MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
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SHA256 hash: c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f
SHA3-384 hash: c38d729a6b1c7b45cf1e097e9a121f25229eff9b0cf2241a3cdf24e126758d1824e85e97a5a49b85c0457300304b040b
SHA1 hash: e522c1906306a031b0b6996ed34c02dd4762d037
MD5 hash: 3289a3401f78873c39e10465d77be4df
humanhash: juliet-william-wolfram-juliet
File name:0iuoioooUIOIOiiiu0u0uioiui0iuiooi0i0u0##############0iuI00UIuoioioU00I0uiuiuiuIUIUiuiu000##############000.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:29'153 bytes
First seen:2023-10-10 14:07:18 UTC
Last seen:Never
File type:Word file doc
MIME type:text/plain
ssdeep 768:4C00p49/GpNtYRBiYQ7YBqpFvGy9B91p0QNHrzyf9nNQgU9:fp2UqRYYQ+ktR/1pknNQX
TLSH T14FD2B468A78F84F5CB95A1731219884D46FCF33E714261E874ACE3B137BE90C4AB55B8
Reporter malwarelabnet
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
stuff.xls
Verdict:
Malicious activity
Analysis date:
2023-10-10 07:45:45 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook xloader stealer spyware
Link:
https://app.any.run/tasks/29182af6-289c-4b5d-aea3-58a0318a4125

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Spam-473.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

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

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file in the %AppData% directory
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control embedequation exploit javascript lolbin masquerade shellcode
Link:
https://www.filescan.io/uploads/65255ac31e07d7e1e9bd25fd/reports/c8285219-63b6-4c53-8696-ed18d0106d6a/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f
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/1323472
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Initial sample is an obfuscated RTF file
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
Modifies the context of a thread in another process (thread injection)
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)
Sample uses process hollowing technique
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1323472 Sample: #####000.doc Startdate: 11/10/2023 Architecture: WINDOWS Score: 100 40 Initial sample is an obfuscated RTF file 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 12 other signatures 2->46 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 336 13 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 38 23.95.106.3, 49161, 49164, 49165 AS-COLOCROSSINGUS United States 10->38 34 C:\Users\user\AppData\Roaming\audiodgse.exe, PE32 10->34 dropped 36 C:\Users\user\AppData\Local\...\Ooseha[1].exe, PE32 10->36 dropped 66 Office equation editor establishes network connection 10->66 68 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->68 19 audiodgse.exe 12 2 10->19         started        file5 signatures6 process7 signatures8 48 Antivirus detection for dropped file 19->48 50 Multi AV Scanner detection for dropped file 19->50 52 Machine Learning detection for dropped file 19->52 54 2 other signatures 19->54 22 audiodgse.exe 19->22         started        process9 signatures10 56 Maps a DLL or memory area into another process 22->56 58 Sample uses process hollowing technique 22->58 60 Queues an APC in another process (thread injection) 22->60 25 HUAMhOMeNqZyJZkDBIU.exe 22->25 injected process11 process12 27 cmstp.exe 25->27         started        signatures13 62 Modifies the context of a thread in another process (thread injection) 27->62 64 Maps a DLL or memory area into another process 27->64 30 HUAMhOMeNqZyJZkDBIU.exe 27->30 injected 32 explorer.exe 27->32 injected process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-10-10 12:56:15 UTC
File Type:
Document
Extracted files:
5
AV detection:
14 of 23 (60.87%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yis24zgwcnzpmakd7bxpl6eywt36pyvcbxqhom3b537aancjb5xq._file
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c225ae64d613/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.05
Link:
https://yomi.yoroi.company/submissions/c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f

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
Rule name:SUSP_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

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 c225ae64d61372f60143f86ef5f898b4f7e7e2a20de0773361eefe0034490f6f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2719191/
  
Delivery method
Distributed via web download

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