MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5a3e417ed1fd1dfa50f37ebe857e75a5202c7f3f592aa283d92c228da2d80207. 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
NanoCore
Vendor detections: 14
| SHA256 hash: | 5a3e417ed1fd1dfa50f37ebe857e75a5202c7f3f592aa283d92c228da2d80207 |
|---|---|
| SHA3-384 hash: | e2298d440838fd16ee61ae34703cd1b2b5e45513096ef727f6623649ffa74e32f74fb432d740f52d10885d914a641f00 |
| SHA1 hash: | d6f45f145b7d385fc64451263d2c41dbbda6077b |
| MD5 hash: | c9385224c6c2d84b6878c8c6e9289fc8 |
| humanhash: | mockingbird-fix-california-charlie |
| File name: | BASEstartup.VBE.vbe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 1'267'694 bytes |
| First seen: | 2025-10-30 18:40:07 UTC |
| Last seen: | Never |
| File type: |  vbe |
| MIME type: | text/plain |
| ssdeep | 24576:77lw6vA9N5EciTmR9ehqKzqilK8R7dFuMpvQ:75xTmqBu3 |
| Threatray | 1'072 similar samples on MalwareBazaar |
| TLSH | T10A45021589C41FB9CFEC591C90FE161DA3E04A8B94297889FB3BBD06AFF7544021B1DA |
| Magika | vba |
| Reporter |  abuse_ch |
| Tags: | NanoCore RAT vbe |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 196.251.85.150:7777 | https://threatfox.abuse.ch/ioc/1629670/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
180
Origin country :
NLVendor Threat Intelligence
Verdict:
Malicious
Score:
94.9%
Tags:
dropper spawn remo
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler base64 cscript evasive evasive fingerprint krypt lolbin obfuscated obfuscated persistence powershell reconnaissance taskkill wscript
Verdict:
Malicious
Labled as:
GT:VB.Zbot.9
Verdict:
Malicious
File Type:
text
First seen:
2025-10-30T20:33:00Z UTC
Last seen:
2025-10-31T17:54:00Z UTC
Hits:
~10
Detections:
Trojan.PowerShell.Cobalt.sb Trojan.MSIL.DOTHETUK.sb Trojan.JS.SAgent.sb HEUR:Worm.Script.Generic HEUR:Trojan-Downloader.Script.Generic Trojan-Dropper.JS.SDrop.sb Trojan.Win32.NanoBot.sb
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
AI detected malicious Powershell script
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Potentially Suspicious Malware Callback Communication
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Nanocore RAT
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Verdict:
Malware
YARA:
2 match(es)
Tags:
ADODB.Stream Batch Command MSXML2.DOMDocument.6.0 PowerShell PowerShell Call Scripting.FileSystemObject VBScript WScript.Shell
Detection:
nanocore
Verdict:
Malicious
Threat:
Family.NANOCORE
Threat name:
Win32.Infostealer.Zeus
Status:
Malicious
First seen:
2025-10-30 18:40:53 UTC
File Type:
Text (VBS)
AV detection:
9 of 37 (24.32%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_065
nanocorerat
Similar samples:
+ 1'062 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore discovery execution keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
NanoCore
Nanocore family
Malware Config
C2 Extraction:
196.251.85.150:7777
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
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: | ach_NanoCore |
|---|---|
| Author: | abuse.ch |
| Rule name: | Base64_Encoded_Powershell_Directives |
|---|
| Rule name: | detect_tiny_vbs |
|---|---|
| Author: | daniyyell |
| Description: | Detects tiny VBS delivery technique |
| Rule name: | dgaaga |
|---|---|
| Author: | Harshit |
| Description: | Detects suspicious PowerShell or registry activity |
| Rule name: | Disable_Defender |
|---|---|
| Author: | iam-py-test |
| Description: | Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | malware_Nanocore_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | MALWARE_Win_NanoCore |
|---|---|
| Author: | ditekSHen |
| Description: | Detects NanoCore |
| Rule name: | Nanocore |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | nanocore_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | Nanocore_RAT_Feb18_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Feb18_1_RID2DF1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Gen_2 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detetcs the Nanocore RAT |
| Reference: | https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/ |
| Rule name: | Nanocore_RAT_Gen_2_RID2D96 |
|---|---|
| Author: | Florian Roth |
| Description: | Detetcs the Nanocore RAT |
| Reference: | https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/ |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | Windows_Trojan_Nanocore_d8c4e3c5 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_nanocore_w0 |
|---|---|
| Author: | Kevin Breen <kevin@techanarchy.net> |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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