MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1. 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: a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1
SHA3-384 hash: 69d532c5f65907c1451bf70d86d32038074a7f4c7d42efa3d45e077496a4d59c03178811ce4414e4f3582f1c5c80df45
SHA1 hash: f9e5fc146537b14846686f24cf3776b2ea096bd7
MD5 hash: 2fdf771221253c034cb69f52209d9de3
humanhash: seventeen-jupiter-diet-cup
File name:2fdf771221253c034cb69f52209d9de3.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:12'256 bytes
First seen:2021-03-01 18:56:04 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:v3USUEhCG3spfm0wRgvA9atOItBaQUyyEFnM4Vp1WytoL76T1uPQKCJZZAP:v3ErzpO0widtBabXsM4V178QK8AP
TLSH F9428FB4C6F978B48B426453C63B3686963A3AFFE73040B1B80C44553BB62479EB94B4
Reporter abuse_ch
Tags:AgentTesla rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ORDER_2020_54.xlsx
Verdict:
Suspicious activity
Analysis date:
2021-03-01 15:17:37 UTC
Tags:
encrypted
Link:
https://app.any.run/tasks/fb08229a-2931-4710-bd21-037e7bfee77c

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):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
Creating a file
Using the Windows Management Instrumentation requests
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process by context flags manipulation
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/a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1/results/dashboard
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/622741
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Yara detected Beds Obfuscator
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 360366 Sample: 5r3bB5mngm.rtf Startdate: 01/03/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Antivirus detection for URL or domain 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 13 other signatures 2->45 7 EQNEDT32.EXE 12 2->7         started        12 WINWORD.EXE 336 18 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 29 5.39.217.221, 49167, 80 HOSTKEY-ASNL Netherlands 7->29 23 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 7->23 dropped 25 C:\Users\Public\vbc.exe, PE32 7->25 dropped 55 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->55 16 vbc.exe 7->16         started        file5 signatures6 process7 signatures8 31 Multi AV Scanner detection for dropped file 16->31 33 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->33 35 Machine Learning detection for dropped file 16->35 37 2 other signatures 16->37 19 vbc.exe 10 16->19         started        process9 dnsIp10 27 smtp.privateemail.com 199.193.7.228, 49168, 49169, 587 NAMECHEAP-NETUS United States 19->27 47 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->47 49 Tries to steal Mail credentials (via file access) 19->49 51 Tries to harvest and steal ftp login credentials 19->51 53 2 other signatures 19->53 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-03-01 15:21:35 UTC
AV detection:
13 of 28 (46.43%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210301-sp7vs5epea/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
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
Uses the VBS compiler for execution
Blocklisted process makes network request
Executes dropped EXE
AgentTesla Payload
Beds Protector Packer
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1

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 a3f659f69af881da3c76ce0271cad4875aeeddbe1b7f27a7601607223fa92ac1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1040003/
  
Delivery method
Distributed via web download

Comments