MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623
SHA3-384 hash: ed482aabf2ea873aacbeb3a3fd6ec110f19004a7e68e52ebb618647d815e367dad78c9e8bb84d78db872819e3b230d1b
SHA1 hash: eb64df19874aab134ec75baf72f8b619a7821f43
MD5 hash: a1e360b030e9fde0d4b008baa218367c
humanhash: blue-batman-illinois-four
File name:Quotation package RFQ 10750.xls
Download: download sample
Signature Formbook
Create hunting rule
File size:391'168 bytes
First seen:2023-11-27 14:09:32 UTC
Last seen:2023-12-04 08:55:48 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:7n1m9kdb2PpeZDKy4ij4a3DjKcUXzUlBJIgHDGgyxydSXIXV1oYYvYvlDsJaewbS:7Oe0GKjij4a3DjMzUvJIgUA/V1oYYwN6
TLSH T1EB84123BF096CB2BDD5BA070CC1AB0DAE6758C9DDB01934E62C9739301327A28537E95
TrID 58.2% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
33.5% (.XLS) Microsoft Excel sheet (32500/1/3)
8.2% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter notajungman
Tags:FormBook xls

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 dump

MalwareBazaar was able to identify 7 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
499 bytesMBD00015571/CompObj
5200806 bytesMBD00015571/Package
61000 bytesMBD00015572/Ole
7182137 bytesWorkbook

Intelligence

File Origin
# of uploads :
2
# of downloads :
328
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/460684/
Detection(s):
TwinWave.EvilDoc.FormbookPicturesOfU.XL.220411.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.GenericKD.64927369.3758.6623.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.BadUsr1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.VBA.Agent-16.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Other.Malware-gen.19728.9505.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.badForm1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.FormbookPicturesOfU.MSOLE2.220411.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a file
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623/results/dashboard
Payload URLs
URL
File name
http://172.245.208.19/www/MicrosoftbrowserEdgeentierhistorycachedeletedsuccessfully.Doc
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit macros shellcode sload
Link:
https://www.filescan.io/uploads/6564a33fbcca970107cef7a9/reports/5072de5c-e67b-45c5-9d12-cb322ae3bff7/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623
Label:
Benign
Suspicious Score:
1.7/10
Score Malicious:
17%
Score Benign:
83%
Link:
https://www.malware.ai/gui/files/?id=56f77eaa-3044-4a6e-bbf0-3d2303130aa5
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1348588
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for dropped file
Antivirus detection for URL or domain
DLL side loading technique detected
Document embeds suspicious OLE2 link
Excel sheet contains many unusual embedded objects
Injects a PE file into a foreign processes
Injects files into Windows application
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Multi AV Scanner detection for dropped file
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)
Office viewer loads remote template
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
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1348588 Sample: Quotation_package_RFQ_10750.xls Startdate: 27/11/2023 Architecture: WINDOWS Score: 100 74 Snort IDS alert for network traffic 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Antivirus detection for URL or domain 2->78 80 12 other signatures 2->80 10 EQNEDT32.EXE 12 2->10         started        14 WINWORD.EXE 345 47 2->14         started        16 EXCEL.EXE 59 55 2->16         started        19 AcroRd32.exe 21 2->19         started        process3 dnsIp4 40 C:\Users\user\AppData\Roaming\wlanext.exe, PE32 10->40 dropped 42 C:\Users\user\AppData\...\wlanext[1].exe, PE32 10->42 dropped 88 Office equation editor establishes network connection 10->88 90 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->90 21 wlanext.exe 1 7 10->21         started        44 C:\Users\user\...\www on 172.245.208.19.url, MS 14->44 dropped 46 MicrosoftbrowserEd...uccessfully.Doc.url, MS 14->46 dropped 48 ~WRF{E3ACBDFC-EC83...3-CDF274E5492C}.tmp, Composite 14->48 dropped 50 C:\Users\user\AppData\Local\...\2B641A4A.doc, ISO-8859 14->50 dropped 92 Microsoft Office launches external ms-search protocol handler (WebDAV) 14->92 94 Office viewer loads remote template 14->94 96 Microsoft Office drops suspicious files 14->96 56 172.245.208.19, 49162, 49163, 49164 AS-COLOCROSSINGUS United States 16->56 52 MicrosoftbrowserEd...successfully[1].doc, ISO-8859 16->52 dropped 98 Injects files into Windows application 16->98 file5 signatures6 process7 signatures8 82 Multi AV Scanner detection for dropped file 21->82 84 Injects a PE file into a foreign processes 21->84 24 wlanext.exe 21->24         started        process9 signatures10 86 Maps a DLL or memory area into another process 24->86 27 WErirOIGWWGDmZrEyBEGoye.exe 24->27 injected process11 signatures12 100 Maps a DLL or memory area into another process 27->100 30 where.exe 1 20 27->30         started        process13 dnsIp14 64 www.sqlite.org 45.33.6.223, 49171, 80 LINODE-APLinodeLLCUS United States 30->64 54 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 30->54 dropped 66 Tries to steal Mail credentials (via file / registry access) 30->66 68 Tries to harvest and steal browser information (history, passwords, etc) 30->68 70 Maps a DLL or memory area into another process 30->70 72 3 other signatures 30->72 35 WErirOIGWWGDmZrEyBEGoye.exe 30->35 injected 38 firefox.exe 30->38         started        file15 signatures16 process17 dnsIp18 58 www.54c7pv.top 154.91.180.241, 49200, 49201, 49202 VPSQUANUS Seychelles 35->58 60 www.zz23xw.top 198.44.187.121, 49172, 49173, 49174 VPSQUANUS United States 35->60 62 19 other IPs or domains 35->62
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2023-11-27 09:55:34 UTC
File Type:
Document
Extracted files:
75
AV detection:
8 of 37 (21.62%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jvphgkgjeg5qharq2hs36ge4v4hiok24pddktcyfkjvd3b3oqyrq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/231127-rgprzsha34/
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 AdjustPrivilegeToken
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
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Abuses OpenXML format to download file from external location
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/4d5e7328c921/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/4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623

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:Borland
Create hunting rule
Author:malware-lu
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:SEH__vba
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Malspam

Formbook

Excel file xls 4d5e7328c921bb038230d1e5bf189caf0e872b5c78c6a98b05526a3d876e8623

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/460684/

Comments