MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d273742dfb9bfb21dd4768d2d41b6cd6f759615ac438906bcec84b183dfce621. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d273742dfb9bfb21dd4768d2d41b6cd6f759615ac438906bcec84b183dfce621
SHA3-384 hash: e076c7414e52f81ca63706412907f1b5bccf8cca819a143f8ac063a3966ca42491b724626f2cf4b489b270d8e077be4d
SHA1 hash: e9ab940a9bc95a5429f705c57709838ae8e9a4a5
MD5 hash: 8d84ea77697224f6ad5bddc567827a57
humanhash: fanta-golf-montana-georgia
File name:ZwjSavgLyKFm6Oz.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:791'040 bytes
First seen:2020-08-28 06:36:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Gpgdsebrm4wSxzU051PSkN5eGXdYJMChztsPLhGLhu28hHclenCt2FXbz/4R:Ug6ebfwSJU0DSA5eFkLhGLhujhYUr7M
Threatray 9'774 similar samples on MalwareBazaar
TLSH 10F4F142AB48C204DCBD1BB4F42DADF0055B7DA6E875F15F2E4EBD6832B32D2193254A
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail0.manaluminum.us
Sending IP: 192.236.233.127
From: sales1.westerngolftrads@hotmail.com
Reply-To: sales1.westerngolftrads@hotmail.com
Subject: INQUIRY
Attachment: QUOTATION.GZ.rar (contains "ZwjSavgLyKFm6Oz.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/52207/
Detection(s):
SecuriteInfo.com.W32.Trojan-7.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
Moving of the original file
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/453303
Signature
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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: 279025 Sample: ZwjSavgLyKFm6Oz.exe Startdate: 28/08/2020 Architecture: WINDOWS Score: 100 64 Found malware configuration 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 Sigma detected: Scheduled temp file as task from temp location 2->68 70 7 other signatures 2->70 7 ZwjSavgLyKFm6Oz.exe 7 2->7         started        11 sKBzmRo.exe 5 2->11         started        13 sKBzmRo.exe 2 2->13         started        process3 file4 34 C:\Users\user\AppData\Roaming\sUodnXaU.exe, PE32 7->34 dropped 36 C:\Users\...\sUodnXaU.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\...\tmpC446.tmp, XML 7->38 dropped 40 C:\Users\user\...\ZwjSavgLyKFm6Oz.exe.log, ASCII 7->40 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 76 Injects a PE file into a foreign processes 7->76 15 ZwjSavgLyKFm6Oz.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        78 Multi AV Scanner detection for dropped file 11->78 80 Machine Learning detection for dropped file 11->80 22 sKBzmRo.exe 11->22         started        24 schtasks.exe 11->24         started        signatures5 process6 dnsIp7 42 smtp.yandex.ru 77.88.21.158, 49738, 49744, 587 YANDEXRU Russian Federation 15->42 44 smtp.yandex.com 15->44 30 C:\Users\user\AppData\Roaming\...\sKBzmRo.exe, PE32 15->30 dropped 32 C:\Users\user\...\sKBzmRo.exe:Zone.Identifier, ASCII 15->32 dropped 50 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->50 52 Moves itself to temp directory 15->52 54 Tries to steal Mail credentials (via file access) 15->54 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->56 26 conhost.exe 20->26         started        46 192.168.2.1 unknown unknown 22->46 48 smtp.yandex.com 22->48 58 Tries to harvest and steal ftp login credentials 22->58 60 Tries to harvest and steal browser information (history, passwords, etc) 22->60 62 Installs a global keyboard hook 22->62 28 conhost.exe 24->28         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d273742dfb9bfb21dd4768d2d41b6cd6f759615ac438906bcec84b183dfce621/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-28 06:38:06 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2jzxilp3tp5sdxkhndjnig3m233vsyk2yq4ja26ozbfrqpp44yqq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 9'764 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/200828-v1ylh1r6e2/
Behaviour
Creates scheduled task(s)
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:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/d273742dfb9bfb21dd4768d2d41b6cd6f759615ac438906bcec84b183dfce621

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 6d481692a9ba50ec2da2635cacd6e9a2a3e67f9bc2ecb4d855efdc898b473602

AgentTesla

Executable exe d273742dfb9bfb21dd4768d2d41b6cd6f759615ac438906bcec84b183dfce621

(this sample)

  
Dropped by
MD5 db46a3ad78f1074cb5e92c3c2e6514bc
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/52207/
  
Dropped by
SHA256 6d481692a9ba50ec2da2635cacd6e9a2a3e67f9bc2ecb4d855efdc898b473602

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