MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb576650879372d9663097106467acbdb1fe14df845cc9acaf6cf2141b1c8ec4. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments

SHA256 hash: fb576650879372d9663097106467acbdb1fe14df845cc9acaf6cf2141b1c8ec4
SHA3-384 hash: 8d748a93429c78b4a7c1714690ad5917297b447583aa3e0055ac08e65f7a58a09e309f276906c8a2e736b9816f5207a6
SHA1 hash: 3b478cb46daed7aa32b8f6f21352f69b2af6358c
MD5 hash: a18b08e1cd1f26c3668ff656c1533abb
humanhash: charlie-seventeen-echo-item
File name:Po____211110.exe
Download: download sample
Signature AgentTesla
File size:672'768 bytes
First seen:2021-10-11 04:55:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:bC9Z6MYt39IZ9JAfs8+aYYuE5PwwIwTEgBCrirho1sGc0jAhv:mNYEPaYnAywTEgBNrCijqc
Threatray 11'947 similar samples on MalwareBazaar
TLSH T16FE4D0203DEE621AF177AF768EE4B4559E6EFB622612D45E1490134B0623FC1CDC1A3E
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Po____211110.exe
Verdict:
Malicious activity
Analysis date:
2021-10-11 04:57:59 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Delayed writing of the file
Creating a window
Launching a process
Creating a file in the %temp% directory
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell Defender Exclusion
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 500687 Sample: Po____211110.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->35 37 Found malware configuration 2->37 39 Multi AV Scanner detection for dropped file 2->39 41 7 other signatures 2->41 7 Po____211110.exe 7 2->7         started        process3 file4 25 C:\Users\user\AppData\...\vrIEEXwdcAO.exe, PE32 7->25 dropped 27 C:\Users\user\AppData\Local\...\tmp1CBE.tmp, XML 7->27 dropped 29 C:\Users\user\...\Po____211110.exe.log, ASCII 7->29 dropped 43 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->43 45 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->45 47 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->47 49 3 other signatures 7->49 11 Po____211110.exe 6 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        19 Po____211110.exe 7->19         started        signatures5 process6 dnsIp7 31 croatiahunt.com 116.202.174.203, 49784, 49785, 587 HETZNER-ASDE Germany 11->31 33 mail.croatiahunt.com 11->33 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->51 53 Tries to steal Mail credentials (via file access) 11->53 55 Tries to harvest and steal ftp login credentials 11->55 57 Tries to harvest and steal browser information (history, passwords, etc) 11->57 21 conhost.exe 15->21         started        23 conhost.exe 17->23         started        signatures8 process9
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla collection evasion keylogger spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Maps connected drives based on registry
Checks BIOS information in registry
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Looks for VMWare Tools registry key
AgentTesla Payload
Looks for VirtualBox Guest Additions in registry
AgentTesla
Malware family:
Agent Tesla v3
Verdict:
Malicious
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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Malspam

AgentTesla

Executable exe fb576650879372d9663097106467acbdb1fe14df845cc9acaf6cf2141b1c8ec4

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment

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