MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9b35a1eab3bddb51f9571b67a8d679c7db0af207a938f428870e10eae43e00f2. 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: 9b35a1eab3bddb51f9571b67a8d679c7db0af207a938f428870e10eae43e00f2
SHA3-384 hash: 264d5e171cf6a9cd720d9109697da862bbabb41b0d7c14bae881dd4bb134cdea8e72c83bdd53ce14d7ca79fae770448f
SHA1 hash: 5d27745f5395c19e6101450999defa721baa8499
MD5 hash: 81f231d6a9432096999f0cd7e4ec0d72
humanhash: idaho-batman-jersey-hawaii
File name:BoN1F4IwB4ATFo1.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:442'880 bytes
First seen:2020-08-16 14:04:53 UTC
Last seen:2020-08-16 15:07:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:QfDknE4bCUIUKVJVH9z1AtXmnkAoIhwoiF4EcmZHAFaxmVmie9bngP:FNIxYtXmnkp5F4EcmZHAFaxmVmie9bnQ
Threatray 10'612 similar samples on MalwareBazaar
TLSH 0894016C31D0B0B6F7F85FF5A8342D1803B6BB16082BAE0F699053F083E65E4AD5595B
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: server118.firstdns.net
Sending IP: 87.236.211.104
From: Danielly Machado<info@vortex-intl.cf>
Subject: New order #7310
Attachment: Doc_160820202202.zip (contains "BoN1F4IwB4ATFo1.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
87
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/46485/
Detection(s):
SecuriteInfo.com.Generic.mg.81f231d6a9432096.13307.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/432291
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 267927 Sample: BoN1F4IwB4ATFo1.exe Startdate: 16/08/2020 Architecture: WINDOWS Score: 100 70 Found malware configuration 2->70 72 Sigma detected: Scheduled temp file as task from temp location 2->72 74 Yara detected AgentTesla 2->74 76 5 other signatures 2->76 7 BoN1F4IwB4ATFo1.exe 7 2->7         started        11 fWupL.exe 5 2->11         started        13 fWupL.exe 2->13         started        process3 file4 42 C:\Users\user\AppData\...\omaqhCEqzT.exe, PE32 7->42 dropped 44 C:\Users\...\omaqhCEqzT.exe:Zone.Identifier, ASCII 7->44 dropped 46 C:\Users\user\AppData\Local\...\tmpE7DF.tmp, XML 7->46 dropped 48 C:\Users\user\...\BoN1F4IwB4ATFo1.exe.log, ASCII 7->48 dropped 78 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->78 80 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->80 15 BoN1F4IwB4ATFo1.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        82 Machine Learning detection for dropped file 11->82 22 fWupL.exe 2 11->22         started        24 schtasks.exe 1 11->24         started        26 fWupL.exe 11->26         started        28 schtasks.exe 13->28         started        30 fWupL.exe 13->30         started        signatures5 process6 dnsIp7 50 smtp.yandex.ru 77.88.21.158, 49748, 49749, 587 YANDEXRU Russian Federation 15->50 52 192.168.2.1 unknown unknown 15->52 54 smtp.yandex.com 15->54 38 C:\Users\user\AppData\Roaming\...\fWupL.exe, PE32 15->38 dropped 40 C:\Users\user\...\fWupL.exe:Zone.Identifier, ASCII 15->40 dropped 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->58 60 Installs a global keyboard hook 15->60 32 conhost.exe 20->32         started        56 smtp.yandex.com 22->56 62 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->62 64 Tries to steal Mail credentials (via file access) 22->64 66 Tries to harvest and steal ftp login credentials 22->66 68 Tries to harvest and steal browser information (history, passwords, etc) 22->68 34 conhost.exe 24->34         started        36 conhost.exe 28->36         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9b35a1eab3bddb51f9571b67a8d679c7db0af207a938f428870e10eae43e00f2/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2020-08-16 13:21:19 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tm22d2vtxxnvd6kxdnt2rvtzy7nqv4qhve4pikehbyiovzb6adza._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'602 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200816-d4rxzxe4r6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
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/9b35a1eab3bddb51f9571b67a8d679c7db0af207a938f428870e10eae43e00f2

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

zip 83fedf68307379d8bf393a4abbbc53d07567706e11645d4ffdda64a9d625d78d

AgentTesla

Executable exe 9b35a1eab3bddb51f9571b67a8d679c7db0af207a938f428870e10eae43e00f2

(this sample)

  
Dropped by
MD5 c46a24956267466e5dfc8f5380430cde
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46485/
  
Dropped by
SHA256 83fedf68307379d8bf393a4abbbc53d07567706e11645d4ffdda64a9d625d78d

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