MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3614fd813d7893616e8bea149da297b7f399bedcf7faf0bdf867537b586f4d02. 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


Intelligence File information Yara 3 Comments

SHA256 hash: 3614fd813d7893616e8bea149da297b7f399bedcf7faf0bdf867537b586f4d02
SHA3-384 hash: d54cc8536593f107f4495bcbb65306e1930765eef153ae5ef282a37709f2c1377652733a4fca086f024d19cfb1c4c72f
SHA1 hash: cc6596c9bfbce7951c00e837ea4323266839f6d6
MD5 hash: 3e0e04997120f016e0556a1e0385ee84
humanhash: utah-alpha-fix-south
File name:P.O.exe
Download: download sample
Signature AgentTesla
File size:777'728 bytes
First seen:2020-07-31 10:24:11 UTC
Last seen:2020-07-31 11:09:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:cJrCcpz7bMnAtwyfl1UZL0LcS5MU/997OphG54046CSprMDM:aKM9eLCW8f2q4046C
TLSH 56F4D1047B50E54EC6AF8F77DAC44810EDB8E99A4A17E38738C137BF18CE3AAA501575
Reporter @abuse_ch
Tags:AgentTesla exe


Twitter
@abuse_ch
AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence


File Origin
# of uploads :
2
# of downloads :
35
Origin country :
FR FR
Mail intelligence
No data
Vendor Threat Intelligence
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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
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)
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 255299 Sample: P.O.exe Startdate: 31/07/2020 Architecture: WINDOWS Score: 100 49 g.msn.com 2->49 51 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->51 65 Found malware configuration 2->65 67 Sigma detected: Scheduled temp file as task from temp location 2->67 69 Yara detected AgentTesla 2->69 71 5 other signatures 2->71 8 P.O.exe 5 2->8         started        12 YYtJku.exe 1 2->12         started        14 YYtJku.exe 2->14         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\&startupname&.exe, PE32 8->35 dropped 37 C:\Users\user\AppData\Local\...\tmpE76E.tmp, XML 8->37 dropped 39 C:\...\&startupname&.exe:Zone.Identifier, ASCII 8->39 dropped 41 C:\Users\user\AppData\Local\...\P.O.exe.log, ASCII 8->41 dropped 73 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->73 75 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->75 77 Injects a PE file into a foreign processes 8->77 79 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 8->79 16 P.O.exe 2 5 8->16         started        21 schtasks.exe 1 8->21         started        81 Machine Learning detection for dropped file 12->81 23 YYtJku.exe 2 12->23         started        25 YYtJku.exe 12->25         started        27 YYtJku.exe 14->27         started        signatures6 process7 dnsIp8 43 smtp.yandex.ru 77.88.21.158, 49737, 49739, 587 YANDEXRU Russian Federation 16->43 45 smtp.yandex.com 16->45 31 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 16->31 dropped 33 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 16->33 dropped 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->53 55 Moves itself to temp directory 16->55 57 Tries to steal Mail credentials (via file access) 16->57 29 conhost.exe 21->29         started        47 smtp.yandex.com 23->47 59 Tries to harvest and steal ftp login credentials 23->59 61 Tries to harvest and steal browser information (history, passwords, etc) 23->61 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->63 file9 signatures10 process11
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-31 10:26:06 UTC
AV detection:
20 of 31 (64.52%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: RenamesItself
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Threat name:
Suspicious File
Score:
0.45

Yara Signatures


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.

Comments