MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b20265f6aaff86503f7be16f8b9215763a9bd166135e506191e4212afbfca4ed. 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: 9
| SHA256 hash: | b20265f6aaff86503f7be16f8b9215763a9bd166135e506191e4212afbfca4ed |
|---|---|
| SHA3-384 hash: | 4b8f1a61b5b83a8be571136d5ed110d46b56b6fcdf00e4fb79a49f9c4e7d850f977447c539f70cf97ecd29ee74263e21 |
| SHA1 hash: | 11e5f74fb3a563a9160b35a4769397014f87ac36 |
| MD5 hash: | 9c08ce13b2f7974c0802b3e8b0545c93 |
| humanhash: | nuts-pizza-jig-december |
| File name: | Receipt.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 1'050'624 bytes |
| First seen: | 2020-10-10 07:11:05 UTC |
| Last seen: | 2020-10-10 08:04:44 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 24576:XDzjATdlpdrGssPfq+XBnK5IMy9CVYxhL5:XHUTdvossX/RK5I97 |
| Threatray | 941 similar samples on MalwareBazaar |
| TLSH | F725DF88B151B19EC7D6B1319F64DCB8A7503C6E9A1A060770F33F5FBAFC5439A205A2 |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore nVpn RAT |
abuse_ch
Malspam distributing NanoCore:HELO: mail.moenepa.cf
Sending IP: 160.251.7.172
From: Sales Departmet <admin@moenepa.cf>
Subject: Thank you for your payment!
Attachment: Receipt.img (contains "Receipt.exe")
NanoCore RAT C2:
u852117.nvpn.to:5638 (185.244.30.163)
Pointing to nVpn:
% Information related to '185.244.30.0 - 185.244.30.255'
% Abuse contact for '185.244.30.0 - 185.244.30.255' is 'abuse@privacyfirst.sh'
inetnum: 185.244.30.0 - 185.244.30.255
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.
netname: PRIVACYFIRST-HU
country: HU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2019-10-29T14:10:27Z
last-modified: 2020-10-07T21:39:48Z
source: RIPE
Intelligence
File Origin
# of uploads :
2
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Launching a process
Creating a process with a hidden window
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
PE file contains section with special chars
PE file has nameless sections
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Detection:
nanocore
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-10-09 19:09:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
23 of 29 (79.31%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
unknown
Similar samples:
+ 931 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
keylogger trojan stealer spyware family:nanocore
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
NanoCore
Malware Config
C2 Extraction:
u852117.nvpn.to:5638
Unpacked files
SH256 hash:
b20265f6aaff86503f7be16f8b9215763a9bd166135e506191e4212afbfca4ed
MD5 hash:
9c08ce13b2f7974c0802b3e8b0545c93
SHA1 hash:
11e5f74fb3a563a9160b35a4769397014f87ac36
SH256 hash:
6c1581cc0950c5018833ffc0cbc44f45afe569ad46e0b4685fabe734c47ba971
MD5 hash:
95abcc15c5e18f99a01d49269899e1aa
SHA1 hash:
20edd658a2f44486c2a36a1b0a0dedf17336e01b
SH256 hash:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
SH256 hash:
2682ab3fbe024e7c4a76a61ac03f6d8f49f1628124056bc82f2a001ccc93a147
MD5 hash:
13ef721172488706899f5004791322f5
SHA1 hash:
97860fe24817563d0ed443cb3aeaf1f2bba827e8
Detections:
win_nanocore_w0
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
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 |
|---|---|
| Author: | abuse.ch |
| Rule name: | Nanocore |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | Nanocore_RAT_Feb18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Gen_2 |
|---|---|
| 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 |
|---|---|
| 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
Delivery method
Distributed via e-mail attachment
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.