MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5efbcb25b4339ea9e004364c443afaadb86353cce9dcd9508115bda5a57be88. 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:	a5efbcb25b4339ea9e004364c443afaadb86353cce9dcd9508115bda5a57be88
SHA3-384 hash:	d687b19c10fec6015ff717c467f981d2e1811b53a0f48091c0cf7ac69ce4fc1f52622591f8ee806e566951cfd14951fc
SHA1 hash:	539e406b3805268a8375057c0c0d8fd911085d0e
MD5 hash:	623a93916a1b27e7c24c18e0d557b353
humanhash:	mobile-eight-hotel-oklahoma
File name:	20OA06052040820.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	867'840 bytes
First seen:	2020-08-04 10:06:51 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	4bae7147ec04d935db5914fb885560bb (11 x AgentTesla, 3 x MassLogger, 2 x AZORult)
ssdeep	12288:Oz7G/lsTGbsiZQfwgZLObQINANWz3O6Ex7FxBwW49LDT2fxyO8V5O6GLl3At0hww:OetNafLLOM9QKlNwW2d52At0z
Threatray	11'733 similar samples on MalwareBazaar
TLSH	8D05AF1EF3E08437D1B2163D7C1BAFA4582EBD112D289A463BECFD4C5E386513A25297
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

From: "Sales Dept." <oldrati.falchetti@oldrati.it>
Subject: offerta per quotazione
Attachment: 20OA06052040820.iso (contains "20OA06052040820.exe")

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

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/38436/

Detection(s):

PUA.Win.Adware.Slugin-6803969-0

PUA.Win.Adware.Slugin-6840354-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Unauthorized injection to a recently created process

Sending a UDP request

Using the Windows Management Instrumentation requests

Reading critical registry keys

Stealing user critical data

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/409218

Signature

Contains functionality to detect sleep reduction / modifications

Detected unpacking (changes PE section rights)

Detected unpacking (creates a PE file in dynamic memory)

Detected unpacking (overwrites its own PE header)

Found malware configuration

Machine Learning detection for sample

Maps a DLL or memory area into another process

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)

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

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/a5efbcb25b4339ea9e004364c443afaadb86353cce9dcd9508115bda5a57be88/

Threat name:

Win32.Spyware.Negasteal

Status:

Malicious

First seen:

2020-08-04 10:08:09 UTC

AV detection:

45 of 48 (93.75%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uxx3zms3im46vhqainsmiq5pvlnymnj4z2o43fiicfn5uwsxx2ea._file

Verdict:

malicious

Label(s):

agenttesla

hawkeyekeylogger

AgentTesla

24154b374505bf76998acbeb5dafbf42a61a516234f2f1b708784ec3669bfbd1

AgentTesla

245d4abbb0e7f27ec6526904c2a4fb22abc8fafaa63bd80bb7193f9a9a58b204

AgentTesla

28558516b6b4912e36105c566322d9e4a47a0fca0847c55227683c51834e98e9

AgentTesla

45b7e7e404b6cd8eaca7798b5977fe17cae6a261e45d6a0dfd39bf15d0582b60

AgentTesla

b4ddc58acc408b2ba14056f04e2a989f229e537dc7132a48250b3565ef82ca09

AgentTesla

b6072e84d6cfb921a3fb0a38bc13e148a308b7b4158cd9102d933810ee6858ab

AgentTesla

bcb3a08ff39258f04e54ccb4ec531754fb2ece9755d92885f7f5c298d29897e4

AgentTesla

c82a750c5a0dcc2a923f97b3bfbba13fd302144fdcdab020f7c7c94e24892807

AgentTesla

f7c64b437d10f5483b3a78cbf4a08f22cd829c60515c312d2bd21e1a37e250ce

AgentTesla

+ 11'723 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

upx keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200804-7wbrlegman/

Behaviour

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Reads user/profile data of local email clients

UPX packed file

AgentTesla Payload

AgentTesla

Malware family:

AgentTesla.v2

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a5efbcb25b43/report/overview.html

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

Threat name:

Cryptor

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/a5efbcb25b4339ea9e004364c443afaadb86353cce9dcd9508115bda5a57be88

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