MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca. 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 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca
SHA3-384 hash: 7d24342557ceb65e4890e32fea1d775c6c668def4ac8361f92199d01214719bea002b1696585323fa58759954a3ecc8e
SHA1 hash: 3cad9461b878d8dac689201010539ac88b25616c
MD5 hash: 40d18ab9b48c16d917ab69e101fa45eb
humanhash: spaghetti-xray-edward-charlie
File name:40d18ab9b48c16d917ab69e101fa45eb
Download: download sample
Signature Formbook
Create hunting rule
File size:529'347 bytes
First seen:2024-06-14 03:43:09 UTC
Last seen:2024-06-14 07:21:55 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 6144:JwAYwAYwAYwAYwAYwAYwAYwAYwAYwA0T0cggms:9
TLSH T1FAB4792DD34B02598F620377AB571E5141BDBA7EF38552B1306C533933EAC39A2252BE
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
153
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca.rtf
Verdict:
Suspicious activity
Analysis date:
2024-06-14 03:45:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/79bf8a69-e35e-4e20-820d-5a9fc79f2a4c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
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

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666bbcf2da26254765600f33win7simulatehigh_evasion
Tags:
Network Office Static Stealth Obfuscated
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
Launching a service
Creating a file
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
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca
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/1457027
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
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Equation Editor Network Connection
Sigma detected: Suspicious Microsoft Office Child Process
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses ipconfig to lookup or modify the Windows network settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1457027 Sample: fiY5fTkFKk.rtf Startdate: 14/06/2024 Architecture: WINDOWS Score: 100 56 Snort IDS alert for network traffic 2->56 58 Multi AV Scanner detection for domain / URL 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 14 other signatures 2->62 11 WINWORD.EXE 291 18 2->11         started        process3 process4 13 EQNEDT32.EXE 11 11->13         started        18 EQNEDT32.EXE 11->18         started        dnsIp5 52 covid19help.top 104.21.83.128, 443, 49162 CLOUDFLARENETUS United States 13->52 40 C:\Users\user\AppData\...\rothc23456.scr, PE32 13->40 dropped 42 C:\Users\user\AppData\Local\...\rothc[1].scr, 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 rothc23456.scr 1 7 13->20         started        file6 signatures7 process8 signatures9 68 Multi AV Scanner detection for dropped file 20->68 70 Machine Learning detection for dropped file 20->70 72 Injects a PE file into a foreign processes 20->72 23 rothc23456.scr 20->23         started        process10 signatures11 74 Maps a DLL or memory area into another process 23->74 26 MfbBDeMTPjcbwTNZ.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 ipconfig.exe 1 20 26->29         started        process14 dnsIp15 54 www.sqlite.org 45.33.6.223, 49164, 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 MfbBDeMTPjcbwTNZ.exe 29->34 injected 38 firefox.exe 29->38         started        file16 signatures17 process18 dnsIp19 46 www.heolty.xyz 34->46 48 parkingpage.namecheap.com 91.195.240.19, 49209, 49210, 49211 SEDO-ASDE Germany 34->48 50 22 other IPs or domains 34->50 64 Found direct / indirect Syscall (likely to bypass EDR) 34->64 signatures20 66 Performs DNS queries to domains with low reputation 46->66
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-06-13 07:46:36 UTC
File Type:
Document
Extracted files:
3
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gmcg32tcmwk7erzqoatzv4izvfu4buaesw6auzds6kldb4dwj7fa._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240614-eag3caxgqr/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Gathers network information
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/33046dea6265/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/33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca

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_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: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 33046dea626595f2473070279af119a969c0d00495bc0a6472f29630f0764fca

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2887561/

Comments


Avatar
zbet commented on 2024-06-14 03:43:10 UTC

url : hxxps://covid19help.top/rothc.doc