MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783
SHA3-384 hash: d9c26302a1d9688ed44d744c0d46bfd94f01ee9e1d2239c84c0f2fa5c0be090d9a5dff87cf9c39780a20f5e1741afad7
SHA1 hash: b5d819e1c5b432f4166d6a5a90499d5f1a32dd3e
MD5 hash: c4c7a71468bec6ac56c353767818203c
humanhash: whiskey-maine-johnny-louisiana
File name:EMPLOYEE-FINAL-SETTLEMENTS.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:367'471 bytes
First seen:2024-05-02 05:22:08 UTC
Last seen:2024-05-02 06:26:26 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:VwAYwAYwAYwAYwAYwAYwAYwAYwAYwAkA8aQj:R
TLSH T1EA74BE2DD34B02598F620377AB571E5142BDBA7EF38452B1302C537933EAD39A1252BE
Reporter abuse_ch
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
424
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783.doc
Verdict:
Suspicious activity
Analysis date:
2024-05-02 05:24:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/57dec947-6935-4399-8aa6-5b25bd16cd70

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

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
Connection attempt to an infection source by exploiting the app vulnerability
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Launching a service
Query of malicious DNS domain
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 TCP request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66332339fe18f197f0ca9fdd/reports/5c0bc895-2e55-41f1-8c14-d61d71878ecc/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783
Gathering data
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1435129
Signature
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Drops PE files with a suspicious file extension
Found direct / indirect Syscall (likely to bypass EDR)
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
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)
Sigma detected: Equation Editor Network Connection
Sigma detected: Suspicious Microsoft Office Child Process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1435129 Sample: EMPLOYEE-FINAL-SETTLEMENTS.doc Startdate: 02/05/2024 Architecture: WINDOWS Score: 100 59 Multi AV Scanner detection for domain / URL 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Antivirus detection for URL or domain 2->63 65 12 other signatures 2->65 11 WINWORD.EXE 336 14 2->11         started        process3 process4 13 EQNEDT32.EXE 11 11->13         started        18 EQNEDT32.EXE 11->18         started        dnsIp5 49 dukeenergyltd.top 104.21.25.202, 443, 49163 CLOUDFLARENETUS United States 13->49 37 C:\Users\user\AppData\Roaming\tee63536.scr, PE32 13->37 dropped 39 C:\Users\user\AppData\Local\...\tee[1].scr, PE32 13->39 dropped 77 Installs new ROOT certificates 13->77 79 Office equation editor establishes network connection 13->79 81 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 13->81 20 tee63536.scr 2 13->20         started        file6 signatures7 process8 signatures9 67 Machine Learning detection for dropped file 20->67 69 Injects a PE file into a foreign processes 20->69 23 tee63536.scr 20->23         started        process10 signatures11 71 Maps a DLL or memory area into another process 23->71 26 mRtSKOeTbYsjgRhQdCZdZ.exe 23->26 injected process12 dnsIp13 43 www.quantummquest.top 203.161.50.127, 49182, 49183, 49184 VNPT-AS-VNVNPTCorpVN Malaysia 26->43 45 www.whirledairlines.com 216.40.34.41, 49178, 49179, 49180 TUCOWSCA Canada 26->45 47 6 other IPs or domains 26->47 73 Maps a DLL or memory area into another process 26->73 75 Found direct / indirect Syscall (likely to bypass EDR) 26->75 30 netsh.exe 1 20 26->30         started        signatures14 process15 dnsIp16 51 www.sqlite.org 45.33.6.223, 49165, 80 LINODE-APLinodeLLCUS United States 30->51 41 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 30->41 dropped 53 Tries to steal Mail credentials (via file / registry access) 30->53 55 Tries to harvest and steal browser information (history, passwords, etc) 30->55 57 Maps a DLL or memory area into another process 30->57 35 firefox.exe 30->35         started        file17 signatures18 process19
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-05-02 03:16:16 UTC
File Type:
Document
Extracted files:
4
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7zgfuqycyx2wuhysc4sn42s4k7vblfrmg3ozqxid7v6go5jzk6bq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240502-f25hdshh5v/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
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:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fe4c5a4302c5/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/fe4c5a4302c5f56a1f121724de6a5c57ea15962c36dd985d03fd7c6775395783

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments