MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898
SHA3-384 hash: fefa10e3bdd3e15713302c7a8d48e63b29b14fa53088a843caca0d4458355a32222feba4fb666e1b12da79a5a8aa2291
SHA1 hash: 31fb4864f3bb77380333047505533c5cd94ddd34
MD5 hash: b8016423ccc0a61606e65c1afb16c6d8
humanhash: seven-uranus-chicken-victor
File name:PAYROLL.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:377'215 bytes
First seen:2024-05-03 09:27:23 UTC
Last seen:2024-05-03 10:25:00 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:awAYwAYwAYwAYwAYwAYwAYwAYwAYwA+fim0AI:+u
TLSH T19884AD2DD34B02598F620277AB571E5142BDBB7EF38552B1302C537933EA83DA1252BE
Reporter abuse_ch
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
372
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898.doc
Verdict:
Suspicious activity
Analysis date:
2024-05-03 09:35:40 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7741c52e-42f8-4193-b60b-d7731aa11cc4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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/5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6634ae25de9c2e31030a1538/reports/8586a453-d930-44bb-a9c1-25ab98424422/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898
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/1435896
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)
Queues an APC in another process (thread injection)
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)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1435896 Sample: PAYROLL.doc Startdate: 03/05/2024 Architecture: WINDOWS Score: 100 56 Multi AV Scanner detection for domain / URL 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for URL or domain 2->60 62 11 other signatures 2->62 11 WINWORD.EXE 336 14 2->11         started        process3 process4 13 EQNEDT32.EXE 11 11->13         started        18 EQNEDT32.EXE 11->18         started        dnsIp5 52 dukeenergyltd.top 172.67.134.136, 443, 49161 CLOUDFLARENETUS United States 13->52 40 C:\Users\user\AppData\...\peace00000.scr, PE32 13->40 dropped 42 C:\Users\user\AppData\Local\...\pfbin[1].scr, PE32 13->42 dropped 76 Installs new ROOT certificates 13->76 78 Office equation editor establishes network connection 13->78 80 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 13->80 20 peace00000.scr 2 13->20         started        file6 signatures7 process8 signatures9 66 Machine Learning detection for dropped file 20->66 68 Injects a PE file into a foreign processes 20->68 23 peace00000.scr 20->23         started        process10 signatures11 70 Maps a DLL or memory area into another process 23->70 26 ULxWkikUchwgASzPTWhdcYRtQBGoJH.exe 23->26 injected process12 signatures13 72 Maps a DLL or memory area into another process 26->72 74 Found direct / indirect Syscall (likely to bypass EDR) 26->74 29 TapiUnattend.exe 1 20 26->29         started        process14 dnsIp15 54 www.sqlite.org 45.33.6.223, 49163, 80 LINODE-APLinodeLLCUS United States 29->54 44 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 29->44 dropped 82 Tries to steal Mail credentials (via file / registry access) 29->82 84 Tries to harvest and steal browser information (history, passwords, etc) 29->84 86 Maps a DLL or memory area into another process 29->86 88 Queues an APC in another process (thread injection) 29->88 34 ULxWkikUchwgASzPTWhdcYRtQBGoJH.exe 29->34 injected 38 firefox.exe 29->38         started        file16 signatures17 process18 dnsIp19 46 sweetbeespoly.store 202.92.7.88, 49162, 80 VNPT-AS-VNVNPTCorpVN Viet Nam 34->46 48 www.evolveenterprises.top 203.161.50.127, 49176, 49177, 49178 VNPT-AS-VNVNPTCorpVN Malaysia 34->48 50 17 other IPs or domains 34->50 64 Found direct / indirect Syscall (likely to bypass EDR) 34->64 signatures20
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-05-03 00:38:08 UTC
File Type:
Document
Extracted files:
3
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kkmjejyencjegrrkl2gpmesz5pajfglfd47fr4oiexobbdpbhcma._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240503-lfbk3sbf4w/
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/529892270468/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/5298922704689243462a5e8cf61259ebc09299651f3e58f1c825dc108de13898

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

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