MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db
SHA3-384 hash: 4465f0fd57e8245863e8627774599ff59b7d7c4555eec55753486fa626ae2d912222f746f38d8de1fd2fb69695496d37
SHA1 hash: fe64a25f50edef0cbd0d96019a793468b82f21b4
MD5 hash: 36a2ef1b4b46f1bded1bdc073ee3195a
humanhash: xray-stream-red-emma
File name:36a2ef1b4b46f1bded1bdc073ee3195a.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:53'024 bytes
First seen:2023-09-08 19:30:18 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:owAbZSibMX9gRWjEWWdRp02SHQQwX12p/Q/F4ebj5c:owAlR/WEPSHhwF6/Q94eb2
TLSH T14533156CC34F02A9CF6252379B2A0A4542FDBB3EF34551A5346C437933EE82D91662BD
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
125
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
36a2ef1b4b46f1bded1bdc073ee3195a.rtf
Verdict:
Malicious activity
Analysis date:
2023-09-08 19:32:30 UTC
Tags:
exploit cve-2017-11882 loader stealer agenttesla
Link:
https://app.any.run/tasks/a21395b7-013c-4add-8f0c-28ea48f2be57

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file in the %AppData% directory
Сreating synchronization primitives
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db/results/dashboard
Behaviour
BlacklistAPI detected
Gathering data
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1306448
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: File Dropped By EQNEDT32EXE
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses known network protocols on non-standard ports
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1306448 Sample: jScpWgr01u.rtf Startdate: 08/09/2023 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 11 other signatures 2->43 7 EQNEDT32.EXE 11 2->7         started        12 WINWORD.EXE 336 13 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 29 185.28.39.17, 49164, 7777 NETROUTING-ASNL Belgium 7->29 23 C:\Users\user\...\arinzenolfif846831.exe, PE32 7->23 dropped 25 C:\Users\user\AppData\...\arinzezx[1].exe, PE32 7->25 dropped 51 Office equation editor establishes network connection 7->51 53 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->53 16 arinzenolfif846831.exe 1 7 7->16         started        file5 signatures6 process7 signatures8 31 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->31 33 Machine Learning detection for dropped file 16->33 35 Injects a PE file into a foreign processes 16->35 19 arinzenolfif846831.exe 2 16->19         started        process9 dnsIp10 27 cp5ua.hyperhost.ua 91.235.128.141, 49166, 587 ITLASUA Ukraine 19->27 45 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->45 47 Tries to steal Mail credentials (via file / registry access) 19->47 49 Tries to harvest and steal browser information (history, passwords, etc) 19->49 signatures11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-09-08 14:05:58 UTC
File Type:
Document
Extracted files:
3
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mhyi2wg3voxway7t6o2e7xzgwswplj6uhzpbpzk3767h7kjiahnq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/230908-x8cjmafa5v/
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 use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/61f08d58dbab/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/61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db

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

AgentTesla

Rich Text Format (RTF) rtf 61f08d58dbabaf6063f3f3b44fdf26b4acf5a7d43e5e17e55bffbe7fa92801db

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2710134/
  
Delivery method
Distributed via web download

Comments