MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a020281d5b475372fcf518c8f4a6b913b3a855c458996a9d7b525062ad736ec. 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: 4


Intelligence 4 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a020281d5b475372fcf518c8f4a6b913b3a855c458996a9d7b525062ad736ec
SHA3-384 hash: 46e0545f6cfb8227fb85e29f51057a537d8ab1f41cf1a865bb087e5549d3a1e97a5bdefe5458b22dc9be93d2e6462d47
SHA1 hash: 37b0430e73eec49c3048722289b7e1aa2d3c3afb
MD5 hash: 40bcee2677fb71dac76ecb01f8e00b5b
humanhash: cola-alanine-comet-iowa
File name:Xeros_ Covid.19_ urgent_information_letter.xlxs.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:450'048 bytes
First seen:2020-04-20 14:37:20 UTC
Last seen:2020-04-20 15:43:05 UTC
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:QZ+e3jB4YTznVbkuBXW+7HIHYRf8uTj3dnjYlUl:I94YTzG8LI4RfLTNYGl
Threatray 11'244 similar samples on MalwareBazaar
TLSH 09A402857A1C9A47DEBE08F69092204017F59A2EE55AE7F52FC4E0FB89C37CA08015E7
Reporter abuse_ch
Tags:AgentTesla COVID-19 exe


Avatar
abuse_ch
COVID-19 themed malspam distributing AgentTesla:

HELO: linux887.grserver.gr
Sending IP: 185.4.133.240
From: WORLD HEALTH ORGANIZATION (WHO) <healthcaresupport@who.int>
Subject: URGENT INFORMATION LETTER:COVID-19 OUTBREAK/ NEW VACCINES/SAFETY MEASURES
Attachment: Xeros_ Covid.19_ urgent_information_letter.xlxs.iso (contains "Xeros_ Covid.19_ urgent_information_letter.xlxs.exe")

AgentTesla SMTP exfil server:
smtp.yandex.com:587 (77.88.21.158)

Intelligence

File Origin
# of uploads :
2
# of downloads :
98
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.PWS.Siggen2.47646.14754.25554.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Agensla
Create hunting rule
Status:
Malicious
First seen:
2020-04-20 04:43:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
26 of 31 (83.87%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ribafaovwr2tol6pkggi6stlse5tvbk4iweznkoxwusqmkwxg3wa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 11'234 additional samples on MalwareBazaar
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_g2
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann@fkie.fraunhofer.de>

File information

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

Malspam

AgentTesla

iso 06d6781070329e201caed6140b0c81fd1f4555c36a03cfb40f7b3812a877c0c3

AgentTesla

Executable exe 8a020281d5b475372fcf518c8f4a6b913b3a855c458996a9d7b525062ad736ec

(this sample)

  
Dropped by
MD5 0fba828e41a6b4910a73ad1bd7e550b1
  
Dropped by
SHA256 06d6781070329e201caed6140b0c81fd1f4555c36a03cfb40f7b3812a877c0c3
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 56d85a979245364288d1814d5c45a8acf653c5da47d2eefe8f60f7b7de194e9c
  
Dropped by
MD5 4986e945acf2f63ad7f5da3a9e75d8f1

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments