MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8ec5237b0bbe2d7428c7c58b4a7c76f6356a8579d3f2547dcc238b32a5a1669. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8ec5237b0bbe2d7428c7c58b4a7c76f6356a8579d3f2547dcc238b32a5a1669
SHA3-384 hash: 82535cee3ab06dcf9278adad9b30d40e67d2bfa1e5d0ee2b9a1e4b7c7bce2363c14090748d163e0ad478886ebc41772c
SHA1 hash: 5ac780660eaa4b61dd57c51a5589d66af88b7680
MD5 hash: 7bdcda5cef8a47b296523f82f8832212
humanhash: avocado-fruit-artist-nevada
File name:doc37281.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:485'376 bytes
First seen:2020-06-03 08:21:39 UTC
Last seen:2020-06-03 09:48:38 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:MA0TQWWgaPVEY5Vwtd+UMUkf+iRDbjODj/L9IU:KMOaGYPId+/UkmiRHj4RIU
Threatray 10'622 similar samples on MalwareBazaar
TLSH ACA4024833799D93D67D44F5D0B2520643FA92A919E7F3C98ECE25E622D6FF00260E87
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: servers.com
Sending IP: 103.99.1.173
From: Christian Zeiler<secureserver@servers.com>
Subject: RE: SIGNED INVOICE
Attachment: doc37281.rar (contains "doc37281.exe")

AgentTesla SMTP exfil server:
mail.microtechlab.in:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
56
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-06-03 10:18:44 UTC
AV detection:
18 of 31 (58.06%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xdwfen5qxprnoqumprmljj6hn5rvnkcxtu7skr64yi4lgks2czuq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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875791527ba2cb72c160068776d6ad6b802f46d897c73aade57d626c5d7690ab
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b0fed572bd0490b889b0d98770ba516a449753b89760cdbd2433c52290c3fd77
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c133315365e9f0824d0783e78b9cb01d54aba4067c73cb148ea795819b49825c
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dd106cd0751eee604ab0bf2e0a5b89fd86a872aaf2b707161cd753d316652ffc
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e90a2fa16211a100579e02c61747a1203a7dd71812782cc94eaa1aa70ef0e76a
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f8a9cff1731c41923b7c3abab09ea49d0b28e5e1e5fc7bf1fb03bcd43745d953
AgentTesla
+ 10'612 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla evasion keylogger persistence rezer0 spyware stealer trojan
Link:
https://tria.ge/reports/201109-z8sln71wds/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Modifies service
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
Disables Task Manager via registry modification
Drops file in Drivers directory
AgentTesla Payload
rezer0
ServiceHost packer
AgentTesla
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
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

rar d6763692670aefdbeaf078f96827fd2218dab49654fc8d38d8c71ca6882cf262

AgentTesla

Executable exe b8ec5237b0bbe2d7428c7c58b4a7c76f6356a8579d3f2547dcc238b32a5a1669

(this sample)

  
Dropped by
MD5 08cc7153c471e3818ff9dfb45ffbb1b4
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 d6763692670aefdbeaf078f96827fd2218dab49654fc8d38d8c71ca6882cf262

Comments