MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893
SHA3-384 hash: dbdbf89f6b1b4c850ade6ce246552ba0ef68b8ba407765e49fa179df045435622608d076692e3487ab7850637706fd5b
SHA1 hash: 796242f97193222604808c8c99a3855dd1efc041
MD5 hash: 32e278dfcf2e7c4dbd2d748223a0c24a
humanhash: mockingbird-river-kitten-asparagus
File name:holydami.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:774'144 bytes
First seen:2020-08-27 05:27:52 UTC
Last seen:2020-08-27 08:30:40 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 6144:tv9I21L3sf81kFBgGsMt4+yVY5L/N1XAHYtM5TLADOiMuDuPlZTV0nJNlS6M5poL:X7qHuM4+yVY5LlaHP5T8quDwkLm5i
Threatray 10'630 similar samples on MalwareBazaar
TLSH 79F4C5393EC29834E53E093104A85EC1F332B68B7A47CB1FA9CB175D9E0358B7B5654A
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.bengiamein.ga
Sending IP: 5.8.93.204
From: lillan tan<info@foy-sg.us>
Reply-To: info@foy-sg.us
Subject: Inquiry Order
Attachment: Purchase Order 3423.doc

AgentTesla payload URL:
http://77.73.69.79/opza/holydami.exe

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/51577/
Detection(s):
SecuriteInfo.com.CAP_HookExKeylogger.5396.28838.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
75 / 100
Link:
https://www.joesandbox.com/analysis/452243
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Add file from suspicious location to autostart registry
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 278481 Sample: holydami.exe Startdate: 27/08/2020 Architecture: WINDOWS Score: 75 34 Multi AV Scanner detection for dropped file 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected AgentTesla 2->38 40 4 other signatures 2->40 7 holydami.exe 7 2->7         started        10 pcalua.exe 1 1 2->10         started        12 pcalua.exe 1 2->12         started        process3 file4 26 C:\Users\user\AppData\Roaming\...\sef.exe, PE32 7->26 dropped 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 7->28 dropped 30 C:\Users\user\...\sef.exe:Zone.Identifier, ASCII 7->30 dropped 32 C:\Users\user\AppData\...\holydami.exe.log, ASCII 7->32 dropped 14 sef.exe 3 7->14         started        17 cmd.exe 1 7->17         started        process5 signatures6 44 Writes to foreign memory regions 14->44 46 Allocates memory in foreign processes 14->46 48 Injects a PE file into a foreign processes 14->48 19 AddInProcess32.exe 2 14->19         started        21 reg.exe 1 1 17->21         started        24 conhost.exe 17->24         started        process7 signatures8 42 Creates an autostart registry key pointing to binary in C:\Windows 21->42
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-27 05:29:04 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=66lqq6jo3xok4dvh7ybbxrntqfjowpwnkvc2ldgz2jcfgrjz7cjq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 10'620 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200827-e1fvye34l2/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893

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

Word file doc 564e55246cf97ae3a0a2bc23da960aa8fd8dd6f3a590e4abc8a993254eed7ea9

AgentTesla

Executable exe f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/444956/
  
Dropped by
MD5 cbca9743449323b35a7554f4d508faca
  
Dropped by
SHA256 564e55246cf97ae3a0a2bc23da960aa8fd8dd6f3a590e4abc8a993254eed7ea9
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/51577/

Comments