MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 872aaa3d5b005b0ad86226166438b998a20f3e1619b1bd2de4ab2f60398c809a. 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: 872aaa3d5b005b0ad86226166438b998a20f3e1619b1bd2de4ab2f60398c809a
SHA3-384 hash: d37491f524819cf6b54479cfdcaf5cb5c269f5248eed3485a7bf5c827db60046b3f0b288ad38f6c012cf6c8bd4087876
SHA1 hash: 7715e94a6218b207b68dfc1f4b398ab0856b253c
MD5 hash: 52374b52d3256d48ff25668cbd411d0a
humanhash: december-winter-rugby-pip
File name:RFQ 00000000076.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:471'040 bytes
First seen:2020-08-05 09:12:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:wK6YbBCcWY9IDfNPJB/IvVB9Anu4YZXebx05ikxUOACZfFYHEhwiDLfQGiEld4TN:wK6CfEfNPPgeu42a6XUOA2hwMj1R4h
Threatray 10'692 similar samples on MalwareBazaar
TLSH 1AA4F12D3AA01649F5BD0E3F5D300283DE36F84FD922E68B6AB51139157E59CBC60F62
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: Elango Balakrishnan <telango@iskanoman.com>
Reply-To: telango@iskanoman.com
Subject: RFQ-VENDOR 3 YEARS SUPPLY CONTRACT (RENEWAL OF LTPA 62431092)
Attachment: RFQ 00000000076.rar (contains "RFQ 00000000076.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39312/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410754
Signature
Allocates memory in foreign processes
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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: Capture Wi-Fi password
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 harvest and steal WLAN passwords
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257689 Sample: RFQ 00000000076.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Sigma detected: Capture Wi-Fi password 2->41 43 Yara detected AgentTesla 2->43 45 5 other signatures 2->45 8 RFQ 00000000076.exe 1 2->8         started        12 LKUgjc.exe 2 2->12         started        14 LKUgjc.exe 1 2->14         started        process3 file4 31 C:\Users\user\...\RFQ 00000000076.exe.log, ASCII 8->31 dropped 55 Writes to foreign memory regions 8->55 57 Allocates memory in foreign processes 8->57 59 Injects a PE file into a foreign processes 8->59 16 RegSvcs.exe 2 4 8->16         started        21 conhost.exe 12->21         started        23 conhost.exe 14->23         started        signatures5 process6 dnsIp7 33 smtp.yandex.ru 77.88.21.158, 49726, 587 YANDEXRU Russian Federation 16->33 35 192.168.2.1 unknown unknown 16->35 37 smtp.yandex.com 16->37 29 C:\Users\user\AppData\Roaming\...\LKUgjc.exe, PE32 16->29 dropped 47 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->47 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->49 51 Tries to steal Mail credentials (via file access) 16->51 53 5 other signatures 16->53 25 netsh.exe 3 16->25         started        file8 signatures9 process10 process11 27 conhost.exe 25->27         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/872aaa3d5b005b0ad86226166438b998a20f3e1619b1bd2de4ab2f60398c809a/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 07:42:13 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q4vkupk3abnqvwdceylgiofztcra6pqwdgy32lpevmxwaommqcna._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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fb42ce632ff111ef24eebae3f336e0e04b8602dd621e2886a22ce0870ce287c4
AgentTesla
+ 10'682 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware persistence trojan family:agenttesla
Link:
https://tria.ge/reports/200805-wtlx7bx9sj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Modifies service
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/872aaa3d5b005b0ad86226166438b998a20f3e1619b1bd2de4ab2f60398c809a

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 28e61a85878be9e78edae5bd26dfe416917ac8e48dddbbb1ca6487abdb67b319

AgentTesla

Executable exe 872aaa3d5b005b0ad86226166438b998a20f3e1619b1bd2de4ab2f60398c809a

(this sample)

  
Dropped by
MD5 97c231c2e3eb8978dffa331a13c54bc7
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39312/
  
Dropped by
SHA256 28e61a85878be9e78edae5bd26dfe416917ac8e48dddbbb1ca6487abdb67b319

Comments