MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3. 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: 15

Intelligence 15 IOCs YARA 35 File information Comments

SHA256 hash:	071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3
SHA3-384 hash:	0853bd1e0c73e8216502b6b3f31ed2ad9da64a1ec82d1feb3b432850e0ff64e8f457f316b6e6f61667148e7305a141e6
SHA1 hash:	88cc61dd9d4fe262f499190bd2c22403b751ea7f
MD5 hash:	be321b28263f7b34439ed6384605d361
humanhash:	winner-salami-stairway-violet
File name:	bRZK.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	238'592 bytes
First seen:	2023-11-30 08:07:23 UTC
Last seen:	2023-12-13 08:07:23 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	bc4f8e98d1041d53dd63bfb91ed10d0a (52 x RemcosRAT)
ssdeep	6144:Umvl3n8iOiB4RBucKa3h80tK2gBWvADGGw6j1:5vlX8i8RB5JvADGGnj
Threatray	3'053 similar samples on MalwareBazaar
TLSH	T1963412A52F27EC54F2C090F45801E1F072EA1C6A0EA7664E0BE4BF57FC7E650B996062
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) (4505/5/1) 4.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter	pmelson
Tags:	exe remcos RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

335

Origin country :

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/461358/

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

DNS request

Sending an HTTP GET request

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Reading critical registry keys

Creating a file in the %temp% directory

Sending a custom TCP request

Stealing user critical data

Gathering data

Verdict:

Malicious

Labled as:

Dacic.A9349469.A.Generic

Link:

https://www.hybrid-analysis.com/sample/071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3

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/6b5013f0-1ff9-4b4e-8ba0-56f0e45c7bf6

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1350419

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 modify clipboard data

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 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/071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3/

Threat name:

Win32.Trojan.Remcos

Status:

Malicious

First seen:

2023-11-30 08:08:05 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 23 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=a4oejpiritqkd4gpl5q3zazww52nyp744djvruznqcny4rukpdrq._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

24dd50e989e9496c6833faea5c062a84aa800fd176df7c737d3d3999400cf66e

RemcosRAT

47429e294cd3e52f3b4984f1343428df1c0f66c8addf008ca8f65b8d260355e2

RemcosRAT

530899098de9bc4a8be22abaffba4a79fd215d0cd06337bb872421dffe6598ad

RemcosRAT

5370332f1c37afc41f5ef1780d6d991a7ce0b93e6790addc9b8917e63036f77f

RemcosRAT

7ae7bc73503088fd824d15cf451da52237a2b6b65a179dc51114fc01512c933f

RemcosRAT

+ 3'043 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:dumdec6474646 collection rat spyware stealer upx

Link:

https://tria.ge/reports/231130-j1jq3shf2v/

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:

money001.duckdns.org:9596

Unpacked files

SH256 hash:

b0a45d6a7101c7e67f0b6cc682891bfca3ad72f6452c0385c675beab0e101cf6

MD5 hash:

a7bc05b9ec5763c8941d30622187f491

SHA1 hash:

e2a9c2b19685cc7a00dd75a149c780d672753c37

Detections:

Remcos

win_remcos_w0

win_remcos_auto

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

malware_windows_remcos_rat

Link:

https://www.unpac.me/results/3e153487-d0bc-447f-9c63-3e20d0b60d4d/

SH256 hash:

071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3

MD5 hash:

be321b28263f7b34439ed6384605d361

SHA1 hash:

88cc61dd9d4fe262f499190bd2c22403b751ea7f

Link:

https://www.unpac.me/results/3e153487-d0bc-447f-9c63-3e20d0b60d4d/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/071c44bd1144/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/071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3

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

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 071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3

(this sample)

Link

https://www.virustotal.com/gui/file/071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/461358/

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