MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a. 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 26 File information Comments

SHA256 hash:	1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a
SHA3-384 hash:	33a27a431ae194b08978f67c12f1e7e13ebe71ad1fea8f6bee10b65729233674b29cabc040f7dce45e0d72697fcd1576
SHA1 hash:	5db2d355e463938d31f769055ba198847080c8d0
MD5 hash:	839ee918186c40f1aefdb9324b76d23d
humanhash:	spaghetti-autumn-sad-lion
File name:	bOV2.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	238'080 bytes
First seen:	2023-08-20 18:51:26 UTC
Last seen:	2023-09-11 12:07:21 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	bc4f8e98d1041d53dd63bfb91ed10d0a (52 x RemcosRAT)
ssdeep	6144:MvGSN9gWuLpcBKnVBYAsmrzpyDfOXXV1B:MvbGWulcBKV3uOX
TLSH	T1973412986B2ED869D194C6FC8524D5F222E95C7E0D2665CE1BD8FE2FFD27200ECD10A1
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 :

312

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

bOV2.exe

Verdict:

Malicious activity

Analysis date:

2023-08-20 18:55:28 UTC

Tags:

rat remcos remote keylogger

Link:

https://app.any.run/tasks/d733646d-92e6-4b37-bffd-aef07366f013

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/443842/

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 a custom TCP request

Sending an HTTP GET request

Creating a file

Unauthorized injection to a recently created process

Restart of the analyzed sample

Reading critical registry keys

Creating a file in the %temp% directory

Stealing user critical data

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

greyware lolbin packed shell32

Link:

https://www.filescan.io/uploads/64e260d42a89064e5593cbf0/reports/07751195-72e3-497f-936f-0e28a6967d23/overview

Verdict:

Malicious

Labled as:

Dacic.A9349469.A.Generic

Link:

https://www.hybrid-analysis.com/sample/1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a

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/74875f4b-afd2-4ddf-92db-64fba0cbcaab

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1294160

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 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)

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

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2023-08-20 18:52:05 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=djoaco744qc3cvvtctjlvq63r5hex7zgihwlu5jecybzyxp7l4va._file

Verdict:

malicious

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:dumaugaust rat spyware stealer upx

Link:

https://tria.ge/reports/230820-xh22laae5t/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

UPX packed file

NirSoft MailPassView

NirSoft WebBrowserPassView

Nirsoft

Remcos

Malware Config

C2 Extraction:

exbanebiec.duckdns.org:9596

Unpacked files

SH256 hash:

c37598c3880241c735183a82b71bcec770c9d886ee504344260c924eddb0ebcc

MD5 hash:

45e66307e6396fde65c2a29689efc5c3

SHA1 hash:

462c08b11eb6bb3a48f061d5643a27e83b72f86d

Detections:

Remcos

win_remcos_auto

Link:

https://www.unpac.me/results/6340e619-bbfe-427f-9878-dfc2d900ab4e/

SH256 hash:

1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a

MD5 hash:

839ee918186c40f1aefdb9324b76d23d

SHA1 hash:

5db2d355e463938d31f769055ba198847080c8d0

Link:

https://www.unpac.me/results/6340e619-bbfe-427f-9878-dfc2d900ab4e/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/1a5c013bfce4/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/1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a

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:	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:	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 1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a

(this sample)

Link

https://www.virustotal.com/gui/file/1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/443842/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample