MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d0a8b39bc4bd58191a4b6db1a71621e7d9e2e124c05ad01922aafb9eba72205a. 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: d0a8b39bc4bd58191a4b6db1a71621e7d9e2e124c05ad01922aafb9eba72205a
SHA3-384 hash: 7ec3b41f8b9b35ccc134b12acfa609a0c791675676027e815973dabb56e871a9cb896356c3e5ac77eb214a35c2f31f3b
SHA1 hash: 7dd098b1d133d02e1ca22d752bc1461bf5c30a46
MD5 hash: ff3f55a6629ef141e6e3ffb2d14b137c
humanhash: item-wyoming-pasta-hotel
File name:Covid-19 Vaccine
Download: download sample
Signature NanoCore
Create hunting rule
File size:431'616 bytes
First seen:2020-03-30 12:49:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:LAeULRb58Qso8Es6NRWSfg2zJTl9BbC2DwkDeptkG3EDdTN6z6H46Wk6Hnz7zIcf:LARLgoVs6T1gI/SXKNy6H4Lz7zG4MtF
Threatray 1'351 similar samples on MalwareBazaar
TLSH 80944A13A82C85B6EF38A33E40050DC991F45C5D06C9B21A57B8BD3EC97C9625E1FE6E
Reporter abuse_ch
Tags:COVID-19 exe NanoCore RAT


Avatar
abuse_ch
COVID-19 themed malspam dropping NanoCore RAT:

HELO: sv553.xserver.jp
Sending IP: 120.136.10.54
From: CDC Health Alert <shotaro1@jkdcollective.jp>
Subject: CDC-INFO-Corona Virus Viccine found
Attachment: Covid-19 Vaccine.gz (contains "Covid-19 Vaccine")

RemcosRAT C2:
www.rmagent.xyz:10004

Domain resolves to 91.193.75.250:

% Information related to '91.193.75.0 - 91.193.75.255'

% Abuse contact for '91.193.75.0 - 91.193.75.255' is 'abuse@kgb-vpn.org'

inetnum: 91.193.75.0 - 91.193.75.255
netname: NON-LOGGING-VPN-SERVICE
descr: Please note that we don't store any user data.
descr: Our main effort is not to make money, but to preserve values like the
descr: freedom of expression, the freedom of press, the right to data protection
descr: and informational self-determination.
descr: We ask all employees of Spamhaus and all self-proclaimed deputy sheriffs
descr: to stop your attacks against us.
country: EU

Intelligence

File Origin
# of uploads :
1
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.DownLoader33.24292.10607.20852.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-03-30 11:54:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
26 of 31 (83.87%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2culhg6exvmbsgslnwy2ofrb47m6fyjeybnnagjcvl5z5otsebna._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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819b7cdae5437e09dddc2263080df829d2e8ba725f4364bfddf0cd10eb848692
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a37f501c2d65d191828fe20bf148436de23201f6fe852d59dfa67aaa5fc206e8
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d0a9cde7ebed2daf4306e0e76a341e6c4293bf9904ed464f5bfcb462dc0999d0
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e33ef485c574d639eae34cd252d97aa78c17718190c98a92f7b6dc5a5fc0cd69
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f5ccc5ce755b5273935290c41751582654c3f4783c07df8cf91dd783cd3afc1b
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f86a114e73dd0f15bc888e3db1477aa4c92d333bb236c4d3d1f49e72858bb80d
NanoCore
+ 1'341 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

gz 4823140623086754f639b278818558b914011cd912be93b99d029963c7f555a6

NanoCore

Executable exe d0a8b39bc4bd58191a4b6db1a71621e7d9e2e124c05ad01922aafb9eba72205a

(this sample)

  
X
https://twitter.com/c0d3inj3cT/status/1244593577218445317
  
Dropped by
MD5 3ee77e96c0e9133057df9e967c927322
  
Dropped by
SHA256 4823140623086754f639b278818558b914011cd912be93b99d029963c7f555a6
  
Delivery method
Distributed via e-mail attachment

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