MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 796598c13b6566413e4a282b014303a83a028c85ce157576483309680447eea4. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments

SHA256 hash: 796598c13b6566413e4a282b014303a83a028c85ce157576483309680447eea4
SHA3-384 hash: 9bde9935d434daa11f8f31d11b7f63e6a20aa5c5f3b99ab2df240bd250947c8a0d806d24767c374a9e7ee2bfc7f65d57
SHA1 hash: 904ae7ab437d04056b794b0ac21e529ce7435535
MD5 hash: 7ec78025a236156ff5da3aa3b6e00f9e
humanhash: eighteen-north-utah-beer
File name:BxY1c5v9Ly1o8oc.exe
Download: download sample
Signature AgentTesla
File size:779'264 bytes
First seen:2020-09-10 00:03:54 UTC
Last seen:2020-09-10 00:49:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'636 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:Ewf8yXWKL4JSv1O6Sns4hkT66kS9jnrJVp7a4:Ewf8nu4anSnsq66aBJV7
Threatray 10'572 similar samples on MalwareBazaar
TLSH 3BF4062209FCAA43EB2DD2BD03163331AAD16AC9E27FD3DB1EF4607645B1B854D18497
Reporter FORMALITYDE
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
127
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Found malware configuration
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
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 AntiVM_3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 283767 Sample: BxY1c5v9Ly1o8oc.exe Startdate: 10/09/2020 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 8 other signatures 2->41 7 BxY1c5v9Ly1o8oc.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\...\iRGgKgiJYYBQ.exe, PE32 7->23 dropped 25 C:\Users\...\iRGgKgiJYYBQ.exe:Zone.Identifier, ASCII 7->25 dropped 27 C:\Users\user\AppData\Local\...\tmp8F21.tmp, XML 7->27 dropped 29 C:\Users\user\...\BxY1c5v9Ly1o8oc.exe.log, ASCII 7->29 dropped 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->43 45 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->45 47 Injects a PE file into a foreign processes 7->47 11 BxY1c5v9Ly1o8oc.exe 2 7->11         started        15 schtasks.exe 1 7->15         started        17 BxY1c5v9Ly1o8oc.exe 7->17         started        19 BxY1c5v9Ly1o8oc.exe 7->19         started        signatures5 process6 dnsIp7 31 smtp.desmaindian.com 11->31 33 us2.smtp.mailhostbox.com 208.91.198.143, 49727, 587 PUBLIC-DOMAIN-REGISTRYUS United States 11->33 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->49 51 Tries to steal Mail credentials (via file access) 11->51 53 Tries to harvest and steal ftp login credentials 11->53 55 Tries to harvest and steal browser information (history, passwords, etc) 11->55 21 conhost.exe 15->21         started        signatures8 process9
Threat name:
ByteCode-MSIL.Trojan.NanoBot
Status:
Malicious
First seen:
2020-09-10 00:05:06 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
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.

Malspam

AgentTesla

Executable exe 796598c13b6566413e4a282b014303a83a028c85ce157576483309680447eea4

(this sample)

  
Delivery method
Distributed via e-mail attachment

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