MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4
SHA3-384 hash: e674fba3a17033fecb39b455cd1c707a5eb4a55eb31b1245eb8d11bf32af6dd1373ee3f69afdc9ee20d45fdd9eb0feb3
SHA1 hash: c927a5c75bb0c197c73b374e129d6751cad43b51
MD5 hash: 8b049d5e850fc75c1cef5edb8fc68feb
humanhash: double-jig-king-freddie
File name:8b049d5e850fc75c1cef5edb8fc68feb
Download: download sample
Signature Formbook
Create hunting rule
File size:397'016 bytes
First seen:2024-06-13 11:07:35 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 6144:HwAYwAYwAYwAYwAYwAYwAYwAYwAYwA8ujxud:qm
TLSH T192849C2DD34B02598F620376AB571E5142BDBB7EF38552B1302C537933EAC39A1252BE
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
covid19
Create hunting rule
ID:
1
File name:
a99076b879e5fe8f5810cc6855527b5bf6f71658c44c9bad62b69f1bc0513b15.doc
Verdict:
Malicious activity
Analysis date:
2024-06-13 10:27:21 UTC
Tags:
cve-2017-0199 exploit cve-2017-11882 covid19 formbook xloader
Link:
https://app.any.run/tasks/7f6a4137-ca4e-4cd8-a770-42d64b921547

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:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666ad389da262547655f04b5win7simulatehigh_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 the default Windows debugger (dwwin.exe)
Creating a file
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:
RTF File
Link:
https://app.docguard.net/d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/666ad3326b8dba248b406e97/reports/725adf12-f2ef-4242-9fda-86b9605ab4c4/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4
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/1456552
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)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1456552 Sample: D7KV2Z73zC.rtf Startdate: 13/06/2024 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 13 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\...\sharon90126.scr, PE32 13->40 dropped 42 C:\Users\user\AppData\Local\...\sharo[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 sharon90126.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 sharon90126.scr 20->23         started        process10 signatures11 74 Maps a DLL or memory area into another process 23->74 26 BXOsecPHrSpTXqHm.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 dfrgui.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 BXOsecPHrSpTXqHm.exe 29->34 injected 38 firefox.exe 29->38         started        file16 signatures17 process18 dnsIp19 46 www.99b6q.xyz 34->46 48 parkingpage.namecheap.com 91.195.240.19, 49173, 49174, 49175 SEDO-ASDE Germany 34->48 50 7 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
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-06-13 05:40:20 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=2ol6xwebeytmh7b2amckboqdwikttxbgx6rk2ff2m7evdwv3t72a._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240613-m8jylazflr/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Process spawned suspicious child process
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Process spawned unexpected child process
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1e09cd33-9ebf-490e-afa1-c99bd8b9b577
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d397ebd88126/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/d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4

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: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 d397ebd8812626c3fc3a0304a0ba03b21539dc26bfa2ad14ba67c951dabb9ff4

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2886443/

Comments


Avatar
zbet commented on 2024-06-13 11:07:37 UTC

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