MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

Formbook

Vendor detections: 14

Intelligence 14 IOCs YARA 1 File information Comments

SHA256 hash:	35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929
SHA3-384 hash:	d2f17e898d9a800440e62602d8f70873f9a1502e2b6cd02d539206d886a5bc205dda8cd058156a333a3790b26c703c80
SHA1 hash:	2bd27c050da6e0741192748554bb4f5f3f7afa34
MD5 hash:	e04274edaef1c789f6748fd0b16b1d44
humanhash:	speaker-table-march-south
File name:	SecuriteInfo.com.Exploit.CVE-2018-0798.4.26491.25474
Download:	download sample
Signature	Formbook Create hunting rule
File size:	722'982 bytes
First seen:	2024-07-17 14:38:50 UTC
Last seen:	2024-07-17 15:41:28 UTC
File type:	rtf
MIME type:	text/rtf
ssdeep	6144:R62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62w:zI
TLSH	T1DDF4072DD34B02598F620377AB571E5142BDBA7EF38552B1302C537933EAC39A1252BE
Reporter	SecuriteInfoCom
Tags:	CVE-2017-11882 rtf

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

SecuriteInfo.com.Exploit.CVE-2018-0798.4.26491.25474.rtf

Verdict:

No threats detected

Analysis date:

2024-07-17 15:46:53 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/bcac2c84-23a5-4663-b501-238e0b4afbc2

Note:

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

Verdict:

Legit

File type:

application/rtf

Has a screenshot:

False

Contains macros:

False

Detection(s):

Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL

SecuriteInfo.com.Exploit.CVE-2018-0798.4.26491.25474.UNOFFICIAL

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6697d788da4062e29ae8a9f3

Tags:

Exploit Generic Network Office Obfuscated

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Searching for synchronization primitives

Launching a process

Using the Windows Management Instrumentation requests

Creating a window

DNS request

Creating a file in the %AppData% directory

Сreating synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Creating a file

Launching a service

Connection attempt by exploiting the app vulnerability

Launching a file downloaded from the Internet

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Sending a custom TCP request by exploiting the app vulnerability

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

RTF File

Link:

https://app.docguard.net/35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

lolbin packed shell32

Link:

https://www.filescan.io/uploads/6697d78bc01cae9c7255fd5b/reports/d221a825-bdcc-43e2-9425-b4d0f77dcd16/overview

Verdict:

Malicious

Labled as:

CVE-2018-0798

Link:

https://www.hybrid-analysis.com/sample/35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929

Result

Verdict:

MALICIOUS

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1475145

Signature

.NET source code references suspicious native API functions

Document exploit detected (process start blacklist hit)

Drops PE files with a suspicious file extension

Injects a PE file into a foreign processes

Installs new ROOT certificates

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

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)

Sigma detected: Equation Editor Network Connection

Sigma detected: Suspicious Microsoft Office Child Process

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929

Detection:

cve-2017-11882-shellcode

Link:

https://mwdb.cert.pl/sample/35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929/

Threat name:

Document-RTF.Exploit.CVE-2017-11882

Status:

Malicious

First seen:

2024-07-17 14:39:05 UTC

File Type:

Document

Extracted files:

AV detection:

15 of 24 (62.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=gwvastxv4mlqrne5keukwwt4aw64ogxuhxlal6iubvy4hfssreuq._file

Result

Malware family:

n/a

Score:

10/10

Tags:

n/a

Link:

https://tria.ge/reports/240717-rz96msybpe/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

Suspicious use of SetThreadContext

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Process spawned unexpected child process

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/d902d22e-26d4-45c2-9840-855f3a9286e5

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/35aa094ef5e3/report/overview.html

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/35aa094ef5e31708b49d5128ab5a7c05bdc71af43dd605f9140d71c396528929

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.

Rule name:	SUSP_INDICATOR_RTF_MalVer_Objects Create hunting rule
Author:	ditekSHen
Description:	Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:	https://github.com/ditekshen/detection