MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e0fe982389456170eea35ca081a62fc9ee770a27af6058c48059b0c80b4a620a. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e0fe982389456170eea35ca081a62fc9ee770a27af6058c48059b0c80b4a620a
SHA3-384 hash: 347f84b869e08f1cd818ba0a4358cac32620d8ea430cf93ef8ef1bb8faee790d7fd94b9264a0d9895c48ac0027c95012
SHA1 hash: b8c95d73e2f7febc8ea2b8f7098bdae8457f6c26
MD5 hash: 192a1bc5099485f62c76af77ec55f900
humanhash: leopard-kentucky-uniform-mexico
File name:Invoice for B1019855_PDF.vbs
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'690'097 bytes
First seen:2021-05-25 06:16:00 UTC
Last seen:2021-05-25 07:09:00 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:+3yfW/7GFbq9vhsmR2Ih/bnTKlIeEa755mDUTc:+qHu2I1Gb7bnc
Threatray 7'147 similar samples on MalwareBazaar
TLSH E475D03B82D3BCD63A772E4036C42A7D2CB8767FC7914205B6801DE520B19B8EF566E5
Reporter abuse_ch
Tags:NanoCore RAT vbs

Intelligence

File Origin
# of uploads :
2
# of downloads :
176
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/161619/
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.PUA.Base64EXE-2.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Verdict:
MALICIOUS
Result
Threat name:
Nanocore AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792098
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: NanoCore
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)
Uses schtasks.exe or at.exe to add and modify task schedules
VBScript performs obfuscated calls to suspicious functions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 424494 Sample: Invoice for B1019855_PDF.vbs Startdate: 25/05/2021 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 13 other signatures 2->61 8 wscript.exe 3 2->8         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\name.exe, PE32 8->35 dropped 37 C:\Users\user\AppData\Local\Temp\ame.exe, PE32 8->37 dropped 65 Benign windows process drops PE files 8->65 67 VBScript performs obfuscated calls to suspicious functions 8->67 12 name.exe 8 8->12         started        16 ame.exe 8 8->16         started        signatures5 process6 file7 39 C:\Users\user\AppData\...\HoIoSwScBaF.exe, PE32 12->39 dropped 41 C:\Users\user\AppData\Local\...\tmp6AEF.tmp, XML 12->41 dropped 69 Multi AV Scanner detection for dropped file 12->69 71 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 12->71 73 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->73 79 3 other signatures 12->79 18 name.exe 4 12->18         started        21 schtasks.exe 1 12->21         started        43 C:\Users\user\AppData\Roaming\KKKDzkfvt.exe, PE32 16->43 dropped 75 Machine Learning detection for dropped file 16->75 77 Injects a PE file into a foreign processes 16->77 23 ame.exe 10 16->23         started        27 schtasks.exe 1 16->27         started        signatures8 process9 dnsIp10 45 jetport-aero.com 217.182.175.206, 49722, 49725, 49728 OVHFR France 18->45 47 mail.jetport-aero.com 18->47 29 conhost.exe 21->29         started        49 sys2021.linkpc.net 51.178.229.162, 11940, 49709, 49712 OVHFR France 23->49 51 191.96.25.26, 11940, 49724, 49726 AS40676US Chile 23->51 53 192.168.2.1 unknown unknown 23->53 33 C:\Users\user\AppData\Roaming\...\run.dat, data 23->33 dropped 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->63 31 conhost.exe 27->31         started        file11 signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e0fe982389456170eea35ca081a62fc9ee770a27af6058c48059b0c80b4a620a/
Threat name:
Script-WScript.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-05-25 06:16:09 UTC
AV detection:
12 of 46 (26.09%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4d7jqi4jivqxb3vdlsqidjrpzhxhocrhv5qfrrealgymqc2kmifa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
agenttesla
Create hunting rule
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NanoCore
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NanoCore
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cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d
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e11f59ce9dae9fcff7ff4c8d3d119dd663a1918d084f8cda7b30c474cd141642
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e29e9d9beb5ce8187decf038cdc0b1d3102b4cfe43715a3b4f934098a943ebed
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e9c3fc00ddb08ef196d05b56ce0c83c04381de42e8777e902e3e9c7afe4a9f11
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f29b0b35d584de9410f3ffe75e8e4dbc6d90ecbc6f2c4d9382d8faf33e88d80b
NanoCore
+ 7'137 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:nanocore evasion keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210525-b3gb87184e/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: SetClipboardViewer
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Maps connected drives based on registry
Checks BIOS information in registry
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
Looks for VMWare Tools registry key
AgentTesla Payload
Looks for VirtualBox Guest Additions in registry
AgentTesla
NanoCore
Malware Config
C2 Extraction:
sys2021.linkpc.net:11940
191.96.25.26:11940
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/e0fe982389456170eea35ca081a62fc9ee770a27af6058c48059b0c80b4a620a

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_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:ach_NanoCore
Create hunting rule
Author:abuse.ch
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla
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.

Cape
Cape
https://www.capesandbox.com/analysis/161619/

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