MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f236155d74ebac339f1fc35ce210cc75b1c03a0b117f29ae9fef46140d188074. 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

SHA256 hash: f236155d74ebac339f1fc35ce210cc75b1c03a0b117f29ae9fef46140d188074
SHA3-384 hash: c8b660cbcb693213ca6b6313037e1208319295eac75947279649daeb4b276c8e83dffaa9eba8cf33c8aa9ec8d11965dd
SHA1 hash: f04a66200ddf2b02ab3ab8c22cf526a29dd1d4fd
MD5 hash: 1166118f5f1c6cfb1e3592a0af419e43
humanhash: mirror-glucose-oven-seventeen
File name:N O pdf.exe
Download: download sample
Signature AgentTesla
File size:639'488 bytes
First seen:2020-09-01 10:04:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:REInwf2M7+RbCy2g488xmvIeEky7dkIbcwZxRGL2EgdV7quyv6xx1WaaMHYbesO3:1nyF6b0ZLky7dkIbBRGL2EA5qu1
Threatray 10'646 similar samples on MalwareBazaar
TLSH B3D4DFAC765476DFC8ABC9768EAC2C64EA1074AB430FD253901706ED9A0D99BCF150F3
Reporter JAMESWT_WT
Tags:AgentTesla

Intelligence


File Origin
# of uploads :
1
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
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
Moving of the original file
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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: Scheduled temp file as task from temp location
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 AntiVM_3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 280625 Sample: N O pdf.exe Startdate: 01/09/2020 Architecture: WINDOWS Score: 100 66 Found malware configuration 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 9 other signatures 2->72 7 N O pdf.exe 4 2->7         started        10 YYtJku.exe 2 2->10         started        12 YYtJku.exe 3 2->12         started        process3 file4 42 C:\Users\user\AppData\...\orZZmgscOgURi.exe, PE32 7->42 dropped 44 C:\Users\user\AppData\Local\...\tmp4CFF.tmp, XML 7->44 dropped 46 C:\Users\user\AppData\...46 O pdf.exe.log, ASCII 7->46 dropped 15 N O pdf.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        22 YYtJku.exe 10->22         started        24 schtasks.exe 10->24         started        74 Multi AV Scanner detection for dropped file 12->74 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->76 78 Machine Learning detection for dropped file 12->78 80 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->80 26 schtasks.exe 1 12->26         started        28 YYtJku.exe 2 12->28         started        30 YYtJku.exe 12->30         started        signatures5 process6 dnsIp7 48 us2.smtp.mailhostbox.com 208.91.199.225, 49734, 587 PUBLIC-DOMAIN-REGISTRYUS United States 15->48 50 192.168.2.1 unknown unknown 15->50 38 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 15->38 dropped 40 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 15->40 dropped 54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->54 56 Moves itself to temp directory 15->56 58 Tries to steal Mail credentials (via file access) 15->58 32 conhost.exe 20->32         started        52 208.91.199.223, 49747, 587 PUBLIC-DOMAIN-REGISTRYUS United States 22->52 60 Tries to harvest and steal ftp login credentials 22->60 62 Tries to harvest and steal browser information (history, passwords, etc) 22->62 64 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->64 34 conhost.exe 24->34         started        36 conhost.exe 26->36         started        file8 signatures9 process10
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-08-31 15:01:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
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
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
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.

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