MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1. 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: 17

Intelligence 17 IOCs YARA 22 File information Comments 1

SHA256 hash:	3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1
SHA3-384 hash:	c6f9113ccaedbdb5d68cdab77f97bd1afb664faf23bba14d77da47f6a0039e12ec360e62ebbdfe213faa5c774c770a14
SHA1 hash:	05f857128c9bfa1ca9f8a74366d5e890da7354c2
MD5 hash:	a273d142217177ab8013d6ebeafbc22f
humanhash:	wolfram-lima-ten-robin
File name:	a273d142217177ab8013d6ebeafbc22f
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	2'627'072 bytes
First seen:	2024-07-01 11:32:02 UTC
Last seen:	2024-07-01 13:21:34 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	97f00b2383bd4369e5094078fdccae7a (2 x RedLineStealer, 2 x Formbook, 1 x AsyncRAT)
ssdeep	49152:zF50a6aPVOFMx3SmroCZscivbS6mqxEWoKmqZJffp3vSsqPUYeaw1GxNOmUTREvS:nroA7PFdUC
Threatray	4'240 similar samples on MalwareBazaar
TLSH	T1FBC5BE15E3E801A8D87BD734CA62A332DBB078961730D58F0659D6592F73EA19B3F312
TrID	72.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 13.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 2.5% (.EXE) OS/2 Executable (generic) (2029/13) 2.5% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter	zbetcheckin
Tags:	64 exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

366

Origin country :

Vendor Threat Intelligence

Malware family:

dcrat

ID:

File name:

Document Mod Malware.zip

Verdict:

Malicious activity

Analysis date:

2024-07-01 21:37:34 UTC

Tags:

hausbomber dcrat loader opendir bdaejec stealer redline metastealer gcleaner upx netreactor aspack trojan lokibot evasion exfiltration pastebin lumma risepro xworm antivm

Link:

https://app.any.run/tasks/25155eb6-6332-40f7-8188-1486b658240e

Note:

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

Detection(s):

SecuriteInfo.com.Win64.RATX-gen.15883.9555.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=668293fc4aef5fb03e2ed099win10vpnfull_triage

Tags:

Execution Network Static Stealth Remcos

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file

Launching a process

Сreating synchronization primitives

DNS request

Connection attempt

Connection attempt to an infection source

Sending an HTTP GET request

Query of malicious DNS domain

Sending a TCP request to an infection source

Unauthorized injection to a system process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

fingerprint hacktool lolbin microsoft_visual_cc packed regedit remcos remote shell32

Link:

https://www.filescan.io/uploads/668293b9910ce98966fb581b/reports/03f86383-aa37-4e57-957b-018bce92c279/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1

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/1950902d-f516-447b-ac79-dde6812936a4

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1465248

Signature

AI detected suspicious sample

Allocates memory in foreign processes

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

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

Drops PE files to the user root directory

Found malware configuration

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Writes to foreign memory regions

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1/

Threat name:

Win64.Backdoor.Remcos

Status:

Malicious

First seen:

2024-07-01 10:27:01 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=hs2ilj3j63usknxvq3zioo6wutmpwwyqm5z2ycqwuu2o6ni4bpyq._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

3e32447ea3b5f07c7f6a180269f5443378acb32c5d0e0bf01a5e39264f691587

RemcosRAT

472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1

RemcosRAT

a0c4a547b08cd4669362420f9c50b04f084e0174f13911f4e8b95cec7ba12cd8

RemcosRAT

ab4c9b244a1604655032a8f69acc4273265fa35337906e05a1dc2b274b3b13a6

RemcosRAT

fcc20fe90b357bafc8ac88a33981885be904b1ce430a4ec8b8aed5caa357df92

RemcosRAT

+ 4'230 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:2556 rat

Link:

https://tria.ge/reports/240701-nm94bssdrj/

Behaviour

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Remcos

Malware Config

C2 Extraction:

bossnacarpet.com:2556
vegetachcnc.com:2556

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/8eaf5a6f-52ea-4e59-8d9d-719bfc71bab2

Unpacked files

SH256 hash:

3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1

MD5 hash:

a273d142217177ab8013d6ebeafbc22f

SHA1 hash:

05f857128c9bfa1ca9f8a74366d5e890da7354c2

Link:

https://www.unpac.me/results/29f60a27-dbc1-4656-a670-6e6cd6067d71/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/3cb485a769f6/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/3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1

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:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

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

Rule name:	DebuggerCheck__MemoryWorkingSet Create hunting rule
Author:	Fernando Mercês
Description:	Anti-debug process memory working set size check
Reference:	http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/

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

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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

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:	Jupyter_infostealer Create hunting rule
Author:	CD_R0M_
Description:	Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022

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

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

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

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

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

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

File information

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

Web download

RemcosRAT

exe 3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2916198/

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 (GUARD_CF)	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::CreateWellKnownSid ADVAPI32.dll::RevertToSelf ADVAPI32.dll::GetSecurityDescriptorLength
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetWindowsAccountDomainSid
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessA ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken ADVAPI32.dll::SetThreadToken KERNEL32.dll::VirtualAllocExNuma KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::DeleteVolumeMountPointW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationW KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AllocConsole KERNEL32.dll::FreeConsole KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileExW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileExW KERNEL32.dll::ReplaceFileW
WIN_BASE_USER_API	Retrieves Account Information	ADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_API	Can Encrypt Files	bcrypt.dll::BCryptDecrypt bcrypt.dll::BCryptDestroyKey bcrypt.dll::BCryptEncrypt bcrypt.dll::BCryptGenRandom bcrypt.dll::BCryptImportKey bcrypt.dll::BCryptOpenAlgorithmProvider
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyExW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryInfoKeyW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExA ADVAPI32.dll::RegSetValueExW

Comments

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zbet commented on 2024-07-01 11:32:03 UTC

url : hxxp://172.245.135.155/S3006M/csrss.exe