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 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_195.xls

Verdict:

Malicious activity

Analysis date:

2021-03-15 16:56:20 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/9623adc5-c83e-4aa0-8016-68e9717d47a6

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.sheet.macroEnabled.12

Has a screenshot:

False

Contains macros:

True

ClamAV Detected

Detection(s):

SecuriteInfo.com.Trojan.Win32.Macro40.11000280.5428.14670.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

Changing a file

Sending a custom TCP request

Sending an HTTP GET request

Launching a process by exploiting the app vulnerability

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

OOXML Excel File with Excel4Macro

Link:

https://app.docguard.net/54094b2385ea86406ad20d865e6c03ec6233187e293d3d982d281d0237b552dc/results/dashboard

Payload URLs

URL

File name

http://www.ceder-invest.be/sass/capital.php

sharedStrings.xml

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Details

Macro Execution Coercion

Detected a document that appears to social engineer the user into activating embedded logic.

Autostarting Excel Macro Sheet

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

Document With No Content

Document contains little or no semantic information.

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/639768

Signature

C2 URLs / IPs found in malware configuration

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

Found malicious Excel 4.0 Macro

Found malware configuration

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/54094b2385ea86406ad20d865e6c03ec6233187e293d3d982d281d0237b552dc/

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/210315-ch193f8knj/

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

Dropper Extraction:

http://www.ceder-invest.be/sass/capital.php

VirusTotal

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

YOROI YOMI CobaltStrike

Threat name:

CobaltStrike

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/54094b2385ea86406ad20d865e6c03ec6233187e293d3d982d281d0237b552dc

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