MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f. 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: 18


Intelligence 18 IOCs 1 YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f
SHA3-384 hash: de90222fc6c8aeddf42d225989d87bcb4f6f8bc7a5353b261070c923f86527ea1daf5785e18182779c65306d55786373
SHA1 hash: 499fe5221399002024b19324de96440aa9db0161
MD5 hash: 011683dfdeb5e3c6b7b7aae186b0df62
humanhash: failed-pizza-nebraska-kilo
File name:011683dfdeb5e3c6b7b7aae186b0df62.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:9'524'892 bytes
First seen:2025-12-20 14:55:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 17d9c30b42ac4d160525e49177119686 (1 x ValleyRAT)
ssdeep 196608:mpxJwt7swJp7S5vgYQJpJsv6tWKFdu9Cjup6jpa2/nV3qatJ8lKfOx458vFOt:mpIt7swJp7S5vWvJsv6tWKFdu9Cmma2t
TLSH T100A6D01777B85164E1B7D13D8AA7810BE6B27C018B2296CF2268A7592F737F01A7F311
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter abuse_ch
Tags:exe RAT ValleyRAT


Avatar
abuse_ch
ValleyRAT C2:
154.91.66.131:6666

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
154.91.66.131:6666 https://threatfox.abuse.ch/ioc/1683837/

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
_4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f.exe
Verdict:
Suspicious activity
Analysis date:
2025-12-20 14:56:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e75d8089-6ff3-43a8-8262-8ed9933a1047

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
WinosStager
Create hunting rule
Link:
https://www.capesandbox.com/analysis/45598/
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6946b8e056a871e6bb7f1ad7
Tags:
emotet shell smtp sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 crypt crypto exploit farfli fingerprint keylogger microsoft_visual_cc packed unsafe
Link:
https://www.filescan.io/uploads/6946b8dc3f8fdbf8e94d0231/reports/43882e6d-bf3e-43fb-a310-5b052f4853cf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-12-18T13:37:00Z UTC
Last seen:
2025-12-19T01:47:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.Shellcode.sb HEUR:Backdoor.Win32.Farfli.gen Exploit.Win64.Shellcode.sliverloader.el Backdoor.Win32.Xkcp.a PDM:Trojan.Win32.Generic Backdoor.Agent.TCP.C&C
Link:
https://opentip.kaspersky.com/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f/results?tab=lookup
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/86f37342-d25f-4857-b16e-2a8de3716194
Result
Threat name:
ValleyRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1836766
Signature
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Creates an undocumented autostart registry key
Disables UAC (registry)
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Tries to detect sandboxes / dynamic malware analysis system (QueryWinSAT)
Unusual module load detection (module proxying)
Uses regedit.exe to modify the Windows registry
Uses Register-ScheduledTask to add task schedules
Uses whoami command line tool to query computer and username
Yara detected ValleyRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1836766 Sample: HzCOQ3P6Vo.exe Startdate: 20/12/2025 Architecture: WINDOWS Score: 100 41 Suricata IDS alerts for network traffic 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 4 other signatures 2->47 8 HzCOQ3P6Vo.exe 4 2->8         started        11 HzCOQ3P6Vo.exe 2->11         started        process3 file4 31 C:\Users\user\AppData\...\HzCOQ3P6Vo.exe, PE32+ 8->31 dropped 33 C:\Users\...\HzCOQ3P6Vo.exe:Zone.Identifier, ASCII 8->33 dropped 13 HzCOQ3P6Vo.exe 5 7 8->13         started        process5 dnsIp6 37 154.91.66.131, 49694, 49695, 49698 IKGUL-26484US Seychelles 13->37 39 127.0.0.1 unknown unknown 13->39 35 C:\Users\Public\Documents\1.reg, Windows 13->35 dropped 57 Multi AV Scanner detection for dropped file 13->57 59 Suspicious powershell command line found 13->59 61 Contains functionality to inject threads in other processes 13->61 63 8 other signatures 13->63 18 powershell.exe 37 13->18         started        21 powershell.exe 39 13->21         started        23 regedit.exe 1 13->23         started        file7 signatures8 process9 signatures10 49 Uses whoami command line tool to query computer and username 18->49 51 Loading BitLocker PowerShell Module 18->51 25 conhost.exe 18->25         started        27 whoami.exe 1 18->27         started        29 conhost.exe 21->29         started        53 Creates an undocumented autostart registry key 23->53 55 Disables UAC (registry) 23->55 process11
Score:
92%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f
Verdict:
inconclusive
YARA:
7 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/011683dfdeb5e3c6b7b7aae186b0df62
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f/
Verdict:
Malicious
Threat:
Family.ValleyRAT
Link:
https://tip.neiki.dev/file/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f
Threat name:
Win64.Backdoor.Farfli
Create hunting rule
Status:
Suspicious
First seen:
2025-12-18 19:32:42 UTC
AV detection:
4 of 24 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ijy2d6waew3hu3wnjjfenj2pxw7tsuefv3q3yn3rsr4gulsau5hq._file
Verdict:
malicious
Label(s):
valleyrat
Create hunting rule
Similar samples:
error
ValleyRAT
Result
Malware family:
valleyrat_s2
Create hunting rule
Score:
  10/10
Tags:
family:valleyrat_s2 backdoor execution
Link:
https://tria.ge/reports/251223-nwk6kawlgw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Executes dropped EXE
ValleyRat
Valleyrat_s2 family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7ac3a35d-6b44-4e2c-9704-14c3c72be1e1
Unpacked files
SH256 hash:
4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f
MD5 hash:
011683dfdeb5e3c6b7b7aae186b0df62
SHA1 hash:
499fe5221399002024b19324de96440aa9db0161
Link:
https://www.unpac.me/results/72b2f9b9-42d1-43d3-84d8-1e18069a8b6e/
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4271a1fac025/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/4271a1fac025b67a6ecd4a4a46a74fbdbf395085aee1bc377194786a2e40a74f

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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:Gh0stKCP
Create hunting rule
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
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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:Sus_CMD_Powershell_Usage
Create hunting rule
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_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:Windows_Generic_Threat_3055c14a
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Donutloader_f40e3759
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Winos_464b8a2e
Create hunting rule
Author:Elastic Security

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/45598/

Comments