MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c. 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


Maldoc score: 25


Intelligence 12 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c
SHA3-384 hash: fd711ffbfbbb85e4a58bbedcfd8ad4a3f1e838adfaa13481ed36f864b6abfb437a9c2ba830691ab3738841bf175b6323
SHA1 hash: 0538c187474e653f877fe6cb92cd0e4e6cf00ec6
MD5 hash: 49fbdfeeae6102f667899001e34cc40a
humanhash: blossom-arizona-carpet-utah
File name:Erzsébet - árajánlat kérése.xlsm
Download: download sample
Signature Formbook
Create hunting rule
File size:58'556 bytes
First seen:2024-05-17 07:19:52 UTC
Last seen:2024-05-17 08:22:41 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:OwCabiKWDDSlECVV/rm8h+DVxVevyhc3W74:O8flECjzm8hBvwc3M4
TLSH T18F43F20CD211ED19C0DC283A9F4B57067039C4A8D376B5E71AABCB1DBAA23471E9F1B5
TrID 50.4% (.XLSM) Excel Microsoft Office Open XML Format document (with Macro) (57500/1/12)
29.8% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7)
15.3% (.ZIP) Open Packaging Conventions container (17500/1/4)
3.5% (.ZIP) ZIP compressed archive (4000/1)
0.8% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter smica83
Tags:FormBook HUN xlsm

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: 25
OLE dump

MalwareBazaar was able to identify 11 sections in this file using oledump:

Section IDSection sizeSection name
A1485 bytesPROJECT
A262 bytesPROJECTwm
A31151 bytesVBA/Sheet1
A4395541 bytesVBA/ThisWorkbook
A56348 bytesVBA/_VBA_PROJECT
A62550 bytesVBA/__SRP_0
A7182 bytesVBA/__SRP_1
A84100 bytesVBA/__SRP_2
A9206 bytesVBA/__SRP_3
A10516 bytesVBA/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
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousEnvironMay read system environment variables
SuspiciousOpenMay open a file
SuspiciousWriteMay write to a file (if combined with Open)
SuspiciousADODB.StreamMay create a text file
SuspiciousSaveToFileMay create a text file
SuspiciousShellMay run an executable file or a system command
SuspiciousvbNormalFocusMay run an executable file or a system command
SuspiciouscommandMay run PowerShell commands
SuspiciousCreateObjectMay create an OLE object
SuspiciousMSXML2.XMLHTTPMay download files from the Internet
SuspiciousChrWMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
2
# of downloads :
2'810
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c.xlsm
Verdict:
Malicious activity
Analysis date:
2024-05-17 07:22:39 UTC
Tags:
macros macros-on-open
Link:
https://app.any.run/tasks/152e617b-5f64-48f7-929a-52cae2eb6c33

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
MiscreantPunch.EvilMacro.ObfPSDL.161109.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD..EXE.200225.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.HTTPS
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD..EXE.211019.UNOFFICIAL
Create hunting rule

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

MiscreantPunch.PSHELLCHRFEQCNTEXE.170818.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
DNS request
Creating a window
Creating a file
Launching cmd.exe command interpreter
Сreating synchronization primitives
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Labled as:
Msoffice/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c
Gathering data
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
Mr. Un1k0d3r MaliciousMacroGenerator
Possible usage of MaliciousMacroGenerator.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
expl.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1443155
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Found malware configuration
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Multi AV Scanner detection for dropped file
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 process drops PE file
Office process queries suspicious COM object (likely to drop second stage)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: File With Uncommon Extension Created By An Office Application
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: Suspicious Script Execution From Temp Folder
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1443155 Sample: Erzs#U00e9bet - #U00e1raj#U... Startdate: 17/05/2024 Architecture: WINDOWS Score: 100 50 www.thecoxnews.com 2->50 52 www.sukhiclothing.com 2->52 54 17 other IPs or domains 2->54 66 Snort IDS alert for network traffic 2->66 68 Found malware configuration 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 22 other signatures 2->72 12 EXCEL.EXE 143 60 2->12         started        17 EXCEL.EXE 2->17         started        signatures3 process4 dnsIp5 56 mbsngradnja.com 77.105.36.123, 443, 49733 ORIONTELEKOM-ASRS Serbia 12->56 58 part-0015.t-0009.t-msedge.net 13.107.246.43, 443, 53788, 53789 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 12->58 46 C:\Users\user\AppData\Local\Temp\pp.exe, PE32 12->46 dropped 48 C:\Users\user\AppData\...\application[1].exe, PE32 12->48 dropped 96 Document exploit detected (creates forbidden files) 12->96 98 Office process queries suspicious COM object (likely to drop second stage) 12->98 19 pp.exe 4 12->19         started        22 splwow64.exe 12->22         started        file6 signatures7 process8 signatures9 74 Multi AV Scanner detection for dropped file 19->74 76 Machine Learning detection for dropped file 19->76 78 Adds a directory exclusion to Windows Defender 19->78 80 Tries to detect virtualization through RDTSC time measurements 19->80 24 pp.exe 19->24         started        27 powershell.exe 23 19->27         started        process10 signatures11 86 Modifies the context of a thread in another process (thread injection) 24->86 88 Maps a DLL or memory area into another process 24->88 90 Sample uses process hollowing technique 24->90 92 Queues an APC in another process (thread injection) 24->92 29 explorer.exe 1 1 24->29 injected 94 Loading BitLocker PowerShell Module 27->94 33 conhost.exe 27->33         started        35 WmiPrvSE.exe 27->35         started        process12 dnsIp13 60 www.52cg2.club 103.224.212.214, 53798, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 29->60 62 parkingpage.namecheap.com 91.195.240.19, 53800, 80 SEDO-ASDE Germany 29->62 64 5 other IPs or domains 29->64 100 System process connects to network (likely due to code injection or exploit) 29->100 37 msiexec.exe 29->37         started        40 autochk.exe 29->40         started        signatures14 process15 signatures16 82 Modifies the context of a thread in another process (thread injection) 37->82 84 Maps a DLL or memory area into another process 37->84 42 cmd.exe 37->42         started        process17 process18 44 conhost.exe 42->44         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c/
Threat name:
Document-Word.Downloader.Powdow
Create hunting rule
Status:
Malicious
First seen:
2024-05-16 07:17:29 UTC
File Type:
Document
Extracted files:
25
AV detection:
15 of 37 (40.54%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qc6esh2tcq7qlbtvgbto76erfm2wewfp4rb7luhxj343gzydejoa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:dn03 execution macro rat spyware stealer trojan
Link:
https://tria.ge/reports/240517-h53t3sfb6y/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Formbook payload
Formbook
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/80bc491f5314/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/80bc491f53143f0586753066eff8912b356258afe443f5d0f74ef9b36703225c

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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: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:office_document_vba
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/
Rule name:vbaproject_bin
Create hunting rule
Author:CD_R0M_
Description:{76 62 61 50 72 6f 6a 65 63 74 2e 62 69 6e} is hex for vbaproject.bin. Macros are often used by threat actors. Work in progress - Ran out of time

File information

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

Comments