MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3eaed42c0457e69736b65abc55639deba7e6bfb94948dd3ed8b5f6ca968a979. 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: 12

Intelligence 12 IOCs YARA 10 File information Comments

SHA256 hash:	a3eaed42c0457e69736b65abc55639deba7e6bfb94948dd3ed8b5f6ca968a979
SHA3-384 hash:	8a384e947f9922fac37b9d66f8af4b2475928787fdb7d86bbca96322fa3a34946a3efcf8d07c55e851fdc0062c9236d7
SHA1 hash:	0678a1ca625aebb6e88d38e3dc0796be573b5c06
MD5 hash:	cde0aa36b80beafa74e258c5384ab684
humanhash:	lactose-ohio-artist-fillet
File name:	cde0aa36b80beafa74e258c5384ab684.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	143'872 bytes
First seen:	2022-07-29 14:44:20 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	9f4693fc0c511135129493f2161d1e86 (253 x Neshta, 15 x Formbook, 14 x AgentTesla)
ssdeep	3072:sr85CQpsF1TbPzuMsIFSHNThy+JP/P69r1LhzYTGWVvJ8f2F:k9Q2F13jsIFSHNT7P/P6V1LhzOv2fm
TLSH	T1D8E34B13FA46D0B2E42551F849066B31CEBC7C323A192173D79FCA85DD79482E816EAF
TrID	88.1% (.EXE) Win32 Executable Borland Delphi 6 (262638/61) 4.3% (.SCR) Windows screen saver (13101/52/3) 2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 1.5% (.EXE) Win32 Executable (generic) (4505/5/1) 1.0% (.MZP) WinArchiver Mountable compressed Archive (3000/1)
File icon (PE):
dhash icon	989894b49c9494f0 (43 x RemcosRAT)
Reporter	abuse_ch
Tags:	exe RAT RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

339

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/295113/

Detection(s):

Win.Trojan.Neshuta-1

PUA.Win.Packer.Pequake-4

Win.Virus.Neshta-7101689-0

Win.Malware.Azden-7587127-0

Win.Malware.Rescoms-6598304-0

Win.Malware.Zusy-6832224-0

Win.Trojan.Jadtre-5

Result

Verdict:

Malware

Maliciousness:

Behaviour

Enabling the 'hidden' option for recently created files

Creating a file

Running batch commands

Creating a process with a hidden window

Launching a process

Setting a keyboard event handler

DNS request

Creating a file in the Program Files subdirectories

Sending a custom TCP request

Creating a file in the %temp% subdirectories

Сreating synchronization primitives

Creating a file in the Windows directory

Creating a process from a recently created file

Modifying an executable file

Searching for analyzing tools

Creating a file in the %AppData% subdirectories

Enabling autorun with the shell\open\command registry branches

Infecting executable files

Result

Malware family:

n/a

Score:

5/10

Tags:

n/a

Link:

https://dragonfly.certego.net/analysis/27750/overview

Behaviour

MalwareBazaar

CheckCmdLine

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.

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d357bd42-87c5-4da0-b2a6-8fd2761f8ff1

Result

Threat name:

Remcos, Neshta

Detection:

malicious

Classification:

spre.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1043227

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to capture and log keystrokes

Contains functionality to detect virtual machines (IN, VMware)

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

Drops executable to a common third party application directory

Drops PE files with a suspicious file extension

Drops PE files with benign system names

Infects executable files (exe, dll, sys, html)

Installs a global keyboard hook

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

System process connects to network (likely due to code injection or exploit)

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

Tries to detect sandboxes and other dynamic analysis tools (window names)

Uses dynamic DNS services

Uses ping.exe to check the status of other devices and networks

Uses ping.exe to sleep

Yara detected Neshta

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a3eaed42c0457e69736b65abc55639deba7e6bfb94948dd3ed8b5f6ca968a979/

Threat name:

Win32.Virus.Neshta

Status:

Malicious

First seen:

2022-07-28 18:44:00 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

26 of 26 (100.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=upvo2qwaiv7gs43lmwv4kvrz325h4273sski3u7nrnpwzklivf4q._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:neshta family:remcos botnet:president persistence rat spyware stealer

Link:

https://tria.ge/reports/220729-r4qb2aaed3/

Behaviour

Modifies registry class

Runs ping.exe

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Drops file in Program Files directory

Drops file in Windows directory

Checks computer location settings

Loads dropped DLL

Reads user/profile data of web browsers

Executes dropped EXE

Modifies system executable filetype association

Neshta

Remcos

Malware Config

C2 Extraction:

winam.ddns.net:2401
dropy2.ddns.net:2400
dropy1.ddns.net:2404

Unpacked files

SH256 hash:

a3eaed42c0457e69736b65abc55639deba7e6bfb94948dd3ed8b5f6ca968a979

MD5 hash:

cde0aa36b80beafa74e258c5384ab684

SHA1 hash:

0678a1ca625aebb6e88d38e3dc0796be573b5c06

Detections:

win_neshta_g0

Link:

https://www.unpac.me/results/d06fb2ac-0b4f-416a-9e69-d741caa65cea/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a3eaed42c045/report/overview.html

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/a3eaed42c0457e69736b65abc55639deba7e6bfb94948dd3ed8b5f6ca968a979

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

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

Rule name:	MALWARE_Win_Neshta Create hunting rule
Author:	ditekSHen
Description:	Detects Neshta

Rule name:	MAL_Neshta_Generic Create hunting rule
Author:	Florian Roth
Description:	Detects Neshta malware
Reference:	Internal Research

Rule name:	MAL_Neshta_Generic_RID2DC9 Create hunting rule
Author:	Florian Roth
Description:	Detects Neshta malware
Reference:	Internal Research

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	remcos_rat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	REMCOS_RAT_variants Create hunting rule

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