MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e. 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: 9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e
SHA3-384 hash: 228b237c60b6fe6659ee43724ba30446f03faecf5cefde61e34dfc54f5e0262ef5d95c63d678f8271566aab002da3f76
SHA1 hash: 1971f61d5fdaa35a7e18507fb955eebd20636cca
MD5 hash: c258988e3fea196cb60739d8ef50e56b
humanhash: avocado-bakerloo-pasta-autumn
File name:A7AiTiBy6bvlWU1.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:479'744 bytes
First seen:2020-08-14 08:20:41 UTC
Last seen:2020-08-14 09:02:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:rbQAUnhTq6+thu7F4u2zV/rZXvvrl8No:T2TSU54pzVDN+
Threatray 10'622 similar samples on MalwareBazaar
TLSH 26A4E03E12F1D51DC03BF13E9259918AB1D79C5A1498C71ABAED0CE40E282E74A67CFD
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_08142020276.zip (contains "A7AiTiBy6bvlWU1.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
68
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/45617/
Detection(s):
SecuriteInfo.com.Trojan.Siggen10.4036.23327.26552.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Using the Windows Management Instrumentation requests
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
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/428943
Signature
Binary contains a suspicious time stamp
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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: 266964 Sample: A7AiTiBy6bvlWU1.exe Startdate: 15/08/2020 Architecture: WINDOWS Score: 100 64 Found malware configuration 2->64 66 Sigma detected: Scheduled temp file as task from temp location 2->66 68 Yara detected AgentTesla 2->68 70 4 other signatures 2->70 7 A7AiTiBy6bvlWU1.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\Local\...\tmp46B9.tmp, XML 7->42 dropped 44 C:\Users\user\AppData\Roaming\ZoQtrYRvg.exe, PE32 7->44 dropped 72 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->72 74 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->74 15 A7AiTiBy6bvlWU1.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        22 A7AiTiBy6bvlWU1.exe 7->22         started        24 fWupL.exe 2 11->24         started        26 schtasks.exe 1 11->26         started        76 Injects a PE file into a foreign processes 13->76 28 schtasks.exe 13->28         started        30 fWupL.exe 13->30         started        signatures5 process6 dnsIp7 46 smtp.yandex.ru 77.88.21.158, 49731, 49739, 587 YANDEXRU Russian Federation 15->46 48 smtp.yandex.com 15->48 38 C:\Users\user\AppData\Roaming\...\fWupL.exe, PE32 15->38 dropped 40 C:\Users\user\...\fWupL.exe:Zone.Identifier, ASCII 15->40 dropped 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->52 54 Installs a global keyboard hook 15->54 32 conhost.exe 20->32         started        50 smtp.yandex.com 24->50 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->56 58 Tries to steal Mail credentials (via file access) 24->58 60 Tries to harvest and steal ftp login credentials 24->60 62 Tries to harvest and steal browser information (history, passwords, etc) 24->62 34 conhost.exe 26->34         started        36 conhost.exe 28->36         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-14 08:22:11 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tsj7xrkhhqswad2kose2xconi3s3vtnimlnbwnd7vuf5zpkn6uha._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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fa4be5c42a5ef8c05dc68b79b35275a896d1d107752b0fd10fd103146f938867
AgentTesla
+ 10'612 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200814-6qnw1rrvwe/
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/9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e

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 2dda25463cca269faecac7b85b21fd1199d1cd603abe203e3ed984986bf29ab9

AgentTesla

Executable exe 9c93fbc5473c25600f4a7489ab89cd46e5bacda862da1b347fad0bdcbd4df50e

(this sample)

  
Dropped by
MD5 fbd6d204a1e40b97d016a6fbcb212d3a
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45617/
  
Dropped by
SHA256 2dda25463cca269faecac7b85b21fd1199d1cd603abe203e3ed984986bf29ab9

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