MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 29f8b2166231d28a854811843313dd081bd628d7eb5d58c45b9b3d443a928593. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 29f8b2166231d28a854811843313dd081bd628d7eb5d58c45b9b3d443a928593
SHA3-384 hash: 0a9eb76b4decc0b3f8f2905ed24c0aa7ea68529c412839bd2444bdd6ce0bb29e7ed605f566c60e43b995c753362d27ef
SHA1 hash: 51c087837a2725b8e5ad39d962168b68605d7c19
MD5 hash: f2cd75de1be62da47bf993a4aecdb32b
humanhash: low-pasta-blue-april
File name:Document.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'097'367 bytes
First seen:2020-08-06 05:35:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 24576:6NA3R5drXdtGOEQgx5Kr55xuF669SAEUpMY5aRcKXwZK:z5bGOEQgx+860jG2aMZK
Threatray 1'308 similar samples on MalwareBazaar
TLSH 18351242F7C14472F9332A350E29F721A97D7A201F24CB6FB3D00D6D9A35691A635BA3
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: mailer-0104.inet.vn
Sending IP: 103.57.223.50
From: huong.tranthu2@sbv.gov.vn <huong.tranthu2@mhfoods.vn>
Subject: Re: Bank Transfer Notification
Attachment: Document.z (contains "Document.exe")

NanoCore RAT C2:
johnsuccess18.ddns.net:52943

Intelligence

File Origin
# of uploads :
1
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/40055/
Detection(s):
SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file
Sending a UDP request
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Launching a process
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Deleting a recently created file
DNS request
Blocking a possibility to launch for the Windows Task Manager (taskmgr)
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
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/412112
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Connects to many ports of the same IP (likely port scanning)
Detected Nanocore Rat
Disables the Windows task manager (taskmgr)
Drops PE files with a suspicious file extension
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
Malicious sample detected (through community Yara rule)
Protects its processes via BreakOnTermination flag
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Sleep loop found (likely to delay execution)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 258296 Sample: Document.exe Startdate: 06/08/2020 Architecture: WINDOWS Score: 100 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Sigma detected: Scheduled temp file as task from temp location 2->67 69 9 other signatures 2->69 9 Document.exe 35 2->9         started        13 rbxi.pif 2->13         started        15 RegSvcs.exe 2->15         started        17 2 other processes 2->17 process3 file4 49 C:\Users\user\40260595\rbxi.pif, PE32 9->49 dropped 79 Drops PE files with a suspicious file extension 9->79 19 rbxi.pif 2 2 9->19         started        81 Writes to foreign memory regions 13->81 83 Allocates memory in foreign processes 13->83 85 Sleep loop found (likely to delay execution) 13->85 87 Injects a PE file into a foreign processes 13->87 22 mshta.exe 13->22         started        24 conhost.exe 15->24         started        26 conhost.exe 17->26         started        28 conhost.exe 17->28         started        signatures5 process6 signatures7 71 Writes to foreign memory regions 19->71 73 Allocates memory in foreign processes 19->73 75 Sleep loop found (likely to delay execution) 19->75 77 2 other signatures 19->77 30 RegSvcs.exe 19->30         started        35 mshta.exe 19->35         started        37 mshta.exe 19->37         started        39 5 other processes 19->39 process8 dnsIp9 57 johnsuccess18.ddns.net 185.165.153.114, 49737, 52943 DAVID_CRAIGGG Netherlands 30->57 51 C:\Users\user\AppData\Roaming\...\run.dat, data 30->51 dropped 53 C:\Users\user\AppData\Local\...\tmpA381.tmp, XML 30->53 dropped 55 C:\Program Files (x86)\...\dhcpmon.exe, PE32 30->55 dropped 59 Protects its processes via BreakOnTermination flag 30->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->61 41 schtasks.exe 30->41         started        43 schtasks.exe 30->43         started        file10 signatures11 process12 process13 45 conhost.exe 41->45         started        47 conhost.exe 43->47         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/29f8b2166231d28a854811843313dd081bd628d7eb5d58c45b9b3d443a928593/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 23:51:16 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fh4leftcghjivbkicgcdge65ban5mkgx5novrrc3tm6uiousqwjq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'298 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion persistence keylogger trojan stealer spyware family:nanocore
Link:
https://tria.ge/reports/200806-eb14ndmjaa/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Creates scheduled task(s)
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
Loads dropped DLL
Executes dropped EXE
Disables Task Manager via registry modification
NanoCore
Malware Config
C2 Extraction:
johnsuccess18.ddns.net:52943
185.165.153.114:52943
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/29f8b2166231d28a854811843313dd081bd628d7eb5d58c45b9b3d443a928593

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

z d1ac193860cf4acea702ffa38bde6c1742b2e37d0f78eb591ff4d44a10a6fba1

NanoCore

Executable exe 29f8b2166231d28a854811843313dd081bd628d7eb5d58c45b9b3d443a928593

(this sample)

  
Dropped by
MD5 4fbafa5149664b5c1dc5af1b15df5469
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/40055/
  
Dropped by
SHA256 d1ac193860cf4acea702ffa38bde6c1742b2e37d0f78eb591ff4d44a10a6fba1

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