MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a. 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


AgentTesla


Vendor detections: 10


Intelligence 10 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a
SHA3-384 hash: 898d239678aa910abd6e05aa88899aaee8e1c2922950ab34c1f1790ac79dec176843f4933cbd5ad08210b637fc4df6fe
SHA1 hash: fd085b0dd95f237dd6c35ba02a68dee4541c9b69
MD5 hash: 77fb6c90ee9d65248e3493cee1eccfff
humanhash: jupiter-utah-idaho-hamper
File name:77fb6c90ee9d65248e3493cee1eccfff.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:9'789 bytes
First seen:2021-02-12 07:03:44 UTC
Last seen:2021-02-12 09:07:48 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:sDCOjEmMVgR+xNO7KWFGCQ5JQUfaWDEzj1D0xlq+GzqGtUjTZMi3eIlo:iWmM6R+mkl5JQkqjCqtqGqZmMo
TLSH E4126BC06A58247EE15946938B3AF9E8065FF87A24C645D0B2FCA7737F67002CFA641C
Reporter abuse_ch
Tags:AgentTesla rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
144
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
77fb6c90ee9d65248e3493cee1eccfff.rtf
Verdict:
Malicious activity
Analysis date:
2021-02-12 07:08:12 UTC
Tags:
exploit CVE-2017-11882
Link:
https://app.any.run/tasks/f49e9ff7-6d60-461a-936b-163642cd3441

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file
Reading critical registry keys
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/606497
Signature
Drops PE files to the user root directory
Machine Learning detection for dropped file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-12 07:07:25 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yuix2mcuktwrv36afcdvhngrl42fbbw6drmkxmvjlptyv6ff2bfa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/210212-8zyvfn3kgj/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Executes dropped EXE
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/c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
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:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

AgentTesla

Rich Text Format (RTF) rtf c5117d305454ed1aefc0288753b4d15f345086de1c58abb2a95be78af8a5d04a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/994712/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1002394/

Comments