MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5f5021b3286e9d1b8e9fa9d53319773f0be1c7603efddd040124be7c60424edc. 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: | 5f5021b3286e9d1b8e9fa9d53319773f0be1c7603efddd040124be7c60424edc |
|---|---|
| SHA3-384 hash: | 77974437f6dd0ba057ec645b0bdd0511884f2d4434dd8ee41e3abb3c9e4b37a9716782a39c261e323efa5a3fa929debf |
| SHA1 hash: | 75bcf79c8ee3efab0d6e5c7a0a525ebf2b228ea1 |
| MD5 hash: | f0b83c230279578b9f80232fceea1cb1 |
| humanhash: | high-avocado-grey-grey |
| File name: | VCKBY846628.vbs |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 527 bytes |
| First seen: | 2021-05-16 18:20:27 UTC |
| Last seen: | Never |
| File type: |  vbs |
| MIME type: | text/plain |
| ssdeep | 12:q51/ew1/nhVMECsswsi4Gv2fBAXZcYF4zP0dMECspsiWvSPvAXZZ1/2tP1:CLnDMEv1siDOJIZ9QP0dMEvpsiWKHIZc |
| Threatray | 2'102 similar samples on MalwareBazaar |
| TLSH | 6AF05947DE6CCA437B5644C7ACB0053C69C9F9CEA858E02807404BED00020EB670C993 |
| 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 |
|---|---|
| 137.74.176.167:5553 | https://threatfox.abuse.ch/ioc/43594/ |
| 137.74.176.167:22 | https://threatfox.abuse.ch/ioc/43595/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a file
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Reading critical registry keys
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Result
Threat name:
AsyncRAT Quasar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: MSHTA Spawning Windows Shell
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Powershell download and execute
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Threat name:
Script.Trojan.Heuristic
Status:
Malicious
First seen:
2021-05-16 18:21:06 UTC
AV detection:
5 of 47 (10.64%)
Threat level:
2/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
asyncrat
nanocorerat
Similar samples:
+ 2'092 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:asyncrat family:quasar rat spyware trojan
Behaviour
Modifies Internet Explorer settings
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Blocklisted process makes network request
Async RAT payload
AsyncRat
Quasar Payload
Quasar RAT
Malware Config
Dropper Extraction:
https://elmerfloyd.com/ALL.txt
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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