MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d83d25cdeec57d8bdb0ae70c21d60f32645a2fa21f3f7792774b5ad3bffce9b5. 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: d83d25cdeec57d8bdb0ae70c21d60f32645a2fa21f3f7792774b5ad3bffce9b5
SHA3-384 hash: 78fcc79228c6fbf269c8011267d67774ebbb81d9c5d5edebc5fb9491bba35bfc43634dc8ba3e3e9ec722e68eb516e1c1
SHA1 hash: dd8e298a38ce2a00a37c2e1d59e1be8396bd7941
MD5 hash: da9112d50e0f40e54d8bba677416c0e3
humanhash: spaghetti-virginia-lamp-oxygen
File name:Document.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:332'800 bytes
First seen:2020-04-29 16:34:46 UTC
Last seen:2020-04-29 18:12:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:M6q4zY5YYTmO2x8hWKuUN/N3mciAy3GPOIXyKBAWiTYdZLky8wHr/+CJzeJfZc:5O2x8D/NVTO+lb6YvLT6IiJ6
Threatray 1'657 similar samples on MalwareBazaar
TLSH C16412BC53ED637FC199037994C38E07F3A1825AE057F7A62E965E5E158FBC22910283
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: dharmajaya.co.id
Sending IP: 103.113.170.147
From: Singapore Post <delivery.notice@singpost.com>
Subject: Your Singapore Post package arrived at our office
Attachment: Document.iso (contains "Document.exe")

NanoCore RAT C2:
172.111.188.199:8829

Intelligence

File Origin
# of uploads :
2
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.MSIL.GenKryptik.EJLK.31415.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-04-29 13:43:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
25 of 31 (80.65%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3a6sltpoyv6yxwyk44gcdvqpgjsful5cd47xpetxjnnnhp745g2q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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782999121ca089a150f34c3527a7e1c1a5f9c59a73034e3bf6ca166c590a47f3
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d1a314902f558ae79e891b785eec7e87002ed607411e8dfc85b5fbb2f9ef9dc0
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NanoCore
+ 1'647 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

iso 40d102fc7728819872c946f135cde399e0174d2f2e017e569d346ce7eedf544a

NanoCore

Executable exe d83d25cdeec57d8bdb0ae70c21d60f32645a2fa21f3f7792774b5ad3bffce9b5

(this sample)

  
Dropped by
MD5 cd5960cb5a4761d620944af415685d4d
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 40d102fc7728819872c946f135cde399e0174d2f2e017e569d346ce7eedf544a

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