MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 25b25b12d4f4645124f44ef05b685d011b3705d0a24e9ce45ab74a885b360491. 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 4 File information Comments

SHA256 hash:	25b25b12d4f4645124f44ef05b685d011b3705d0a24e9ce45ab74a885b360491
SHA3-384 hash:	fcebb12157ea34108d63781058937b63bca5c50ee922115ad319f9639f4ae69dedfacf1fba961c4e918e3f8f6b2f3e48
SHA1 hash:	a190b1d552b545b3105da88be840af6061c8dfaa
MD5 hash:	d0c4a438d17b6f9119a4c9cef4e7db7f
humanhash:	snake-alabama-july-sweet
File name:	transferencia.PDF_____________________.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	612'352 bytes
First seen:	2020-08-13 05:57:54 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	12288:vjl+j4VTho1gPsLts92D+TQFJgfcDp5ZZr29lxzkA:vjoGho1gPsLts92YgJgsp5rZ
Threatray	265 similar samples on MalwareBazaar
TLSH	6ED4F1B037DA5A60D76C0E39152310806B7A392BEF29D70E2D4A61DD1C3AB747741FAB
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: chi2.etic.com.mx
Sending IP: 96.127.136.66
From: ventas <operaciones@kemi.mx>
Subject: Registro de Cuenta Interbancaria en Dólares --
Attachment: transferencia.PDF_____________________.gz (contains "transferencia.PDF_____________________.exe")

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

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AgentTeslaV2

Link:

https://www.capesandbox.com/analysis/44823/

Detection(s):

SecuriteInfo.com.BackDoor.SpyBotNET.25.728.22479.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Unauthorized injection to a recently created process

Creating a file

Using the Windows Management Instrumentation requests

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/425123

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 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: Suspicious Double Extension

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)

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/25b25b12d4f4645124f44ef05b685d011b3705d0a24e9ce45ab74a885b360491/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2020-08-12 20:41:50 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ewzfwewu6rsfcjhuj3yfw2c5aentoboqujhjzzc2w5fiqwzwasiq._file

Verdict:

unknown

AgentTesla

1a2656ed2fba149f0d2abcdd01c2e1dd19a40c4218c61251fabb2e77dc97200c

AgentTesla

222fc47d0caeb4487c3afdebf79b09ee30fcbc9cc5342ba4708516edcea97514

AgentTesla

25d7c4fad856957a1a4b2a146221ca5620675edf33eeecb596a2610bb719a45e

AgentTesla

6a5dd6f113db2a0fb66d30af44390b0aa07b4195ee7d43e85947d2ff39f78160

AgentTesla

a7e448adfaa3c0d503907c2353cbb0190240a20f28f6a55bf146eb19f1a05273

AgentTesla

ac873de025d0c56aa703886588935bad57548b776dd73b4f684111d8c5c280d3

AgentTesla

d1789b671449fd0d419fe349473b1504222a8f2ef1361c00bd4fdb1628faea48

AgentTesla

d797f7b12113a447520ca29039010d409119f4ace3c26e4d14ea3ee2371d45a4

AgentTesla

dbce5e450adc05e8d72f3bdfc0affc07aeb7ef9bcfc84e664218b3626a39327b

AgentTesla

+ 255 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200813-d7g1v16rtx/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

AgentTesla Payload

AgentTesla

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

FakeMS

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/25b25b12d4f4645124f44ef05b685d011b3705d0a24e9ce45ab74a885b360491

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