MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99041f48a8dbb8e5e375bd93e34a74be793e875f7c7d349bfd70f0a27b18bf7d. 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

NetWire

Vendor detections: 9

Intelligence 9 IOCs YARA 5 File information Comments

SHA256 hash:	99041f48a8dbb8e5e375bd93e34a74be793e875f7c7d349bfd70f0a27b18bf7d
SHA3-384 hash:	3e45379c2b736937f53f68331a8c4a955af62b7d78247c9f51968cd9be990b642a4f729fbd03a31c64bcf7b8067c010a
SHA1 hash:	62bdf7210c905c0ac52b379675068cc45f494501
MD5 hash:	650f3b9f0c0fcf8d366affe01f095870
humanhash:	two-tennessee-delaware-low
File name:	3wAbR7aRdfHWuJQ.exe
Download:	download sample
Signature	NetWire Create hunting rule
File size:	756'224 bytes
First seen:	2020-08-04 08:36:46 UTC
Last seen:	2020-08-04 10:27:26 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:Cv4r6HcPgYxmOE+2Do4pPeRH89fPnvakcXjRPB7o4rCDV:pIYxPeVZlpSfjRRo46V
Threatray	38 similar samples on MalwareBazaar
TLSH	78F49EC1F1409E50D86A4E3B493359914B33AC6BEF02D607349CB6596BF72CA6A35F83
Reporter	abuse_ch
Tags:	exe NetWire RAT

abuse_ch

Malspam distributing NetWire:

HELO: server.jcweb.co.za
Sending IP: 164.160.89.119
From: adeba@giving.org.za
Subject: Proof of Payment
Attachment: Proof Of Payment.cab (contains "3wAbR7aRdfHWuJQ.exe")

NetWire RAT C2:
154.16.93.174:3383

Intelligence

File Origin

# of uploads :

# of downloads :

319

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/38361/

Detection(s):

SecuriteInfo.com.CIL.HeapOverride.Heur.4570.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Creating a file in the %AppData% directory

Creating a file in the %temp% directory

Launching a process

Creating a process with a hidden window

Deleting a recently created file

Unauthorized injection to a recently created process

Creating a file

Connection attempt to an infection source

Enabling autorun by creating a file

Result

Threat name:

Netwire

Detection:

malicious

Classification:

troj.evad

Score:

80 / 100

Link:

https://www.joesandbox.com/analysis/408891

Signature

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Sigma detected: Scheduled temp file as task from temp location

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

Yara detected Netwire RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

netwire

Link:

https://mwdb.cert.pl/sample/99041f48a8dbb8e5e375bd93e34a74be793e875f7c7d349bfd70f0a27b18bf7d/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-04 08:38:07 UTC

AV detection:

23 of 28 (82.14%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=tecb6sfi3o4oly3vxwj6gstuxz4t5b27pr6tjg75odyke6yyx56q._file

Verdict:

malicious

Label(s):

netwirerc

Result

Malware family:

netwire

Score:

10/10

Tags:

rat botnet stealer family:netwire

Link:

https://tria.ge/reports/200804-pwqskqmrh6/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of SetThreadContext

NetWire RAT payload

Netwire

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

Threat name:

Kryptik

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/99041f48a8dbb8e5e375bd93e34a74be793e875f7c7d349bfd70f0a27b18bf7d

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:	Malicious_BAT_Strings Create hunting rule
Author:	Florian Roth
Description:	Detects a string also used in Netwire RAT auxilliary
Reference:	https://pastebin.com/8qaiyPxs

Rule name:	MAL_unspecified_Jan18_1 Create hunting rule
Author:	Florian Roth
Description:	Detects unspecified malware sample
Reference:	Internal Research

Rule name:	netwire Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect netwire in memory
Reference:	internal research

Rule name:	Suspicious_BAT_Strings Create hunting rule
Author:	Florian Roth
Description:	Detects a string also used in Netwire RAT auxilliary
Reference:	https://pastebin.com/8qaiyPxs

Rule name:	win_netwire_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	autogenerated rule brought to you by yara-signator