MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 365a0e47f24d161f455a522b6a8e15343f257b8cf201173f5696dbcada4f025c. 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: 8

Intelligence 8 IOCs YARA 6 File information Comments

SHA256 hash:	365a0e47f24d161f455a522b6a8e15343f257b8cf201173f5696dbcada4f025c
SHA3-384 hash:	892394ed0b9c0cbbdb4ddd7aa2a6d6f7938fac03d3ea0242e1456fbfdb1c7f5acac1b3028e7ae3b3244dd4f69193543d
SHA1 hash:	9ad480223863713f83b270166ab7be560da64cc4
MD5 hash:	d5d5515bf318451d7a7b39565569ea72
humanhash:	moon-oklahoma-early-bravo
File name:	PROFORMA020005057R1RINVOICE25809654567543456654334 Spec_scan.exe
Download:	download sample
Signature	NanoCore Create hunting rule
File size:	875'008 bytes
First seen:	2020-10-28 07:36:57 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	12288:rJCFYUf+5z7XszyQRl71XH/5KlEZEvT6VwO2XEDNu4rdj7MpNLoT7RiksvQ84Swa:rwYI+5PXszyQDBRKlQ6T6VLt9crbw
TLSH	32154A8C325072DED86BC279CEA84C28EA91747BC31B420BF02755AD994DA87EF551F3
Reporter	abuse_ch
Tags:	exe NanoCore RAT

abuse_ch

Malspam distributing NanoCore:

HELO: server.fiarngroup.com
Sending IP: 37.77.104.42
From: Accounts <accounts@creet.com>
Subject: Proforma Invoice 30% advance payment
Attachment: SKM_C258201001130020005057R1REMITTANCEC25809654567543456654334 Spec_scanned from a xerox printer001. (contains "PROFORMA020005057R1RINVOICE25809654567543456654334 Spec_scan.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

n/a

Vendor Threat Intelligence

Detection:

NanoCore

Link:

https://www.capesandbox.com/analysis/80301/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Unauthorized injection to a recently created process

Creating a file

Creating a file in the %AppData% subdirectories

Creating a file in the Program Files subdirectories

DNS request

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Sending a TCP request to an infection source

Result

Threat name:

Nanocore

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/514597

Signature

.NET source code contains potential unpacker

Connects to many ports of the same IP (likely port scanning)

Detected Nanocore Rat

Hides that the sample has been downloaded from the Internet (zone.identifier)

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: NanoCore

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses dynamic DNS services

Yara detected AntiVM_3

Yara detected Nanocore RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/365a0e47f24d161f455a522b6a8e15343f257b8cf201173f5696dbcada4f025c/

Threat name:

ByteCode-MSIL.Trojan.Taskun

Status:

Malicious

First seen:

2020-10-27 23:29:11 UTC

AV detection:

21 of 29 (72.41%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=gzna4r7sjulb6rk2kivwvdqvgq7sk64m6iarop2ws3n4vwspajoa._file

Result

Malware family:

nanocore

Score:

10/10

Tags:

family:nanocore evasion keylogger persistence spyware stealer trojan

Link:

https://tria.ge/reports/201028-bvhcyvw58e/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Drops file in Program Files directory

Suspicious use of SetThreadContext

Adds Run key to start application

Checks whether UAC is enabled

NanoCore

Malware Config

C2 Extraction:

engr101.ddns.net:41205
engr101.hopto.org:41205

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Nanocore

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/365a0e47f24d161f455a522b6a8e15343f257b8cf201173f5696dbcada4f025c

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 Create hunting rule
Author:	abuse.ch

Rule name:	Nanocore Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Nanocore in memory
Reference:	internal research

Rule name:	nanocore_rat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	Nanocore_RAT_Feb18_1 Create hunting rule
Author:	Florian Roth
Description:	Detects Nanocore RAT
Reference:	Internal Research - T2T

Rule name:	Nanocore_RAT_Gen_2 Create hunting rule
Author:	Florian Roth
Description:	Detetcs the Nanocore RAT
Reference:	https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/