MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342. 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

SHA256 hash:	a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342
SHA3-384 hash:	91940dbe047daa316153cd2be705ff22e17e607434c5d3aa542bb4844540912289560de1b450a5b58165735a579f6f8e
SHA1 hash:	5d0492dae681394fd28254da3ec09dba870cc45e
MD5 hash:	240da3fb4b1dfe2a7508c3d4ae401075
humanhash:	idaho-hamper-london-equal
File name:	PAYMENT SLIP.xlsx
Download:	download sample
Signature	RemcosRAT Alert Create hunting rule
File size:	754'564 bytes
First seen:	2023-04-21 12:42:19 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep	12288:ZBiwQ/zivHEZZ8ssiNWQVENYxSwo8o3w5t+lyVPTTZ8cUNSWNazE11KOTl:8gWZ8zcuaS05PTKcI+zK1KMl
TLSH	T176F433405A35A6225741293FC0E52A5BEB0D24F7649522AE07BDC570C73BBF2F6A0F4B
TrID	60.1% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7) 30.9% (.ZIP) Open Packaging Conventions container (17500/1/4) 7.0% (.ZIP) ZIP compressed archive (4000/1) 1.7% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter	malwarelabnet
Tags:	CVE-2017-11882 remcos RemcosRAT xlsx

Office OLE Information

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

OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section ID	Section size	Section name
A1	1009939 bytes	olE10nATIve
A2	0 bytes	uIOzX0nWuB

Intelligence

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File Origin

# of uploads :

1

# of downloads :

311

Origin country :

CA

Vendor Threat Intelligence

ANY.RUN remcos

Malware family:

remcos

Alert

Create hunting rule

ID:

1

File name:

PAYMENT SLIP.xlsx

Verdict:

Malicious activity

Analysis date:

2023-04-21 12:42:43 UTC

Tags:

exploit cve-2017-11882 loader remcos

Link:

https://app.any.run/tasks/76fc7331-6fd0-467f-96c9-2dacfef34933

Note:

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

CAPE Sandbox

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/383942/

ClamAV Detected

Detection(s):

Sanesecurity.Malware.27429.XmlHeur.Autoload.UNOFFICIAL

Alert

Create hunting rule

SecuriteInfo.com.Malware.XML.Autoload-1.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.GMouldPicturesOfU.XL.220815.UNOFFICIAL

Alert

Create hunting rule

Sanesecurity.Shelter.Malware.BadMacro.BadOleNatEquat.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.EQEditorFBShellzLetMeBlowYourMind.20210218.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Creating a window

Searching for synchronization primitives

Launching a process

Creating a file in the %AppData% directory

Сreating synchronization primitives

Sending an HTTP GET request to an infection source by exploiting the app vulnerability

Creating a process from a recently created file

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

OOXML Excel File with Embedding Objects

Link:

https://app.docguard.net/a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342/results/dashboard

Behaviour

BlacklistAPI detected

Document image

Image:

Download PNG

FileScan.IO Malicious

Verdict:

Malicious

Threat level:

  10/10

Confidence:

92%

Tags:

embedequation exploit shellcode

Link:

https://www.filescan.io/uploads/644284d790012911b698c725/reports/59707288-e3c2-496d-84b9-a6003e411b32/overview

Hybrid Analysis Msoffice/malicious_confidence_100%

Verdict:

Malicious

Labled as:

Msoffice/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342

inlyse Malware.AI Malicious

Label:

Malicious

Suspicious Score:

9.1/10

Score Malicious:

91%

Score Benign:

9%

Link:

https://www.malware.ai/gui/files/?id=5ee9bca3-4a7d-45eb-af2e-abbe2f94aa86

Joe Sandbox Remcos

Result

Threat name:

Remcos

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1218611

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

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 Firefox passwords or cookies

Delayed program exit found

Injects a PE file into a foreign processes

Installs a global keyboard hook

Machine Learning detection for dropped file

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

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)

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Remcos

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342/

ReversingLabs TitaniumCloud Document-OLE.Exploit.CVE-2017-11882

Threat name:

Document-OLE.Exploit.CVE-2017-11882

Alert

Create hunting rule

Status:

Malicious

First seen:

2023-04-18 12:05:50 UTC

File Type:

Document

Extracted files:

21

AV detection:

22 of 37 (59.46%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ujx2juqwtiqhnzkjr7vlhf5mdeg5h7pn6dmjqavp5t4odwbtwnba._file

Hatching Triage remcos

Result

Malware family:

remcos

Alert

Create hunting rule

Score:

  10/10

Tags:

family:remcos botnet:eric host persistence rat

Link:

https://tria.ge/reports/230421-pxxfnafe74/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

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

Enumerates physical storage devices

Suspicious use of SetThreadContext

Adds Run key to start application

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Remcos

Malware Config

C2 Extraction:

craigjonson1.gotdns.ch:2011

VMRay Remcos

Malware family:

Remcos

Alert

Create hunting rule

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a26fa4d2169a/report/overview.html

VirusTotal

Please note that we are no longer able to provide a coverage score for Virus Total.

YOROI YOMI Malicious File

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/a26fa4d2169a2076e5498feab397ac190dd3fdedf0d89802afecf8e1d833b342

File information

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

Cape

https://www.capesandbox.com/analysis/383942/

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