MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a849f1677b6addf326c029fff0d355c882ff497e23215c840dac2f1388dd9d83. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a849f1677b6addf326c029fff0d355c882ff497e23215c840dac2f1388dd9d83
SHA3-384 hash: af09c13bf50cc9afbb8e35a42569819657cd413bea822791cdab65a7bb0784c136a1d9fb55a37a30aa07c054f4e8fc0d
SHA1 hash: 0aedeaa1badcb5bc9dd9c6bab9cc11a034b1a969
MD5 hash: 690de295f3c510ace9c3e0cd2174214e
humanhash: fix-missouri-mockingbird-summer
File name:INVOICE_INV97343.PDF.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:530'432 bytes
First seen:2020-08-13 08:51:00 UTC
Last seen:2020-08-13 10:26:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:9JNKNC+ofF6ZSxI1HDe6v8UZiSS+eFND1Ubx+FvR7N7ZDBnEoTS:xX+od6ZgSDe6v8aiSS+e7DBFR7/BE5
Threatray 10'564 similar samples on MalwareBazaar
TLSH B6B422017660E02ADBB21F3CE9B1E19E56A550C79F9DCF1EB85902094C83A5F7324FA7
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: smtp-out-03.comm2000.it
Sending IP: 212.97.32.66
From: Yeşim ALBAYRAK <yesimalbayrak@albayrakbeton.com.tr>
Subject: Fwd: Official Proforma Invoice for Bank enclosed.
Attachment: INVOICE_INV97343.PDF.r24 (contains "INVOICE_INV97343.PDF.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
69
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/44985/
Detection(s):
SecuriteInfo.com.Artemis690DE295F3C5.14719.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a UDP request
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/425518
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 265319 Sample: INVOICE_INV97343.PDF.exe Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Yara detected AgentTesla 2->40 42 Sigma detected: Suspicious Double Extension 2->42 44 3 other signatures 2->44 6 IHrUFa.exe 2 2->6         started        9 INVOICE_INV97343.PDF.exe 2 2->9         started        11 IHrUFa.exe 2 2->11         started        process3 signatures4 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->46 48 Machine Learning detection for dropped file 6->48 50 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->50 13 IHrUFa.exe 2 6->13         started        17 IHrUFa.exe 6->17         started        19 IHrUFa.exe 6->19         started        52 Injects a PE file into a foreign processes 9->52 21 INVOICE_INV97343.PDF.exe 2 5 9->21         started        24 IHrUFa.exe 11->24         started        process5 dnsIp6 30 192.168.2.1 unknown unknown 13->30 32 smtp.yandex.com 13->32 54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 13->54 56 Tries to steal Mail credentials (via file access) 13->56 58 Tries to harvest and steal ftp login credentials 13->58 60 Tries to harvest and steal browser information (history, passwords, etc) 13->60 34 smtp.yandex.ru 77.88.21.158, 49728, 49737, 587 YANDEXRU Russian Federation 21->34 36 smtp.yandex.com 21->36 26 C:\Users\user\AppData\Roaming\...\IHrUFa.exe, PE32 21->26 dropped 28 C:\Users\user\...\IHrUFa.exe:Zone.Identifier, ASCII 21->28 dropped 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->62 file7 signatures8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a849f1677b6addf326c029fff0d355c882ff497e23215c840dac2f1388dd9d83/
Threat name:
Win32.Trojan.Bluteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 02:20:04 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vbe7cz33nlo7gjwafh77bu2vzcbp6sl6emqvzbanvqxrhcg5twbq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'554 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/200813-p9p6wmj3qx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.87
Link:
https://yomi.yoroi.company/submissions/a849f1677b6addf326c029fff0d355c882ff497e23215c840dac2f1388dd9d83

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 7e32887fc65318033bd6543f09805d2585e2276356c2eb1bbc6e52a966d3e403

AgentTesla

Executable exe a849f1677b6addf326c029fff0d355c882ff497e23215c840dac2f1388dd9d83

(this sample)

  
Dropped by
MD5 d52516d0c4c42733914549f319617445
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/44985/
  
Dropped by
SHA256 7e32887fc65318033bd6543f09805d2585e2276356c2eb1bbc6e52a966d3e403

Comments