MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 876b731a87a9261f5f533bab8b57c6cdc23664268fe8232cb6c65adb37b99c79. 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
| SHA256 hash: | 876b731a87a9261f5f533bab8b57c6cdc23664268fe8232cb6c65adb37b99c79 |
|---|---|
| SHA3-384 hash: | 015dcfc8805edeeabd6525897f17eccc5b28837149e3bec28197ca54ee3ebedad8ec44ae6fd7ccb18c325d5136ad0450 |
| SHA1 hash: | 90f47fbc81b0b78090493830c10853272c1a4269 |
| MD5 hash: | 78c38efc5c41f4047ee410d3b33ad073 |
| humanhash: | montana-football-thirteen-nevada |
| File name: | Specification1PDF.vbs |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 2'064'867 bytes |
| First seen: | 2021-06-18 20:46:06 UTC |
| Last seen: | Never |
| File type: |  vbs |
| MIME type: | text/plain |
| ssdeep | 24576:ob14l86ARrnCJZv+nc/yY6UmALwmZz0Inl2s167UF9/nSGnEaRr8IxTaZinTte9g:Z0Um0wPIl2v7AVt6QEDgK0 |
| Threatray | 7'994 similar samples on MalwareBazaar |
| TLSH | 35A5CF37D1D3BC977B672E4073D42A3C2CA97AEB8B611919B5400DE82672A70EF549F0 |
| Reporter |  abuse_ch |
| Tags: | NanoCore RAT vbs |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 191.96.25.26:11940 | https://threatfox.abuse.ch/ioc/9454/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Result
Verdict:
MALICIOUS
Result
Threat name:
Nanocore AgentTesla
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
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
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
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:
Threat name:
Script-WScript.Trojan.Heuristic
Status:
Malicious
First seen:
2021-06-18 20:46:12 UTC
AV detection:
11 of 45 (24.44%)
Threat level:
2/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
agenttesla
Similar samples:
+ 7'984 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:agenttesla family:nanocore evasion keylogger spyware stealer trojan
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: SetClipboardViewer
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
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
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
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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