MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81b135119adbe6ad608d9d31aff02e931324c4af47e630c38bb8056c74ee254a. 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: 10

Intelligence 10 IOCs YARA 3 File information Comments

SHA256 hash:	81b135119adbe6ad608d9d31aff02e931324c4af47e630c38bb8056c74ee254a
SHA3-384 hash:	d816ef5c5b4c93bf3e1ec0ea8c1cf6b9eb51dc9612391d52d1548d7f7370e083236be30809fc442d0e9e01ec9aa8bb9f
SHA1 hash:	8d27b935ed8f8631a01b6e9b6257157171435c93
MD5 hash:	30e337c43572c08f8250ce8f396587ec
humanhash:	california-oklahoma-autumn-pip
File name:	IMG-BANK-00878-000067-9089.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	382'128 bytes
First seen:	2020-08-14 15:36:30 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep	6144:tKWlIFHROQebZ5HCr6cZQalSN2JIH8qOY/Z6NHk96kADrsB:tdexnA9M6aQalSN2JHqOY/Z6IrB
Threatray	792 similar samples on MalwareBazaar
TLSH	7A84BF7D36909F11CA6D0AB9C0E3D43447E2E9877373D68A7E085AC62F417A68D893CD
Reporter	abuse_ch
Tags:	exe RAT RemcosRAT

abuse_ch

Malspam distributing RemcosRAT:

HELO: aerosoftint.ae
Sending IP: 139.64.247.73
From: Jangjoo Group of Companies< info@aerosoftint.ae>
Subject: Payment Details
Attachment: IMG-BANK-00878-000067-9089.rar (contains "IMG-BANK-00878-000067-9089.exe")

RemcosRAT C2:
www.valjan.in:5200 (185.19.85.183)

% Information related to '185.19.84.0 - 185.19.85.255'

% Abuse contact for '185.19.84.0 - 185.19.85.255' is 'abuse@datawire.ch'

inetnum: 185.19.84.0 - 185.19.85.255
netname: DATAWIRE-DATACENTERS
descr: CUSTOMERS ZG01
country: CH
admin-c: DA4314-RIPE
tech-c: DA4314-RIPE
status: ASSIGNED PA
mnt-by: DATAWIRE-NOC
created: 2013-09-23T14:18:55Z
last-modified: 2013-09-23T14:18:55Z
source: RIPE

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/46052/

Detection(s):

PUA.Win.Trojan.Generic-6629274-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Unauthorized injection to a recently created process

DNS request

Adding an access-denied ACE

Launching a process

Creating a file

Creating a file in the %AppData% subdirectories

Setting a global event handler for the keyboard

Sending a TCP request to an infection source

Enabling autorun by creating a file

Result

Threat name:

Remcos

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/430265

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains very large array initializations

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 an undocumented autostart registry key

Detected Remcos RAT

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/81b135119adbe6ad608d9d31aff02e931324c4af47e630c38bb8056c74ee254a/

Threat name:

ByteCode-MSIL.Infostealer.Stelega

Status:

Malicious

First seen:

2020-08-14 15:38:07 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=qgytkem23ptk2yentuy274bosmjsjrfpi7tdbq4lxacwy5hoevfa._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

2f07a5d8c1e6ac465e5d306b0fb8335aa41f3204b9bf9793337a849a93921a9a

RemcosRAT

3bdfaf82d5d56f2546be44b3355f8d72cc0508984586e0fba3d704a5adabf7d1

RemcosRAT

417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd

RemcosRAT

5623d23f830311afc91586eeae9824ede5dd4233d9b45a45a6bea4110514db48

RemcosRAT

56a2574ca6e3e3036a5bdcc9f17deade4bff0920373a8d9944fc9e297b970650

RemcosRAT

64ba0f4265f9ed3f3f9315ee0256b360827074d5f898a7eb07ed98dd5f7fec7e

RemcosRAT

c59842c19c1b3f0171b40eebfb3e98ddccc4237edcaaa62990a0881ee1f6f798

RemcosRAT

d455d29b53451b46b3c2cdb273e460d74b9d43f35d8fafeccc0590ed508269d1

RemcosRAT

da7ce8060ef04b847aeb11d727b9d8fad9526dc3314adce4ffa5e0b597ac5547

RemcosRAT

+ 782 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

rat family:remcos

Link:

https://tria.ge/reports/200814-4tttyp45d6/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Remcos

Malware Config

C2 Extraction:

www.valjan.in:5200

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/81b135119adbe6ad608d9d31aff02e931324c4af47e630c38bb8056c74ee254a

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