MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f
SHA3-384 hash: 310944648ac73aa2d56588625187f8c3e1d7e1bdbafab4683bc1f896624eac29a85b77366b8ba5c99507a0f623835a7a
SHA1 hash: 109b0743d7ded5b6e84b8e3bd181d8afa7e6d6ae
MD5 hash: 50a7178984edad2fb6cfc152cabf0315
humanhash: purple-kentucky-king-november
File name:50a7178984edad2fb6cfc152cabf0315
Download: download sample
Signature Formbook
Create hunting rule
File size:157'213 bytes
First seen:2024-01-18 09:36:18 UTC
Last seen:2024-01-18 14:01:41 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:HwAbZSibMX9gRWjtwAbZSibMX9gRWjl9XdCAi6iGd/UgP6WffaOmcubXccPKI:HwAlRkwAlRKhdCnrGnNscJI
TLSH T10DE39B6DD34F02698F6253369B171E5442BCBA3EF38512B1346C437933EAC39A1266BD
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
3
# of downloads :
128
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
68d274fefca7e97cd103190760443388f373e8799b430e9ecb24a194376d6a0f.doc
Verdict:
Malicious activity
Analysis date:
2024-01-18 07:54:48 UTC
Tags:
loader exploit cve-2017-11882 formbook xloader stealer spyware
Link:
https://app.any.run/tasks/cb22ac46-835f-431d-b1aa-485b46d2e56a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Exploit.CVE-2018-0798.4.2263.5561.UNOFFICIAL
Create hunting rule

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

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Query of malicious DNS domain
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
89%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/65a8f14099da41ccd7d717b3/reports/7a4eb0b9-ae65-4c95-b47c-bb78c0414989/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f
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/1376628
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
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 document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
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: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1376628 Sample: wrYmyTer6N.rtf Startdate: 18/01/2024 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 15 other signatures 2->53 11 WINWORD.EXE 291 15 2->11         started        process3 file4 35 ~WRF{E6848221-471D...6-235EB0CCF777}.tmp, Composite 11->35 dropped 14 EQNEDT32.EXE 11 11->14         started        process5 dnsIp6 41 zsin2.ebnsina.top 172.67.167.246, 49160, 80 CLOUDFLARENETUS United States 14->41 37 C:\Users\user\AppData\...\ebile60295.exe, PE32 14->37 dropped 39 C:\Users\user\AppData\...\ebilezx[1].exe, PE32 14->39 dropped 43 Office equation editor establishes network connection 14->43 45 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 14->45 19 ebile60295.exe 2 14->19         started        file7 signatures8 process9 signatures10 55 Antivirus detection for dropped file 19->55 57 Multi AV Scanner detection for dropped file 19->57 59 Machine Learning detection for dropped file 19->59 61 Injects a PE file into a foreign processes 19->61 22 ebile60295.exe 19->22         started        process11 signatures12 63 Maps a DLL or memory area into another process 22->63 25 hegDkVEABBCIAMiwzVWFFYKeFLj.exe 22->25 injected process13 signatures14 65 Maps a DLL or memory area into another process 25->65 28 gpresult.exe 25->28         started        process15 signatures16 67 Maps a DLL or memory area into another process 28->67 69 Queues an APC in another process (thread injection) 28->69 31 explorer.exe 3 28->31 injected 33 hegDkVEABBCIAMiwzVWFFYKeFLj.exe 28->33 injected process17
Score:
100%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-01-18 02:34:37 UTC
File Type:
Document
Extracted files:
3
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vnyqvjtzz4wfqu7ygfataesv3sapppl3dzqsrfghnq6pg2y6aghq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240118-llgdhsghdj/
Behaviour
Checks processor information in registry
Enumerates system info in registry
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/ab710aa679cf/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f

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 ab710aa679cf2c5853f83141301255dc80f7bd7b1e612894c76c3cf36b1e018f

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2749290/

Comments


Avatar
zbet commented on 2024-01-18 09:36:19 UTC

url : hxxp://zang3.conyersdill.top/_errorpages/ebilezx.doc