MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1bfc107e597a3f4780a8607d7c5f033048cb59c50a5fdbe388c10d839efd8692. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments

SHA256 hash: 1bfc107e597a3f4780a8607d7c5f033048cb59c50a5fdbe388c10d839efd8692
SHA3-384 hash: d86f1e3200e3ff5e96762fca0b90f80276ab5639b8f05069b665fac2c4ca3dfd121f996d24a8bd650b96a34bc4d9f0d5
SHA1 hash: dafdecdb1134745141d26a3c8c37c37caa2ebf46
MD5 hash: 4ab723d80b63f5c3c867cc51f33f073b
humanhash: spring-charlie-king-pizza
File name:TTSOUzH8w4VG2020.exe
Download: download sample
Signature AgentTesla
File size:1'080'320 bytes
First seen:2020-08-31 13:09:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:i8JCEpX2lQK08adpWrnVxq3etpDBqeQ0BTZPKrxSwFy6MwlTdh/yGtU9uHvPk/+t:i6Oa7Cn/q3CpU0/yJzLBLtEuHbn68ac
Threatray 9'430 similar samples on MalwareBazaar
TLSH 0835BE9FD30A97ADCCD87E78E45040D892B12AC1EA25D088DDCF7099E4E51FC73A865B
Reporter abuse_ch
Tags:AgentTesla exe Hostwinds


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: hwsrv-768939.hostwindsdns.com
Sending IP: 104.168.236.146
From: info-nadezhda.pw <info@nadezhda.pw>
Subject: Sign and return to us 31/20/08 Due DEBIT NOTE 181121
Attachment: TTSOUzH1811212020.img (contains "TTSOUzH8w4VG2020.exe")

AgentTesla SMTP exfil server:
mail.gascuenca.es:587

Intelligence


File Origin
# of uploads :
1
# of downloads :
89
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
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
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 domain / URL
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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2020-08-31 04:58:11 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  2/5
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 1bfc107e597a3f4780a8607d7c5f033048cb59c50a5fdbe388c10d839efd8692

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments