MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc. 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: 14

Maldoc score: 4

Intelligence 14 IOCs YARA 15 File information Comments

SHA256 hash:	9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc
SHA3-384 hash:	032b4af01edaba97543eb9573a1fee635b4e9299a845787decbdb36c830d5a03ea7f2c274e3a90d0e0aa55bf5395d101
SHA1 hash:	8deca9322e55d481319797bc01075896a0993bf8
MD5 hash:	9fed810db3e8b1ab0cb21e5975f00824
humanhash:	sad-coffee-mockingbird-oscar
File name:	Product List_Estiapack_Greece.xls
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	400'896 bytes
First seen:	2023-12-05 14:50:34 UTC
Last seen:	Never
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	12288:zOeEmqKjij4a3DjMRJ6w0HltZ1oFftt4j4T:zOeE1EezjAJkZ1EfT4j4
TLSH	T1C284122AF141C96FCC074870DCEAB4CBD3789C89DE45835B31D97B9F4132AE5826AD85
TrID	46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4) 26.7% (.XLS) Microsoft Excel sheet (32500/1/3) 20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2) 6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter	abuse_ch
Tags:	RemcosRAT xls

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id

Maldoc score: 4

OLE dump

MalwareBazaar was able to identify 15 sections in this file using oledump:

Section ID	Section size	Section name
1	114 bytes	CompObj
2	244 bytes	DocumentSummaryInformation
3	200 bytes	SummaryInformation
4	99 bytes	MBD002336F8/CompObj
5	200807 bytes	MBD002336F8/Package
6	458 bytes	MBD002336F9/Ole
7	182065 bytes	Workbook
8	523 bytes	_VBA_PROJECT_CUR/PROJECT
9	104 bytes	_VBA_PROJECT_CUR/PROJECTwm
10	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
11	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet2
12	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet3
13	985 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
14	2644 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
15	553 bytes	_VBA_PROJECT_CUR/VBA/dir

OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

Type	Keyword	Description
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin

# of uploads :

# of downloads :

323

Origin country :

Vendor Threat Intelligence

Verdict:

Legit

File type:

application/vnd.ms-excel

Has a screenshot:

False

Contains macros:

False

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/462648/

Detection(s):

TwinWave.EvilDoc.FormbookPicturesOfU.XL.220411.UNOFFICIAL

SecuriteInfo.com.Trojan.GenericKD.64927369.3758.6623.UNOFFICIAL

Sanesecurity.Badmacro.Xls.BadUsr1.UNOFFICIAL

SecuriteInfo.com.Trojan.VBA.Agent-16.UNOFFICIAL

SecuriteInfo.com.Other.Malware-gen.19728.9505.UNOFFICIAL

Sanesecurity.Badmacro.Xls.badForm1.UNOFFICIAL

TwinWave.EvilDoc.FormbookPicturesOfU.MSOLE2.220411.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Searching for synchronization primitives

Launching a process

Сreating synchronization primitives

Creating a file

DNS request

Sending a custom TCP request

Sending an HTTP GET request

Launching a process by exploiting the app vulnerability

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc/results/dashboard

Payload URLs

URL

File name

http://172.245.142.51/iji/microsoftdecidedtodelteentireprivatehistorycookiecacheeverythingfromthepc.Doc

Embedded Ole

Behaviour

SuspiciousRTF detected

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

embedequation exploit macros shellcode sload

Link:

https://www.filescan.io/uploads/656f38de855eb2633d605c95/reports/d20aaff0-24c1-48e1-81ca-eaf4397b4a8b/overview

Verdict:

Malicious

Labled as:

CVE-2017-0199

Link:

https://www.hybrid-analysis.com/sample/9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc

Label:

Benign

Suspicious Score:

4.0/10

Score Malicious:

Score Benign:

Link:

https://www.malware.ai/gui/files/?id=1c36b323-15a5-43dc-983c-5673df375055

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc

Result

Threat name:

Remcos

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1354000

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Adds a directory exclusion to Windows Defender

Allocates memory in foreign processes

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

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

Delayed program exit found

Document embeds suspicious OLE2 link

Excel sheet contains many unusual embedded objects

Found malware configuration

Injects a PE file into a foreign processes

Injects files into Windows application

Installs new ROOT certificates

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Microsoft Office drops suspicious files

Microsoft Office launches external ms-search protocol handler (WebDAV)

Multi AV Scanner detection for dropped file

Office equation editor drops PE file

Office equation editor establishes network connection

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Office viewer loads remote template

Powershell uses Background Intelligent Transfer Service (BITS)

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Remcos

Sigma detected: Scheduled temp file as task from temp location

Uses schtasks.exe or at.exe to add and modify task schedules

Writes to foreign memory regions

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Detection:

cve-2017-11882-shellcode

Link:

https://mwdb.cert.pl/sample/9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc/

Threat name:

Win32.Trojan.Znyonm

Status:

Malicious

First seen:

2023-12-05 13:45:23 UTC

File Type:

Document

Extracted files:

AV detection:

9 of 23 (39.13%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=taaojh5pkal3kqspggheswlv6dmpjcju7qhocervhowiovdso7oa._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:grace rat

Link:

https://tria.ge/reports/231205-r75wwsca75/

Behaviour

Checks processor information in registry

Creates scheduled task(s)

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

Office loads VBA resources, possible macro or embedded object present

Enumerates physical storage devices

Drops file in System32 directory

Suspicious use of SetThreadContext

Abuses OpenXML format to download file from external location

Executes dropped EXE

Loads dropped DLL

Uses the VBS compiler for execution

Blocklisted process makes network request

Downloads MZ/PE file

Remcos

Malware Config

C2 Extraction:

grantadistciaret.com:3212

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/9800e49faf50/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/9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc

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:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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

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

Rule name:	informational_win_ole_protected Create hunting rule
Author:	Jeff White (karttoon@gmail.com) @noottrak
Description:	Identify OLE Project protection within documents.

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

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

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	office_document_vba Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	Office document with embedded VBA
Reference:	https://github.com/jipegit/

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

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

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

File information

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

Malspam

RemcosRAT

xls 9800e49faf5017b5424f318e495975f0d8f48934fc0ee112353bac87547277dc

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/462648/

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