MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1ae3cae3a7b93cf6120c02c769ba0779bc367f892e0aebc5809b7ec936e1c0f. 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:	a1ae3cae3a7b93cf6120c02c769ba0779bc367f892e0aebc5809b7ec936e1c0f
SHA3-384 hash:	bf7dcb07f5f05809e7af885a7a2cf48241b29b210a7780c87d0dfe7d20ba42c0408e9ebdff896aa511f3e2a060b9eba5
SHA1 hash:	a57a6582e50d10d2320b9334cf9b8dc5f3876f6e
MD5 hash:	56a28ee77b6d112ac1d2e6e6dca262e1
humanhash:	magnesium-nebraska-oregon-two
File name:	RFQ REF R2100131410.pdf.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	623'616 bytes
First seen:	2020-07-29 11:19:04 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:ZtsYws8Jky9kQWPZQk8K1A0e+m33+JQQlj5lJHfZK:DsfXDYZiee+e+CQldllfo
Threatray	10'789 similar samples on MalwareBazaar
TLSH	33D4CF19BE90F916C2FE4574E6DC0619CFFD8182926BF319684193BB1AC63A3DD413B2
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: saranaprimelestari.com
Sending IP: 37.48.85.232
From: Trikora Ibnu <sale@saranaprimelestari.com>
Subject: REQUEST FOR QUOTATION (RFQ REF : R2100131410)
Attachment: RFQ REF R2100131410.pdf.gz (contains "RFQ REF R2100131410.pdf.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.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/34806/

Detection(s):

SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

Creating a file

Using the Windows Management Instrumentation requests

Unauthorized injection to a system process

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/402384

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

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)

Uses an obfuscated file name to hide its real file extension (double extension)

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/a1ae3cae3a7b93cf6120c02c769ba0779bc367f892e0aebc5809b7ec936e1c0f/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-07-29 11:20:11 UTC

AV detection:

24 of 29 (82.76%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ugxdzlr2poj46yjayawhng5ao6n4gz7yslqk5pcybg36ze3odqhq._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

634fe7f055e811f93c607b8e6f3333c2a5708236637c1accb3965284d82651bb

AgentTesla

66ace62e0ede33040b4cfcccff43456f23c9867db05baf7c8e232391b284bf49

AgentTesla

7f3d3f1008ceebb52921ebf9519ae7f84f9015ee4f7dcda28cedd5271737967f

AgentTesla

82b29aea19d46b3da79de8efa015b73dd3589353e16b73579820ab8a1a0ec077

AgentTesla

89819dbac176147b14b878250b43d1954844e6f0d4bace8b4607bad4405ca96b

AgentTesla

8a0779333aa240cc2fd83c8e32febca648d04c2e01db732fbc0e6180495b7ae9

AgentTesla

a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050

AgentTesla

a5a2748fa5b4e8ec996c3a400fa9250c3172ce43e3c8dbae8d26f825566d8d07

AgentTesla

cb8a3020513f5f20c9bf0024baa3e328fc8d54794b9b94f7ddc0e2bac208945f

AgentTesla

+ 10'779 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger trojan stealer spyware family:agenttesla

Link:

https://tria.ge/reports/200729-a4v8dq7l46/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Reads data files stored by FTP clients

AgentTesla

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/a1ae3cae3a7b93cf6120c02c769ba0779bc367f892e0aebc5809b7ec936e1c0f

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