MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615. 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

njrat

Vendor detections: 7

Intelligence 7 IOCs YARA 1 File information Comments

SHA256 hash:	dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615
SHA3-384 hash:	944767c73f2e47a467cef87d2176ff5be9aa52bf22065f9d31fe095da838cc25f34700372c84fbd3af717f017575ed32
SHA1 hash:	098e6c6008a22f8cd3ba23b13432e877b7e8f24c
MD5 hash:	61d98360d8543a31b296a56bd2c451b6
humanhash:	thirteen-beryllium-cold-lake
File name:	WOT565-16BOB-PDF.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	240'128 bytes
First seen:	2020-08-05 12:04:11 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	6144:5Sxe/50BB+TWzVYj9q5j5DTYEx/ClBCcWY72:5Sg/u+a2jIpYExMfi
Threatray	44 similar samples on MalwareBazaar
TLSH	7C34BF1C36A0A51EF6BA1E3F4C3101839E22F85FDE22D64B6A7111BD457E69CBC60F61
Reporter	abuse_ch
Tags:	ESP exe geo NjRAT RAT Santander

abuse_ch

Malspam distributing njrat:

HELO: mail119.areaproject.net
Sending IP: 185.55.249.119
From: Factoring y Confirming - Grupo Santander <fycout@gruposantander.com>
Subject: Confirming - Aviso de pago
Attachment: WOT565-16BOB-PDF.GZ (contains "WOT565-16BOB-PDF.exe")

NjRAT C2:
yenhack.ddns.net:16051 (216.38.2.193)

Intelligence

File Origin

# of uploads :

# of downloads :

248

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/39530/

Detection(s):

SecuriteInfo.com.CIL.HeapOverride.Heur.4924.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Unauthorized injection to a recently created process

Creating a file

Creating a process with a hidden window

DNS request

Using the Windows Management Instrumentation requests

Sending a custom TCP request

Launching the process to change the firewall settings

Result

Threat name:

njRat

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/411127

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Contains functionality to log keystrokes (.Net Source)

Detected njRat

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Modifies the windows firewall

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 dynamic DNS services

Uses netsh to modify the Windows network and firewall settings

Yara detected AntiVM_3

Yara detected Njrat

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-05 11:28:14 UTC

AV detection:

26 of 29 (89.66%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=3r7wrhggvw7v3drwacbzb3jkphkz2djuch46gu65vtzdnzuvuykq._file

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/200805-h7lk6wq266/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Program crash

Suspicious use of SetThreadContext

Modifies service

Modifies Windows Firewall

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

Threat name:

Suspicious File

Score:

0.55

Link:

https://yomi.yoroi.company/submissions/dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615

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.