MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff
SHA3-384 hash: 0c9e63815c617a08a2bbb43292e19181a54215868ceaa119620885a72d88d4bb0ee2b35adc8701d83d0e08958a70b423
SHA1 hash: d2caa4b7b5c64559d7d506bd6bec191c92c4f592
MD5 hash: 16e108820a6288c25887dbc7f7dff60a
humanhash: vegan-stream-snake-twenty
File name:16e108820a6288c25887dbc7f7dff60a.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:106'133 bytes
First seen:2024-09-22 14:25:48 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:mPBpdc1uLnkZiFn+oLRzbbIFAFDlZQCHnTyffPDhg:mPndHnai3lb0iFZTy/De
TLSH T1F0A3AC9DE38F41A5CF5067B3521A4E8845FCB73AB20915B274AC933137ED83E41AA5BC
Magika rtf
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
109
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
16e108820a6288c25887dbc7f7dff60a.rtf
Verdict:
No threats detected
Analysis date:
2024-09-22 14:37:36 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8137ddee-39b7-4364-941a-b212b05395a5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29030.RtfHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

TwinWave.EvilRTF.ObfusRunAway.20240409.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f029055346c7b922acdd71
Tags:
Exploit Generic Network Office Trojan Obfsobjdat Monitor Emotet Expl
Result
Verdict:
Malware
Maliciousness:
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66f02904d2758b8668bb3992/reports/b428286f-2942-4866-a0de-727f6f2f8db4/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1515374
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Found direct / indirect Syscall (likely to bypass EDR)
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 dropped file
Multi AV Scanner detection for submitted 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)
Queues an APC in another process (thread injection)
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
Sigma detected: System File Execution Location Anomaly
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1515374 Sample: FvYlbhvZrZ.rtf Startdate: 22/09/2024 Architecture: WINDOWS Score: 100 56 Multi AV Scanner detection for domain / URL 2->56 58 Suricata IDS alerts for network traffic 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 15 other signatures 2->62 11 WINWORD.EXE 291 13 2->11         started        process3 process4 13 EQNEDT32.EXE 12 11->13         started        18 EQNEDT32.EXE 11->18         started        dnsIp5 52 104.243.38.54, 49161, 80 RELIABLESITEUS United States 13->52 40 C:\Users\user\AppData\Roaming\audiodg.exe, PE32 13->40 dropped 42 C:\Users\user\AppData\...\audiodg[1].exe, PE32 13->42 dropped 80 Office equation editor establishes network connection 13->80 82 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 13->82 20 audiodg.exe 1 13->20         started        file6 signatures7 process8 signatures9 66 Multi AV Scanner detection for dropped file 20->66 68 Machine Learning detection for dropped file 20->68 70 Writes to foreign memory regions 20->70 72 2 other signatures 20->72 23 svchost.exe 20->23         started        process10 signatures11 74 Maps a DLL or memory area into another process 23->74 26 trdptRcVTXZKaytnPR.exe 23->26 injected process12 signatures13 76 Maps a DLL or memory area into another process 26->76 78 Found direct / indirect Syscall (likely to bypass EDR) 26->78 29 netbtugc.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 84 Tries to steal Mail credentials (via file / registry access) 29->84 86 Tries to harvest and steal browser information (history, passwords, etc) 29->86 88 Maps a DLL or memory area into another process 29->88 90 Queues an APC in another process (thread injection) 29->90 34 trdptRcVTXZKaytnPR.exe 29->34 injected 38 firefox.exe 29->38         started        file16 signatures17 process18 dnsIp19 46 www.3xfootball.com 154.215.72.110, 49162, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 34->46 48 www.goldenjade-travel.com 116.50.37.244, 49164, 49165, 49166 DONGFONG-TWDongFongTechnologyCoLtdTW Taiwan; Republic of China (ROC) 34->48 50 5 other IPs or domains 34->50 64 Found direct / indirect Syscall (likely to bypass EDR) 34->64 signatures20
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-09-20 15:13:25 UTC
File Type:
Document
Extracted files:
5
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sngvvgwa7kpvdde6w3nubfiwngkhius4ahb3uxnir6bzeul6ax7q._file
Verdict:
malicious
Label(s):
admintool_powerrun
Create hunting rule
Result
Malware family:
n/a
Score:
  10/10
Tags:
credential_access discovery stealer
Link:
https://tria.ge/reports/240922-rrvqzstfkc/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
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
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
AutoIT Executable
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
Process spawned unexpected child process
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b01f59db-034c-4dd9-87c3-19e3e6ad7551
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/934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff

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: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.

Web download

Formbook

Rich Text Format (RTF) rtf 934d5a9ac0fa9f518c9eb6db409516699474525c01c3ba5da88f8392517e05ff

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3184844/
  
Delivery method
Distributed via web download

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