorer fingerprint fingerprint installer-heuristic lolbin microsoft_visual_cc overlay uacme unsafe
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-04-11T03:28:00Z UTC
Last seen:
2026-04-13T02:50:00Z UTC
Hits:
~100
Detections:
HEUR:HackTool.Win64.UACme.gen VHO:Backdoor.Win32.Agent.gen Backdoor.Xkcp.TCP.ServerRequest Backdoor.Agent.TCP.C&C Trojan.Win32.Agent.sb Trojan-Dropper.Win32.Agent.sb
Result
Threat name:
Metasploit, ValleyRAT
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
Detected unpacking (creates a PE file in dynamic memory)
Disable Windows Defender notifications (registry)
Disable Windows Defender real time protection (registry)
Disable Windows Defender Security Center Settings (registry)
Disables Windows Defender (deletes autostart)
Disables Windows Defender Tamper protection
Forces installed software to run under restricted privileges
Found malware configuration
Joe Sandbox ML detected suspicious sample
Modifies security policies related information
Modifies Windows Defender signatures updates days
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
NDIS Filter Driver detected (likely used to intercept and sniff network traffic)
Sample is not signed and drops a device driver
Suricata IDS alerts for network traffic
Unusual module load detection (module proxying)
Yara detected MetasploitPayload
Yara detected ValleyRAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1896851 Sample: 1649aa15ff4adf65fafcaab1912... Startdate: 11/04/2026 Architecture: WINDOWS Score: 100 62 Suricata IDS alerts for network traffic 2->62 64 Found malware configuration 2->64 66 Antivirus detection for dropped file 2->66 68 8 other signatures 2->68 10 svchost.exe 336 1 2->10         started        14 1649aa15ff4adf65fafcaab19122796b23a21f506e6f3.exe 1 5 2->14         started        16 explorer.exe 1 2->16         started        18 7 other processes 2->18 process3 dnsIp4 52 C:\Windows\Temp\drv_84874.sys, PE32+ 10->52 dropped 74 Forces installed software to run under restricted privileges 10->74 76 Disables Windows Defender (deletes autostart) 10->76 78 Disables Windows Defender Tamper protection 10->78 84 6 other signatures 10->84 21 cmd.exe 1 10->21         started        54 C:\ProgramDatabehaviorgrapholden\xweb_elf.dll, PE32+ 14->54 dropped 56 C:\ProgramDatabehaviorgrapholden\WeChatAppEx_1.exe, PE32+ 14->56 dropped 58 C:\ProgramDatabehaviorgrapholden\WeChatAppEx.exe, PE32+ 14->58 dropped 23 explorer.exe 14->23         started        25 WeChatAppEx.exe 16->25         started        60 16.163.74.23, 22011, 49724, 49725 unknown United States 18->60 80 Benign windows process drops PE files 18->80 82 Changes security center settings (notifications, updates, antivirus, firewall) 18->82 28 WeChatAppEx_1.exe 18->28         started        30 MpCmdRun.exe 18->30         started        file5 signatures6 process7 signatures8 32 conhost.exe 21->32         started        34 gpupdate.exe 21->34         started        70 Detected unpacking (creates a PE file in dynamic memory) 25->70 72 Unusual module load detection (module proxying) 25->72 36 ComputerDefaults.exe 25->36         started        38 winver.exe 25->38         started        40 ComputerDefaults.exe 28->40         started        42 winver.exe 28->42         started        process9 process10 44 WeChatAppEx.exe 1 36->44         started        46 WeChatAppEx_1.exe 3 40->46         started        process11 48 explorer.exe 44->48         started        process12 50 conhost.exe 48->50         started       
Gathering data
Threat name:
Win64.Backdoor.Valleyrat
Status:
Suspicious
First seen:
2026-04-11 11:56:05 UTC
File Type:
PE+ (Exe)
Extracted files:
70
AV detection:
13 of 23 (56.52%)
Threat level:
  5/5
Result
Malware family:
valleyrat_s2
Score:
  10/10
Tags:
family:valleyrat_s2 backdoor credential_access defense_evasion evasion persistence ransomware trojan
Behaviour
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Enumerates connected drives
Boot or Logon Autostart Execution: LSASS Driver
Executes dropped EXE
Loads dropped DLL
Server Software Component: Terminal Services DLL
Detects ValleyRAT payload
Modifies Windows Defender Real-time Protection settings
Modifies Windows Defender TamperProtection settings
Modifies Windows Defender notification settings
Modifies firewall policy service
ValleyRat
Valleyrat_s2 family
Windows security bypass
Malware Config
C2 Extraction:
16.163.74.23:22011
16.163.74.23:22012
Unpacked files
SH256 hash:
1649aa15ff4adf65fafcaab19122796b23a21f506e6f3fe74d029483a8d166e9
MD5 hash:
d7078f1821be0bf8e5d9245a32825743
SHA1 hash:
dee52105a37f3112710ce63602d0213091cb2f65
SH256 hash:
5e55344f9aae163669cb49770409855e5192efc6938e6fe0d601a4e8877a3eb4
MD5 hash:
27da48d4b568892bb799a6f64c4946f0
SHA1 hash:
b0ad420671253274055106a5223a1356acebc208
SH256 hash:
3bf51dad5d173a974a4ac7f2e0735ec82769915814d52e297e8ab73babfcb693
MD5 hash:
0c6c47e1e53eb22fecab0a81a53927fc
SHA1 hash:
411af107471f8837c86d18dc3176a9568583acd0
Detections:
INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
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:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:Gh0stKCP
Author:Netresec
Description:Detects HP-Socket ARQ and KCP implementations, which are used in Gh0stKCP. Forked from @stvemillertime's KCP catchall rule.
Reference:https://netresec.com/?b=259a5af
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Author:ditekSHen
Description:Detects executables embedding registry key / value combination indicative of disabling Windows Defender features
Rule name:malware_shellcode_hash
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:SHA512_Constants
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:test_rule_vldslv
Rule name:ThreadControl__Context
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:VECT_Ransomware
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_Generic_Threat_3055c14a
Author:Elastic Security
Rule name:Windows_Trojan_Winos_464b8a2e
Author:Elastic Security
Rule name:WinosStager
Author:YungBinary
Description:https://www.esentire.com/blog/winos4-0-online-module-staging-component-used-in-cleversoar-campaign

File information


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

Comments