MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 786e5ea538d875c628433d6cf45abd9559ede017b01b3fca8eb3bfc6dbc66f12. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 786e5ea538d875c628433d6cf45abd9559ede017b01b3fca8eb3bfc6dbc66f12
SHA3-384 hash: de8b32fa7fe6ac31561b803d9c925d2af7fb8bd6c8fe3c896c5625e48fc880d503ff3f164496f94a5dae974a5a869d58
SHA1 hash: f7996d57aaa446cab624918d78aafef8e6581f9c
MD5 hash: 47ef40190734b261014442ea5e87ff9b
humanhash: sad-romeo-butter-ceiling
File name:New order.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:495'616 bytes
First seen:2020-08-10 09:58:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:PhN4xLfQTzvsSf9ZKYLljXO3UbwFFsAU1:PYxjqzX3LljXOEU8AU
Threatray 1'130 similar samples on MalwareBazaar
TLSH AEB49D1C8D5C0E5BEA6C367BC215180D12F99D9523F1F5CE2FB2329643BA7E243B1269
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: mail.balticbeach.lv
Sending IP: 195.13.167.102
From: Yang Young <pmanager105@hotmail.com>
Reply-To: nicolaemanea@yandex.com
Subject: re:Re:Re : Purchase Order
Attachment: New order.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/42659/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
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
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/416733
Signature
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)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 260791 Sample: New order.exe Startdate: 10/08/2020 Architecture: WINDOWS Score: 100 67 bbenson.ddns.net 2->67 73 Malicious sample detected (through community Yara rule) 2->73 75 Sigma detected: Scheduled temp file as task from temp location 2->75 77 Sigma detected: NanoCore 2->77 79 9 other signatures 2->79 9 New order.exe 7 2->9         started        13 dhcpmon.exe 2->13         started        16 New order.exe 4 2->16         started        18 dhcpmon.exe 3 2->18         started        signatures3 process4 dnsIp5 59 C:\Users\user\AppData\...\JRBmDfUlRb.exe, PE32 9->59 dropped 61 C:\Users\...\JRBmDfUlRb.exe:Zone.Identifier, ASCII 9->61 dropped 63 C:\Users\user\AppData\Local\...\tmpB7E8.tmp, XML 9->63 dropped 65 C:\Users\user\AppData\...65ew order.exe.log, ASCII 9->65 dropped 83 Injects a PE file into a foreign processes 9->83 20 New order.exe 1 12 9->20         started        25 schtasks.exe 1 9->25         started        27 New order.exe 9->27         started        37 2 other processes 9->37 71 192.168.2.1 unknown unknown 13->71 29 schtasks.exe 13->29         started        31 dhcpmon.exe 13->31         started        33 schtasks.exe 1 16->33         started        35 New order.exe 16->35         started        file6 signatures7 process8 dnsIp9 69 bbenson.ddns.net 185.244.30.6, 3080, 49715, 49716 DAVID_CRAIGGG Netherlands 20->69 53 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->53 dropped 55 C:\Users\user\AppData\Roaming\...\run.dat, data 20->55 dropped 57 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 20->57 dropped 81 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->81 39 schtasks.exe 1 20->39         started        41 schtasks.exe 1 20->41         started        43 conhost.exe 25->43         started        45 conhost.exe 29->45         started        47 conhost.exe 33->47         started        file10 signatures11 process12 process13 49 conhost.exe 39->49         started        51 conhost.exe 41->51         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/786e5ea538d875c628433d6cf45abd9559ede017b01b3fca8eb3bfc6dbc66f12/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-10 05:41:07 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pbxf5jjy3b24mkcdhvwpiwv5svm63yaxwant7suowo74nw6gn4ja._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'120 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore persistence
Link:
https://tria.ge/reports/200810-e1wzqv137s/
Behaviour
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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:
bbenson.ddns.net:3080
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Starter
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/786e5ea538d875c628433d6cf45abd9559ede017b01b3fca8eb3bfc6dbc66f12

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/
Rule name:win_nanocore_w0
Create hunting rule
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.

Malspam

NanoCore

Executable exe 786e5ea538d875c628433d6cf45abd9559ede017b01b3fca8eb3bfc6dbc66f12

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42659/

Comments