MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a6d44377671c37e4ef84efae15b17efbcdd03a8b5af2704e74f75126f333196f. 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
| SHA256 hash: | a6d44377671c37e4ef84efae15b17efbcdd03a8b5af2704e74f75126f333196f |
|---|---|
| SHA3-384 hash: | 9aef1ee0b06f9d0a096fedc5cc670dfda02624b0c3ed321f3055e2db9969bd2ab2e1a4ee051b574cc8cb70b93258173b |
| SHA1 hash: | 9ab6c8782bf36758b88c49942ff52d17439d464a |
| MD5 hash: | 532d75f19023a3dc1e445de0d63c8487 |
| humanhash: | video-asparagus-edward-fanta |
| File name: | Information and requested documents.exe |
| Download: | download sample |
| Signature | AgentTesla |
| File size: | 434'688 bytes |
| First seen: | 2020-08-08 08:41:42 UTC |
| Last seen: | 2020-08-10 13:49:23 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:wgrpiAtQDvzyPFtDukayAL36Ln9R8W43xEo08Wer:xQAt+ouHW0TBPzr |
| Threatray | 10'665 similar samples on MalwareBazaar |
| TLSH | 9694125813BCFBB6D9EC17FCA88D358023BD8D8AA156F7151E4631BB1C527948290BB3 |
| Reporter |  abuse_ch |
| Tags: | AgentTesla exe Hostwinds |
abuse_ch
Malspam distributing AgentTesla:HELO: hwsrv-758874.hostwindsdns.com
Sending IP: 104.168.202.239
From: Gaurav Pansari<gaurav@kredx.com>
Subject: Information and requested documents
Attachment: Information and requested documents.zip (contains "Information and requested documents.exe")
AgentTesla FTP exfil server:
ftp.hraspirations.com:21
AgentTesla FTP exfil user name:
test@hraspirations.com
Intelligence
File Origin
# of uploads :
3
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
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
Creating a file
Using the Windows Management Instrumentation requests
Forced shutdown of a system process
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
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Detection:
agenttesla
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-08-08 06:03:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
23 of 29 (79.31%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
agenttesla
Similar samples:
+ 10'655 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of SetThreadContext
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Reads data files stored by FTP clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
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
Delivery method
Distributed via e-mail attachment
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