MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 db41aeaea5cbc6bf9efc53685b28bf2495f12227d006bb34f8733c1e5bfff7cd. 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: 3


Intelligence 3 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: db41aeaea5cbc6bf9efc53685b28bf2495f12227d006bb34f8733c1e5bfff7cd
SHA3-384 hash: 423e04c4c20a811159a852d4d36391328b1f99453726a3ec5c9f39be5abde19df7269da45d846889ff94848a319fd803
SHA1 hash: ba5ffa5523c9c77230e2195c1100d375a187ea93
MD5 hash: 86d4ede2dd447fcde284c6f112187bf5
humanhash: mississippi-pluto-east-earth
File name:Coronavirus_Update.xlsm
Download: download sample
Signature NanoCore
Create hunting rule
File size:13'434 bytes
First seen:2020-04-04 17:17:48 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 192:HESf66BkcxaFUlbVvevUqzQXpS0VUR08TRv269+UZCh1Bdc3ZqZ4w3tajr2:HEt6VKUlM9z6peC8TExDLc3Zu4uta+
TLSH A8529E4DF8A1B81AC233407D52C900F2B65C9256874938D67E71D53BA2412EF068B6DF
Reporter abuse_ch
Tags:COVID-19 NanoCore RAT xlsm


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 :
90
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.ExecFuncDepthNestHopeIsDangerousForAMiscreantToHave.20200403.UNOFFICIAL
Create hunting rule

Xls.Dropper.Agent-7653076-0
Create hunting rule

Gathering data
Threat name:
Document-Word.Downloader.Obfuse
Create hunting rule
Status:
Malicious
First seen:
2020-04-04 17:14:11 UTC
File Type:
Document
Extracted files:
22
AV detection:
14 of 47 (29.79%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3na25lvfzpdl7hx4knufwkf7esk7cirh2adlwnhyom6b4w7767gq._file
Verdict:
unknown
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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_alina_pos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_gootkit_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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

(this sample)

NanoCore

Executable exe 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7

  
URLhaus
https://urlhaus.abuse.ch/url/334949/
  
Dropping
MD5 e0e097a9ed8b33a5e66a9ff58a4a2bdf
  
Dropping
SHA256 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7
  
Dropping
NanoCore
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 57174c910f4a37c16ce2c9d84aac1ca48724069355c2713edf4fed77eb6c19f7

Comments