MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 17431eab4f753e88127e1bf94a796cb4f001ae3c0300ed8b98522713e7ac8e8e. 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:	17431eab4f753e88127e1bf94a796cb4f001ae3c0300ed8b98522713e7ac8e8e
SHA3-384 hash:	d91b1a04f4d6e7661a3f5d99ae4bfd75cf0de51c5e64f4d2637b8e77b3f42284f3589154d962df0b218493a87e351d2c
SHA1 hash:	1b3426cb9b172e8d2cbef7363e56876b1821947a
MD5 hash:	fbb77e58c5bac8ac992a7330dc4a5de8
humanhash:	july-ink-apart-quebec
File name:	SecuriteInfo.com.BackDoor.SiggenNET.5.7141.1390
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	379'392 bytes
First seen:	2020-08-10 18:29:36 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	6144:bu1L6KDO7wD+i71p4fFh2GPhPnyvBplPCGMeAW+pDc:F/7I+xfNPnMpPC5W+
Threatray	11'002 similar samples on MalwareBazaar
TLSH	2F84233FF190E550C7C51EB9AD59A2041E74F92D9607DA2A3ECC3668C1B23DA8D07672
Reporter	SecuriteInfoCom
Tags:	AgentTesla

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Gathering data

Detection(s):

SecuriteInfo.com.BackDoor.SiggenNET.5.7141.1390.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Adding an access-denied ACE

Creating a file in the %AppData% subdirectories

Enabling the 'hidden' option for recently created files

Unauthorized injection to a recently created process

Using the Windows Management Instrumentation requests

Reading critical registry keys

Setting a keyboard event handler

Stealing user critical data

Enabling autorun

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

88 / 100

Link:

https://www.joesandbox.com/analysis/417491

Signature

Creates an undocumented autostart registry key

Hides that the sample has been downloaded from the Internet (zone.identifier)

Installs a global keyboard hook

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)

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 steal Mail credentials (via file access)

Yara detected AgentTesla

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/17431eab4f753e88127e1bf94a796cb4f001ae3c0300ed8b98522713e7ac8e8e/

Threat name:

ByteCode-MSIL.Trojan.Perseus

Status:

Malicious

First seen:

2020-08-10 18:31:07 UTC

AV detection:

26 of 29 (89.66%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=c5br5k2pou7iqet6dp4uu6lmwtyadlr4amao3c4ykitrhz5mr2ha._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

19a8e4f9fb01ff4333c81f78bba61e42d516c860e8974e059be82f2bf9d5a641

AgentTesla

1a55a181a00b302c127b8871d999942cd3f9b83cfb3172cca4894fbbea1b668f

AgentTesla

1dc42296af9ef7fa6fb9f894947b9547b964ff2926894bb2b52a09283b7a4b60

AgentTesla

3b4fb17419bd0e04f1ccd704484fd4f26f1a583871924641a52d4f9440301947

AgentTesla

500ca56a7de01fbde3cdd1fcb392eb2a77b2706665a7a2e08e00ce8b405c27d5

AgentTesla

71146568c5f7e1bc849a6f73bf08ba68c14e73fcaf049da083879f15a2cecc44

AgentTesla

897a1305d267937baedeaf75e35e386efbb9c5d7d66819aaecfd885e84196142

AgentTesla

dcbfc03cfe9523c25ab335f599cebcbbe8f2439ef7ab973aa9ec0330e4e7d11f

AgentTesla

f7e513d0306588b6a5ab536513e1ada1cc326116d0840a8fc9a029f473645b45

AgentTesla

+ 10'992 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla persistence

Link:

https://tria.ge/reports/200810-98e6rwrky6/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads user/profile data of local email clients

Reads user/profile data of web browsers

AgentTesla Payload

AgentTesla

Modifies WinLogon for persistence

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/17431eab4f753e88127e1bf94a796cb4f001ae3c0300ed8b98522713e7ac8e8e

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