MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cbf17be11ce84c79b4d9dfe27a46fd7f3482acd6ae4bb191f5bb3ab92bb82b5b. 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: cbf17be11ce84c79b4d9dfe27a46fd7f3482acd6ae4bb191f5bb3ab92bb82b5b
SHA3-384 hash: 4800a60efbfe32a0f99738ce4790ff912999508f2b6b27e3ca1d101f1f3bde23096823f105857e8b9df6d897134d70a5
SHA1 hash: e81da88d92f8f8971f6d5c5470e37c34952a5e4e
MD5 hash: 81441eeda354ba7c3cfa514fdfc78805
humanhash: idaho-video-arkansas-cup
File name:IMG-160920.exe
Download: download sample
Signature AgentTesla
File size:1'248'768 bytes
First seen:2020-09-16 12:22:57 UTC
Last seen:2020-09-16 13:18:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:uZ8vjGRpKHM6bov2bZ8vjGRpKHM6bov2w:uUGf6bovYUGf6bov/
Threatray 9'205 similar samples on MalwareBazaar
TLSH DC45120833BD1F22E5B967F15968700527B57C7AA991E3AE4DB571CE08B3B018A70F63
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
103
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
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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: 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: 286322 Sample: IMG-160920.exe Startdate: 16/09/2020 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Multi AV Scanner detection for dropped file 2->56 58 Sigma detected: Scheduled temp file as task from temp location 2->58 60 9 other signatures 2->60 7 IMG-160920.exe 6 2->7         started        11 newApp.exe 5 2->11         started        13 newApp.exe 2->13         started        process3 file4 34 C:\Users\user\AppData\...\xDXJEysGAlDqc.exe, PE32 7->34 dropped 36 C:\Users\user\AppData\Local\Temp\tmp7DC.tmp, XML 7->36 dropped 38 C:\Users\user\AppData\...\IMG-160920.exe.log, ASCII 7->38 dropped 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->64 66 Injects a PE file into a foreign processes 7->66 15 IMG-160920.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        68 Multi AV Scanner detection for dropped file 11->68 70 Machine Learning detection for dropped file 11->70 22 newApp.exe 2 11->22         started        24 schtasks.exe 1 11->24         started        signatures5 process6 dnsIp7 40 us2.smtp.mailhostbox.com 208.91.198.143, 49742, 49745, 587 PUBLIC-DOMAIN-REGISTRYUS United States 15->40 42 192.168.2.1 unknown unknown 15->42 30 C:\Users\user\AppData\Roaming\...\newApp.exe, PE32 15->30 dropped 32 C:\Users\user\...\newApp.exe:Zone.Identifier, ASCII 15->32 dropped 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->44 46 Tries to steal Mail credentials (via file access) 15->46 48 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->48 26 conhost.exe 20->26         started        50 Tries to harvest and steal ftp login credentials 22->50 52 Tries to harvest and steal browser information (history, passwords, etc) 22->52 28 conhost.exe 24->28         started        file8 signatures9 process10
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-09-16 03:43:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
42
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
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.

  
Delivery method
Other

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