MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377
SHA3-384 hash: f8dfd0c5321a04307d491c5fbeaa44dcce8c295c0690d1bf1e3d3b77ecba2e37840e1d270fa60e6b19b39f4c4dea3a80
SHA1 hash: bf07f86c118c065a420fab70b050b0356616a56f
MD5 hash: 2cc05a1c5eddac8787d2aba98ba1fdc6
humanhash: dakota-lake-lemon-football
File name:2cc05a1c5eddac8787d2aba98ba1fdc6.rtf
Download: download sample
Signature AgentTesla
Create hunting rule
File size:11'816 bytes
First seen:2021-03-29 13:45:30 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:wYqVki5OqtHeGWKzQ4wK4divN3Rf/8XQazcDRrEY4eTAYERL0Qnclu4nxDZE2XsD:wYePztJTk4tlt2f+rEY4eT5E9XoZxDmz
TLSH C6325C00D6DDAD62C79EA2A782956A0C8339B93F277B55B97D0C52423F7030B4EBC574
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2cc05a1c5eddac8787d2aba98ba1fdc6.rtf
Verdict:
Malicious activity
Analysis date:
2021-03-29 19:51:23 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/5a60867e-b526-4e6c-ba2b-e6d60fa0b444

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
Launching a file downloaded from the Internet
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/3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla Telegram RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/656973
Signature
.NET source code contains potential unpacker
.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
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 detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 377443 Sample: uIIHdM0MHt.rtf Startdate: 29/03/2021 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 17 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 29 198.23.174.104, 49167, 80 AS-COLOCROSSINGUS United States 7->29 23 C:\Users\user\AppData\Local\...\om[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 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->35 37 Injects a PE file into a foreign processes 16->37 19 vbc.exe 12 2 16->19         started        process9 dnsIp10 27 api.telegram.org 149.154.167.220, 443, 49168 TELEGRAMRU United Kingdom 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 Tries to harvest and steal browser information (history, passwords, etc) 19->53 signatures11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-03-29 11:45:53 UTC
AV detection:
13 of 27 (48.15%)
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/210329-evrvs7ft1x/
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
Uses the VBS compiler for execution
Blocklisted process makes network request
Executes dropped EXE
AgentTesla Payload
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot1620445910:AAF2v81NoINJsu_XXnpGet1YDm-NxnznaIE/sendDocument
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/3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377

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_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 3ba5a5d27f209c05b6af95dc9299d5fb37a6a7332fc6871c427eb9b13c477377

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1098354/
  
Delivery method
Distributed via web download

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