MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51bb86182c244f545a93d928cfdae895ebbc701fffa497c49cb0a9411cfb407a. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51bb86182c244f545a93d928cfdae895ebbc701fffa497c49cb0a9411cfb407a
SHA3-384 hash: f320462867435687d45f871b6a961f5172ee0c34baf4581409aab1a82770f4cecfad6cd79d9c2ccb6e2d75b32c54cb2c
SHA1 hash: 6c1a1139a38e46083cf65d5b604e09c37914188d
MD5 hash: ea18e4482c7aca793af40a368f61dc0e
humanhash: island-friend-december-bluebird
File name:naieM9AwBdZzZ79.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:479'744 bytes
First seen:2020-08-17 17:37:23 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:ln4EcmZHAFaxmVmie9bngP6IfzvMWjIWpFW15kECXRV/QBjdIYvpHRzD6ab:ln4EcmZHAFaxmVmie9bngPt1EjqEC/Qt
Threatray 10'658 similar samples on MalwareBazaar
TLSH 34A48A4A38D0E3DED5E64FB958149C1677FA2F2A051A990FCC6B39E673D8BC1BD20052
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: WIN-FO3OG88R8D7
Sending IP: 139.64.247.208
From: Cara Cao <ott0147@yahoo.com>
Subject: Re: Quotation request
Attachment: RFQ.zip (contains "naieM9AwBdZzZ79.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/47214/
Detection(s):
SecuriteInfo.com.Trojan.Inject3.51242.10681.22717.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/434354
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 269562 Sample: naieM9AwBdZzZ79.exe Startdate: 18/08/2020 Architecture: WINDOWS Score: 100 55 Found malware configuration 2->55 57 Yara detected AgentTesla 2->57 59 Yara detected AntiVM_3 2->59 61 2 other signatures 2->61 6 naieM9AwBdZzZ79.exe 3 2->6         started        10 MyApps.exe 3 2->10         started        12 MyApps.exe 2 2->12         started        process3 file4 25 C:\Users\user\...\naieM9AwBdZzZ79.exe.log, ASCII 6->25 dropped 63 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->63 65 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->65 67 Injects a PE file into a foreign processes 6->67 69 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 6->69 14 naieM9AwBdZzZ79.exe 2 7 6->14         started        19 naieM9AwBdZzZ79.exe 6->19         started        71 Machine Learning detection for dropped file 10->71 21 MyApps.exe 4 10->21         started        23 MyApps.exe 4 12->23         started        signatures5 process6 dnsIp7 31 smtp.loudprofesslonal.com 14->31 33 us2.smtp.mailhostbox.com 208.91.199.225, 25, 49733, 49747 PUBLIC-DOMAIN-REGISTRYUS United States 14->33 35 192.168.2.1 unknown unknown 14->35 27 C:\Users\user\AppData\Roaming\...\MyApps.exe, PE32 14->27 dropped 29 C:\Users\user\...\MyApps.exe:Zone.Identifier, ASCII 14->29 dropped 41 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->41 43 Moves itself to temp directory 14->43 45 Tries to steal Mail credentials (via file access) 14->45 47 Installs a global keyboard hook 14->47 37 smtp.loudprofesslonal.com 21->37 39 208.91.199.223, 25, 49746 PUBLIC-DOMAIN-REGISTRYUS United States 21->39 49 Tries to harvest and steal ftp login credentials 21->49 51 Tries to harvest and steal browser information (history, passwords, etc) 21->51 53 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->53 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/51bb86182c244f545a93d928cfdae895ebbc701fffa497c49cb0a9411cfb407a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 17:39:07 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kg5ymgbmerhviwut3eum7wxisxv3y4a776sjpre4wcuuchh3ib5a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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ccac5881ca9beeead13f5c7f05b289e9d3013a9eea7ce8a087dcb0aade9a60e2
AgentTesla
+ 10'648 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200817-cwz1t8y18j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/51bb86182c244f545a93d928cfdae895ebbc701fffa497c49cb0a9411cfb407a

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
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
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

zip 8439cb5f700b2738dd55bc6d5f572ff4598c4cc73f4fde910f605b52fad24cac

AgentTesla

Executable exe 51bb86182c244f545a93d928cfdae895ebbc701fffa497c49cb0a9411cfb407a

(this sample)

  
Dropped by
MD5 2ca1722ad3db032488dd7021d57269f0
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/47214/
  
Dropped by
SHA256 8439cb5f700b2738dd55bc6d5f572ff4598c4cc73f4fde910f605b52fad24cac

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