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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3. 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: 16


Intelligence 16 IOCs 1 YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3
SHA3-384 hash: 923441860128e6390e43862ba52097080a46dde89934a2729f3e4b0f8614380d0f5172472de3ede11ddde9bf4f61d50d
SHA1 hash: fb7e53466c286f4f261a9d1c5dd7924f7cf813c8
MD5 hash: f89a414276e136a36bda7952ca8f6be2
humanhash: quiet-mountain-tennessee-july
File name:F89A414276E136A36BDA7952CA8F6BE2.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:708'983 bytes
First seen:2026-09-11 05:45:16 UTC
Last seen:2026-09-11 10:09:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d76aef91bed064003efa80ffd2eaff08 (1 x ValleyRAT)
ssdeep 12288:pP5KAKUe7ObYPpvVpD3/y9ZQWcHI1sEMGvG5zngaaH/Uf+GydQa2ug/4xwczui/E:pRKHf7m2vVJy9ZQJHCdxw7eMfq75k4x6
TLSH T19EE40222BBC59072E41214356A79D76A693CBC301F22C9E763E03E6DAA707C1C735B67
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 9494b494d4aeaeac (917 x DCRat, 486 x NirCmd, 172 x RedLineStealer)
Reporter abuse_ch
Tags:exe RAT ValleyRAT


Avatar
abuse_ch
ValleyRAT C2:
134.122.155.220:443

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
134.122.155.220:443 https://threatfox.abuse.ch/ioc/1911877/

Intelligence

File Origin
# of uploads :
3
# of downloads :
170
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Archives
Details
Link:
https://research.acce.ciphertechsolutions.com/results/edf78b59-1a9c-48f2-a9a7-20304c00244e/
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-11 06:28:48 UTC
Tags:
auto-reg payload valleyrat rat silverfox winos
Link:
https://app.any.run/tasks/4efd6d6b-480a-43c7-98f7-817027ae7912

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/85054/
Detection(s):
Win.Exploit.Rozena-10038302-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Creating a process from a recently created file
Creating a file in the %temp% directory
Creating a service
Launching a service
Loading a system driver
Deleting a system file
BSOD occurred
Enabling autorun for a service
Forced shutdown of a system process
Verdict:
Malicious
Labled as:
Suspicious:Adware.HotBar.G.kotg
Link:
https://www.hybrid-analysis.com/sample/aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-07T07:22:00Z UTC
Last seen:
2026-09-12T20:11:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3/results?tab=lookup
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fb64f856-9dd3-4266-8b79-7d34148c3ba5
Result
Threat name:
SilverFox Rootkit, ValleyRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1971784
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Detected unpacking (creates a PE file in dynamic memory)
Found malware configuration
Found stalling execution ending in API Sleep call
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample is not signed and drops a device driver
Suricata IDS alerts for network traffic
Tries to detect sandboxes / dynamic malware analysis system (Installed program check)
Unusual module load detection (module proxying)
Yara detected SilverFox Rootkit
Yara detected UAC Bypass using CMSTP
Yara detected ValleyRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1971784 Sample: rrGCOOYS1A.exe Startdate: 11/09/2026 Architecture: WINDOWS Score: 100 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 7 other signatures 2->62 7 explorer.exe 3 2->7         started        9 rrGCOOYS1A.exe 4 2->9         started        12 SvcHostLoader.exe 2->12         started        14 2 other processes 2->14 process3 file4 16 SvcHostLoader.exe 7->16         started        42 C:\###.exe, PE32+ 9->42 dropped 19 ###.exe 1 3 9->19         started        22 cmd.exe 1 12->22         started        24 cmd.exe 14->24         started        process5 file6 46 Multi AV Scanner detection for dropped file 16->46 48 Detected unpacking (creates a PE file in dynamic memory) 16->48 50 Found stalling execution ending in API Sleep call 16->50 54 3 other signatures 16->54 38 C:\Users\user\AppData\...\~sys_12795.sys, PE32+ 19->38 dropped 40 C:\ProgramData\...\SvcHostLoader.exe, PE32+ 19->40 dropped 52 Sample is not signed and drops a device driver 19->52 26 explorer.exe 19->26         started        28 SvcHostLoader.exe 3 22->28         started        32 conhost.exe 22->32         started        34 SvcHostLoader.exe 24->34         started        36 conhost.exe 24->36         started        signatures7 process8 dnsIp9 44 134.122.155.220, 443, 49740, 49743 CTGSERVERLIMITED-AS-APCTGServerLimitedHK Japan 28->44 64 Tries to detect sandboxes / dynamic malware analysis system (Installed program check) 28->64 signatures10
Score:
68%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/f89a414276e136a36bda7952ca8f6be2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3/
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2026-09-07 19:20:28 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=v74i75gz5jk73kylowlgzx4o5ij4hvir4dia34u7t5lxndnrsprq._file
Result
Malware family:
valleyrat_s2
Create hunting rule
Score:
  10/10
Tags:
family:valleyrat_s2 backdoor discovery execution persistence
Link:
https://tria.ge/reports/260911-gfxfbsstft/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Adds Run key to start application
Checks installed software on the system
Enumerates connected drives
Checks computer location settings
Executes dropped EXE
Detects ValleyRAT payload
Family: ValleyRat
Malware Config
C2 Extraction:
134.122.155.220:443
134.122.155.220:80
Unpacked files
SH256 hash:
aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3
MD5 hash:
f89a414276e136a36bda7952ca8f6be2
SHA1 hash:
fb7e53466c286f4f261a9d1c5dd7924f7cf813c8
Link:
https://www.unpac.me/results/75d857e5-a914-401b-8815-8ab73fe6eab2/
SH256 hash:
7a15b288cca08e308e2610042bc010fe31353980b84cbae8f0677adfaab75fe1
MD5 hash:
58501f63b7943960cdc3f1fece490633
SHA1 hash:
3c2dd20051cc0a4a33f048a18b71cd8e9f7fbc29
Detections:
INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/75d857e5-a914-401b-8815-8ab73fe6eab2/
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aff88ff4d9ea/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/aff88ff4d9ea55fdab0b75966cdf8eea13c3d511e0d00df29f9f57768db193e3

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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: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:Indicator_MiniDumpWriteDump
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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:ValleyRAT
Create hunting rule
Author:NDA0E
Description:Detects ValleyRAT
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_Generic_Threat_3055c14a
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/85054/

Comments