MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4e166ce780ab93f30585864129a6e667f494d6399913855b24cf7880c5b9e32. 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

RemcosRAT

Vendor detections: 9

Intelligence 9 IOCs YARA 9 File information Comments

SHA256 hash:	a4e166ce780ab93f30585864129a6e667f494d6399913855b24cf7880c5b9e32
SHA3-384 hash:	f915d8dd647a0b9bf31ae7f649f223b83535df4dc621e785ac8f71b020dcd4743460c551d36d01d6fcf471354baebc66
SHA1 hash:	13da33254e7a65eaba20e6df13b0ad166f9b0479
MD5 hash:	fd7c7748799845d0b6ce7fc134ff2403
humanhash:	bluebird-steak-louisiana-lion
File name:	DHL_6368638172 documento de recibo,pdf.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	897'488 bytes
First seen:	2021-02-22 12:56:57 UTC
Last seen:	2021-02-22 14:59:58 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	123e9c36cc1595f744449f97bcf23cbf (6 x RemcosRAT, 1 x Loki, 1 x Formbook)
ssdeep	24576:RYUkRHVFnyXv1qhqT7ANT8QNE1C5h7bmhNS:RY9b0Uhq5hk
TLSH	A2155DB2AB0A4F22F05B113DCC4AE6FA0711BD00372B59B75E98F7478AA2791B5D1077
Reporter	abuse_ch
Tags:	DHL ESP exe geo RAT RemcosRAT

abuse_ch

Malspam distributing RemcosRAT:

HELO: smtp2.mschosting.com
Sending IP: 103.6.199.31
From: DHL Express Cargo <delivery@dhl.com>
Subject: Notificación de envío de DHL
Attachment: DHL_6368638172 documento de recibo,pdf.iso (contains "DHL_6368638172 documento de recibo,pdf.exe")

RemcosRAT C2:
insidelife1.ddns.net:2123

Intelligence

File Origin

# of uploads :

# of downloads :

119

Origin country :

n/a

Vendor Threat Intelligence

Detection:

DLAgent07

Link:

https://www.capesandbox.com/analysis/118316/

Detection(s):

PUA.Win.Adware.Slugin-6803969-0

PUA.Win.Adware.Slugin-6840354-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

DNS request

Sending a custom TCP request

Creating a file

Deleting a recently created file

Launching a process

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

Unauthorized injection to a recently created process

Connection attempt to an infection source

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Result

Threat name:

Remcos

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/614085

Signature

Allocates memory in foreign processes

C2 URLs / IPs found in malware configuration

Contains functionality to capture and log keystrokes

Contains functionality to inject code into remote processes

Contains functionality to steal Chrome passwords or cookies

Contains functionality to steal Firefox passwords or cookies

Creates a thread in another existing process (thread injection)

Detected Remcos RAT

Found malware configuration

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Remcos

Uses dynamic DNS services

Writes to foreign memory regions

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a4e166ce780ab93f30585864129a6e667f494d6399913855b24cf7880c5b9e32/

Threat name:

Win32.Trojan.Gorgon

Status:

Malicious

First seen:

2021-02-22 12:53:16 UTC

AV detection:

21 of 28 (75.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=utqwnttybk4t6mcylbsbfgtomz7ustldtgitqvnsjt3yqdc3tyza._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos persistence rat

Link:

https://tria.ge/reports/210222-4yrvq18n2j/

Behaviour

Suspicious use of WriteProcessMemory

Adds Run key to start application

Remcos

Malware Config

C2 Extraction:

insidelife1.ddns.net:2123

Unpacked files

SH256 hash:

0e7586027be2b00d10dcc585232de1b4fe8f23be8298dad1f3bc86475946b5c9

MD5 hash:

ee5230700e4a146fed27eab5f8d9caa6

SHA1 hash:

809225fca3c38e5cd30eb35b9b667393becfb516

Link:

https://www.unpac.me/results/5ec7420a-a237-433b-862f-6fe5180598d7/

SH256 hash:

a4e166ce780ab93f30585864129a6e667f494d6399913855b24cf7880c5b9e32

MD5 hash:

fd7c7748799845d0b6ce7fc134ff2403

SHA1 hash:

13da33254e7a65eaba20e6df13b0ad166f9b0479

Link:

https://www.unpac.me/results/5ec7420a-a237-433b-862f-6fe5180598d7/

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/a4e166ce780ab93f30585864129a6e667f494d6399913855b24cf7880c5b9e32

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:	ach_RemcosRAT Create hunting rule
Author:	abuse.ch

Rule name:	Chrome_stealer_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Chrome in files like avemaria

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

Rule name:	Keylog_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Contains Keylog

Rule name:	Parallax Create hunting rule
Author:	@bartblaze
Description:	Identifies Parallax RAT.

Rule name:	Remcos Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Remcos in memory

Rule name:	remcos_rat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	REMCOS_RAT_variants Create hunting rule

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