MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0248797389854c9ca071aaf4e3c5e27d4a071524505a8b6afb38c5ab05fbd141. 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 1 YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0248797389854c9ca071aaf4e3c5e27d4a071524505a8b6afb38c5ab05fbd141
SHA3-384 hash: 86a3e33392fab359b66f4084ab6c21891391a2dd740966078ac4b7573838283474f7b9adccd21e714a75d603d65dc98a
SHA1 hash: e878430aca070b4001227281fc578d3e2c122d58
MD5 hash: 5cf7843b7bf6a27ff84c42f0c8c9e6e0
humanhash: nineteen-early-nebraska-seventeen
File name:Payment Advice Reference0000 docx.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:930'304 bytes
First seen:2021-05-27 14:55:08 UTC
Last seen:2021-05-27 15:46:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:E74FFFlONmjSfOHIXig/gqTNCIGb86bjT1lT:E74FrUNmaOvgeIGb8KdN
TLSH A215E126CE858E79C1CC19708131275A3F6B6EC2A973D6CDC9C9F87D6C36298963817C
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
31.210.20.60:54920

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
31.210.20.60:54920 https://threatfox.abuse.ch/ioc/65548/

Intelligence

File Origin
# of uploads :
2
# of downloads :
146
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment Advice Reference0000 docx.exe
Verdict:
Malicious activity
Analysis date:
2021-05-27 15:50:33 UTC
Tags:
rat nanocore trojan
Link:
https://app.any.run/tasks/5d35bcd5-fb71-416c-a2a2-258efd2dd7cb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/162731/
Detection(s):
SecuriteInfo.com.Artemis5CF7843B7BF6.23188.26101.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a window
Creating a file in the %AppData% subdirectories
DNS request
Sending a custom TCP request
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/793276
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Detected Nanocore Rat
Found malware configuration
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 425672 Sample: Payment Advice Reference000... Startdate: 27/05/2021 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 9 other signatures 2->45 6 Payment Advice Reference0000 docx.exe 1 4 2->6         started        10 winscan.exe 1 2->10         started        12 winscan.exe 2->12         started        process3 file4 25 C:\Users\user\AppData\Roaming\winscan.exe, PE32 6->25 dropped 27 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 6->27 dropped 29 C:\Users\user\...\winscan.exe:Zone.Identifier, ASCII 6->29 dropped 31 Payment Advice Ref...ce0000 docx.exe.log, ASCII 6->31 dropped 47 Writes to foreign memory regions 6->47 49 Allocates memory in foreign processes 6->49 51 Injects a PE file into a foreign processes 6->51 14 RegAsm.exe 8 6->14         started        19 RegAsm.exe 6->19         started        53 Machine Learning detection for dropped file 10->53 21 RegAsm.exe 3 10->21         started        23 RegAsm.exe 2 12->23         started        signatures5 process6 dnsIp7 35 dbep.duckdns.org 31.210.20.60, 49721, 49722, 49723 PLUSSERVER-ASN1DE Netherlands 14->35 33 C:\Users\user\AppData\Roaming\...\run.dat, data 14->33 dropped 37 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->37 file8 signatures9
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0248797389854c9ca071aaf4e3c5e27d4a071524505a8b6afb38c5ab05fbd141/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ajehs44jqvgjzidrvl2ohrpcpvfaofjekbniw2x3hdc2wbp32faq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210527-rgwvrvqmdj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
dbep.duckdns.org:54920
warqazx.strangled.net:54920
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/0248797389854c9ca071aaf4e3c5e27d4a071524505a8b6afb38c5ab05fbd141

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/
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Cape
Cape
https://www.capesandbox.com/analysis/162731/

Comments