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 15 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

Malware family:

n/a

ID:

1

File name:

bc4b1644ea07e01ed1eb327ae45a1bfe6a8e1d9e6b8d27b356813200ac7ac79f.xls

Verdict:

No threats detected

Analysis date:

2024-05-07 07:46:40 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/4508bb4d-f3bd-4884-a850-2f47db9cdd48

Note:

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

BitDam Legit

Verdict:

Legit

File type:

application/vnd.ms-excel

Has a screenshot:

False

Contains macros:

False

ClamAV Detected

Detection(s):

TwinWave.EvilDoc.93TilInfinity.20240412.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Creating a window

Searching for the window

DNS request

Сreating synchronization primitives

Launching a process

Searching for the browser window

Connection attempt

Sending a custom TCP request

Creating a file

Connection attempt by exploiting the app vulnerability

Sending an HTTP GET request

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/bc4b1644ea07e01ed1eb327ae45a1bfe6a8e1d9e6b8d27b356813200ac7ac79f/results/dashboard

Payload URLs

URL

File name

http://sorty.cc/XttBz

Embedded Ole

Behaviour

BlacklistAPI detected

Document image

Image:

Download PNG

FileScan.IO Likely Malicious

Verdict:

Likely Malicious

Threat level:

  7.5/10

Confidence:

100%

Tags:

embedequation exploit language-tr macros

Link:

https://www.filescan.io/uploads/6639dad81c9796b80ab4ea04/reports/59ef0448-6cbf-469b-9417-860ebd9a78b3/overview

Hybrid Analysis Unknown

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/bc4b1644ea07e01ed1eb327ae45a1bfe6a8e1d9e6b8d27b356813200ac7ac79f

inlyse Malware.AI

Gathering data

Joe Sandbox Remcos

Result

Threat name:

Remcos

Alert

Create hunting rule

Detection:

malicious

Classification:

phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1437265

Signature

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 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

Detected Remcos RAT

Document exploit detected (process start blacklist hit)

Drops PE files with benign system names

Excel sheet contains many unusual embedded objects

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

Installs new ROOT certificates

Machine Learning detection for dropped file

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 domain / URL

Multi AV Scanner detection for dropped file

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 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

Sample uses process hollowing technique

Searches for Windows Mail specific files

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: Equation Editor Network Connection

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Files With System Process Name In Unsuspected Locations

Sigma detected: Invoke-Obfuscation CLIP+ Launcher

Sigma detected: Invoke-Obfuscation VAR+ Launcher

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Remcos

Sigma detected: Schedule system process

Sigma detected: Suspect Svchost Activity

Sigma detected: Suspicious Binary In User Directory Spawned From Office Application

Sigma detected: Suspicious Microsoft Office Child Process

Sigma detected: System File Execution Location Anomaly

Sigma detected: Wab/Wabmig Unusual Parent Or Child Processes

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

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

Writes to foreign memory regions

Yara detected AntiVM3

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/bc4b1644ea07e01ed1eb327ae45a1bfe6a8e1d9e6b8d27b356813200ac7ac79f/

ReversingLabs TitaniumCloud Document-Office.Trojan.Casdet

Threat name:

Document-Office.Trojan.Casdet

Alert

Create hunting rule

Status:

Malicious

First seen:

2024-05-06 03:49:46 UTC

File Type:

Document

Extracted files:

40

AV detection:

9 of 24 (37.50%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xrfrmrhka7qb5uplgj5oiwq37zvi4hm6nogspm2wqezabld2y6pq._file

Hatching Triage Malicious

Result

Malware family:

n/a

Score:

  8/10

Tags:

n/a

Link:

https://tria.ge/reports/240507-jhjclafb4s/

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 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

Abuses OpenXML format to download file from external location

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

VMRay Malicious

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/bc4b1644ea07/report/overview.html

VirusTotal

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

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.

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