MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d. 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: cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d
SHA3-384 hash: c606764bc289c91b360228a1704693bbaf9c83d5f5d82b956ef105c91afb79dca826719f17623fc032cb22e49522dfaf
SHA1 hash: d7a5bcb7b7b81d75ab5e9da8a2244b1b7cd6787a
MD5 hash: 539d718ff89176e3f3277d71b055242d
humanhash: arizona-magnesium-november-triple
File name:URGENT #RFQ 102720.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:509'440 bytes
First seen:2020-10-27 16:48:06 UTC
Last seen:2020-10-27 18:37:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:pV2iHbfWY6wIdf1wKPmySPh5aTgi4HoF0ltjnL03Jq8HcD+jr9NodlJ:Z7fW91f1wAEhMTgi4FnjQ3Uuc6jeJ
Threatray 2'005 similar samples on MalwareBazaar
TLSH 55B401607691BD9FC987CE7351A85C60E7B0256F430FE24AC0737BE8898D6E68F505E2
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: webmail.indarico.it
Sending IP: 81.29.203.198
From: Sales Director <sales@doosan-group.com>
Subject: URGENT #RFQ
Attachment: URGENT RFQ 102720.zip (contains "URGENT #RFQ 102720.exe")

NanoCore RAT C2:
185.140.53.251:1995

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-BE
country: BE
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: 2020-10-02T20:59:33Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80050/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.27889.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Launching a process
Deleting a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Connection attempt to an infection source
Enabling autorun by creating a file
Result
Threat name:
Nanocore MailPassView
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/514061
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Found malware configuration
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected MailPassView
Yara detected Nanocore RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306147 Sample: URGENT #RFQ 102720.exe Startdate: 27/10/2020 Architecture: WINDOWS Score: 100 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Multi AV Scanner detection for dropped file 2->56 58 13 other signatures 2->58 8 URGENT #RFQ 102720.exe 3 2->8         started        11 dhcpmon.exe 3 2->11         started        13 dhcpmon.exe 2 2->13         started        15 URGENT #RFQ 102720.exe 2 2->15         started        process3 signatures4 62 Injects a PE file into a foreign processes 8->62 17 URGENT #RFQ 102720.exe 1 17 8->17         started        22 dhcpmon.exe 2 11->22         started        24 dhcpmon.exe 13->24         started        26 URGENT #RFQ 102720.exe 2 15->26         started        process5 dnsIp6 48 185.140.53.251, 1995, 49729 DAVID_CRAIGGG Sweden 17->48 42 C:\Program Files (x86)\...\dhcpmon.exe, PE32 17->42 dropped 44 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 17->44 dropped 46 C:\Users\user\AppData\Local\...\tmp83C4.tmp, XML 17->46 dropped 60 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->60 28 vbc.exe 17->28         started        31 vbc.exe 17->31         started        34 schtasks.exe 1 17->34         started        36 schtasks.exe 1 17->36         started        file7 signatures8 process9 dnsIp10 64 Tries to steal Mail credentials (via file registry) 28->64 66 Tries to steal Instant Messenger accounts or passwords 28->66 68 Tries to steal Mail credentials (via file access) 28->68 50 192.168.2.1 unknown unknown 31->50 70 Tries to harvest and steal browser information (history, passwords, etc) 31->70 38 conhost.exe 34->38         started        40 conhost.exe 36->40         started        signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d/
Threat name:
ByteCode-MSIL.Infostealer.Stelega
Create hunting rule
Status:
Malicious
First seen:
2020-10-27 15:45:50 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zts5tzh5lsurijiq6ozb2cttsbqxd2ikqfksbgcwq7o6co3omq6q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
0a61e8b840644e0fb6739996a0d65da3b8b7f40478e96afbc889d9c7bf65a73f
NanoCore
1a6530f34958885dc32b47f8995d4af7598b1fcdfdd19345c991b3a975bb5ce9
NanoCore
6ce920a9bc60cc2388297a52758765c835b0ee670b42e5b965ae0731efcf24ec
NanoCore
6f135861ec43d793a4951f05009c146c70849534bd8486fa42be291b9820650d
NanoCore
7cb987616a272b3f90faa060b9671d72cdb3c2fecd398b9c50fac1449379282b
NanoCore
9bf00370d7ce501407903b0435920664abc86712b94263575e72ad9aa98022de
NanoCore
a6fa24e0210cf4e792b983adf65416871b6a4792fbd5ba3ccaf15484159c776b
NanoCore
a9e29436ef50f76f0d8c46e62205491e8acbea0e22f38fcbd5d38719264897d1
NanoCore
b0896cbac640a28e5f9f597d546534fb06175652f6c8d4232b65b22a1743be51
NanoCore
dedd4035d172ab0099d8803fcad64fe025d77f5520099deb74b6121a3c88e229
NanoCore
+ 1'995 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/201027-aq61m9gwkn/
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
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
185.140.53.251:1995
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d

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 2d8c0ab90bb231e276f5f3cf44de4064a6d78cfb8c9a0eb121f3454b747bb84c

NanoCore

Executable exe cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d

(this sample)

  
Dropped by
MD5 04f764fa2862e93c705e5993692ceced
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2d8c0ab90bb231e276f5f3cf44de4064a6d78cfb8c9a0eb121f3454b747bb84c
Cape
Cape
https://www.capesandbox.com/analysis/80050/

Comments