MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b3cc4d8429cfa934b85dd933dd9848adce458907bf5e3bab5e99e8a83c1966d4. 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: | b3cc4d8429cfa934b85dd933dd9848adce458907bf5e3bab5e99e8a83c1966d4 |
|---|---|
| SHA3-384 hash: | 73816ea32b467781ea83ac4b88fe9682f0cad1297d4ad24aa3b7e1ddf2a98c3c668c2e6101dd84bc5659a44df02ca75c |
| SHA1 hash: | 463454bae2db9f9b7d7f345e9c166c98c5a2c493 |
| MD5 hash: | 7ed7d1587399852632f2f7ae486b6e87 |
| humanhash: | sodium-pip-lactose-bacon |
| File name: | Purchase Order PDF pdf.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 982'528 bytes |
| First seen: | 2020-10-27 12:47:15 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:C7VFMdBe9vBKV4DR9CmstdnxokbGZszk/MRpg+QtuSmBGaPRikwM6c:ChF0e1BFUwkbGZIsMRmwSmBek5 |
| Threatray | 1'842 similar samples on MalwareBazaar |
| TLSH | 6A2519523A909950F169323BC26A821847F49F116693D337EDFF33AB0E33B2A79059D5 |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore RAT |
abuse_ch
Malspam distributing NanoCore:HELO: asgw02.ilcs.co.id
Sending IP: 103.19.80.81
From: Shreyas Ramesh <clara@ilcs.co.id>
Reply-To: paymenm@indoheavy.com
Subject: RE: RE: Re:Purchase Order RFQ-HL51L07
Attachment: Purchase Order PDF pdf.gz (contains "Purchase Order PDF pdf.exe")
NanoCore RAT C2:
windo.hopto.org
Intelligence
File Origin
# of uploads :
1
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Connection attempt 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
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Nanocore Rat
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)
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:
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2020-10-27 10:27:31 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 1'832 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore keylogger persistence spyware stealer trojan
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:
windo.hopto.org:1990
185.231.113.190:1990
185.231.113.190:1990
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
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 |
|---|---|
| Author: | jeFF0Falltrades |
| 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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