MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c. 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: 12


Intelligence 12 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c
SHA3-384 hash: 57cb55b3e1280001ba687fc51961a41555b01156506642c17474de5e8e25213c518770f02939cca333dff99c3568ffdf
SHA1 hash: 15d6e150f7ed9dcee9248acd4a4779fde4b23b99
MD5 hash: 678c7ec516d98417eae68e52cfaddee6
humanhash: hydrogen-johnny-aspen-double
File name:insoft_v10.0.18.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:36'698'624 bytes
First seen:2026-08-15 16:53:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 380560563ebacca1589d8d38ac610187 (22 x ValleyRAT)
ssdeep 196608:eQnmE+fMeDKqTnrT+B7A6Z6dSBqtiEPFNPL12V5pvUFgAN:zKJnGBr4Xu7vUL
TLSH T15287074ABB40CEE6E11A85B098A77B1163FEFD6147E1C30321C83B15DF1B29D4EA7598
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
dhash icon c4e0b0a4cc74626a (22 x ValleyRAT)
Reporter Ling
Tags:exe SilverFox Trojan/SilverFox.bm[lddel] ValleyRAT


Avatar
CNGaoLing
The sample is retrieved from "https://mc-huorong.com.cn" / "https://hn-huorong.com.cn" -> "https://www.sau912om.com/inst15"

Trojan/SilverFox.bm[lddel]
IOC (Domain wjvvhe.net) (Domain yu8y1w.oss-cn-beijing.aliyuncs.com) (Domain mm2027.oss-cn-hangzhou.aliyuncs.com) (Domain new2027.oss-cn-hongkong.aliyuncs.com) (IP 47.243.58.154:28300)

Intelligence

File Origin
# of uploads :
1
# of downloads :
188
Origin country :
US US
Vendor Threat Intelligence
No detections
Malware family:
gh0st
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-08-15 17:01:34 UTC
Tags:
payload rat gh0st stego auto-reg auto-sch uac
Link:
https://app.any.run/tasks/63bc4bac-4ebc-42ea-abbb-1b75e53c9bf7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a service
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm crypto fingerprint microsoft_visual_cc overlay packed packed
Link:
https://www.filescan.io/uploads/6a80998e53a8ed6aff3ee2aa/reports/78bde20a-1e49-4c51-bc87-66da87595746/overview
Verdict:
Malicious
Labled as:
Yogi.Generic
Link:
https://www.hybrid-analysis.com/sample/1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-08-15T13:34:00Z UTC
Last seen:
2026-08-15T13:37:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan-Dropper.Win32.Generic
Link:
https://opentip.kaspersky.com/1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c/results?tab=lookup
Score:
59%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c
Gathering data
Threat name:
Win64.Trojan.Yogi
Create hunting rule
Status:
Malicious
First seen:
2026-08-15 16:56:31 UTC
File Type:
PE+ (Exe)
Extracted files:
21
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=diqkp3dii7i67reksmfzzh66maoj2d2bycdw727nz74rhxma3r6a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution exploit persistence privilege_escalation spyware trojan upx
Link:
https://tria.ge/reports/260815-vd96asgh24/
Behaviour
Runs net.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Uses Task Scheduler COM API
Checks processor information in registry
Modifies Control Panel
Modifies registry class
Modifies system certificate store
Enumerates physical storage devices
Event Triggered Execution: Screensaver
Executes a command shell one-liner
Modifies trusted root certificate store through registry
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Launches sc.exe
Drops file in System32 directory
UPX packed file
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
Command and Scripting Interpreter: PowerShell
Drops file in Drivers directory
Modifies RDP port number used by Windows
Possible privilege escalation attempt
UAC bypass
Windows security bypass
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1a20a7ec6847/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/1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c

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:ClamAV_Emotet_String_Aggregate
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_all_IPv6_variants
Create hunting rule
Author:Bierchermuesli
Description:Generic IPv6 catcher
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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:grakate_stealer_nov_2021
Create hunting rule
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
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:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
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_All_Windows_PE_Malware
Create hunting rule
Author:DiegoAnalytics
Description:Detects Windows PE malware of all types, avoids non-executables like .html
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:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

ValleyRAT

Executable exe 1a20a7ec6847d1efc48a930b9c9fde601c9d0f41c0876febedcff913dd80dc7c

(this sample)

  
Delivery method
Distributed via web download

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