MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 536f9fa4c78fa1424d77388468f0cae41898b6012aa48b605fea5e59ca573072. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 536f9fa4c78fa1424d77388468f0cae41898b6012aa48b605fea5e59ca573072
SHA3-384 hash: aeb26bfe889469c417ece8e89ffd3d2ff556cf1c4186514367031c263ebdfe589519be0be89b7472cca8fa98c0d91e8b
SHA1 hash: 8a5a6e58721b6de659d6e56bdc4cf547a8fd25bb
MD5 hash: 9113b7fb2ee10298d8611437e68b1065
humanhash: paris-december-gee-july
File name:Proforma Invoice INV9654.PDF.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:956'416 bytes
First seen:2020-08-14 08:11:42 UTC
Last seen:2020-08-14 09:02:20 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 12288:4gs1n9CR+4HhjNUh5GUKpaUGb/PJgByNJNIisxKC/8fEEy8:bsdAjHhxUhEUKdGbpgBQIilYWF
Threatray 10'566 similar samples on MalwareBazaar
TLSH 9F15ADD1B5CC87C1DD110B76D4BE79302A3B6F852A615A09A1CD732B2B7328E7D1273A
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.systemmekanik.com
Sending IP: 151.106.3.198
From: Yeşim ALBAYRAK <yesimalbayrak@albayrakbeton.com.tr>
Subject: Official Proforma Invoice for Bank enclosed To victim-email
Attachment: Proforma Invoice INV9654.PDF.r24 (contains "Proforma Invoice INV9654.PDF.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
67
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/45605/
Detection(s):
SecuriteInfo.com.generic.ml.22169.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/428909
Signature
Creates multiple autostart registry keys
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: 266946 Sample: Proforma Invoice INV9654.PDF.exe Startdate: 15/08/2020 Architecture: WINDOWS Score: 100 53 Found malware configuration 2->53 55 Yara detected AgentTesla 2->55 57 Sigma detected: Suspicious Double Extension 2->57 59 5 other signatures 2->59 6 Proforma Invoice INV9654.PDF.exe 1 5 2->6         started        10 IHrUFa.exe 2->10         started        12 mark.exe 3 2->12         started        14 2 other processes 2->14 process3 file4 39 C:\Users\user\AppData\Roaming\mark.exe, PE32 6->39 dropped 41 C:\Users\user\...\mark.exe:Zone.Identifier, ASCII 6->41 dropped 43 C:\...\Proforma Invoice INV9654.PDF.exe.log, ASCII 6->43 dropped 73 Creates multiple autostart registry keys 6->73 75 Injects a PE file into a foreign processes 6->75 16 Proforma Invoice INV9654.PDF.exe 2 5 6->16         started        21 Proforma Invoice INV9654.PDF.exe 6->21         started        77 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->77 79 Machine Learning detection for dropped file 10->79 81 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 10->81 23 IHrUFa.exe 10->23         started        25 IHrUFa.exe 10->25         started        27 IHrUFa.exe 10->27         started        29 mark.exe 2 12->29         started        31 mark.exe 14->31         started        33 IHrUFa.exe 14->33         started        signatures5 process6 dnsIp7 45 smtp.yandex.ru 77.88.21.158, 49728, 49730, 49738 YANDEXRU Russian Federation 16->45 47 smtp.yandex.com 16->47 35 C:\Users\user\AppData\Roaming\...\IHrUFa.exe, PE32 16->35 dropped 37 C:\Users\user\...\IHrUFa.exe:Zone.Identifier, ASCII 16->37 dropped 61 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->61 63 Tries to steal Mail credentials (via file access) 16->63 65 Creates multiple autostart registry keys 16->65 49 smtp.yandex.com 23->49 67 Tries to harvest and steal ftp login credentials 23->67 69 Tries to harvest and steal browser information (history, passwords, etc) 23->69 71 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->71 51 smtp.yandex.com 29->51 file8 signatures9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/536f9fa4c78fa1424d77388468f0cae41898b6012aa48b605fea5e59ca573072/
Threat name:
Win32.Trojan.Perseus
Create hunting rule
Status:
Malicious
First seen:
2020-08-14 08:13:10 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=knxz7jghr6quetlxhccgr4gk4qmjrnqbfksiwyc75jpftssxgbza._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'556 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/200814-fqsmwkle1e/
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:
1.00
Link:
https://yomi.yoroi.company/submissions/536f9fa4c78fa1424d77388468f0cae41898b6012aa48b605fea5e59ca573072

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 295d719fd1159cf7c734155ee5cf35cff77cd58e45949bbfe0e5f5ed878e673a

AgentTesla

Executable exe 536f9fa4c78fa1424d77388468f0cae41898b6012aa48b605fea5e59ca573072

(this sample)

  
Dropped by
MD5 7a02580af880a4a1c1d57b5878692a02
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45605/
  
Dropped by
SHA256 295d719fd1159cf7c734155ee5cf35cff77cd58e45949bbfe0e5f5ed878e673a

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