MalwareBazaar Database

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

OLE dump

MalwareBazaar was able to identify 22 sections in this file using oledump:

OLE vba

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

Intelligence

File Origin

Origin country :

NL

Vendor Threat Intelligence

ANY.RUN Malicious

Malware family:

n/a

ID:

1

File name:

fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead.xls

Verdict:

Malicious activity

Analysis date:

2024-04-16 16:01:15 UTC

Tags:

phishing phishing-xls

Link:

https://app.any.run/tasks/aa109e30-ac8d-436a-bd34-501f01e11133

Note:

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

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Creating a window

DNS request

Sending an HTTP GET request

Searching for synchronization primitives

Launching a process

Сreating synchronization primitives

Creating a file

Connection attempt

Sending a custom TCP request

Connection attempt by exploiting the app vulnerability

Sending a custom TCP request by exploiting the app vulnerability

Launching a process by exploiting the app vulnerability

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead/results/dashboard

Payload URLs

URL

File name

http://lnkz.at/V5Prg

Embedded Ole

Behaviour

SuspiciousRTF detected

Document image

Image:

Download PNG

FileScan.IO Malicious

Verdict:

Malicious

Threat level:

  10/10

Confidence:

100%

Tags:

embedequation exploit form macros phishing shellcode

Link:

https://www.filescan.io/uploads/661e99f4c5dabc22b200a5d3/reports/199ef9a5-8889-4c4b-ac60-1c9fe9848a58/overview

Hybrid Analysis CVE-2017-0199

Verdict:

Malicious

Labled as:

CVE-2017-0199

Link:

https://www.hybrid-analysis.com/sample/fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead

inlyse Malware.AI Benign

Label:

Benign

Suspicious Score:

3.2/10

Score Malicious:

33%

Score Benign:

67%

Link:

https://www.malware.ai/gui/files/?id=ef6bb713-7525-4db3-b2c2-7d715fa97d0d

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead

Details

Document With Few Pages

Document contains between one and three pages of content. Most malicious documents are sparse in page count.

Joe Sandbox Remcos

Result

Threat name:

Remcos

Alert

Create hunting rule

Detection:

malicious

Classification:

spre.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1426847

Signature

Antivirus detection for dropped file

Antivirus detection for URL or domain

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Connects to a pastebin service (likely for C&C)

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to inject code into remote processes

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

Creates autostart registry keys with suspicious values (likely registry only malware)

Delayed program exit found

Detected Remcos RAT

Document exploit detected (process start blacklist hit)

Excel sheet contains many unusual embedded objects

Found malware configuration

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Microsoft Office drops suspicious files

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

Multi AV Scanner detection for submitted file

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Office drops RTF 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

Searches for Windows Mail specific files

Shellcode detected

Sigma detected: Base64 Encoded PowerShell Command Detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: Equation Editor Network Connection

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands

Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet

Sigma detected: Powershell download and load assembly

Sigma detected: Powershell download payload from hardcoded c2 list

Sigma detected: Remcos

Sigma detected: Script Initiated Connection to Non-Local Network

Sigma detected: Suspicious Microsoft Office Child Process

Sigma detected: WScript or CScript Dropper

Snort IDS alert for network traffic

Suspicious execution chain found

Suspicious powershell command line found

System process connects to network (likely due to code injection or exploit)

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

Very long command line found

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Writes to foreign memory regions

Wscript starts Powershell (via cmd or directly)

Yara detected Generic Downloader

Yara detected MalDoc

Yara detected Powershell download and execute

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead/

ReversingLabs TitaniumCloud Document-Excel.Exploit.CVE-2017-0199

Threat name:

Document-Excel.Exploit.CVE-2017-0199

Alert

Create hunting rule

Status:

Malicious

First seen:

2024-04-16 12:07:26 UTC

File Type:

Document

Extracted files:

45

AV detection:

14 of 38 (36.84%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7u3dzco2n63vdovmjw3lyti4ymbmrdq6725bx6vts6tcpvgb52wq._file

Hatching Triage remcos

Result

Malware family:

remcos

Alert

Create hunting rule

Score:

  10/10

Tags:

family:remcos botnet:remotehost collection persistence rat spyware stealer

Link:

https://tria.ge/reports/240416-sylmbsfb9v/

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 behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

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

Accesses Microsoft Outlook accounts

Adds Run key to start application

Abuses OpenXML format to download file from external location

Reads user/profile data of web browsers

Blocklisted process makes network request

NirSoft MailPassView

NirSoft WebBrowserPassView

Nirsoft

Remcos

Malware Config

C2 Extraction:

ezege.duckdns.org:14645

VMRay Remcos

Malware family:

Remcos

Alert

Create hunting rule

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fd363c89da6f/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/fd363c89da6fb751baac4db6bc4d1cc302c88e1efeba1bfab397a627d4c1eead

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.

File information

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

Comments