MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7. 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: 4


Intelligence 4 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7
SHA3-384 hash: 1a09e3b7f2e1909c14c73b521f5e071e11582633ccaa8d38de11806b8a95ac3899c2222a149ca56e791864b10a2e1a33
SHA1 hash: 5442a2b8f695655b73ec925316bf63f127265688
MD5 hash: e0e097a9ed8b33a5e66a9ff58a4a2bdf
humanhash: cup-september-video-india
File name:coronna.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:496'640 bytes
First seen:2020-04-04 17:17:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:c2zalBlYTX7QvsqwCt0lOaFCn8Os3Kv1i90SkgTXonkGDg1GNJxT/mmHy:c2IBqTX7Q4jO2C8b6w6VgL1GD+GRC
Threatray 1'113 similar samples on MalwareBazaar
TLSH 54B49E3529EA016AE3794BFC5BC0A05D5665BF632516E2FD1A703E8736F274C888133E
Reporter abuse_ch
Tags:COVID-19 exe NanoCore RAT


Avatar
abuse_ch
COVID-19 themed malspam distributing NanoCore RAT:

HELO: barracuda.uni-corvinus.hu
Sending IP: 146.110.3.32
From: C.D.C Coronavirus <info22@Coronavirus.com>
Subject: Coronavirus update (COVID-19) XXX your neighbors tested positive.
Attachment: Coronavirus_Update.xlsm

Payload URL (NanoCore RAT):
http://185.208.211.67/case/coronna.exe

NanoCore RAT C2:
54822.duckdns.org:54822 (137.74.80.220)

Intelligence

File Origin
# of uploads :
1
# of downloads :
89
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Dropper.Nanocore-7532662-0
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-04-04 17:35:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
26 of 31 (83.87%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k4luzeipji34c3hczhmevla4usdsibutkxbhcpw7j7wxp23mdh3q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'103 additional samples on MalwareBazaar
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

Excel file xlsm db41aeaea5cbc6bf9efc53685b28bf2495f12227d006bb34f8733c1e5bfff7cd

NanoCore

Executable exe 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/334949/
  
Dropped by
MD5 86d4ede2dd447fcde284c6f112187bf5
  
Dropped by
SHA256 db41aeaea5cbc6bf9efc53685b28bf2495f12227d006bb34f8733c1e5bfff7cd
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments