MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4515e81702e6e47522300ea9e5d8c47bc701bac016e935ff9d95ccb2430b370. 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

Neurevt

Vendor detections: 7

Intelligence 7 IOCs YARA 1 File information Comments

SHA256 hash:	b4515e81702e6e47522300ea9e5d8c47bc701bac016e935ff9d95ccb2430b370
SHA3-384 hash:	d83a11e5dfb66ccc3e406e6d46db1f8002e1133fcc6b8df13b306c9f913e49c3abf5b4cdb836a5e8363072742b204069
SHA1 hash:	e30a8e3c73ea21c16d3ba280fde1dc045e42f52b
MD5 hash:	3091b0ea63270299c542c3a782d9abc3
humanhash:	fourteen-moon-table-hydrogen
File name:	PI NO. 5505159796 .xlsx
Download:	download sample
Signature	Neurevt Create hunting rule
File size:	801'280 bytes
First seen:	2020-08-31 08:16:34 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/encrypted
ssdeep	12288:Z2dA4kv0RWkKUQJrPf84n59cF+VQ2yF0VDfdnb8VwA+s5DC/nA1n2XkvE1/LBYVg:QdAs8PT598+dOSngEAl2U816V3eVjF
TLSH	0B052385AED40F87E7776AF96A56CAE6E20FED10933E422335D23824B13937416F24C5
Reporter	abuse_ch
Tags:	Neurevt xlsx

abuse_ch

Malspam distributing Neurevt:

HELO: slot0.izujin-jp.com
Sending IP: 92.38.132.156
From: Jerson Estacio <orderss@windrnillchina.com>
Subject: 回复：Proforma Invoic NO. 5505159796
Attachment: PI NO. 5505159796 .xlsx

Neurevt payload uRL:
http://brascase-br.com/~zadmin/div/div.exe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

PUA.Doc.Packed.EncryptedDoc-6563700-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

DNS request

Creating a file in the %AppData% directory

Creating a file in the %temp% directory

Creating a file

Creating a file in the %AppData% subdirectories

Launching cmd.exe command interpreter

Deleting a recently created file

Adding an access-denied ACE

Moving a system file

Launching a service

Unauthorized injection to a browser process

Unauthorized injection to a recently created process

Searching for analyzing tools

Searching for the window

Setting browser functions hooks

Launching a file downloaded from the Internet

Enabling autorun for a service

Firewall traversal

Setting a single autorun event

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Changing settings of the browser security zones

Sending an HTTP GET request to an infection source by exploiting the app vulnerability

Creating a process from a recently created file

Unauthorized injection to a system process

Enabling autorun

Result

Threat name:

Unknown

Detection:

malicious

Classification:

n/a

Score:

64 / 100

Link:

https://www.joesandbox.com/analysis/455007

Signature

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b4515e81702e6e47522300ea9e5d8c47bc701bac016e935ff9d95ccb2430b370/

Threat name:

Win32.Trojan.Ymacco

Status:

Malicious

First seen:

2020-08-31 01:00:18 UTC

AV detection:

15 of 29 (51.72%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wriv5alqfzxeourdadvj4xmmi66hag5mafxjgx7z3fomwjbqwnya._file

Result

Malware family:

betabot

Score:

10/10

Tags:

trojan backdoor botnet family:betabot persistence evasion

Link:

https://tria.ge/reports/200831-w5hemh7lwx/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of NtSetInformationThreadHideFromDebugger

Adds Run key to start application

Checks whether UAC is enabled

Drops desktop.ini file(s)

Checks BIOS information in registry

Loads dropped DLL

Uses the VBS compiler for execution

Blacklisted process makes network request

Executes dropped EXE

Sets file execution options in registry

BetaBot

Modifies firewall policy service

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Exploit

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/b4515e81702e6e47522300ea9e5d8c47bc701bac016e935ff9d95ccb2430b370

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.