MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 62a7f441ba21aaa568fe700029fa32d6dd7eeb2ed0a7f7259a680f2aae65ee31. 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: 62a7f441ba21aaa568fe700029fa32d6dd7eeb2ed0a7f7259a680f2aae65ee31
SHA3-384 hash: 447f2b97af6a36ea178cd83b02507fd588538b796569526271587e27c59f18affc8357e0a53ffe09dc0161e74d317288
SHA1 hash: 1ab0afb0cafb35b2218aefa34de78abec2eea298
MD5 hash: dfd8bd78c724d661a354312437e303de
humanhash: two-speaker-seventeen-seventeen
File name:POEA-MANNING ADVISORY 2020-56.PDF.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'103'230 bytes
First seen:2020-08-17 06:43:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:BAOcZeJi1LG7IEWK30vgtTbCbYz0Gxg539FQZMaBQiRtn:bStuwK3CCxw96ZMARt
Threatray 1'262 similar samples on MalwareBazaar
TLSH F3351202B7D68471D0721D32492A7B51ADBCBE304E24DE2EB7E009ADE9751D0A635FE3
Reporter abuse_ch
Tags:exe NanoCore nVpn RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: server.leentechdataserver.com
Sending IP: 67.215.5.147
From: POEA MANILA <info1@poea.gov.ph>
Subject: MARINA ADVISORY 2020-56! REMINDER
Attachment: POEA-MANNING ADVISORY 2020-56.PDF.LZH (contains "POEA-MANNING ADVISORY 2020-56.PDF.exe")

NanoCore RAT C2:
alhabib4rec.freeddns.org:54985 (185.140.53.135)

Pointing to nVpn:

% Information related to '185.140.53.0 - 185.140.53.255'

% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'

inetnum: 185.140.53.0 - 185.140.53.255
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.
netname: PRIVACYFIRST-EU3
country: EU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-07-28T20:56:03Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/46700/
Detection(s):
Win.Dropper.NetWire-9102409-0
Create hunting rule

SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file
Enabling the 'hidden' option for recently created files
Sending a UDP request
Creating a process from a recently created file
Creating a file in the %temp% directory
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Launching a process
Deleting a recently created file
DNS request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending a TCP request to an infection source
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/432656
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Nanocore Rat
Drops PE files with a suspicious file extension
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 268623 Sample: POEA-MANNING ADVISORY 2020-... Startdate: 17/08/2020 Architecture: WINDOWS Score: 100 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Sigma detected: Scheduled temp file as task from temp location 2->52 54 10 other signatures 2->54 9 POEA-MANNING ADVISORY 2020-56.PDF.exe 66 2->9         started        12 sfoioh.pif 2->12         started        15 RegSvcs.exe 2 2->15         started        17 sfoioh.pif 2->17         started        process3 file4 38 C:\Users\user\29636000\sfoioh.pif, PE32 9->38 dropped 19 sfoioh.pif 1 3 9->19         started        64 Writes to foreign memory regions 12->64 66 Allocates memory in foreign processes 12->66 68 Injects a PE file into a foreign processes 12->68 23 RegSvcs.exe 2 12->23         started        40 C:\Users\user\AppData\...\RegSvcs.exe.log, ASCII 15->40 dropped 25 conhost.exe 15->25         started        signatures5 process6 file7 36 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 19->36 dropped 56 Machine Learning detection for dropped file 19->56 58 Writes to foreign memory regions 19->58 60 Allocates memory in foreign processes 19->60 62 Injects a PE file into a foreign processes 19->62 27 RegSvcs.exe 11 19->27         started        signatures8 process9 dnsIp10 46 alhabib4rec.freeddns.org 185.140.53.135, 49709, 54985 DAVID_CRAIGGG Sweden 27->46 42 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 27->42 dropped 44 C:\Users\user\AppData\Local\...\tmp4A6C.tmp, XML 27->44 dropped 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->70 32 schtasks.exe 1 27->32         started        file11 signatures12 process13 process14 34 conhost.exe 32->34         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/62a7f441ba21aaa568fe700029fa32d6dd7eeb2ed0a7f7259a680f2aae65ee31/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 02:24:05 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mkt7iqn2egvkk2h6oaact6rs23ox52zo2ct7ojm2nahsvltf5yyq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
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NanoCore
4d13350ebf3d38475a0a4a8c223fe6c06e00af3585eb499f60e29639b3944d3f
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b40b7bfd1fa04e5b9cc6dfc143c49fce45a9d1c1c7cb4e0726030e97d321937a
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c0722d0e58ef57301d0883dcddf27c8eed901c9a01b186e6b400c48f7ff6a832
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cbf010e4d58f12ac1a0ce0ef5e29636c13a3a6ee5b052aae7cad7e9a95448276
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d6c73d397215d259bfb6168e9c0a6c29bb8e684509877e0ec62aba0c817a25fa
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e777a395f2d28d4b57113b46bb4af52ec1e6d1d48342d0fb24a142df1fffbdc7
NanoCore
+ 1'252 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
persistence keylogger trojan stealer spyware family:nanocore evasion
Link:
https://tria.ge/reports/200817-wtcdwrdxra/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
alhabib4rec.freeddns.org:54985
alhabib4rec.ddns.net:54985
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/62a7f441ba21aaa568fe700029fa32d6dd7eeb2ed0a7f7259a680f2aae65ee31

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

rar 63b45db1a34b47cfe915e7ae7fdd80d25b216259eb8a49f950d54d6b985155ec

NanoCore

Executable exe 62a7f441ba21aaa568fe700029fa32d6dd7eeb2ed0a7f7259a680f2aae65ee31

(this sample)

  
Dropped by
MD5 3257e43b37a5fa87a5d8e7bf3faf1e62
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46700/
  
Dropped by
SHA256 63b45db1a34b47cfe915e7ae7fdd80d25b216259eb8a49f950d54d6b985155ec

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