MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af. 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: 18

Intelligence 18 IOCs YARA 35 File information Comments

SHA256 hash:	049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af
SHA3-384 hash:	ad6baf8494c40c05dd08d4e1c562c165822224783b25405956777252934ae157a1b0eb959e32290c576ad419b9cbfdbb
SHA1 hash:	d87d2d9f86632cb0bfbca8db5fe5e623a1b46b5e
MD5 hash:	01c3b8cb814f0d32905ac461c62d5e13
humanhash:	foxtrot-coffee-harry-comet
File name:	bUe7.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	239'104 bytes
First seen:	2024-03-13 09:07:43 UTC
Last seen:	2024-03-18 07:07:42 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	bc4f8e98d1041d53dd63bfb91ed10d0a (52 x RemcosRAT)
ssdeep	6144:jmvl3n8iOiB4RBucKa3h80tK2gBWvADGGw1iN:SvlX8i8RB5JvADGGM
Threatray	3'659 similar samples on MalwareBazaar
TLSH	T1EB3412D96F66DC94F28050F45802D1F072DE2CA61A93369D4BE4BF17FC79640BEA60A3
TrID	54.9% (.EXE) UPX compressed Win32 Executable (27066/9/6) 13.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.1% (.EXE) Win32 Executable (generic) (4504/4/1) 4.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	c4d48eaa8ad4d4f8 (1'212 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter	pmelson
Tags:	exe remcos RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

422

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af.exe

Verdict:

Malicious activity

Analysis date:

2024-03-13 09:08:56 UTC

Tags:

rat remcos remote keylogger

Link:

https://app.any.run/tasks/c200c7c3-140a-4dc0-8b30-71b1605f4483

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/478867/

Detection(s):

Win.Trojan.Remcos-9841897-0

Win.Trojan.Remcos-10002580-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Setting a keyboard event handler

Connection attempt to an infection source

Creating a file

DNS request

Connection attempt

Sending an HTTP GET request

Unauthorized injection to a recently created process

Restart of the analyzed sample

Reading critical registry keys

Creating a file in the %temp% directory

Query of malicious DNS domain

Sending a TCP request to an infection source

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

crypto evasive fingerprint hook keylogger lolbin packed packed packed rat shell32 upx

Link:

https://www.filescan.io/uploads/65f16cf587137159d43f52a7/reports/55e1c46c-1a69-4c6f-abad-0eb7b73c83d1/overview

Verdict:

Malicious

Labled as:

Backdoor.Remcos

Link:

https://www.hybrid-analysis.com/sample/049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/ef1ccc69-4a27-4313-b152-c1a0fe02c43f

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1408098

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to inject code into remote processes

Contains functionality to register a low level keyboard hook

Contains functionality to steal Chrome passwords or cookies

Contains functionality to steal Firefox passwords or cookies

Contains functionalty to change the wallpaper

Delayed program exit found

Found malware configuration

Installs a global keyboard hook

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Sigma detected: Remcos

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Instant Messenger accounts or passwords

Tries to steal Mail credentials (via file / registry access)

Tries to steal Mail credentials (via file registry)

Uses dynamic DNS services

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af/

Threat name:

Win32.Trojan.Remcos

Status:

Malicious

First seen:

2024-03-13 09:08:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=asnnpgeptkwsph5wqks2wtji47sodxvoxlzsgrnqreopj7akuoxq._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

530899098de9bc4a8be22abaffba4a79fd215d0cd06337bb872421dffe6598ad

RemcosRAT

5b935616f3d93c9168f3af28c4aa108118607afcb98e9843325ee6fabdb58dde

RemcosRAT

81c7aaa41463ab95e180bdca4997b5ef54a97b107e425ff07bcb6edc8be52727

RemcosRAT

b447cfa88f6896a02d8aee885d8803b2cb0c61f0a5934d4017f372bb8bc3a2ca

RemcosRAT

e63c4cc9ebb0a91cde1762188deecc60c3fa5340d7ec967fb6b886ebdf574e94

RemcosRAT

+ 3'649 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:abulo_march2024 collection rat spyware stealer upx

Link:

https://tria.ge/reports/240313-k3wdbshd9w/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Reads user/profile data of web browsers

UPX packed file

NirSoft MailPassView

NirSoft WebBrowserPassView

Nirsoft

Remcos

Malware Config

C2 Extraction:

salwanazeeze.duckdns.org:9595
salwanazeeze.ddns.net:9595

Unpacked files

SH256 hash:

6e8001c722309c96aa11b6d12d2e0e6028468123979879fafa2ac4b6bb3889ab

MD5 hash:

ebe36637094d5d311ef0ac2d092d03de

SHA1 hash:

215ecf39d2c35c4f617b74bd5533faf2b43daa44

Detections:

Remcos

win_remcos_w0

win_remcos_auto

malware_windows_remcos_rat

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Link:

https://www.unpac.me/results/87100f7a-9893-4e3a-8bb2-44900efcc547/

SH256 hash:

049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af

MD5 hash:

01c3b8cb814f0d32905ac461c62d5e13

SHA1 hash:

d87d2d9f86632cb0bfbca8db5fe5e623a1b46b5e

Link:

https://www.unpac.me/results/87100f7a-9893-4e3a-8bb2-44900efcc547/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/049ad7988f9a/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/049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	iexplorer_remcos Create hunting rule
Author:	iam-py-test
Description:	Detect iexplorer being taken over by Remcos

Rule name:	INDICATOR_EXE_Packed_MPress Create hunting rule
Author:	ditekSHen
Description:	Detects executables built or packed with MPress PE compressor

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Rule name:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	QbotStuff Create hunting rule
Author:	anonymous

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

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	TeslaCryptPackedMalware Create hunting rule

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	UPXv20MarkusLaszloReiser Create hunting rule
Author:	malware-lu

Rule name:	upx_3 Create hunting rule
Author:	Kevin Falcoz
Description:	UPX 3.X

Rule name:	Windows_Trojan_Remcos_b296e965 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set

Rule name:	win_remcos_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.remcos.

Rule name:	win_remcos_w0 Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	yarahub_win_remcos_rat_unpacked_aug_2023 Create hunting rule
Author:	Matthew @ Embee_Research

Rule name:	yara_template Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

RemcosRAT

exe 049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af

(this sample)

Link

https://www.virustotal.com/gui/file/049ad7988f9aad279fb682a5ab4d28e7e4e1deaebaf32345b0891cf4fc0aa3af/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/478867/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::waveInOpen
URL_MONIKERS_API	Can Download & Execute components	urlmon.dll::URLDownloadToFileW
WIN_BASE_API	Uses Win Base API	KERNEL32.DLL::LoadLibraryA

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