MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123. 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
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SHA256 hash: da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123
SHA3-384 hash: 254383ac96f8d6c8eec89b36984f2f61d3a2d65a5fe4663cb238483b34f11f1bf1db3f8c3ae53be239eaca184f41249a
SHA1 hash: 9ded925615bd1ef1c5dd88febdd10b1bb29b83df
MD5 hash: fb3027e4c7adc0370181f6f73c6dff33
humanhash: carolina-hydrogen-michigan-stream
File name:nell.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:525'472 bytes
First seen:2024-07-17 09:24:47 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W62W626:ZP
TLSH T16BB4A32DD34B02598F620377AB571E5042BDBA7EF38552B1302C537933EAD39A1252BE
Reporter NDA0E
Tags:CVE-2017-11882 doc FormBook


Avatar
NDA0E
https://heinltd.top/nell.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
390
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
sample.doc
Verdict:
No threats detected
Analysis date:
2024-07-17 09:51:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0ef51376-f229-4cbf-8084-8de0e9c55057

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/msword
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

MiscreantPunch.RTF.2017-0199.Obfus.171711.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=66978df44de77648397b7490
Tags:
Exploit Generic Network Office W97m
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Using the Windows Management Instrumentation requests
DNS request
Creating a window
Searching for synchronization primitives
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Launching a service
Setting browser functions hooks
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
Creating a process from a recently created file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lolbin packed shell32
Link:
https://www.filescan.io/uploads/66978df9a537d9330bdec0df/reports/1971a138-68b8-4ab0-9033-77a56d199bb7/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123
Gathering data
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1474828
Signature
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document exploit detected (process start blacklist hit)
Drops PE files with a suspicious file extension
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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
Modifies the context of a thread in another process (thread injection)
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)
Sample uses process hollowing technique
Sigma detected: Equation Editor Network Connection
Sigma detected: Suspicious Microsoft Office Child Process
Snort IDS alert for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1474828 Sample: nell.doc Startdate: 17/07/2024 Architecture: WINDOWS Score: 100 43 www.agiletzal.site 2->43 67 Snort IDS alert for network traffic 2->67 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 12 other signatures 2->73 12 WINWORD.EXE 289 18 2->12         started        signatures3 process4 file5 41 C:\Users\user\Desktop\~$nell.doc, data 12->41 dropped 15 EQNEDT32.EXE 11 12->15         started        20 EQNEDT32.EXE 12->20         started        process6 dnsIp7 51 heinltd.top 104.21.84.22, 443, 49161 CLOUDFLARENETUS United States 15->51 37 C:\Users\user\AppData\Roaming\nell56789.scr, PE32 15->37 dropped 39 C:\Users\user\AppData\Local\...\nell[1].scr, PE32 15->39 dropped 61 Installs new ROOT certificates 15->61 63 Office equation editor establishes network connection 15->63 65 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 15->65 22 nell56789.scr 1 7 15->22         started        file8 signatures9 process10 signatures11 75 Machine Learning detection for dropped file 22->75 77 Tries to detect virtualization through RDTSC time measurements 22->77 79 Injects a PE file into a foreign processes 22->79 81 Switches to a custom stack to bypass stack traces 22->81 25 nell56789.scr 22->25         started        process12 signatures13 83 Modifies the context of a thread in another process (thread injection) 25->83 85 Maps a DLL or memory area into another process 25->85 87 Sample uses process hollowing technique 25->87 89 2 other signatures 25->89 28 explorer.exe 1 3 25->28 injected process14 dnsIp15 45 www.wirewizardselectric.net 28->45 47 www.thedivorcesurvivalguide.com 28->47 49 16 other IPs or domains 28->49 91 System process connects to network (likely due to code injection or exploit) 28->91 93 Uses netstat to query active network connections and open ports 28->93 32 NETSTAT.EXE 28->32         started        signatures16 process17 signatures18 53 Modifies the context of a thread in another process (thread injection) 32->53 55 Maps a DLL or memory area into another process 32->55 57 Tries to detect virtualization through RDTSC time measurements 32->57 59 Found direct / indirect Syscall (likely to bypass EDR) 32->59 35 cmd.exe 32->35         started        process19
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-07-17 08:55:48 UTC
File Type:
Document
Extracted files:
3
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3j2zp3wspc3oxmzqnbpbzlvgyg6gvwnsvp7zv6qfmm7uznpxuerq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:btrd rat spyware stealer trojan
Link:
https://tria.ge/reports/240717-ldl9ssvaqr/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d44127ea-35b1-4ac1-b7a1-5ac353b853b1
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/da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123

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

Word file doc da7597eed278b6ebb330685e1caea6c1bc6ad9b2abff9afa05633f4cb5f7a123

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3047973/

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