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 11 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:

faddb41690e2a06a400248d03aebc186f54cc62f522e54c21e482d7bd165c720.xls

Verdict:

Malicious activity

Analysis date:

2020-12-21 09:42:58 UTC

Tags:

macros macros40 formbook trojan stealer

Link:

https://app.any.run/tasks/5f67c1f6-db11-45c5-a2a3-1b799756b310

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.openxmlformats-officedocument.spreadsheetml.sheet

Has a screenshot:

False

Contains macros:

True

ClamAV Detected

Detection(s):

SecuriteInfo.com.Heur.16160.26396.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.NEW-OBJECT.201125.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.SUPExcel4MacroVines.20201208.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.NEW-OBJECT.201208.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file

Replacing files

Creating a process with a hidden window

DNS request

Sending a custom TCP request

Deleting of the original file

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/faddb41690e2a06a400248d03aebc186f54cc62f522e54c21e482d7bd165c720/results/dashboard

Document image

Image:

Download PNG

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Details

Excel 4.0 Macro

Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.

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.

Joe Sandbox Hidden Macro 4.0 FormBook

Result

Threat name:

Hidden Macro 4.0 FormBook

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/567331

Signature

.NET source code contains very large strings

Bypasses PowerShell execution policy

Connects to a URL shortener service

Document exploit detected (process start blacklist hit)

Drops PE files to the document folder of the user

Found Excel 4.0 Macro with suspicious formulas

Found obfuscated Excel 4.0 Macro

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Modifies the context of a thread in another process (thread injection)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Obfuscated command line found

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

Powershell drops PE file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Microsoft Office Product Spawning Windows Shell

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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

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

Tries to detect virtualization through RDTSC time measurements

Yara detected AntiVM_3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/faddb41690e2a06a400248d03aebc186f54cc62f522e54c21e482d7bd165c720/

ReversingLabs TitaniumCloud Document-Office.Downloader.EncDoc

Threat name:

Document-Office.Downloader.EncDoc

Alert

Create hunting rule

Status:

Malicious

First seen:

2020-12-21 08:11:06 UTC

AV detection:

16 of 29 (55.17%)

Threat level:

  3/5

Spamhaus Hash Blocklist Malicious file

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=7lo3ifuq4kqguqacjdidv26bq32uzrrpkixfjqq6jawxxulfy4qa._file

Hatching Triage xloader

Result

Malware family:

xloader

Alert

Create hunting rule

Score:

  10/10

Tags:

family:formbook family:xloader loader macro rat spyware stealer trojan

Link:

https://tria.ge/reports/201221-y1ebrcnmga/

Behaviour

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious behavior: RenamesItself

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Office loads VBA resources, possible macro or embedded object present

Suspicious use of SetThreadContext

Deletes itself

Loads dropped DLL

Blocklisted process makes network request

Executes dropped EXE

Xloader Payload

Formbook

Process spawned unexpected child process

Xloader

Malware Config

C2 Extraction:

http://www.mentorlawgroup.com/p2he/

Dropper Extraction:

https://tinyurl.com/y9z6zzxj

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/faddb41690e2a06a400248d03aebc186f54cc62f522e54c21e482d7bd165c720

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