MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc. 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: 5


Intelligence 5 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc
SHA3-384 hash: 6ca22a9caef009050191114d72c23f8dba83c6f6f435a2b78dd99a9d2ada8f06b17567bdd973847b20abb96843f21e8e
SHA1 hash: f2216e02ce43d07bc6bc8b7fb01461f1d9d1aa91
MD5 hash: e50b58922768f36a719aa5e91c086c06
humanhash: lactose-jupiter-oven-muppet
File name:new purchase order.rar.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:536'064 bytes
First seen:2020-05-06 18:57:03 UTC
Last seen:2020-05-06 20:20:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:UxofKbJ83yc4AwP3orW5mhUJ506Rh8HzM7Ba01pD5wXr5xCq:UxTbJO0mhUNRXvhor5
Threatray 10'793 similar samples on MalwareBazaar
TLSH E7B4CFDD726072EECC5BC072DEA85CA8AA5074BB831F5113A56756ADEE0C987CF140F2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: outlook.com
Sending IP: 103.99.1.148
From: Natalie Thomas<sales.gmbh@outlook.com>
Subject: RE:Order by Petersen Matex Trading GmbH 
Attachment: new purchase order.rar.zip (contains "new purchase order.rar.exe")

AgentTesla SMTP exfil server:
mail.villanika.gr:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.hc.23653.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-05-06 18:45:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
26 of 31 (83.87%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=utjqqwshx4g2j6svpymn4gn23j2gm7iovi64vfmzsc4wefn3exga._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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67819aacac4994b55659a8f7924ec0384e667ee74fe5b431a731ac5baf69448c
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92891933f5cd5e261f775149ca28b09ac1470b28a5d42d533ab5ed1712c18229
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b69b060cf9fec8a233ad129cc75eaaa1c439ba29dd5256a90df085ff34c47ee9
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e12e8d3c045eaf7bcf729f25e39ed21114088534fef748acb3c8e0d2423b45bc
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e651957af4c527f8a23f8c3094232c887e2a433974ab54e48e2519e8361809a6
AgentTesla
+ 10'783 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla coreentity evasion keylogger persistence rezer0 spyware stealer trojan
Link:
https://tria.ge/reports/201109-5bejbj3myx/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Modifies service
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
Disables Task Manager via registry modification
Drops file in Drivers directory
AgentTesla Payload
rezer0
ServiceHost packer
AgentTesla
CoreEntity .NET Packer
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
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

zip d4803c82bdc773474dda976fa30bc7fbbad2a6192af850c71602419dd500368b

AgentTesla

Executable exe a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc

(this sample)

  
Dropped by
MD5 68a0f1c0fbbdc5014c8814f20b0d0784
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 d4803c82bdc773474dda976fa30bc7fbbad2a6192af850c71602419dd500368b

Comments