MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 181c15869192fd251b5b1739ac117d7de7785c91e6a32b50c8c18ddf56746321. 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: 7

Intelligence 7 IOCs YARA 1 File information Comments

SHA256 hash:	181c15869192fd251b5b1739ac117d7de7785c91e6a32b50c8c18ddf56746321
SHA3-384 hash:	86293eff7241ccf73c88496362b242207c2e1a36b67075d3d022fe3c009148f2e211b9b79cf51c181d38fe86125c10c1
SHA1 hash:	9bd038a14121571e0e014d9ac5aa8cd5d3361843
MD5 hash:	8448f2de9d5b0985249233bc3c7a18f0
humanhash:	four-stairway-juliet-eight
File name:	Attachment.iso
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'638'400 bytes
First seen:	2021-11-21 16:40:33 UTC
Last seen:	Never
File type:	iso
MIME type:	application/x-iso9660-image
ssdeep	12288:bfN+uElN7JkOAn0vf9XuvvTsEIMw048gkc6fMFvjzZrpvze5EJAMJVRFSl5liL6S:bFoN7KnUvzeyvVRFSl5liLze/wA6
TLSH	T11E759E12F161947EE7A687349C1EA1354669FF4828F2D40938FC7C9AC7793412A3EB93
Reporter	cocaman
Tags:	iso RemcosRAT

cocaman

Malicious email (T1566.001)
From: ""USPS Customer Support" <usps@deliveryrefund.com>" (likely spoofed)
Received: "from mail.deliveryrefund.com (vmi717535.contaboserver.net [185.209.228.52]) "
Date: "Mon, 15 Nov 2021 22:15:06 +0800"
Subject: "Delivery Failed"
Attachment: "Attachment.iso"

Intelligence

File Origin

# of uploads :

# of downloads :

130

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Foxhole.Iso_fs1729.UNOFFICIAL

SecuriteInfo.com.ArtemisAB54071F11CA.6088.2461.UNOFFICIAL

Verdict:

Suspicious

Threat level:

5/10

Confidence:

67%

Tags:

packed remcos

Link:

https://www.filescan.io/uploads/619a76a0dd04e7d00e01089c/reports/ed161879-c47a-407a-aa42-c65e67e72eac/overview

Result

Verdict:

MALICIOUS

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/181c15869192fd251b5b1739ac117d7de7785c91e6a32b50c8c18ddf56746321/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2021-11-15 09:44:39 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

15 of 44 (34.09%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=daoblbursl6skg23c442yel5pxtxqxer42rswugiygg56vtummqq._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost persistence rat

Link:

https://tria.ge/reports/211121-t64csahbb5/

Behaviour

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Adds Run key to start application

Remcos

Malware Config

C2 Extraction:

rem1.camdvr.org:2404
rem16.hopto.org:2404
rem1666.hopto.org:2404
rem16.camdvr.org:2404
remmusic.freeddns.org:2404
sunwap1.ddns.net:2404
rem166.hopto.org:2404
TEMPREM2021.kozow.com:2404

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

Threat name:

Remcos

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/181c15869192fd251b5b1739ac117d7de7785c91e6a32b50c8c18ddf56746321

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.