MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 708e8ea4397b44ad8e1ea8ef53b0697dec1e09b6c454c7bf4654120e04a903f8. 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
| SHA256 hash: | 708e8ea4397b44ad8e1ea8ef53b0697dec1e09b6c454c7bf4654120e04a903f8 |
|---|---|
| SHA3-384 hash: | 49a13192af2175c757917b935041e1b4d5d23be860e0a2aec4d38de00e8b1dd4769f389ce9fbdf6ff490655fa74ae755 |
| SHA1 hash: | 65330784185defd5c70579e697565828805332b3 |
| MD5 hash: | d400f891031192908e80635dd6ac9cee |
| humanhash: | magazine-cardinal-orange-hamper |
| File name: | uK4c13RrZFN6qJo.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 535'040 bytes |
| First seen: | 2020-08-27 05:44:43 UTC |
| Last seen: | 2020-08-27 07:19:21 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 12288:bx69nc8r3qhLPLuRS0KTXNDMyErf0ChHH:k5Tr3qpuRSfTX3ErfrH |
| Threatray | 1'116 similar samples on MalwareBazaar |
| TLSH | A5B4126403BCCF08DAEF1FF9487D324043F1B9969594D3999B98D2A734D6BA0CA21763 |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore nVpn RAT |
abuse_ch
Malspam distributing NanoCore:HELO: gmail.com
Sending IP: 209.58.149.66
From: Christy Kwan <nadotubesales@gmail.com>
Subject: Check Bank Details
Attachment: INVOICE.Z (contains "uK4c13RrZFN6qJo.exe")
NanoCore RAT C2:
185.140.53.28:1985
Hosted on nVpn:
% Information related to '185.140.53.0 - 185.140.53.255'
% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'
inetnum: 185.140.53.0 - 185.140.53.255
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-EU3
country: EU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-07-28T20:56:03Z
source: RIPE
Intelligence
File Origin
# of uploads :
2
# of downloads :
186
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
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
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
NanoCore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Binary contains a suspicious time stamp
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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
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 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.FormBook
Status:
Malicious
First seen:
2020-08-27 05:46:08 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 1'106 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
keylogger trojan stealer spyware family:nanocore persistence
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
NanoCore
Malware Config
C2 Extraction:
185.140.53.28:1985
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
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
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