MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d586c82d5848fbb3bc04edb076ca3bef09ed04006357f15fca5a131a73f8286. 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: 8d586c82d5848fbb3bc04edb076ca3bef09ed04006357f15fca5a131a73f8286
SHA3-384 hash: a7ce2e5786da3915ae3f692249bc634bd1bf7a7c74af713de3b145367f31afa5eec36213378792ac2faa3a6f850e9b6d
SHA1 hash: 19620d7189a069f62b38ad35479f30aa87716767
MD5 hash: a5be208c46915393d1d2a1b90fb734ab
humanhash: hot-blue-oregon-golf
File name:PO#12408.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:442'880 bytes
First seen:2020-08-05 09:19:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:KCCYxr9dABCcWY/F5aQZicjUnPpgwBSOJq02MBweBsOT9TrwVnmg80PnlWFfeTkl:KCCSdAf/BiLPaLQqiBwS9m80vAeTOd
Threatray 10'627 similar samples on MalwareBazaar
TLSH 4C94F00D32A0991EF2795E3F8C7004839D22F44FEE65D24B2AB62139457E58CBE75F62
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: emirates.net.ae
Sending IP: 37.49.230.200
From: Arun James <houbylaw@emirates.net.ae>
Subject: Purchase Order
Attachment: PO12408.Z (contains "PO#12408.exe")

AgentTesla SMTP exfil server:
mail.transfastc.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
65
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39322/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Moving of the original file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410780
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)
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
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: 257706 Sample: PO#12408.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Yara detected AgentTesla 2->51 53 Yara detected AntiVM_3 2->53 55 3 other signatures 2->55 6 PO#12408.exe 1 2->6         started        10 YYtJku.exe 1 2->10         started        12 YYtJku.exe 2->12         started        process3 file4 27 C:\Users\user\AppData\...\PO#12408.exe.log, ASCII 6->27 dropped 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->57 59 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->59 61 Injects a PE file into a foreign processes 6->61 63 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 6->63 14 PO#12408.exe 2 5 6->14         started        19 PO#12408.exe 6->19         started        21 PO#12408.exe 6->21         started        65 Machine Learning detection for dropped file 10->65 23 YYtJku.exe 2 10->23         started        25 YYtJku.exe 2 12->25         started        signatures5 process6 dnsIp7 33 mail.transfastc.com 108.167.160.43, 49737, 49738, 587 UNIFIEDLAYER-AS-1US United States 14->33 35 192.168.2.1 unknown unknown 14->35 29 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 14->29 dropped 31 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 14->31 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->37 39 Moves itself to temp directory 14->39 41 Tries to steal Mail credentials (via file access) 14->41 43 Tries to harvest and steal ftp login credentials 23->43 45 Tries to harvest and steal browser information (history, passwords, etc) 23->45 47 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->47 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8d586c82d5848fbb3bc04edb076ca3bef09ed04006357f15fca5a131a73f8286/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 06:37:59 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rvmgzawvqsh3wo6aj3nqo3fdx3yj5ucaay2x6fp4uwqtdjz7qkda._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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e8f9ccab47a8ec10861607e8de21c6617cd36e4eefbffe90144f357f3566657d
AgentTesla
+ 10'617 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/200805-cbj5w8jfe2/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8d586c82d5848fbb3bc04edb076ca3bef09ed04006357f15fca5a131a73f8286

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

z ae4925b914ab46e06b64a33fdfefcfc357d3cba73c955e529e24072546e40695

AgentTesla

Executable exe 8d586c82d5848fbb3bc04edb076ca3bef09ed04006357f15fca5a131a73f8286

(this sample)

  
Dropped by
MD5 2a167553e9b124c4a49cf564ca34da9b
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 ae4925b914ab46e06b64a33fdfefcfc357d3cba73c955e529e24072546e40695
Cape
Cape
https://www.capesandbox.com/analysis/39322/

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