MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1
SHA3-384 hash: b829f9605189a691c3446ea935ec2969ac4aaa92769ea66370321b11a3f134e3d8589af43b31893a753baea556c62f0c
SHA1 hash: 43af05c60ec595b3dd6b39e2eee3b686fca7ed0c
MD5 hash: dd9783da2e8fbb9ab0383e0c1641a14e
humanhash: ink-don-five-autumn
File name:dd9783da2e8fbb9ab0383e0c1641a14e.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:65'982 bytes
First seen:2023-08-08 07:42:12 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:twAbZSibMX9gRWjS0GUsq4H/wWgmMsToLzeX7WzW/S9AmgzzuE/j:twAlRiGA4H/Czg7eAxzzf/j
TLSH T1E953476D934F02A9CF525237AB1A1E8441FDBB7EB74051B0346C533933EE92DA1262BD
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
dd9783da2e8fbb9ab0383e0c1641a14e.rtf
Verdict:
Malicious activity
Analysis date:
2023-08-08 07:46:04 UTC
Tags:
exploit cve-2017-11882 loader agenttesla stealer
Link:
https://app.any.run/tasks/7d976fdc-0b0b-43aa-aa81-7e8cff98bc3a

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.29030.RtfHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.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
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/757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1/results/dashboard
Behaviour
BlacklistAPI detected
Gathering data
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1
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/1287581
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
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)
Sample uses string decryption to hide its real strings
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: 1287581 Sample: j3z0ZL80Zl.rtf Startdate: 08/08/2023 Architecture: WINDOWS Score: 100 36 Multi AV Scanner detection for domain / URL 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 13 other signatures 2->42 7 EQNEDT32.EXE 11 2->7         started        12 WINWORD.EXE 336 11 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 26 2.59.254.18, 49159, 80 CMCSUS Germany 7->26 22 C:\Users\user\AppData\...\lawoh68951.exe, PE32 7->22 dropped 24 C:\Users\user\AppData\Local\...\lawzx[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 lawoh68951.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 lawoh68951.exe 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/757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-08-08 06:28:55 UTC
File Type:
Document
Extracted files:
3
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ov7hnz3vhc2qozqd4pox6romtey77twk4jnqenspmd3csw6f2gyq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/230808-jj9aeabc63/
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
Suspicious use of SetThreadContext
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/757e76e77538/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/757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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 757e76e77538b5076603e3dd7f45cc9931ffcecae25b02364f60f6295bc5d1b1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2695832/
  
Delivery method
Distributed via web download

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