MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f638bb071b2875d5a6c3fb4903087ad419331fad2d64f88d9a207f0e39bec984. 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: 9

Intelligence 9 IOCs YARA 3 File information Comments

SHA256 hash:	f638bb071b2875d5a6c3fb4903087ad419331fad2d64f88d9a207f0e39bec984
SHA3-384 hash:	667b456ec684f13654a4d82696b2ac303dc16597f576a86676dd23aa6dd1d298a434cffe6f944107480842a136c4e932
SHA1 hash:	0e5cdd30b247a0147697bb8d0a9d102b15940e20
MD5 hash:	6daae5b0328031444500a871282913f0
humanhash:	triple-king-one-alabama
File name:	76756-WONFT4-BTO-889769-F3.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	509'952 bytes
First seen:	2020-07-31 06:24:04 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:IzSTKClLVflW5v8nLFFVObSmpHjlpT4FsHTddSQUyrvlx3d:IzSTKCBfljU/5l1TQQzvlxN
Threatray	10'651 similar samples on MalwareBazaar
TLSH	C9B4D05CB0DA241BF51632BE9FF9C29BDEA6E42F4283416B12B06597803C7586FC1E71
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: slot0.sinioraefood.com
Sending IP: 104.168.234.182
From: Facturas Sofical <facturas@sofical.es>
Subject: RE:REQUEST FOR QUOTATION( YGB01-E080686)
Attachment: 76756-WONFT4-BTO-889769-F3.GZ (contains "76756-WONFT4-BTO-889769-F3.exe")

AgentTesla SMTP exfil server:
smtp.yandex.ru:587

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AgentTeslaV2

Link:

https://www.capesandbox.com/analysis/35830/

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

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/404569

Signature

Found malware configuration

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)

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:

agenttesla

Link:

https://mwdb.cert.pl/sample/f638bb071b2875d5a6c3fb4903087ad419331fad2d64f88d9a207f0e39bec984/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-07-31 06:25:08 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=6y4lwby3fb25ljwd7neqgcd22qmtgh5nfvsprdm2eb7q4on6zgca._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

2257ef4353b3b6ce6b0027664b1b4017f33f45d14c03132c3625faf1d6bb2816

AgentTesla

24e82b6d52501a968a09b294dff28bca82368e5974bdeca97cef781a111ff3c8

AgentTesla

3c73fc6ab8a765ea48a1ee51a2a3142fe05332e4661c2f2ec0526ae225acf308

AgentTesla

5d8ce7ae5c35fe83e9be319245bd0bd769e7b663dfe09afdb01251aee288a300

AgentTesla

5e1663a897c64460d68fdf6848b63f589680e75f4d935258a7862b9d1ff617b1

AgentTesla

713b5b1e6e84fadb65d3f5000e1bf1eeec0287e45c19f05d97a9445020149083

AgentTesla

a3655b55fca072854a2913e545999b86b33d24e49da56e5ecd8c37bd99f4afed

AgentTesla

dc819faf213b4e30194d132a5d5e1393392a735ddff185f7a958cad8817e3bf0

AgentTesla

f16b478c89a680a108e8fd07cd46fc553978819135a21208bb0e8f92e2fdd794

AgentTesla

+ 10'641 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/200731-gxxwc5w66x/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Program crash

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

Threat name:

Kryptik

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/f638bb071b2875d5a6c3fb4903087ad419331fad2d64f88d9a207f0e39bec984

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