MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 687bbb360426bced3a9f69df3a4ae321c30c2e6e8cc40bde6b6b7519a6aaab34. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 687bbb360426bced3a9f69df3a4ae321c30c2e6e8cc40bde6b6b7519a6aaab34
SHA3-384 hash: 4f1a179ee71f76915696c8c5bafb2a732bc225871079b37273a957f251ffe94143f08c2c74d5f371934b7dad47c02b3f
SHA1 hash: 5a4c43d3e639877e4da11de84a18db6bd8ed7a17
MD5 hash: 3a9f55174dde0ebbb90dbd76fd838fae
humanhash: victor-october-batman-zulu
File name:MEDIFORM SA COMPANY PROFILE.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:583'168 bytes
First seen:2020-08-19 12:49:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:3SsxEDTQoUQaRcoKZcsxdZFV0xw/VZ1cF6zg7:39xSQrcHFVcCZg
Threatray 9'430 similar samples on MalwareBazaar
TLSH EFC4F1A650A53328C46C74FAD011099346E7DC269719FAA741F437BE09BE663CF2633E
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: serve0.tacadenaplc.pw
Sending IP: 104.168.253.8
From: Mediform S.A<mediform.s.a@hotmail.com>
Subject: Re:Fw: Request For New Inquiry RFQ
Attachment: MEDIFORM SA COMPANY PROFILE.zip (contains "MEDIFORM SA COMPANY PROFILE.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
80
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/48516/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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/438002
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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
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: 271496 Sample: MEDIFORM SA COMPANY PROFILE.exe Startdate: 20/08/2020 Architecture: WINDOWS Score: 100 51 Found malware configuration 2->51 53 Yara detected AgentTesla 2->53 55 Yara detected AntiVM_3 2->55 57 5 other signatures 2->57 6 MEDIFORM SA COMPANY PROFILE.exe 3 2->6         started        10 WDjekAj.exe 2 2->10         started        12 WDjekAj.exe 3 2->12         started        process3 file4 25 C:\...\MEDIFORM SA COMPANY PROFILE.exe.log, ASCII 6->25 dropped 59 Injects a PE file into a foreign processes 6->59 14 MEDIFORM SA COMPANY PROFILE.exe 2 7 6->14         started        19 WDjekAj.exe 4 10->19         started        21 WDjekAj.exe 10->21         started        61 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->61 63 Machine Learning detection for dropped file 12->63 65 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->65 23 WDjekAj.exe 4 12->23         started        signatures5 process6 dnsIp7 31 smtp.yandex.ru 77.88.21.158, 49740, 49741, 587 YANDEXRU Russian Federation 14->31 33 smtp.yandex.com 14->33 27 C:\Users\user\AppData\Roaming\...\WDjekAj.exe, PE32 14->27 dropped 29 C:\Users\user\...\WDjekAj.exe:Zone.Identifier, ASCII 14->29 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->37 39 Moves itself to temp directory 14->39 41 Tries to steal Mail credentials (via file access) 14->41 43 Installs a global keyboard hook 14->43 35 smtp.yandex.com 19->35 45 Tries to harvest and steal ftp login credentials 19->45 47 Tries to harvest and steal browser information (history, passwords, etc) 19->47 49 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->49 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/687bbb360426bced3a9f69df3a4ae321c30c2e6e8cc40bde6b6b7519a6aaab34/
Threat name:
ByteCode-MSIL.Ransomware.TeslaCrypt
Create hunting rule
Status:
Malicious
First seen:
2020-08-19 12:51:09 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nb53wnqee26o2ou7nhptusxdehbqyltortcaxxtlnn2rtjvkvm2a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 9'420 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/200819-kxpjpapz5x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
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:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/687bbb360426bced3a9f69df3a4ae321c30c2e6e8cc40bde6b6b7519a6aaab34

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 c22f6b2a9feb3f0c6c13c6dc93aa694972f00dfb8a18bed6ace8ffd7370d1ed9

AgentTesla

Executable exe 687bbb360426bced3a9f69df3a4ae321c30c2e6e8cc40bde6b6b7519a6aaab34

(this sample)

  
Dropped by
MD5 fac0b7143d1afe97e945cd9c214349a9
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 c22f6b2a9feb3f0c6c13c6dc93aa694972f00dfb8a18bed6ace8ffd7370d1ed9
Cape
Cape
https://www.capesandbox.com/analysis/48516/

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