MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f. 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: e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f
SHA3-384 hash: be3a80e142e4d88276eb1b9d923d9d65552c75f4b3fca4b03fbab5051278c44cb093aa9780da11ce642d164a942ccfb3
SHA1 hash: b26b0ee27a29531bc6868a10bbb8a2bc13b1b93f
MD5 hash: 762dbe123e50a572a712d62bed017360
humanhash: crazy-minnesota-bluebird-iowa
File name:762dbe123e50a572a712d62bed017360.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:34'179 bytes
First seen:2023-07-24 06:58:12 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:CFx0XaIsnPRIa4fwJMszRm6TdJIBjeM40WosNCQV5SV:Cf0Xvx3EMsVdqj54NosNCj
TLSH T1D2E28F1AE79F02A88F911277271B1E89A6BDB23EF3505571785C833433DDC2E42666BC
TrID 71.4% (.PZ2) Poser pose (12500/1/4)
28.5% (.RTF) Rich Text Format (5000/1)
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 rtf


Avatar
abuse_ch
AgentTesla SMTP exfil server:

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
762dbe123e50a572a712d62bed017360.rtf
Verdict:
Malicious activity
Analysis date:
2023-07-24 07:01:11 UTC
Tags:
exploit cve-2017-11882 loader stealer agenttesla
Link:
https://app.any.run/tasks/459d74c0-397f-4422-a8df-294d138e723c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.28669.RtfHeur.UNOFFICIAL
Create hunting rule

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

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

TwinWave.EvilDoc.PKILLLureTextKingOfWishfulThinking.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/e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/64be2137e179a8163b7e9916/reports/72b3b72d-e699-41f6-9831-2d8ca876c67d/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f
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/1278068
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: EQNEDT32.EXE connecting to internet
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1278068 Sample: OoMJp6KO3w.rtf Startdate: 24/07/2023 Architecture: WINDOWS Score: 100 36 Multi AV Scanner detection for domain / URL 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 11 other signatures 2->42 7 EQNEDT32.EXE 11 2->7         started        12 WINWORD.EXE 336 17 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 26 87.121.221.212, 49183, 80 TING-WIRELESSUS Bulgaria 7->26 22 C:\Users\user\AppData\...\texasanofj6861.exe, PE32 7->22 dropped 24 C:\Users\user\AppData\...\texaszx[1].exe, PE32 7->24 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 16 texasanofj6861.exe 1 5 7->16         started        file5 signatures6 process7 signatures8 28 Multi AV Scanner detection for dropped file 16->28 30 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->30 32 Machine Learning detection for dropped file 16->32 34 Injects a PE file into a foreign processes 16->34 19 texasanofj6861.exe 12 2 16->19         started        process9 signatures10 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->44 46 Tries to steal Mail credentials (via file / registry access) 19->46 48 Tries to harvest and steal browser information (history, passwords, etc) 19->48
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-07-24 04:27:05 UTC
File Type:
Document
Extracted files:
3
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4qr5w43ejmlxvrv34ncfsmxi2i7nla23awfpevzhpvz36dxzbahq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection spyware stealer
Link:
https://tria.ge/reports/230724-hr3bdsbd6t/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
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
Looks up external IP address via web service
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
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e423db73644b/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/e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f

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 e423db73644b177ac6bbe3445932e8d23ed5835b058af257277d73bf0ef9080f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2682450/
  
Delivery method
Distributed via web download

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