MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 04d57be00e1edddcfd5cd6088b4eec44591c6f0a5f9e6a13b9f90e66a24ccc25. 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: | 04d57be00e1edddcfd5cd6088b4eec44591c6f0a5f9e6a13b9f90e66a24ccc25 |
|---|---|
| SHA3-384 hash: | e3f4c55a57320b378d6838d99aef63eb104675ec75e1c0c480aa198ded08989854d569c0ff500c252eb77ff28e666f18 |
| SHA1 hash: | a19f727211c5120a482af60dfca7042f181f5e3a |
| MD5 hash: | 96197942f6e4fb122810a1188781d9a1 |
| humanhash: | hawaii-batman-neptune-dakota |
| File name: | PostNL klant verzendinformatie document doc.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 512'512 bytes |
| First seen: | 2020-07-16 08:41:30 UTC |
| Last seen: | 2020-07-16 10:05:34 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:lzU4FGvrH2k4zUr5SgDGNecx4SVqdjCrHXvjIHSQ9mA3293+jMS7Tg:lNFGuiixbVmpH79 |
| Threatray | 4'365 similar samples on MalwareBazaar |
| TLSH | 39B46ACC3910719EC85E8D768964DC30AA206C66F6FBD20763C36E9FB93D596CF011A2 |
| Reporter |  abuse_ch |
| Tags: | exe geo NanoCore NLD nVpn RAT |
abuse_ch
Malspam distributing NanoCore:HELO: server.naturalplus.ro
Sending IP: 31.14.14.99
From: PostNL <no-reply@posta.hu>
Subject: Aw:Aankomst van pakket
Attachment: PostNL klant verzendinformatie document doc.arj (contains "PostNL klant verzendinformatie document doc.exe")
NanoCore RAT C2:
postnl.duckdns.org:1969 (194.5.98.28)
Pointing to nVpn:
% Information related to '194.5.98.0 - 194.5.98.255'
% Abuse contact for '194.5.98.0 - 194.5.98.255' is 'abuse@privacyfirst.sh'
inetnum: 194.5.98.0 - 194.5.98.255
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-NOR
country: NO
descr: Sandefjord
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2019-04-26T16:42:54Z
last-modified: 2020-07-14T18:04:10Z
source: RIPE
Intelligence
File Origin
# of uploads :
2
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Initial sample is a PE file and has a suspicious name
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
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:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-07-16 08:43:05 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 4'355 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore
Behaviour
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks whether UAC is enabled
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NanoCore
Malware Config
C2 Extraction:
postnl.duckdns.org:1969
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | CAP_HookExKeylogger |
|---|---|
| Author: | Brian C. Bell -- @biebsmalwareguy |
| Reference: | https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar |
| 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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