MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 514c7f4384728fe67e4073654dcb51db0b07c8bb3bdb47c08779f4e8cec01f8a. 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 5 File information Yara 3 Comments

SHA256 hash: 514c7f4384728fe67e4073654dcb51db0b07c8bb3bdb47c08779f4e8cec01f8a
SHA3-384 hash: 2c674d1b70be3e614b74baaedc17b1d04598f1b8549103a36f720fdaf9a93bc7e6c5b6a32af1c5d6051f75b734663c71
SHA1 hash: 1d834085eb5beb39c5507bc1ff8269af05b6d7d7
MD5 hash: 056e6acf893464db30dae11eaf6695dc
humanhash: sad-ceiling-blue-lima
File name:Documento de envío.exe
Download: download sample
Signature AgentTesla
File size:522'240 bytes
First seen:2020-07-31 16:02:04 UTC
Last seen:2020-07-31 16:48:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:bzSTKCLnDWiI2YtV5vQJFezNqBPJdIp5Ta9m9O0dpjUepDLqMfb:bzSTKCrDWiITrvQeCJiCm9vqepD2
TLSH 49B4BEDC74D6610AF375347E9EF5B19BCEA6E4EB114E022BE274258381787086E83E71
Reporter @abuse_ch
Tags:AgentTesla DHL ESP exe geo


Twitter
@abuse_ch
Malspam distributing AgentTesla:

HELO: mail.isra.edu.pk
Sending IP: 103.12.58.110
From: DHL expresar <aziz.kazi@isra.edu.pk>
Subject: Documento de envío (Factura, PI, Bill of Lading)
Attachment: Documento de envo.rar (contains "Documento de envío.exe")

AgentTesla SMTP exfil server:
mail.pierreinsurancebrokers.com:587

Intelligence


File Origin
# of uploads :
2
# of downloads :
52
Origin country :
US US
Mail intelligence
Geo location:
Global
Volume:
Low
Vendor Threat Intelligence
Gathering data
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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: 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: 255465 Sample: Documento de env#U00edo.exe Startdate: 01/08/2020 Architecture: WINDOWS Score: 100 28 g.msn.com 2->28 30 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->30 38 Found malware configuration 2->38 40 Sigma detected: Scheduled temp file as task from temp location 2->40 42 Yara detected AgentTesla 2->42 44 9 other signatures 2->44 8 Documento de env#U00edo.exe 7 2->8         started        signatures3 process4 file5 20 C:\Users\user\AppData\...\&startupname&.exe, PE32 8->20 dropped 22 C:\Users\user\AppData\Local\...\tmpA035.tmp, XML 8->22 dropped 24 C:\...\&startupname&.exe:Zone.Identifier, ASCII 8->24 dropped 26 C:\Users\...\Documento de env#U00edo.exe.log, ASCII 8->26 dropped 46 Injects a PE file into a foreign processes 8->46 12 Documento de env#U00edo.exe 2 8->12         started        16 schtasks.exe 1 8->16         started        signatures6 process7 dnsIp8 32 pierreinsurancebrokers.com 116.202.175.242, 49735, 587 HETZNER-ASDE Germany 12->32 34 mail.pierreinsurancebrokers.com 12->34 36 192.168.2.1 unknown unknown 12->36 48 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->48 50 Tries to steal Mail credentials (via file access) 12->50 52 Tries to harvest and steal ftp login credentials 12->52 54 Tries to harvest and steal browser information (history, passwords, etc) 12->54 18 conhost.exe 16->18         started        signatures9 process10
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-31 16:03:06 UTC
AV detection:
21 of 31 (67.74%)
Threat level
  5/5
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Program crash
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.

Malspam

AgentTesla

Executable exe 514c7f4384728fe67e4073654dcb51db0b07c8bb3bdb47c08779f4e8cec01f8a

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments