MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1ec16ea0d0f8133dfb05368d5137b6e49d90039dddabe9bb46b3bbc5278fc26. 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: a1ec16ea0d0f8133dfb05368d5137b6e49d90039dddabe9bb46b3bbc5278fc26
SHA3-384 hash: be1bdef1d9e59ca9a705a72e3e6b3f71f69dc30755e1feda42f60ce339214c6762567faa58fc52e084e2b81b853022da
SHA1 hash: 3e8580f27bcdae7564f719110d8592a030c7c25e
MD5 hash: 0099266be4fb71dfc25be49fb34df81a
humanhash: alabama-may-minnesota-oscar
File name:Proposal catalog.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:720'384 bytes
First seen:2020-08-03 12:53:44 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:JKMuTHqTJy5hTPscZanmIoA+0gt/e+3xria1GGMKprEfpx:oMuzqdyznJIoN02e+35ia1GpKpr
Threatray 746 similar samples on MalwareBazaar
TLSH D4E4CE6C77E0962AF55A1FBE5D3650029D34E80FAC2BE38F25F6122C187A79C5C41F26
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: zmail.rfvallianz.com
Sending IP: 203.177.117.142
From: sales05@rfvallianz.com
Subject: Proposals and Order Specification (860-01113873 MIA1041216 HAWB)
Attachment: Proposal catalog.iso (contains "Proposal catalog.exe")

AgentTesla SMTP exfil server:
smtp.privateemail.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/37816/
Detection(s):
SecuriteInfo.com.Generic.mg.0099266be4fb71df.24338.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
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/407898
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
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
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256181 Sample: Proposal catalog.exe Startdate: 03/08/2020 Architecture: WINDOWS Score: 100 58 Found malware configuration 2->58 60 Sigma detected: Scheduled temp file as task from temp location 2->60 62 Yara detected AgentTesla 2->62 64 7 other signatures 2->64 7 moyJBo.exe 3 2->7         started        10 Proposal catalog.exe 7 2->10         started        13 moyJBo.exe 2->13         started        process3 file4 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->66 68 Machine Learning detection for dropped file 7->68 70 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->70 72 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->72 15 moyJBo.exe 4 7->15         started        19 moyJBo.exe 7->19         started        36 C:\Users\user\AppData\...\&startupname&.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmp6C29.tmp, XML 10->38 dropped 40 C:\...\&startupname&.exe:Zone.Identifier, ASCII 10->40 dropped 42 C:\Users\user\...\Proposal catalog.exe.log, ASCII 10->42 dropped 74 Injects a PE file into a foreign processes 10->74 21 Proposal catalog.exe 2 7 10->21         started        24 schtasks.exe 1 10->24         started        26 Proposal catalog.exe 10->26         started        28 moyJBo.exe 13->28         started        signatures5 process6 dnsIp7 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->46 48 Tries to steal Mail credentials (via file access) 15->48 50 Tries to harvest and steal ftp login credentials 15->50 52 Tries to harvest and steal browser information (history, passwords, etc) 15->52 44 smtp.privateemail.com 199.193.7.228, 49725, 49734, 49735 NAMECHEAP-NETUS United States 21->44 32 C:\Users\user\AppData\Roaming\...\moyJBo.exe, PE32 21->32 dropped 34 C:\Users\user\...\moyJBo.exe:Zone.Identifier, ASCII 21->34 dropped 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->54 56 Installs a global keyboard hook 21->56 30 conhost.exe 24->30         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a1ec16ea0d0f8133dfb05368d5137b6e49d90039dddabe9bb46b3bbc5278fc26/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-03 12:55:10 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uhwbn2qnb6athx5qknunke33nze5sabz3xnl5g5unm53yuty7qta._file
Verdict:
malicious
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d83429370b6d814b6ff67dd1736424db4e11e39ee745867f09c98f49fae4e1fc
AgentTesla
+ 736 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/200803-srl7g661va/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a1ec16ea0d0f8133dfb05368d5137b6e49d90039dddabe9bb46b3bbc5278fc26

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

iso 3954ebb09883298d14a3d3d9daafb022876c03f0b24d9fa5661ed82d39bfa16e

AgentTesla

Executable exe a1ec16ea0d0f8133dfb05368d5137b6e49d90039dddabe9bb46b3bbc5278fc26

(this sample)

  
Dropped by
MD5 4254c500f69469006a2d2426a4412070
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/37816/
  
Dropped by
SHA256 3954ebb09883298d14a3d3d9daafb022876c03f0b24d9fa5661ed82d39bfa16e

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