MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6. 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: cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6
SHA3-384 hash: 89d742d498ddd027ff2dc00b7820464ea968c5c9312ed995bb872ca65f7b6b71294a7aa2953f7fc91585ebc33c92d9cd
SHA1 hash: ed24eaddf2739fccd448cd1386b1506e5af75d97
MD5 hash: 75bd1384535d144dac3817b457526119
humanhash: lactose-fish-eighteen-one
File name:75bd1384535d144dac3817b457526119
Download: download sample
File size:55'682 bytes
First seen:2023-08-12 04:26:35 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:pwAbZSibMX9gRWj0vwqjtNwvwBuBsQ3EUoR:pwAlRXvhj8Iysyw
TLSH T12543032D974F02A9CF6243379B1A0E4542FDBB7EB39552A1306C837533EE82D91252BD
Reporter zbetcheckin
Tags:CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
75bd1384535d144dac3817b457526119
Verdict:
Malicious activity
Analysis date:
2023-08-12 04:29:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/32e16718-2f36-4a11-9a78-02d525aebd2f

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

Sanesecurity.Malware.28765.RtfHeur.ObjUpd.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
Creating a file in the %AppData% directory
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/64d70a172a1db2a88acaea56/reports/4d641ab5-c886-4eb7-9224-f9c2433cd833/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1290354
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
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)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1290354 Sample: qNsZ1NOV0f.rtf Startdate: 12/08/2023 Architecture: WINDOWS Score: 100 38 Multi AV Scanner detection for domain / URL 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 10 other signatures 2->44 7 EQNEDT32.EXE 11 2->7         started        12 Ckgrxufwthf.exe 2 2->12         started        14 Ckgrxufwthf.exe 2 2->14         started        16 WINWORD.EXE 291 16 2->16         started        process3 dnsIp4 36 2.59.254.18, 49162, 80 CMCSUS Germany 7->36 32 C:\Users\user\AppData\...\ikmeronb74589.exe, PE32+ 7->32 dropped 34 C:\Users\user\AppData\...\ikmerozx[1].exe, PE32+ 7->34 dropped 50 Office equation editor establishes network connection 7->50 52 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->52 18 ikmeronb74589.exe 2 8 7->18         started        54 Multi AV Scanner detection for dropped file 12->54 file5 signatures6 process7 file8 30 C:\Users\user\AppData\...\Ckgrxufwthf.exe, PE32+ 18->30 dropped 46 Multi AV Scanner detection for dropped file 18->46 48 Sample uses process hollowing technique 18->48 22 MSBuild.exe 18->22         started        24 MSBuild.exe 18->24         started        26 MSBuild.exe 18->26         started        28 7 other processes 18->28 signatures9 process10
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-08-11 02:50:33 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=z37acg5bp5q6cwo2xm6vqy6jwhyak4lzaauoidkegeaodqcmbk3a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/230812-e234wsaa68/
Behaviour
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cefe011ba17f/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/cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6

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 cefe011ba17f61e159dabb3d5863c9b1f00571790028e40d443100e1c04c0ab6

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2704014/

Comments


Avatar
zbet commented on 2023-08-12 04:26:36 UTC

url : hxxp://2.59.254.18/_errorpages/ikmerozx.doc