MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743. 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


Threat unknown


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: efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743
SHA3-384 hash: 50782a0dab56dbf7b91f30bcd41980b61b69307276068d8b6ab2325c970b6abb1cc196b6397d5aeffc60fc3d35369523
SHA1 hash: 258369cae365f6fb057c2f021f615b6a8ab1c18f
MD5 hash: 06abdd9174e32c4605c3afbbd155f2c5
humanhash: muppet-nine-bacon-network
File name:06abdd9174e32c4605c3afbbd155f2c5
Download: download sample
File size:622'651 bytes
First seen:2024-06-28 06:52:04 UTC
Last seen:2024-06-28 07:26:20 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 6144:IwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAcjuQ:A
TLSH T1FAD4BF2DD34B02598F620377AB571E5142BDBB6EF38552B1302C537933EAC39A1252BE
Reporter zbetcheckin
Tags:CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
142
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.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

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=667e5e0617db6c2841b206d1win10vpnfull_triage
Tags:
Exploit Generic Network Office Static 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
Сreating synchronization primitives
Launching a service
Query of malicious DNS domain
Sending a TCP request to an infection source by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/667e5dcf6b8dba248b4691a9/reports/d943f330-caac-4433-9e1e-82fbc2a6318e/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1464019
Signature
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Equation Editor Network Connection
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-06-25 10:17:17 UTC
File Type:
Document
Extracted files:
3
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=577wcmjrkqwjytskzvdmuacxreom7zs3eqyusisnh7d4zuzxi5bq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/240628-hnl51ayhkj/
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 use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Blocklisted process makes network request
Please note that we are no longer able to provide a coverage score for Virus Total.

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

Rich Text Format (RTF) rtf efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2910244/

Comments


Avatar
zbet commented on 2024-06-28 06:52:05 UTC

url : hxxp://covid19help.top/loudb.doc