MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7e5781736b54a7fa874ce94e54f6c5540aa2b223c2875570a94db1e554cf4936. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7e5781736b54a7fa874ce94e54f6c5540aa2b223c2875570a94db1e554cf4936
SHA3-384 hash: 715c6a2f9a4f2ead0bc08ce422c92f470a93bf6b9ae208145e422f1ef3316d4f8d91d83e5f684cd6a8437c299619c145
SHA1 hash: 98dd349d127f5b23da63837c7f0966be2942eb85
MD5 hash: 45f4bab2ec59f4c45d0d099fc8c9bd9f
humanhash: river-hotel-happy-glucose
File name:7e5781736b54a7fa874ce94e54f6c5540aa2b223c2875570a94db1e554cf4936
Download: download sample
Signature NanoCore
Create hunting rule
File size:5'340'160 bytes
First seen:2020-11-09 21:59:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 98304:VxRB99jnfMesv7osKK8T/PgnE8csFuKrQ3SDK2kLhT6FVwS:bd9jnAAZDPgn5cPKUiDK2QkP
TLSH 693602C093E2EE23D5DBC47910124ABDCDBA4EE9E4B2DE35E4F5B5E1C875A8D18B1102
Reporter seifreed
Tags:NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching cmd.exe command interpreter
Creating a file
Deleting a recently created file
Creating a window
Launching a process
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
DNS request
Connection attempt
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/527390
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an undocumented autostart registry key
Detected Nanocore Rat
Drops PE files with benign system names
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
Sample uses process hollowing technique
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 312786 Sample: s4Kei2CqY2 Startdate: 10/11/2020 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for dropped file 2->53 55 Antivirus / Scanner detection for submitted sample 2->55 57 8 other signatures 2->57 7 s4Kei2CqY2.exe 9 2->7         started        11 msiexec.exe 2->11         started        process3 file4 37 C:\Users\user\AppData\Local\...\svchost.exe, PE32 7->37 dropped 39 C:\Users\user\AppData\...\svchost.exe.lnk, MS 7->39 dropped 41 C:\Users\user\AppData\...\svchost.exe.bat, ASCII 7->41 dropped 43 2 other files (1 malicious) 7->43 dropped 61 Writes to foreign memory regions 7->61 63 Allocates memory in foreign processes 7->63 65 Sample uses process hollowing technique 7->65 67 3 other signatures 7->67 13 cmd.exe 3 7->13         started        17 cmd.exe 1 7->17         started        19 svchost.exe 7->19         started        21 Team-ELANLauncherSetup.exe.exe 27 7->21         started        signatures5 process6 file7 45 C:\Users\user\AppData\Local\...\svchost.exe, PE32 13->45 dropped 47 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 13->47 dropped 69 Drops PE files with benign system names 13->69 23 reg.exe 1 1 13->23         started        26 conhost.exe 13->26         started        28 conhost.exe 17->28         started        30 timeout.exe 1 17->30         started        32 WerFault.exe 23 11 19->32         started        35 msiexec.exe 5 21->35         started        signatures8 process9 dnsIp10 59 Creates an undocumented autostart registry key 23->59 49 192.168.2.1 unknown unknown 32->49 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7e5781736b54a7fa874ce94e54f6c5540aa2b223c2875570a94db1e554cf4936/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2020-11-09 22:39:03 UTC
AV detection:
30 of 48 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pzlyc43lkst7vb2m5fhfj5wfkqfkfmrdykdvk4fjjwy6kvgpje3a._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger spyware stealer trojan
Link:
https://tria.ge/reports/201109-thgd25enkx/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Enumerates connected drives
JavaScript code in executable
Loads dropped DLL
Executes dropped EXE
NanoCore
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Reconyc
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/7e5781736b54a7fa874ce94e54f6c5540aa2b223c2875570a94db1e554cf4936

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: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.

  
Delivery method
Other

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