MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4266d2a1d05270a41a4959ab0143f13655790c4c9fc189088b46302a367567a. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
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SHA256 hash: c4266d2a1d05270a41a4959ab0143f13655790c4c9fc189088b46302a367567a
SHA3-384 hash: 2bb3cb8a4e73e6d8fc2ed093ceeec69fa223c5b23961e9d6347f4f5620a57c85ee3ce37f4a1f21c6f9aa05c155cbefb7
SHA1 hash: cf13b2aedb7a44209a7d8bbe4694150834fc50e0
MD5 hash: ef04a12bc8c36b451d4b9da3cd9d36d6
humanhash: mockingbird-illinois-tennessee-quebec
File name:Order4500318042.xls
Download: download sample
Signature Formbook
Create hunting rule
File size:235'008 bytes
First seen:2024-05-07 07:39:45 UTC
Last seen:2024-05-07 08:40:08 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:6d4UcLe0JOqPQZR8MDdATCR3tSv0W83l0MUl73/aLKMml:9UP/qPQZR8MxAm/S8W83lObaLK
TLSH T1BF34023FBC74A183C56189BCB41D0092EB7E5ED5BB02B18E067071EE9B731A89D215DE
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 abuse_ch
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 bytesMBD00E88B69/CompObj
5147801 bytesMBD00E88B69/Package
6590 bytesMBD00E88B6A/Ole
780836 bytesWorkbook

Intelligence

File Origin
# of uploads :
2
# of downloads :
328
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Order4500318042.xls
Verdict:
Malicious activity
Analysis date:
2024-05-06 23:17:14 UTC
Tags:
exploit cve-2017-11882 opendir loader formbook xloader
Link:
https://app.any.run/tasks/edb676a2-7921-412d-ab97-1f65032cec33

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection(s):
TwinWave.EvilDoc.93TilInfinity.20240412.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
DNS request
Sending an HTTP GET request
Сreating synchronization primitives
Launching a process
Searching for the browser window
Connection attempt
Sending a custom TCP request
Connection attempt by exploiting the app vulnerability
Sending a custom TCP request 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/c4266d2a1d05270a41a4959ab0143f13655790c4c9fc189088b46302a367567a/results/dashboard
Payload URLs
URL
File name
http://sorty.cc/qpaOb
Embedded Ole
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit language-tr macros shellcode
Link:
https://www.filescan.io/uploads/6639dad911114a9ab5e10007/reports/b60d0a46-9851-4fc1-8d8f-34a53b2b3d73/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/c4266d2a1d05270a41a4959ab0143f13655790c4c9fc189088b46302a367567a
Gathering data
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1436750
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to hide windows to a different desktop
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
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
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Office drops RTF 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: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1436750 Sample: Order4500318042.xls Startdate: 06/05/2024 Architecture: WINDOWS Score: 100 53 sorty.cc 2->53 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for dropped file 2->81 83 17 other signatures 2->83 11 EXCEL.EXE 57 39 2->11         started        signatures3 process4 dnsIp5 59 sorty.cc 104.21.89.249, 443, 49163, 49164 CLOUDFLARENETUS United States 11->59 61 192.3.179.142, 49165, 49172, 49173 AS-COLOCROSSINGUS United States 11->61 51 dayisagooddaytohea...eatforentier[1].doc, Rich 11->51 dropped 15 html.exe 1 7 11->15         started        18 WINWORD.EXE 336 43 11->18         started        file6 process7 dnsIp8 99 Antivirus detection for dropped file 15->99 101 Machine Learning detection for dropped file 15->101 103 Tries to detect virtualization through RDTSC time measurements 15->103 105 Injects a PE file into a foreign processes 15->105 22 html.exe 15->22         started        55 sorty.cc 18->55 57 172.67.166.48, 443, 49166, 49169 CLOUDFLARENETUS United States 18->57 39 C:\Users\user\AppData\...\sorty.cc.url, MS 18->39 dropped 41 C:\Users\user\AppData\Roaming\...\qpaOb.url, MS 18->41 dropped 43 ~WRF{19C9DBBB-1FB2...6-1F1327F32D43}.tmp, Composite 18->43 dropped 45 C:\Users\user\AppData\Local\...\72A34F7.doc, Rich 18->45 dropped 107 Microsoft Office launches external ms-search protocol handler (WebDAV) 18->107 109 Office viewer loads remote template 18->109 111 Microsoft Office drops suspicious files 18->111 25 EQNEDT32.EXE 12 18->25         started        file9 signatures10 process11 file12 85 Modifies the context of a thread in another process (thread injection) 22->85 87 Maps a DLL or memory area into another process 22->87 89 Sample uses process hollowing technique 22->89 91 Queues an APC in another process (thread injection) 22->91 28 explorer.exe 4 3 22->28 injected 47 C:\Users\user\AppData\Roaming\html.exe, PE32 25->47 dropped 49 C:\Users\user\AppData\Local\...\html[1].exe, PE32 25->49 dropped 93 Office equation editor establishes network connection 25->93 95 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 25->95 signatures13 process14 dnsIp15 63 www.sydneyridesfestival.net 28->63 65 www.sleepbetter.health 28->65 67 3 other IPs or domains 28->67 97 System process connects to network (likely due to code injection or exploit) 28->97 32 wininit.exe 28->32         started        35 autochk.exe 28->35         started        signatures16 process17 signatures18 69 Modifies the context of a thread in another process (thread injection) 32->69 71 Contains functionality to hide windows to a different desktop 32->71 73 Maps a DLL or memory area into another process 32->73 75 Tries to detect virtualization through RDTSC time measurements 32->75 37 cmd.exe 32->37         started        process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c4266d2a1d05270a41a4959ab0143f13655790c4c9fc189088b46302a367567a/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-05-06 02:16:43 UTC
File Type:
Document
Extracted files:
28
AV detection:
7 of 38 (18.42%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqtg2kq5autquqneswnlafb7cnsvpegezh6breeiwrrqfi3hkz5a._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ht3d rat spyware stealer trojan
Link:
https://tria.ge/reports/240507-jhjncsaa76/
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 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
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
Formbook payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.

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:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)

File information

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

Comments