MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe. 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: 10


Intelligence 10 IOCs 1 YARA 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe
SHA3-384 hash: 4a0e273b778b78cae744d0077dec6cc0805a11651d2850c0cafe72adabd01c0f16e28df540afedfa049e417741eb83a2
SHA1 hash: 1927da919377e0d88363326973a97fbd32c7eeec
MD5 hash: db79946f96cbbd47e4782dcdd737a66e
humanhash: artist-hamper-diet-cold
File name:DB79946F96CBBD47E4782DCDD737A66E.dll
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:6'030'848 bytes
First seen:2026-08-17 05:10:18 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash 0db6ec0cc5db78e445f4d8b4f6886872 (4 x ValleyRAT)
ssdeep 98304:dslOw/acVlIX6iTfjHCQCazaDkrAFXDxzSvZ4OiZrq1DfPHNADtV6v+zM+rwroD9:dss5UalCazaPJtOvZ4O7NADtV6v+zZRR
TLSH T11256D0123C5C1066E41A0330DE69A2FCF6BE6C663B30D29711A0F6BDED71B425A546FB
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 798e960f3396cc71 (33 x ValleyRAT)
Reporter abuse_ch
Tags:dll RAT ValleyRAT


Avatar
abuse_ch
ValleyRAT C2:
202.61.85.34:7811

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
202.61.85.34:7811 https://threatfox.abuse.ch/ioc/1877249/

Intelligence

File Origin
# of uploads :
1
# of downloads :
174
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection:
WinosStager
Create hunting rule
Link:
https://www.capesandbox.com/analysis/81549/
Detection(s):
SecuriteInfo.com.Variant.Yogi.51341.65189991.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug bitsadmin certutil cmd crypto dropper evasive explorer fingerprint keylogger lolbin microsoft_visual_cc msiexec onedrivestandaloneupdater packed reconnaissance
Link:
https://www.filescan.io/uploads/6a8297c4d6e871c97a03f173/reports/c978e884-034f-4924-a1f3-0514daf91050/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe
Verdict:
Malicious
File Type:
dll x32
First seen:
2026-08-14T04:51:00Z UTC
Last seen:
2026-08-14T07:06:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0534b439-e394-4ddd-a6f0-2412982ab52f
Result
Threat name:
ValleyRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1958794
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Rundll32 Execution Without CommandLine Parameters
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected ValleyRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1958794 Sample: kvvOs6blt8.dll Startdate: 17/08/2026 Architecture: WINDOWS Score: 96 100 ideas-irisselection-irisfd-lb.prod-b-eus2.ideas-irisselection-irisfd.eastus2-prod.cosmic.office.net 2->100 102 eip-terr-na.cdp1.digicert.com.akahost.net 2->102 104 3 other IPs or domains 2->104 110 Suricata IDS alerts for network traffic 2->110 112 Found malware configuration 2->112 114 Multi AV Scanner detection for submitted file 2->114 116 5 other signatures 2->116 10 loaddll32.exe 1 2->10         started        12 rundll32.exe 2->12         started        signatures3 process4 process5 14 cmd.exe 1 10->14         started        16 rundll32.exe 5 10->16         started        19 rundll32.exe 10->19         started        21 13 other processes 10->21 file6 23 rundll32.exe 3 16 14->23         started        80 EDF0531D-A43E-4EC8-8AA0-D82B695835D5.ExE, PE32 16->80 dropped 82 C:\...\Display.NvApp.NvBackend.EXE, PE32 16->82 dropped 28 cmd.exe 16->28         started        30 taskkill.exe 1 16->30         started        84 8D9A6936-3142-4487-82AA-BE70EE8C804B.ExE, PE32 19->84 dropped 86 C:\...\Display.NvApp.NvBackend.EXE, PE32 19->86 dropped 32 cmd.exe 19->32         started        34 taskkill.exe 19->34         started        88 DA5A13F2-6E81-41BE-A83D-CD9BF9838D59.ExE, PE32 21->88 dropped 90 C95FAE29-D252-4791-8DD3-72736542331E.ExE, PE32 21->90 dropped 92 B1EAB7EE-E233-4B76-A253-1CF48897ACB0.ExE, PE32 21->92 dropped 94 21 other files (none is malicious) 21->94 dropped 36 cmd.exe 1 21->36         started        38 cmd.exe 21->38         started        40 taskkill.exe 1 21->40         started        42 taskkill.exe 1 21->42         started        process7 dnsIp8 106 atyv788.club 202.61.85.34, 49705, 49711, 49714 COMING-ASABCDEGROUPHK Hong Kong SAR China 23->106 108 api.ipify.org 104.26.12.205, 443, 49712, 49715 CLOUDFLARENET-CloudflareIncUS Canada 23->108 96 EE2212C5-7B86-4FED-AB38-4B4C47D6882E.ExE, PE32 23->96 dropped 98 C:\...\Display.NvApp.NvBackend.EXE, PE32 23->98 dropped 118 System process connects to network (likely due to code injection or exploit) 23->118 44 cmd.exe 28->44         started        46 conhost.exe 28->46         started        48 conhost.exe 30->48         started        56 2 other processes 32->56 50 conhost.exe 34->50         started        58 2 other processes 36->58 60 2 other processes 38->60 52 conhost.exe 40->52         started        54 conhost.exe 42->54         started        file9 signatures10 process11 process12 62 tasklist.exe 44->62         started        64 find.exe 44->64         started        66 timeout.exe 44->66         started        76 2 other processes 44->76 78 3 other processes 56->78 68 tasklist.exe 1 58->68         started        70 find.exe 1 58->70         started        72 tasklist.exe 1 60->72         started        74 find.exe 60->74         started       
Score:
75%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/db79946f96cbbd47e4782dcdd737a66e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe/
Threat name:
Win32.Trojan.Ravartar
Create hunting rule
Status:
Malicious
First seen:
2026-08-14 15:22:53 UTC
File Type:
PE (Dll)
Extracted files:
951
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6erpysvecpvgyvykkwqdhktwinzgjo7e7vx546x4lkqo53nfl7a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/260817-ftw62stdkb/
Behaviour
Delays execution with timeout.exe
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Discovers running processes
Drops file in System32 directory
Enumerates connected drives
Looks up external IP address via web service
Executes dropped EXE
Badlisted process makes network request
Unpacked files
SH256 hash:
cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe
MD5 hash:
db79946f96cbbd47e4782dcdd737a66e
SHA1 hash:
1927da919377e0d88363326973a97fbd32c7eeec
Link:
https://www.unpac.me/results/5aed00e6-97b7-4215-8fc2-60d47c414967/
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cf8917e25520/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/cf8917e255209f5362b852ad019d53b21b9325df27eb7ef3d7e2d507776d2afe

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:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:GenericGh0st
Create hunting rule
Author:Still
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:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
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:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
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:VECT_Ransomware
Create hunting rule
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_Trojan_Winos_464b8a2e
Create hunting rule
Author:Elastic Security
Rule name:WinosStager
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/81549/

Comments