MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa. 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: 7


Intelligence 7 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa
SHA3-384 hash: d5d182b45bd074b5459d2f787affb79440eb2e33fdb524833694aa952d9a5ca2f2740ee02a88bedc4de1aec814d81cd6
SHA1 hash: 9a9c6d955b1de6abd2ea9d7a19a8dded3a595a2e
MD5 hash: b7cf4ace572314d01b85e01aac13e364
humanhash: seven-mirror-kansas-violet
File name:inste_a3.1.3.06.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:30'875'136 bytes
First seen:2026-08-20 12:54:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash e3bcc1020ede93cc993af14bb1519dc0 (1 x ValleyRAT)
ssdeep 196608:Nw6S0iQu7g8nmBqtiEPFNPyDhCPpxuze+BFyk57TpyK:Cj0iQrDhEuzeiIkqK
TLSH T15F672A16B941CDE2F4298630C8EA4BA57331ECB5C651470332983B26EF7F3C95F6A598
TrID 33.1% (.EXE) Win64 Executable (generic) (6522/11/2)
25.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
10.4% (.ICL) Windows Icons Library (generic) (2059/9)
10.3% (.EXE) OS/2 Executable (generic) (2029/13)
10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon 79756cecb29999b9 (734 x Heodo, 20 x Nitol, 20 x ManusCrypt)
Reporter Ling
Tags:exe SilverFox ValleyRAT


Avatar
CNGaoLing
SilverFox
IOC (Domain pmgfqn.net) (Domain 06yzro.oss-cn-beijing.aliyuncs.com) (Domain mm2027.oss-cn-hangzhou.aliyuncs.com) (Domain new2027.oss-cn-hongkong.aliyuncs.com)

Intelligence

File Origin
# of uploads :
1
# of downloads :
153
Origin country :
US US
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Enabling the 'hidden' option for recently created files
Creating a file in the Windows subdirectories
Enabling autorun by creating a file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug fingerprint installer-heuristic keylogger microsoft_visual_cc
Link:
https://www.filescan.io/uploads/6a86f93d002deca4a02bf99e/reports/8ed8b30e-567d-4c23-b56f-22a709b34419/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa
Score:
13%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa
Gathering data
Threat name:
Win64.Malware.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-20 12:55:32 UTC
File Type:
PE+ (Exe)
Extracted files:
55
AV detection:
7 of 36 (19.44%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fmh7jm3wijh5ujn3g37wbytlglnbmh3v6oj3ihjlfr6anxvfcp5a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution persistence privilege_escalation trojan
Link:
https://tria.ge/reports/260820-p5zkzscp4t/
Behaviour
Checks processor information in registry
Modifies Control Panel
Modifies registry class
Runs net.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of WriteProcessMemory
System policy modification
Uses Task Scheduler COM API
Enumerates physical storage devices
Event Triggered Execution: Screensaver
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Launches sc.exe
Drops file in System32 directory
Adds Run key to start application
Indicator Removal: Clear Persistence
Checks computer location settings
Disables service(s)
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Drops file in Drivers directory
UAC bypass
Windows security bypass
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2b0ff4b37642/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/2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
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

File information

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

Web download

ValleyRAT

Executable exe 2b0ff4b376424fda25bb36ff60e26b32da161f75f393b41d2b2c7c06dea513fa

(this sample)

  
Delivery method
Distributed via web download

Comments