MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193. 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


Maldoc score: 2


Intelligence 14 IOCs YARA 4 File information Comments
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SHA256 hash: 05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193
SHA3-384 hash: 20576a7805a48000d02c8205782c26874cbc5d91fa6c8340a98cd5198ab10f874337cda7e6d9ab958ffb232f48f0008e
SHA1 hash: 1bdeab2b6857e99af6d67c1038e793710423607a
MD5 hash: 20684d36620f825c2997a99f86fbaf7a
humanhash: cola-butter-social-speaker
File name:Quotation.xls
Download: download sample
Signature Formbook
Create hunting rule
File size:1'300'992 bytes
First seen:2023-11-13 16:43:02 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 24576:8uBSw6/uZyT3bVEw6/WZy43bVHEgTopIPJ0J/uYNEyv05L5adqw1x:n6/4G3bV36/AP3bVHzTBhO/uY3851Py
TLSH T1A855C003E940CB83D41C43F46EE34EE90B16AF14EA965ACF215ABF4F3E706621D5B51A
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:CVE-2017-11882 CVE-2018-0802 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 id
Maldoc score: 2
OLE dump

MalwareBazaar was able to identify 52 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3120200 bytesSummaryInformation
494 bytesMBD001827E4/CompObj
562 bytesMBD001827E4/Ole
620409 bytesMBD001827E4/CONTENTS
794 bytesMBD001827E5/CompObj
862 bytesMBD001827E5/Ole
912169 bytesMBD001827E5/CONTENTS
1094 bytesMBD001827E6/CompObj
1162 bytesMBD001827E6/Ole
127284 bytesMBD001827E6/CONTENTS
1394 bytesMBD001827E7/CompObj
1462 bytesMBD001827E7/Ole
1564830 bytesMBD001827E7/CONTENTS
1693 bytesMBD001827E8/CompObj
1764 bytesMBD001827E8/Ole
18124841 bytesMBD001827E8/CONTENTS
19114 bytesMBD001827E9/CompObj
20708 bytesMBD001827E9/DocumentSummaryInformation
2123248 bytesMBD001827E9/SummaryInformation
2297872 bytesMBD001827E9/Workbook
23418 bytesMBD001827E9/_VBA_PROJECT_CUR/PROJECT
2462 bytesMBD001827E9/_VBA_PROJECT_CUR/PROJECTwm
25977 bytesMBD001827E9/_VBA_PROJECT_CUR/VBA/Sheet1
26985 bytesMBD001827E9/_VBA_PROJECT_CUR/VBA/ThisWorkbook
272329 bytesMBD001827E9/_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
28517 bytesMBD001827E9/_VBA_PROJECT_CUR/VBA/dir
2994 bytesMBD001827EA/CompObj
3062 bytesMBD001827EA/Ole
3164830 bytesMBD001827EA/CONTENTS
3293 bytesMBD001827EB/CompObj
3364 bytesMBD001827EB/Ole
34124841 bytesMBD001827EB/CONTENTS
35114 bytesMBD001827EC/CompObj
36708 bytesMBD001827EC/DocumentSummaryInformation
3723248 bytesMBD001827EC/SummaryInformation
3897808 bytesMBD001827EC/Workbook
390 bytesMBD001827EC/_VBA_PROJECT_CUR/VBA/Sheet1
400 bytesMBD001827EC/_VBA_PROJECT_CUR/VBA/ThisWorkbook
410 bytesMBD001827EC/_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
421630 bytesMBD001827ED/OlE10naTIve
4320 bytesMBD001827ED/Ole
44475913 bytesWorkbook
45525 bytes_VBA_PROJECT_CUR/PROJECT
46104 bytes_VBA_PROJECT_CUR/PROJECTwm
47977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
48977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
49977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
50985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
512644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
52553 bytes_VBA_PROJECT_CUR/VBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
374
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/458369/
Detection(s):
SecuriteInfo.com.Other.Malware-gen.12790.22077.UNOFFICIAL
Create hunting rule

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

SecuriteInfo.com.Heur.1282.16692.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Other.Malware-gen.25106.3990.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadMacro.BadOleNatEquat.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL
Create hunting rule

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
Sending an HTTP GET request
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193/results/dashboard
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit exploit lolbin macros packed remote shellcode sload
Link:
https://www.filescan.io/uploads/65525253886b1623ff3ee029/reports/fb8c3e35-550e-466d-afe9-f3cb85beea7c/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193
Label:
Benign
Suspicious Score:
2.7/10
Score Malicious:
28%
Score Benign:
72%
Link:
https://www.malware.ai/gui/files/?id=66d565f6-5cb8-4278-a98f-26943bd68693
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193
Details
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1341826
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
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 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 netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1341826 Sample: Quotation.xls Startdate: 13/11/2023 Architecture: WINDOWS Score: 100 87 Snort IDS alert for network traffic 2->87 89 Found malware configuration 2->89 91 Malicious sample detected (through community Yara rule) 2->91 93 18 other signatures 2->93 10 EQNEDT32.EXE 12 2->10         started        15 taskeng.exe 2->15         started        17 EQNEDT32.EXE 2->17         started        19 2 other processes 2->19 process3 dnsIp4 85 103.29.3.200, 49162, 80 NINENETWORKS-KHSATURNHOLDINGSLIMITEDKH unknown 10->85 73 C:\Users\user\AppData\Roaming\unsecapp.exe, PE32 10->73 dropped 75 C:\Users\user\AppData\...\wininit[1].exe, PE32 10->75 dropped 123 Office equation editor establishes network connection 10->123 125 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->125 21 unsecapp.exe 5 10->21         started        25 CBdqwn.exe 15->25         started        27 unsecapp.exe 17->27         started        29 RdrCEF.exe 19->29         started        file5 signatures6 process7 file8 65 C:\Users\user\AppData\Roaming\CBdqwn.exe, PE32 21->65 dropped 67 C:\Users\user\AppData\Local\...\tmp3AC0.tmp, XML 21->67 dropped 101 Antivirus detection for dropped file 21->101 103 Machine Learning detection for dropped file 21->103 105 Uses schtasks.exe or at.exe to add and modify task schedules 21->105 31 unsecapp.exe 21->31         started        34 powershell.exe 4 21->34         started        36 schtasks.exe 21->36         started        107 Adds a directory exclusion to Windows Defender 25->107 109 Tries to detect virtualization through RDTSC time measurements 25->109 111 Injects a PE file into a foreign processes 25->111 38 CBdqwn.exe 25->38         started        40 powershell.exe 25->40         started        42 schtasks.exe 25->42         started        44 unsecapp.exe 27->44         started        46 powershell.exe 27->46         started        48 schtasks.exe 27->48         started        signatures9 process10 signatures11 127 Modifies the context of a thread in another process (thread injection) 31->127 129 Maps a DLL or memory area into another process 31->129 131 Sample uses process hollowing technique 31->131 133 Queues an APC in another process (thread injection) 31->133 50 explorer.exe 8 3 31->50 injected 135 Powershell uses Background Intelligent Transfer Service (BITS) 34->135 process12 dnsIp13 79 www.libgeninfo.com 173.239.8.164, 49188, 49189, 49190 WEBAIR-INTERNETUS United States 50->79 81 www.zuwiz.com 91.195.240.123, 49194, 49195, 49196 SEDO-ASDE Germany 50->81 83 17 other IPs or domains 50->83 95 System process connects to network (likely due to code injection or exploit) 50->95 97 Performs DNS queries to domains with low reputation 50->97 99 Uses netsh to modify the Windows network and firewall settings 50->99 54 explorer.exe 50->54         started        58 netsh.exe 50->58         started        60 wlanext.exe 50->60         started        signatures14 process15 file16 69 C:\Users\user\AppData\...69MNlogrv.ini, data 54->69 dropped 71 C:\Users\user\AppData\...71MNlogri.ini, data 54->71 dropped 113 Detected FormBook malware 54->113 115 Tries to steal Mail credentials (via file / registry access) 54->115 117 Tries to harvest and steal browser information (history, passwords, etc) 54->117 121 3 other signatures 54->121 62 firefox.exe 54->62         started        119 Tries to detect virtualization through RDTSC time measurements 58->119 signatures17 process18 file19 77 C:\Users\user\AppData\...77MNlogrf.ini, data 62->77 dropped
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193/
Threat name:
Win32.Exploit.CVE-2018-0802
Create hunting rule
Status:
Malicious
First seen:
2023-11-13 08:08:57 UTC
File Type:
Document
Extracted files:
111
AV detection:
11 of 37 (29.73%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=axok2ukgz3lfhlbxuofmgcen5fkc7qtxhsmuz2y6glohaytbygjq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bp31 rat spyware stealer trojan
Link:
https://tria.ge/reports/231113-t8ahgsdh9s/
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 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
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/05dcad5146ce/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/05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193

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_OLE_EXPLOIT_CVE_2017_11882_1
Create hunting rule
Author:ditekSHen
Description:detects OLE documents potentially exploiting CVE-2017-11882
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:office_document_vba
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/

File information

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

Malspam

Formbook

Excel file xls 05dcad5146ced653ac37a38ac3088de9542fc2773c994ceb1e32dc706261c193

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/458369/

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