MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75. 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 1 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75
SHA3-384 hash: 5522b3908c1309a9179b1e4b574d4d07be8403b937957963f7bd363fe37440a8c0a5c337e9c2021de18f2ec0b0282f52
SHA1 hash: f3b310e10aa4686c69ffe9bf59622fadc469ef4a
MD5 hash: c5b6d7a45cb935809e8e1193f892da51
humanhash: lake-high-gee-delaware
File name:lets_Install.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:43'780'558 bytes
First seen:2025-08-11 15:02:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6d5e13c0269946a5a10390c178d8e9a5 (4 x ValleyRAT, 2 x CoinMiner, 1 x Rhadamanthys)
ssdeep 786432:QJqHlyDSs9Jf5CTSB9JrpB06ZfrY9rU0mxgAcxp3UbbD8I7q+0TVkVulOJJxUCM5:QJqHlyDSsLfU27JrpB06ZfrY9IbxNqI6
TLSH T16BA7122176AEC43BE16605B1963D9EAAD1387D250FB044CB73DC7A6A1B764C24232F37
TrID 45.7% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
18.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
11.5% (.EXE) Win64 Executable (generic) (10522/11/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
dhash icon c6e2f8ecd4dcdccc (2 x ValleyRAT)
Reporter aachum
Tags:108-187-0-52 CHN exe google-053-morexelectric-com SilverFox ValleyRAT VoidArachne winos


Avatar
iamaachum
https://www.kuaillan.com/KL_lets.zip and https://www.letsvpn.pub/KL_lets.zip

ValleyRAT C2: google.053.morexelectric.com

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
108.187.0.52:442 https://threatfox.abuse.ch/ioc/1567285/

Intelligence

File Origin
# of uploads :
1
# of downloads :
97
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
lets_Install.exe
Verdict:
Suspicious activity
Analysis date:
2025-08-11 14:56:02 UTC
Tags:
advancedinstaller
Link:
https://app.any.run/tasks/b45cf07f-b8b5-42df-9f2d-deb372ebf4db

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689a0483fca70bd90e8e36d2
Tags:
shellcode dropper shell
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Creating a file in the %temp% directory
Loading a suspicious library
Creating a file
Verdict:
Malicious
Labled as:
Trojan/Generic
Link:
https://www.hybrid-analysis.com/sample/a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75
Result
Threat name:
ValleyRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
62 / 100
Link:
https://www.joesandbox.com/analysis/1754691
Signature
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Found many strings related to Crypto-Wallets (likely being stolen)
Found stalling execution ending in API Sleep call
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Modifies the DNS server
Multi AV Scanner detection for submitted file
Sample is not signed and drops a device driver
Sigma detected: Potentially Suspicious Child Process Of Regsvr32
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to access browser extension known for cryptocurrency wallets
Tries to detect sandboxes / dynamic malware analysis system (QueryWinSAT)
Yara detected ValleyRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1754691 Sample: lets_Install.exe Startdate: 11/08/2025 Architecture: WINDOWS Score: 62 97 google.053.morexelectric.com 2->97 103 Suricata IDS alerts for network traffic 2->103 105 Malicious sample detected (through community Yara rule) 2->105 107 Multi AV Scanner detection for submitted file 2->107 109 3 other signatures 2->109 14 msiexec.exe 477 298 2->14         started        18 lets_Install.exe 49 2->18         started        20 drvinst.exe 12 2->20         started        22 regsvr32.exe 2->22         started        signatures3 process4 file5 79 C:\Program Files (x86)\...\tap0901.sys, PE32+ 14->79 dropped 81 C:\Windows\System32\drivers\tap0901.sys, PE32+ 14->81 dropped 83 C:\Windows\Installer\MSI716F.tmp, PE32+ 14->83 dropped 93 224 other files (none is malicious) 14->93 dropped 111 Modifies the DNS server 14->111 113 Sample is not signed and drops a device driver 14->113 24 Dirww.exe 14->24         started        27 msiexec.exe 7 3 14->27         started        29 msiexec.exe 14->29         started        33 3 other processes 14->33 85 C:\Users\user\AppData\Local\...\shi1599.tmp, PE32+ 18->85 dropped 87 C:\Users\user\AppData\Local\...\MSI1AD3.tmp, PE32 18->87 dropped 95 11 other files (none is malicious) 18->95 dropped 31 lets_Install.exe 6 18->31         started        89 C:\Windows\System32\...\tap0901.sys (copy), PE32+ 20->89 dropped 91 C:\Windows\System32\...\SET6AC0.tmp, PE32+ 20->91 dropped signatures6 process7 file8 67 C:\Users\user\AppData\Local\...\Dirww.tmp, PE32 24->67 dropped 35 Dirww.tmp 24->35         started        69 C:\Users\user\AppData\Local\...\shi42D3.tmp, PE32+ 31->69 dropped process9 file10 63 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 35->63 dropped 38 Dirww.exe 35->38         started        process11 file12 65 C:\Users\user\AppData\Local\...\Dirww.tmp, PE32 38->65 dropped 41 Dirww.tmp 38->41         started        process13 file14 71 C:\Users\user\AppData\...\is-VNM9S.tmp, PE32+ 41->71 dropped 73 Windows_Patch_Dist...t-c7Tm1Q.crt (copy), PE32+ 41->73 dropped 75 C:\Users\user\AppData\Local\...\is-OIIGS.tmp, DOS 41->75 dropped 77 2 other files (none is malicious) 41->77 dropped 44 regsvr32.exe 41->44         started        process15 process16 46 regsvr32.exe 44->46         started        dnsIp17 99 google.053.morexelectric.com 108.187.0.52, 442, 49722, 49723 LEASEWEB-USA-LAX-11US United States 46->99 115 System process connects to network (likely due to code injection or exploit) 46->115 117 Found stalling execution ending in API Sleep call 46->117 119 Contains functionality to inject threads in other processes 46->119 121 4 other signatures 46->121 50 powershell.exe 46->50         started        53 powershell.exe 46->53         started        55 WMIC.exe 46->55         started        signatures18 process19 signatures20 101 Loading BitLocker PowerShell Module 50->101 57 conhost.exe 50->57         started        59 conhost.exe 53->59         started        61 conhost.exe 55->61         started        process21
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75
Gathering data
Verdict:
Malicious
Threat:
Win32.Certificate.Invalid
Link:
https://tip.neiki.dev/file/a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75
Threat name:
Win32.Malware.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2025-08-11 14:56:02 UTC
File Type:
PE (Exe)
Extracted files:
849
AV detection:
16 of 24 (66.67%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=udp2uufme5wrnezrs65wmq5siqfdzjywecjau3nrop7dtk6ff52q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence ransomware
Link:
https://tria.ge/reports/250811-seqf6syvcz/
Behaviour
Checks SCSI registry key(s)
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Enumerates connected drives
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Drops file in Drivers directory
Sets service image path in registry
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/45960668-9a0d-41df-86d5-0376549b7972
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a0dfaa50ac27/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/a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:Jupyter_infostealer
Create hunting rule
Author:CD_R0M_
Description:Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022
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:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

ValleyRAT

Executable exe a0dfaa50ac276d16933197bb6643b2440a3ca71620920a6db173fe39abc52f75

(this sample)

anyrun
any.run
https://app.any.run/tasks/5065bd95-ee80-4f9f-9d7b-6249732cf408
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::OpenProcess
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetConsoleTextAttribute
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleScreenBufferInfo
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CopyFileExW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

Comments