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 52 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 formbook

Malware family:

formbook

Alert

Create hunting rule

ID:

1

File name:

c5cbf71a454d9e6bd86241ea52be15c3.eml

Verdict:

Malicious activity

Analysis date:

2023-11-09 12:02:01 UTC

Tags:

phishing phishing-pdf phishing-xls opendir exploit cve-2017-11882 loader formbook xloader

Link:

https://app.any.run/tasks/49c1b30a-04e1-434d-9336-716ba94b7349

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):

SecuriteInfo.com.Other.Malware-gen.12790.22077.UNOFFICIAL

Alert

Create hunting rule

SecuriteInfo.com.Other.Malware-gen.19728.9505.UNOFFICIAL

Alert

Create hunting rule

SecuriteInfo.com.Heur.1282.16692.UNOFFICIAL

Alert

Create hunting rule

SecuriteInfo.com.Other.Malware-gen.25106.3990.UNOFFICIAL

Alert

Create hunting rule

Sanesecurity.Shelter.Malware.BadMacro.BadOleNatEquat.UNOFFICIAL

Alert

Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL

Alert

Create hunting rule

Dr. Web vxCube Malware

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Searching for synchronization primitives

Launching a process

Creating a file in the %AppData% directory

Сreating synchronization primitives

Creating a process with a hidden window

Launching cmd.exe command interpreter

Sending an HTTP GET request

Creating a process from a recently created file

Unauthorized injection to a system process

DocGuard Malicious

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/cd1c9fad93fdc00b3d2b34bb65d84029c5a8529b7eba10b4922b503dca449c74/results/dashboard

Behaviour

BlacklistAPI detected

Document image

Image:

Download PNG

FileScan.IO Malicious

Verdict:

Malicious

Threat level:

  10/10

Confidence:

100%

Tags:

embedequation exploit exploit macros packed shellcode sload

Link:

https://www.filescan.io/uploads/654c7f76641154c7e3efc0e4/reports/c2402600-70ef-483a-ac89-312c183a0851/overview

Hybrid Analysis Unknown

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/cd1c9fad93fdc00b3d2b34bb65d84029c5a8529b7eba10b4922b503dca449c74

inlyse Malware.AI Benign

Label:

Benign

Suspicious Score:

1.6/10

Score Malicious:

17%

Score Benign:

83%

Link:

https://www.malware.ai/gui/files/?id=7d2c2788-d5ea-4b15-9832-edcab380a2cf

InQuest MALICIOUS

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/cd1c9fad93fdc00b3d2b34bb65d84029c5a8529b7eba10b4922b503dca449c74

Joe Sandbox FormBook

Result

Threat name:

FormBook

Alert

Create hunting rule

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1339481

Signature

.NET source code contains potential unpacker

.NET source code contains very large strings

Adds a directory exclusion to Windows Defender

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected FormBook malware

Found malware configuration

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)

Modifies the prolog of user mode functions (user mode inline hooks)

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 equation editor drops PE file

Office equation editor establishes network connection

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Performs DNS queries to domains with low reputation

Powershell uses Background Intelligent Transfer Service (BITS)

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Scheduled temp file as task from temp location

Snort IDS alert for network traffic

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

Tries to detect virtualization through RDTSC time measurements

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

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

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

CERT.PL MWDB cve-2017-11882-shellcode

Detection:

cve-2017-11882-shellcode

Alert

Create hunting rule

Link:

https://mwdb.cert.pl/sample/cd1c9fad93fdc00b3d2b34bb65d84029c5a8529b7eba10b4922b503dca449c74/

ReversingLabs TitaniumCloud Win32.Exploit.CVE-2017-11882

Threat name:

Win32.Exploit.CVE-2017-11882

Alert

Create hunting rule

Status:

Malicious

First seen:

2023-11-09 06:39:45 UTC

File Type:

Document

Extracted files:

111

AV detection:

12 of 36 (33.33%)

Threat level:

  5/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zuoj7lmt7xaawpjlgs5wlwcafhc2quu3p25bbnesfnid3ssetr2a._file

Hatching Triage formbook

Result

Malware family:

formbook

Alert

Create hunting rule

Score:

  10/10

Tags:

family:formbook campaign:bp31 rat spyware stealer trojan

Link:

https://tria.ge/reports/231109-hgxcdsga2z/

Behaviour

Checks processor information in registry

Creates scheduled task(s)

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

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

Enumerates physical storage devices

Drops file in System32 directory

Suspicious use of SetThreadContext

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Formbook payload

Formbook

VMRay FormBook

Malware family:

FormBook

Alert

Create hunting rule

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cd1c9fad93fd/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/cd1c9fad93fdc00b3d2b34bb65d84029c5a8529b7eba10b4922b503dca449c74

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