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 3 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

Vendor Threat Intelligence

ANY.RUN Malicious

Malware family:

n/a

ID:

1

File name:

case#_139739537_445143708.xls

Verdict:

Malicious activity

Analysis date:

2021-03-12 16:47:38 UTC

Tags:

macros ta505

Link:

https://app.any.run/tasks/8d15b523-7fc6-4f75-911d-23400a2d5244

Note:

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

BitDam Malicious

Verdict:

Malicious

File type:

application/vnd.ms-excel

Has a screenshot:

False

Contains macros:

True

CAPE Sandbox

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/123967/

ClamAV Detected

Detection(s):

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.QakySoWacky.M2.20210218.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

DNS request

Creating a file

Creating a process with a hidden window

Sending an HTTP GET request

Launching a process by exploiting the app vulnerability

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

Legacy Office File

Link:

https://app.docguard.net/6cf0a44011ec1e1a891d7d06357c4687634e42d65a3eecfe9180e608b5d6e150/results/dashboard

Payload URLs

URL

File name

_xlfn.TEXTJOIN

WorkBook

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Details

Autostarting Excel Macro Sheet

Excel contains Macrosheet logic that will trigger automatically upon document open.

Joe Sandbox Hidden Macro 4.0 CobaltStrike

Result

Threat name:

Hidden Macro 4.0 CobaltStrike

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/638054

Signature

Document exploit detected (drops PE files)

Document exploit detected (process start blacklist hit)

Document exploit detected (UrlDownloadToFile)

Drops PE files to the user root directory

Found Excel 4.0 Macro with suspicious formulas

Malicious sample detected (through community Yara rule)

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

Office process drops PE file

Sigma detected: Microsoft Office Product Spawning Windows Shell

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

Yara detected CobaltStrike

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/6cf0a44011ec1e1a891d7d06357c4687634e42d65a3eecfe9180e608b5d6e150/

ReversingLabs TitaniumCloud Script.Trojan.Wacatac

Threat name:

Script.Trojan.Wacatac

Alert

Create hunting rule

Status:

Malicious

First seen:

2021-03-12 16:46:06 UTC

AV detection:

2 of 47 (4.26%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ntykiqar5qpbvci5puddk7cgq5ru4qwwli7oz7urqdtarnow4fia._file

Hatching Triage cobaltstrike

Result

Malware family:

cobaltstrike

Alert

Create hunting rule

Score:

  10/10

Tags:

family:cobaltstrike backdoor macro trojan xlm

Link:

https://tria.ge/reports/210312-b6z8btanc6/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Loads dropped DLL

Blocklisted process makes network request

Cobaltstrike

Process spawned unexpected child process

Malware Config

C2 Extraction:

http://onealabamasport.com:443/jquery-3.3.2.slim.min.js
http://onealabamasport.com:443/jquery-3.3.1.min.js

Dropper Extraction:

http://digitaldays.ro/site/brandupi.php

VirusTotal

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

YOROI YOMI Trojan

Threat name:

Trojan

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/6cf0a44011ec1e1a891d7d06357c4687634e42d65a3eecfe9180e608b5d6e150

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.

  

Link

https://tria.ge/210312-7z5wdcrxh6

  

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/123967/

Comments