MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ffdfd5cf9dc5f01ef37c75d1ca13d8e59afe458c0a9f7db7b6e8954d8eb6fdb. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ffdfd5cf9dc5f01ef37c75d1ca13d8e59afe458c0a9f7db7b6e8954d8eb6fdb
SHA3-384 hash: 0468646099285ff09fe71c256c5e003340c1345bc487364f04642b6d14f53efda5a96b714017423fc2aae7e72d74883a
SHA1 hash: 8a74dd67aeb5e98b7c6f6257919f383417260f7a
MD5 hash: 82e4ad945c60d86d322a34ce931141a0
humanhash: item-four-avocado-freddie
File name:BL Draft #20200728-74399392RTY48HRH.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:750'080 bytes
First seen:2020-07-29 06:46:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash e8ef47e85c79ee608837cc415c05c43b (15 x AgentTesla, 5 x NanoCore, 5 x Loki)
ssdeep 12288:bRXtpnVH9Az44BnvOCDhzcl0UdKndi2bnXzdwBbrHEjCs1ALaKVkx8:bfd8z4byilBdlGXhwB/kjCQALaKu8
Threatray 3'050 similar samples on MalwareBazaar
TLSH 03F49E62A2E14833D1672E3B9C1B57649B3ABF1C2A3859452FFC1CCC5F3978134662A7
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: webmail.cyber.net.pk
Sending IP: 203.101.175.37
From: Rong Lee <hameedentr@cyber.net.pk>
Subject: Re: **TOP URGENT** Shipping Documents
Attachment: BL Draft 20200728-74399392RTY48HRH.pdf.gz (contains "BL Draft #20200728-74399392RTY48HRH.exe")

NanoCore RAT C2:
79.134.225.74:1980

Hosted on nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
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.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
73
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/34254/
Detection(s):
PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

SecuriteInfo.com.Trojan.PWS.Stealer.19347.10936.15784.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
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 with Startup directory
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/401365
Signature
.NET source code contains potential unpacker
Contains functionality to detect sleep reduction / modifications
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 252916 Sample: BL Draft #20200728-74399392... Startdate: 29/07/2020 Architecture: WINDOWS Score: 100 90 Found malware configuration 2->90 92 Malicious sample detected (through community Yara rule) 2->92 94 Multi AV Scanner detection for dropped file 2->94 96 13 other signatures 2->96 10 BL Draft #20200728-74399392RTY48HRH.exe 2->10         started        13 BL Draft #20200728-74399392RTY48HRH.exe 2->13         started        15 dhcpmon.exe 2->15         started        17 dhcpmon.exe 2->17         started        process3 signatures4 100 Maps a DLL or memory area into another process 10->100 19 BL Draft #20200728-74399392RTY48HRH.exe 1 14 10->19         started        24 BL Draft #20200728-74399392RTY48HRH.exe 10->24         started        26 BL Draft #20200728-74399392RTY48HRH.exe 13->26         started        28 BL Draft #20200728-74399392RTY48HRH.exe 3 13->28         started        30 dhcpmon.exe 15->30         started        32 dhcpmon.exe 3 15->32         started        34 dhcpmon.exe 17->34         started        36 dhcpmon.exe 17->36         started        process5 dnsIp6 86 79.134.225.74, 1980, 49735, 49737 FINK-TELECOM-SERVICESCH Switzerland 19->86 76 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->76 dropped 78 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 19->78 dropped 80 C:\Users\user\AppData\Local\...\tmpEC33.tmp, XML 19->80 dropped 82 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 19->82 dropped 98 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->98 38 schtasks.exe 1 19->38         started        40 schtasks.exe 1 19->40         started        42 BL Draft #20200728-74399392RTY48HRH.exe 26->42         started        84 BL Draft #20200728...392RTY48HRH.exe.log, ASCII 28->84 dropped 45 dhcpmon.exe 30->45         started        47 dhcpmon.exe 34->47         started        file7 signatures8 process9 signatures10 49 conhost.exe 38->49         started        51 conhost.exe 40->51         started        102 Maps a DLL or memory area into another process 42->102 53 BL Draft #20200728-74399392RTY48HRH.exe 42->53         started        55 BL Draft #20200728-74399392RTY48HRH.exe 42->55         started        57 dhcpmon.exe 45->57         started        59 dhcpmon.exe 45->59         started        61 dhcpmon.exe 47->61         started        63 dhcpmon.exe 47->63         started        process11 process12 65 BL Draft #20200728-74399392RTY48HRH.exe 53->65         started        68 dhcpmon.exe 57->68         started        signatures13 88 Maps a DLL or memory area into another process 65->88 70 BL Draft #20200728-74399392RTY48HRH.exe 65->70         started        72 BL Draft #20200728-74399392RTY48HRH.exe 65->72         started        74 dhcpmon.exe 68->74         started        process14
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4ffdfd5cf9dc5f01ef37c75d1ca13d8e59afe458c0a9f7db7b6e8954d8eb6fdb/
Threat name:
Win32.Trojan.DataStealer
Create hunting rule
Status:
Malicious
First seen:
2020-07-29 06:48:07 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=j7672xhz3rpqd3zxy5orzij5rzm27zcyycu7pw33n2evjwhln7nq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
hawkeyekeylogger
Create hunting rule
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NanoCore
+ 3'040 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
upx evasion trojan keylogger stealer spyware family:nanocore persistence
Link:
https://tria.ge/reports/200729-vw7wz81ycx/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Adds Run key to start application
UPX packed file
NanoCore
Malware Config
C2 Extraction:
:1980
79.134.225.74:1980
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4ffdfd5cf9dc5f01ef37c75d1ca13d8e59afe458c0a9f7db7b6e8954d8eb6fdb

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 7c86a1ffb6ac3352a354bbe05c13c9f41f4341ddb596c1b6f3a7500b67b51ab8

NanoCore

Executable exe 4ffdfd5cf9dc5f01ef37c75d1ca13d8e59afe458c0a9f7db7b6e8954d8eb6fdb

(this sample)

  
Dropped by
MD5 3f22826f3f2b8880daca85262c37e031
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/34254/
  
Dropped by
SHA256 7c86a1ffb6ac3352a354bbe05c13c9f41f4341ddb596c1b6f3a7500b67b51ab8

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