MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ecb435211089891e65a4632e22668914f662ca6a56747c7cd25dd0339f2ff20f. 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: 8


Intelligence 8 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ecb435211089891e65a4632e22668914f662ca6a56747c7cd25dd0339f2ff20f
SHA3-384 hash: dbeaca42e9b0cca47be80ced233a04f6caf51c1e14b47e7b100b5ba3a0e7c693955ff9015e92e71b7e4bfa5be0f95ad4
SHA1 hash: 1f6d4e92b27c0b76c5791ad6ecc082b6793b0638
MD5 hash: a3cd2a6aca7ffb863df69baa33539b23
humanhash: fanta-golf-black-carolina
File name:a3cd2a6aca7ffb863df69baa33539b23.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'152'512 bytes
First seen:2020-11-11 16:30:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:5uLKgK++Ue9ZJqm8jVtCiCObS+kut3dMxhwBV2AkZbLq0z13egiEldiL5cYnNGeu:U4v0XjoRpdaPSWK4ylCb
TLSH 66352C58A8D8638BC83B37B99B3915B1C370CE6602B9C6D740DC78F66E6DC768B71904
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore RAT C2:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Launching a process
Deleting a recently created file
DNS request
Connection attempt
Creating a window
Sending a UDP request
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/531338
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Found malware configuration
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)
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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: 314769 Sample: HDyADDoI3I.exe Startdate: 12/11/2020 Architecture: WINDOWS Score: 100 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Multi AV Scanner detection for dropped file 2->67 69 10 other signatures 2->69 8 HDyADDoI3I.exe 1 6 2->8         started        12 vlc.exe 3 2->12         started        14 HDyADDoI3I.exe 4 2->14         started        16 3 other processes 2->16 process3 file4 55 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 8->55 dropped 57 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 8->57 dropped 59 C:\Users\user\AppData\...\HDyADDoI3I.exe.log, ASCII 8->59 dropped 73 Injects a PE file into a foreign processes 8->73 18 HDyADDoI3I.exe 1 12 8->18         started        23 HDyADDoI3I.exe 8->23         started        25 HDyADDoI3I.exe 8->25         started        27 vlc.exe 12->27         started        29 vlc.exe 12->29         started        31 HDyADDoI3I.exe 14->31         started        33 HDyADDoI3I.exe 14->33         started        35 dhcpmon.exe 16->35         started        37 dhcpmon.exe 16->37         started        signatures5 process6 dnsIp7 61 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 192.253.246.143, 2017 LEASEWEB-USA-NYC-11US United States 18->61 47 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->47 dropped 49 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->49 dropped 51 C:\Users\user\AppData\Local\...\tmpAA3D.tmp, XML 18->51 dropped 53 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->53 dropped 71 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->71 39 schtasks.exe 1 18->39         started        41 schtasks.exe 1 18->41         started        file8 signatures9 process10 process11 43 conhost.exe 39->43         started        45 conhost.exe 41->45         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ecb435211089891e65a4632e22668914f662ca6a56747c7cd25dd0339f2ff20f/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-11-11 00:28:24 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5s2dkiiqrger4znemmxcezujct3gfstkkz2hy7gslxidhhzp6ihq._file
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/201111-rnl9p69ega/
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:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
ecb435211089891e65a4632e22668914f662ca6a56747c7cd25dd0339f2ff20f
MD5 hash:
a3cd2a6aca7ffb863df69baa33539b23
SHA1 hash:
1f6d4e92b27c0b76c5791ad6ecc082b6793b0638
Link:
https://www.unpac.me/results/9e62ad66-2a4b-4c4e-9184-5ccd821bf708/
SH256 hash:
266ef3188015e6d84f48c697f2866982c75b0a93f83dc7ab8483984e25f3ef56
MD5 hash:
075c72d8d50633adf35530176aed9b12
SHA1 hash:
16630329bc798e31bf239f015718ce0ef1c41081
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/9e62ad66-2a4b-4c4e-9184-5ccd821bf708/
Parent samples :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 hash:
f7d0ab428d590ca7b76e6b43601e8251586b287aca303e36113f6e99de382c15
MD5 hash:
72ca454a298e499cd5cd93c6c70b727f
SHA1 hash:
3046a182f19b37be217c0bfa66c7e9ac7c9ccd01
Link:
https://www.unpac.me/results/9e62ad66-2a4b-4c4e-9184-5ccd821bf708/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/9e62ad66-2a4b-4c4e-9184-5ccd821bf708/
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
Create hunting rule
Author:jeFF0Falltrades
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.

Web download

NanoCore

Executable exe ecb435211089891e65a4632e22668914f662ca6a56747c7cd25dd0339f2ff20f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/779105/
  
Delivery method
Distributed via web download

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