MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20a8ca777ba828efffa12d141713da098fe742dd950797a0599e433a4a692757. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 20a8ca777ba828efffa12d141713da098fe742dd950797a0599e433a4a692757
SHA3-384 hash: 5dc9a2f72324dd26230cd0aef23f4126d1a4085c67ca902eb69c0874f5829af37ab48d9e8b0f0b6abb0c7781efc9e870
SHA1 hash: f43b640dc53a26fd03691fb39de229148537759b
MD5 hash: eac4fa22d901a2b63cee46a1c1f301d9
humanhash: carolina-pizza-gee-victor
File name:Flight Ticket Payment Refund Confirmation 377829377299283 ETK 372892.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:596'992 bytes
First seen:2020-07-16 08:08:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:pdYm2k4zUwQlToHRdbDx55SNFqG1z5LkWnDGMzB:peuynj5Sj
Threatray 11'036 similar samples on MalwareBazaar
TLSH 16C49DCC3514719EC85F8C768994DC30AA206C66F7FBD20663C36D9F7A3D697CA052A2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: lasfragancias.com
Sending IP: 200.110.77.218
From: My Trips <funioro@lasfragancias.com>
Subject: Ticket refund confirmation PNR 889XX
Attachment: Flight Ticket Payment Refund Confirmation 377829377299283 ETK 372892.z (contains "Flight Ticket Payment Refund Confirmation 377829377299283 ETK 372892.exe")

AgentTesla FTP exfil server:
ftp.rebu.co.rw:21

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/26508/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/389453
Signature
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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: Capture Wi-Fi password
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 harvest and steal WLAN passwords
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 246909 Sample: Flight Ticket Payment Refun... Startdate: 19/07/2020 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Sigma detected: Capture Wi-Fi password 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 7 other signatures 2->61 8 IYLZX5.exe 1 2->8         started        11 Flight Ticket Payment Refund Confirmation 377829377299283 ETK 372892.exe 1 2->11         started        14 IYLZX5.exe 2->14         started        process3 file4 63 Multi AV Scanner detection for dropped file 8->63 65 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->65 67 Machine Learning detection for dropped file 8->67 69 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->69 16 IYLZX5.exe 14 3 8->16         started        20 IYLZX5.exe 8->20         started        37 Flight Ticket Paym... ETK 372892.exe.log, ASCII 11->37 dropped 71 Injects a PE file into a foreign processes 11->71 22 Flight Ticket Payment Refund Confirmation 377829377299283 ETK 372892.exe 16 6 11->22         started        signatures5 process6 dnsIp7 41 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->41 43 Tries to steal Mail credentials (via file access) 16->43 45 Tries to harvest and steal ftp login credentials 16->45 47 Tries to harvest and steal browser information (history, passwords, etc) 16->47 25 netsh.exe 3 16->25         started        39 ftp.rebu.co.rw 104.247.74.6, 21, 30723, 32811 IMH-WESTUS United States 22->39 33 C:\Users\user\AppData\Roaming\...\IYLZX5.exe, PE32 22->33 dropped 35 C:\Users\user\...\IYLZX5.exe:Zone.Identifier, ASCII 22->35 dropped 49 Tries to harvest and steal WLAN passwords 22->49 51 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->51 53 Installs a global keyboard hook 22->53 27 netsh.exe 3 22->27         started        file8 signatures9 process10 process11 29 conhost.exe 25->29         started        31 conhost.exe 27->31         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/20a8ca777ba828efffa12d141713da098fe742dd950797a0599e433a4a692757/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-16 08:10:12 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ecumu533vauo775bfukboe62bgh6oqw5sudzpicztzbtustje5lq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 11'026 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger trojan stealer spyware family:agenttesla persistence
Link:
https://tria.ge/reports/200716-zat3h86g9x/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Modifies service
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

z b8b6e4a4f6bec623487e44997ba6f060b425e9ccbe25e679da1739b8e47b7f9d

AgentTesla

Executable exe 20a8ca777ba828efffa12d141713da098fe742dd950797a0599e433a4a692757

(this sample)

  
Dropped by
MD5 9d63c7d1330e0794791a397316a89024
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/26508/
  
Dropped by
SHA256 b8b6e4a4f6bec623487e44997ba6f060b425e9ccbe25e679da1739b8e47b7f9d

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