MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 16853eb4cd97f93ef51bcad6492d6874c54e86f98009b977254decac05070fd2. 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: 16853eb4cd97f93ef51bcad6492d6874c54e86f98009b977254decac05070fd2
SHA3-384 hash: e9222f785a50d3c5c769be9093f632b12a234f0f86a96e9540d720046fc408b03ec408927c67c5307b8954baeed69b38
SHA1 hash: a7dcfee41c305f72eb1a48ff1b0aebacae346d55
MD5 hash: eb815f5ca33030272ffddd2b5a2b5b08
humanhash: mars-mike-princess-winter
File name:KRA202015840883.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:887'808 bytes
First seen:2020-08-04 11:11:37 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:rHcPgYxmOE+2Do4pPeRH89fQa5b287SrjCGLU3zKf0UsUyoEYSjLDV:IIYxPeVZl2ca87Sr+idFslfV
Threatray 10'657 similar samples on MalwareBazaar
TLSH FF15AFC1F5409D50EC294E3B4C3399924B33AC6BEF42C606349CB6596BF72966A35F83
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: admin.itax2@kra.go.ke
Reply-To: admin.itax2@kra.go.ke
Subject: Acknowledgement of Income Tax PAYE Return for Return Period 01/07/2020 to 31/07/2020
Attachment: KRA202015840883.rar (contains "KRA202015840883.exe")

AgentTesla SMTP exfil server:
mail.pkfpmes.co.ke:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
76
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/38550/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.14496.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
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.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/409064
Signature
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies the hosts 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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 256768 Sample: KRA202015840883.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Sigma detected: Scheduled temp file as task from temp location 2->45 47 6 other signatures 2->47 8 KRA202015840883.exe 5 2->8         started        process3 file4 25 C:\Users\user\AppData\...\feLVSXqyrLUUmz.exe, PE32 8->25 dropped 27 C:\...\feLVSXqyrLUUmz.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\AppData\Local\...\tmpF16D.tmp, XML 8->29 dropped 31 C:\Users\user\...\KRA202015840883.exe.log, ASCII 8->31 dropped 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->51 53 Injects a PE file into a foreign processes 8->53 12 KRA202015840883.exe 2 8->12         started        17 schtasks.exe 1 8->17         started        signatures5 process6 dnsIp7 35 pkfpmes.co.ke 181.214.31.149, 49741, 587 ASDETUKhttpwwwheficedcomGB Chile 12->35 37 mail.pkfpmes.co.ke 12->37 39 192.168.2.1 unknown unknown 12->39 33 C:\Windows\System32\drivers\etc\hosts, ASCII 12->33 dropped 55 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->55 57 Tries to steal Mail credentials (via file access) 12->57 59 Tries to harvest and steal ftp login credentials 12->59 61 2 other signatures 12->61 19 reg.exe 1 12->19         started        21 conhost.exe 17->21         started        file8 signatures9 process10 process11 23 conhost.exe 19->23         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/16853eb4cd97f93ef51bcad6492d6874c54e86f98009b977254decac05070fd2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 11:13:10 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=c2ct5ngns74t55i3zlleslliotcu5bxzqae3s5zfjxwkybihb7ja._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'647 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200804-yjf6nbxl1a/
Behaviour
Modifies registry key
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
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/16853eb4cd97f93ef51bcad6492d6874c54e86f98009b977254decac05070fd2

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 8b725056d381d4fcdf425ba985e32e6ee054c7e9fdd7b649d96bc30117f5d8dd

AgentTesla

Executable exe 16853eb4cd97f93ef51bcad6492d6874c54e86f98009b977254decac05070fd2

(this sample)

  
Dropped by
MD5 4d31a4f27175b1b7286c12fdc1c856b2
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38550/
  
Dropped by
SHA256 8b725056d381d4fcdf425ba985e32e6ee054c7e9fdd7b649d96bc30117f5d8dd

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