MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f. 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: 41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f
SHA3-384 hash: f2a1474ae19951ae9167ad8811ba78ef53cd2077e59664b283d30a8942db73fb6c8ac399a6aec6422f9e118d5f488cc3
SHA1 hash: 55861e28d4b41ae2c9ecdbdbc90dd866f87b8005
MD5 hash: 40464324d8f44be31215b439cd3c9e9b
humanhash: kansas-georgia-west-low
File name:MT PEGAS EPDA CALCULATION_pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'077'248 bytes
First seen:2020-08-04 07:38:09 UTC
Last seen:2020-08-04 09:09:15 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:e8HcPgYxmOE+2Do4pPeRH89fAmPgkOqAjPzfQh3SeoRLWoPuc61CDVW3Yexl4jUv:eRIYxPeVZlfhOqAoRsRatc60VE
Threatray 10'637 similar samples on MalwareBazaar
TLSH DD359E456D98EF14C86D483D4C324A858A33A82BDF678702BC6FFA19D7779C23E15E42
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.thaipolycons.co.th
Sending IP: 58.137.61.220
From: "ops" <info@directfuelmarine.com>
Subject: RE: M/T PEGAS, EPDA CALCULATION
Attachment: MT PEGAS EPDA CALCULATION_pdf.rar (contains "MT PEGAS EPDA CALCULATION_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:
n/a
Link:
https://www.capesandbox.com/analysis/38298/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.10900.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/408809
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
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256650 Sample: MT PEGAS EPDA CALCULATION_pdf.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Yara detected AgentTesla 2->41 43 Yara detected AntiVM_3 2->43 45 5 other signatures 2->45 6 WNRUXJ.exe 1 2->6         started        9 MT PEGAS EPDA CALCULATION_pdf.exe 1 2->9         started        12 WNRUXJ.exe 2->12         started        process3 file4 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->47 49 Machine Learning detection for dropped file 6->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->51 14 WNRUXJ.exe 2 6->14         started        18 WNRUXJ.exe 6->18         started        29 C:\...\MT PEGAS EPDA CALCULATION_pdf.exe.log, ASCII 9->29 dropped 53 Injects a PE file into a foreign processes 9->53 20 MT PEGAS EPDA CALCULATION_pdf.exe 2 5 9->20         started        23 WNRUXJ.exe 2 12->23         started        signatures5 process6 dnsIp7 31 192.168.2.1 unknown unknown 14->31 33 smtp.yandex.com 14->33 55 Tries to harvest and steal ftp login credentials 14->55 57 Tries to harvest and steal browser information (history, passwords, etc) 14->57 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->59 35 smtp.yandex.ru 77.88.21.158, 49749, 49751, 587 YANDEXRU Russian Federation 20->35 37 smtp.yandex.com 20->37 25 C:\Users\user\AppData\Roaming\...\WNRUXJ.exe, PE32 20->25 dropped 27 C:\Users\user\...\WNRUXJ.exe:Zone.Identifier, ASCII 20->27 dropped 61 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->61 63 Moves itself to temp directory 20->63 65 Tries to steal Mail credentials (via file access) 20->65 67 Installs a global keyboard hook 20->67 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 07:40:08 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ie2v6jihyr35kykqvvx2zl6soeqobphla3eqll4josbenuzbfkpq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'627 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/200804-xp85rcgzz2/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Program crash
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/41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f

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 217a388c490ef870c59bb584f00c6c8ef4b9c31df84d44f31834ffb3fb50442f

AgentTesla

Executable exe 41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f

(this sample)

  
Dropped by
MD5 ba48d96232581992f3476a93de7a7750
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38298/
  
Dropped by
SHA256 217a388c490ef870c59bb584f00c6c8ef4b9c31df84d44f31834ffb3fb50442f

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