MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a8b7097241b3eb6527c9f7ef529eb5897a5555762d7f7123db2c0395d243054. 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

SHA256 hash: 8a8b7097241b3eb6527c9f7ef529eb5897a5555762d7f7123db2c0395d243054
SHA3-384 hash: 20dd9bb30ab99aba51a1c082dfde7986ea51dd1879770598647d69a298b5668f22e973b7e63a6b2ae10e150b58dd06c4
SHA1 hash: d5b78f7151ce9b44c88d35e2b79fab7bfaaf4d0e
MD5 hash: 541c601ab569bca662977c4c84cc3e95
humanhash: fruit-nuts-hydrogen-johnny
File name:wire transfer usd 44.151.83.exe
Download: download sample
Signature AgentTesla
File size:451'072 bytes
First seen:2020-08-05 08:47:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:HqFIFPnVf56AJtJO+T+UzjiXkqsWqG8obf:HqUPVf56AJtJOC+V9
Threatray 10'658 similar samples on MalwareBazaar
TLSH 05A4F14C76A19109F17E5E3F9C3000839E12F46FEE22D64B5AB62579017E69CBC74FA2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: unique-logistics.com
Sending IP: 103.133.104.130
From: Cecilia.Cheng <cecilia.cheng.hgh@unique-logistics.com>
Reply-To: cecilia.cheng.hgh@unique-logistics.com
Subject: wire transfer USD 44.151.83
Attachment: wire transfer usd 44.151.83.rar (contains "wire transfer usd 44.151.83.exe")

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

Intelligence


File Origin
# of uploads :
1
# of downloads :
62
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
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
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257606 Sample: wire transfer usd 44.151.83.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Sigma detected: Scheduled temp file as task from temp location 2->43 45 9 other signatures 2->45 8 wire transfer usd 44.151.83.exe 5 2->8         started        process3 file4 25 C:\Users\user\AppData\...\TSXxGoFSyfQ.exe, PE32 8->25 dropped 27 C:\Users\...\TSXxGoFSyfQ.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\AppData\Local\Temp\tmp219.tmp, XML 8->29 dropped 31 C:\...\wire transfer usd 44.151.83.exe.log, ASCII 8->31 dropped 47 Injects a PE file into a foreign processes 8->47 12 wire transfer usd 44.151.83.exe 2 8->12         started        17 schtasks.exe 1 8->17         started        signatures5 process6 dnsIp7 35 pkfpmes.co.ke 181.214.31.149, 49742, 587 ASDETUKhttpwwwheficedcomGB Chile 12->35 37 mail.pkfpmes.co.ke 12->37 33 C:\Windows\System32\drivers\etc\hosts, ASCII 12->33 dropped 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->49 51 Tries to steal Mail credentials (via file access) 12->51 53 Tries to harvest and steal ftp login credentials 12->53 55 2 other signatures 12->55 19 reg.exe 1 12->19         started        21 conhost.exe 17->21         started        file8 signatures9 process10 process11 23 conhost.exe 19->23         started       
Threat name:
ByteCode-MSIL.Trojan.FormBook
Status:
Malicious
First seen:
2020-08-05 01:51:40 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Behaviour
Suspicious behavior: EnumeratesProcesses
Modifies registry key
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Malware family:
AgentTesla.v2
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
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

Executable exe 8a8b7097241b3eb6527c9f7ef529eb5897a5555762d7f7123db2c0395d243054

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments