MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a828598f4c66e85305d93ce56bad4c27b7bd6a446eb9b9cec27d961b2591b95. 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


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a828598f4c66e85305d93ce56bad4c27b7bd6a446eb9b9cec27d961b2591b95
SHA3-384 hash: 7948df6dc9a0ed3ac899d589b4392057ab3d5dfe7834cbab76f819ebb16f7be9966ea1e5a96b46191c4fa2c43207a896
SHA1 hash: 243c1961e393aa5f7ca0dd48a91f951e6cadbb30
MD5 hash: e45fc1ce72759efbd73464ce89b535d1
humanhash: juliet-skylark-table-black
File name:Payment_Reminder_UnPaid_PDF.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:852'992 bytes
First seen:2020-07-21 18:48:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:QaNsQ3WkwhqPbFN03HxdB2fUQ178DotG990mkT0Rg2B1uef:9Puhyvwdsyoy0mkgG2B1ug
Threatray 1'565 similar samples on MalwareBazaar
TLSH 3E05E400E7B841DAD3FA0F35D6F0850C55B4AA5D97E2E6C61780F9BA5CE3FA44603E29
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: mail0.internationalfunraiser.monster
Sending IP: 104.168.169.84
From: Dropbox<contactsupport@internationalfunraiser.monster>
Reply-To: <bruce@hanshawsales.com>
Subject: Bruce Smith Sent You A Payment Reminder
Attachment: Payment_Reminder_UnPaid_PDF.zip (contains "Payment_Reminder_UnPaid_PDF.exe")

NanoCore RAT C2:
u870797.nvpn.to:3119 (185.244.29.158)

Pointing to nVpn:

% Information related to '185.244.29.0 - 185.244.29.255'

% Abuse contact for '185.244.29.0 - 185.244.29.255' is 'abuse@privacyfirst.sh'

inetnum: 185.244.29.0 - 185.244.29.255
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-KP
country: KP
descr: Wonsan, Kangwon-do
descr: Choson Minjujuui Inmin Konghwaguk
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: SUB-ALLOCATED PA
mnt-by: PRIVACYFIRST-MNT
created: 2018-01-31T19:41:57Z
last-modified: 2020-07-14T13:29:24Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/30370/
Detection(s):
SecuriteInfo.com.MSIL.GenKryptik.EOQO.17033.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Creating a process with a hidden window
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/393696
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 249136 Sample: Payment_Reminder_UnPaid_PDF.exe Startdate: 22/07/2020 Architecture: WINDOWS Score: 100 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for dropped file 2->42 44 8 other signatures 2->44 8 Payment_Reminder_UnPaid_PDF.exe 11 2->8         started        11 RegSvcs.exe 4 2->11         started        process3 file4 28 C:\Users\user\AppData\Roaming\Hmazyl.exe, PE32 8->28 dropped 30 C:\Users\user\AppData\Local\...\tmp2B24.tmp, XML 8->30 dropped 32 C:\...\Payment_Reminder_UnPaid_PDF.exe.log, ASCII 8->32 dropped 13 RegSvcs.exe 13 8->13         started        18 schtasks.exe 1 8->18         started        20 conhost.exe 11->20         started        process5 dnsIp6 36 u870797.nvpn.to 185.244.29.158, 3119, 49734 DAVID_CRAIGGG Netherlands 13->36 34 C:\Users\user\AppData\Roaming\...\run.dat, data 13->34 dropped 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->46 22 schtasks.exe 1 13->22         started        24 conhost.exe 18->24         started        file7 signatures8 process9 process10 26 conhost.exe 22->26         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2a828598f4c66e85305d93ce56bad4c27b7bd6a446eb9b9cec27d961b2591b95/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-21 18:50:08 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fkbilghuyzxikmc5sphfnowuyj5xxvvei3vzxhhme7mwdmszdokq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'555 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/200721-yz2ssg6qfj/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetThreadContext
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
u870797.nvpn.to:3119
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
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

zip 7cc55e36af8f08b8220cc495cb2b0428b31fe65995ca8cc9daf2c0ae44bfd6dd

NanoCore

Executable exe 2a828598f4c66e85305d93ce56bad4c27b7bd6a446eb9b9cec27d961b2591b95

(this sample)

  
Dropped by
MD5 1496e3748adf178a3ef357080f80d343
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/30370/
  
Dropped by
SHA256 7cc55e36af8f08b8220cc495cb2b0428b31fe65995ca8cc9daf2c0ae44bfd6dd

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