MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 320b9847b87acc72f35b69c9767584a8627d6cce512d65d45ca5bbc62b94230e. 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 5 File information Comments

SHA256 hash:	320b9847b87acc72f35b69c9767584a8627d6cce512d65d45ca5bbc62b94230e
SHA3-384 hash:	7458d49c621bae13ea038f364f6668a882b946b86748b7f50eeb86724e5832322defd47beacdc6acd66fbd19497a58c5
SHA1 hash:	61d5174d14e9c5fce2e441619d7064c67fc969ac
MD5 hash:	0b5122869b9f16726f19a5f22d32eaad
humanhash:	nevada-coffee-kentucky-black
File name:	0RY9t35YcXOZNbf.exe
Download:	download sample
Signature	NanoCore Create hunting rule
File size:	608'256 bytes
First seen:	2020-07-29 05:28:23 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:yknnbh+oWv7Y7/dGqARazs7rvHT3EmcQHz4:RbEoWDY7/dGldbHDTo
Threatray	112 similar samples on MalwareBazaar
TLSH	C8D4B055B644A40FC2BA4178E2DC1708DBFC8EA6411B93C678E6F7A71EFA35397012B1
Reporter	abuse_ch
Tags:	exe NanoCore nVpn RAT

abuse_ch

Malspam distributing NanoCore:

HELO: outsmtp03.sadecehosting.com
Sending IP: 78.135.113.146
From: Account Payable <ch3rrysamuel@yandex.com>
Subject: PAYMENT/SWIFT
Attachment: SWIFT COPY.RAR (contains "0RY9t35YcXOZNbf.exe")

NanoCore RAT C2:
79.134.225.71:1985

Hosted on nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/34137/

Detection(s):

SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Creating a process with a hidden window

Deleting a recently created file

Creating a file

Creating a file in the %AppData% subdirectories

Creating a file in the Program Files subdirectories

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

Sending a TCP request to an infection source

Unauthorized injection to a system process

Result

Threat name:

Nanocore

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/401208

Signature

.NET source code contains potential unpacker

Detected Nanocore Rat

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

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: NanoCore

Sigma detected: Scheduled temp file as task from temp location

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 schtasks.exe or at.exe to add and modify task schedules

Yara detected AntiVM_3

Yara detected Nanocore RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

nanocore

Link:

https://mwdb.cert.pl/sample/320b9847b87acc72f35b69c9767584a8627d6cce512d65d45ca5bbc62b94230e/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-07-29 03:37:04 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=gifzqr5yplghf423nhexm5mevbrh23gokewwlvc4uw54mk4uemha._file

Verdict:

unknown

Result

Malware family:

nanocore

Score:

10/10

Tags:

evasion trojan keylogger stealer spyware family:nanocore persistence

Link:

https://tria.ge/reports/200729-kwsrh39z9n/

Behaviour

Suspicious behavior: GetForegroundWindowSpam

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Drops file in Program Files directory

Suspicious use of SetThreadContext

Checks whether UAC is enabled

Adds Run key to start application

NanoCore

Malware Config

C2 Extraction:

79.134.225.71:1985

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

Threat name:

Eldorado

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/320b9847b87acc72f35b69c9767584a8627d6cce512d65d45ca5bbc62b94230e

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_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/