MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4. 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: 2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4
SHA3-384 hash: 0d4d14f9b740e98f5a1e751c5d98d11bd3ce7d3497cdabd2e26fd93af8bb74b48cf1ea2d5727f9864323fbea0d4bfb39
SHA1 hash: ab058cd799f3945d394ab88abff4f237eb5cd54d
MD5 hash: b38da63125504acc8e034a8feadc6000
humanhash: july-fifteen-red-eight
File name:NUEVO PO # 7609EF66,pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:446'224 bytes
First seen:2020-10-14 15:09:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'477 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:bwDja4+EBXPF8ozYeU+68jO0hIQGNK/2/iGgGiMkIKbQQZZKdM8sScR9ApqcAfR6:WxK+nTGNaG29AqSjpPeRUfZ
Threatray 1'135 similar samples on MalwareBazaar
TLSH AF94460A7259CF51C43F10B8C997C1F593B37DB9DD488FE326C9BE9674B12852A06A83
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: plesk1.enpatagonia.net
Sending IP: 209.126.124.211
From: BOMI DE CHILE <sales@bomigroup.com>
Subject: NUEVO PO # 7609EF66
Attachment: NUEVO PO 7609EF66,pdf.iso (contains "NUEVO PO # 7609EF66,pdf.exe")

NanoCore RAT C2:
godfavour234.ddns.net:3431 (79.134.225.76)

Pointing to nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
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.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE


Intelligence

File Origin
# of uploads :
1
# of downloads :
87
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/70847/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Adding an access-denied ACE
Creating a window
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Adding exclusions to Windows Defender
Enabling autorun
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/491190
Signature
Adds a directory exclusion to Windows Defender
Connects to a pastebin service (likely for C&C)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Detected Nanocore Rat
Drops PE files to the startup folder
Found malware configuration
Hides threads from debuggers
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 dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 298087 Sample: NUEVO PO # 7609EF66,pdf.exe Startdate: 14/10/2020 Architecture: WINDOWS Score: 100 68 godfavour234.ddns.net 2->68 70 hastebin.com 2->70 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 Multi AV Scanner detection for dropped file 2->84 86 13 other signatures 2->86 9 NUEVO PO # 7609EF66,pdf.exe 24 6 2->9         started        14 NUEVO PO # 7609EF66,pdf.exe 2->14         started        16 NUEVO PO # 7609EF66,pdf.exe 2->16         started        18 NUEVO PO # 7609EF66,pdf.exe 2->18         started        signatures3 process4 dnsIp5 74 pastebin.com 104.23.98.190, 443, 49749 CLOUDFLARENETUS United States 9->74 76 hastebin.com 104.24.126.89, 443, 49722, 49762 CLOUDFLARENETUS United States 9->76 64 C:\Users\user\...64UEVO PO # 7609EF66,pdf.exe, PE32 9->64 dropped 66 NUEVO PO # 7609EF6...exe:Zone.Identifier, ASCII 9->66 dropped 88 Creates an undocumented autostart registry key 9->88 90 Creates autostart registry keys with suspicious names 9->90 92 Creates multiple autostart registry keys 9->92 94 3 other signatures 9->94 20 NUEVO PO # 7609EF66,pdf.exe 9->20         started        24 powershell.exe 25 9->24         started        26 powershell.exe 24 9->26         started        32 4 other processes 9->32 78 192.168.2.1 unknown unknown 14->78 28 timeout.exe 14->28         started        30 timeout.exe 16->30         started        file6 signatures7 process8 dnsIp9 72 godfavour234.ddns.net 79.134.225.76, 3431, 49758, 49763 FINK-TELECOM-SERVICESCH Switzerland 20->72 56 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->56 dropped 58 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 20->58 dropped 60 C:\Users\user\AppData\Local\...\tmp74DB.tmp, XML 20->60 dropped 62 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 20->62 dropped 34 schtasks.exe 20->34         started        36 schtasks.exe 20->36         started        38 conhost.exe 24->38         started        40 conhost.exe 26->40         started        42 conhost.exe 28->42         started        44 conhost.exe 30->44         started        46 conhost.exe 32->46         started        48 conhost.exe 32->48         started        50 conhost.exe 32->50         started        file10 process11 process12 52 conhost.exe 34->52         started        54 conhost.exe 36->54         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-10-14 01:01:40 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fpyitssvpkpukyklrru5d2m4fbs4ztqw2vrd2q7qlbbb3xiw4psa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'125 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion trojan persistence keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/201014-lh989xfdm2/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Legitimate hosting services abused for malware hosting/C2
Drops startup file
Windows security modification
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
NanoCore
Windows security bypass
Turns off Windows Defender SpyNet reporting
Malware Config
C2 Extraction:
godfavour234.ddns.net:3431
79.134.225.76:3431
Unpacked files
SH256 hash:
2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4
MD5 hash:
b38da63125504acc8e034a8feadc6000
SHA1 hash:
ab058cd799f3945d394ab88abff4f237eb5cd54d
Link:
https://www.unpac.me/results/9b2d37cf-9c4c-47cb-8753-f5202392fee8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
BO
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4

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

iso 8108c1b8ab90330b42d1097bd7aa2f49163c4c1140cba33a70d5164674c016e0

NanoCore

Executable exe 2bf089ca557a9f45614b8c69d1e99c2865ccce16d5623d43f058421ddd16e3e4

(this sample)

  
Dropped by
MD5 546498da853f5068700763ad369fb6f2
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 8108c1b8ab90330b42d1097bd7aa2f49163c4c1140cba33a70d5164674c016e0
Cape
Cape
https://www.capesandbox.com/analysis/70847/

Comments