MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77bb6489c1fd6c87f2ba80955211d0eef9be425d4e6076bd7280c6f87f9f3300. 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: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 77bb6489c1fd6c87f2ba80955211d0eef9be425d4e6076bd7280c6f87f9f3300
SHA3-384 hash: 0ecd2bb443dbecf9dbb4ab633f14e6820d0a6564e7f73f15e8a7965bf913353e1355a5356fdce4abb0f48f86190ff98a
SHA1 hash: 5334c89b9c340c389f5c2a9d919a84a121c650bf
MD5 hash: 02ec1301ededa1469edb45fe3804dc07
humanhash: winner-cardinal-rugby-carbon
File name:aqa4dSbdFYw5DlK.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:540'672 bytes
First seen:2020-08-16 13:57:50 UTC
Last seen:2020-08-16 15:07:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:OzC0qdngDixcQWw8onqZ5Q+uRTnQdQ7tzoCPEtCO6B:OBe/DWXCrFoAEtoB
Threatray 1'075 similar samples on MalwareBazaar
TLSH 0FB41267F4D0C71AC4BD2FB995E06B4017B274CAE721F63EBF80188A69A56C58350FD2
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: cloud-1bdf0b.managed-vps.net
Sending IP: 78.128.43.156
From: Rany Seif <info@brtglobalscrap.com>
Subject: RFQ ORDER 00226
Attachment: RFQ ORDER 00226.IMG (contains "aqa4dSbdFYw5DlK.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/46471/
Detection(s):
SecuriteInfo.com.Generic.mg.02ec1301ededa146.32683.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Result
Threat name:
Nanocore AveMaria MailPassView
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/432265
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
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)
Sample uses process hollowing technique
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected AveMaria stealer
Yara detected MailPassView
Yara detected Nanocore RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 267916 Sample: aqa4dSbdFYw5DlK.exe Startdate: 16/08/2020 Architecture: WINDOWS Score: 100 52 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Sigma detected: Scheduled temp file as task from temp location 2->56 58 12 other signatures 2->58 7 aqa4dSbdFYw5DlK.exe 7 2->7         started        11 dhcpmon.exe 5 2->11         started        process3 file4 34 C:\Users\user\AppData\...\UdZIvSkyXmBB.exe, PE32 7->34 dropped 36 C:\Users\...\UdZIvSkyXmBB.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\...\tmp171E.tmp, XML 7->38 dropped 40 C:\Users\user\...\aqa4dSbdFYw5DlK.exe.log, ASCII 7->40 dropped 60 Injects a PE file into a foreign processes 7->60 13 aqa4dSbdFYw5DlK.exe 1 14 7->13         started        18 schtasks.exe 1 7->18         started        20 schtasks.exe 1 11->20         started        22 dhcpmon.exe 2 11->22         started        signatures5 process6 dnsIp7 50 194.5.97.7, 21600, 49728, 49741 DANILENKODE Netherlands 13->50 42 C:\Program Files (x86)\...\dhcpmon.exe, PE32 13->42 dropped 44 C:\Users\user\AppData\Roaming\...\run.dat, data 13->44 dropped 46 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 13->46 dropped 68 Writes to foreign memory regions 13->68 70 Allocates memory in foreign processes 13->70 72 Sample uses process hollowing technique 13->72 74 2 other signatures 13->74 24 vbc.exe 1 13->24         started        27 vbc.exe 13 13->27         started        30 conhost.exe 18->30         started        32 conhost.exe 20->32         started        file8 signatures9 process10 dnsIp11 62 Tries to steal Mail credentials (via file registry) 24->62 64 Tries to steal Instant Messenger accounts or passwords 24->64 66 Tries to steal Mail credentials (via file access) 24->66 48 192.168.2.1 unknown unknown 27->48 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/77bb6489c1fd6c87f2ba80955211d0eef9be425d4e6076bd7280c6f87f9f3300/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2020-08-16 11:16:44 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o65wjcob7vwip4v2qckveeoq53434qs5jzqhnplsqddpq747gmaa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 1'065 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
persistence evasion trojan keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/200816-1qkvelm85x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
194.5.97.7:21600
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/77bb6489c1fd6c87f2ba80955211d0eef9be425d4e6076bd7280c6f87f9f3300

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

img cd590376deccc27f22c7d9a573bcc470a5b7e6242725df7be5cfaafc454f6bdc

NanoCore

Executable exe 77bb6489c1fd6c87f2ba80955211d0eef9be425d4e6076bd7280c6f87f9f3300

(this sample)

  
Dropped by
MD5 0dbdab632dbb8f63948ca904f59a695e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46471/
  
Dropped by
SHA256 cd590376deccc27f22c7d9a573bcc470a5b7e6242725df7be5cfaafc454f6bdc

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