MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9991668dc7237aa2771b6ff4c8a4a0eabe52575ccd3bd08f9689ceef51de3852. 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: 7

Intelligence 7 IOCs YARA 3 File information Comments

SHA256 hash:	9991668dc7237aa2771b6ff4c8a4a0eabe52575ccd3bd08f9689ceef51de3852
SHA3-384 hash:	1da582ca11724f99fee23b76e90892a157f1f17ba2bba3ecb40867851570b481e3e85f3a78850687f624395523cd77c3
SHA1 hash:	fbb25d1adbeb31a59428893a97dd441a110db329
MD5 hash:	8a6672136bc8a8762e28ea1d9b7e1643
humanhash:	three-speaker-foxtrot-tennessee
File name:	olla.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	765'440 bytes
First seen:	2020-08-31 12:22:43 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	12288:cRaazFf9I4GL4Hl3TxFVv0GpBkX06FndxhUX3Dg5F6qYtJLx2S8n7mVy:cR3Rf9zdjzVMGpBkfEuwtNx98nF
Threatray	9'316 similar samples on MalwareBazaar
TLSH	29F4236066FC9F77DCFA5BFC246C71A08375152E9621F7AC0E8530D925FA3948312A8B
Reporter	James_inthe_box
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/53493/

Detection(s):

SecuriteInfo.com.W32.Trojan-7.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Launching a process

Creating a process with a hidden window

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/455420

Signature

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

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)

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

Sigma detected: Scheduled temp file as task from temp location

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 schtasks.exe or at.exe to add and modify task schedules

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/9991668dc7237aa2771b6ff4c8a4a0eabe52575ccd3bd08f9689ceef51de3852/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-31 12:22:18 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 29 (82.76%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=tgiwndohen5ke5y3n72mrjfa5k7fev24zu55bd4wrhho6uo6hbja._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

6438b80d095ec295859cb2b1c099f1ae2ac0485705a447b991e84b551e40047e

AgentTesla

6f2bf53e333052923d34bb892bfbe30575270fa08cf40828767bf92bca15f52d

AgentTesla

75a6581d60198c4910011fdb2c732679635b35ed28db20f9d3483c89efb26db6

AgentTesla

c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb

AgentTesla

cfefe5d485164b99beeb1aea8faca9e61f8a53d4b742ebf733922a0896511b50

AgentTesla

d171c033a6424ac3d0fc71f4323c1c340256c02228d4fb0c49124af4abab6be0

AgentTesla

edb014655bf6c7464325b44856019f5fb1aedb94fe9ed988faa0c77d82875d3c

AgentTesla

f544548656da95993af2c115a9af5eb499741c1c9914ef556bbd599391ae769e

AgentTesla

fb51d5ec0f3c5b0ea82d4a37cd9a53e070efaaa4f067ea89301c089e0dea8a76

AgentTesla

+ 9'306 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer evasion spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200831-4wcp9m17gj/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Maps connected drives based on registry

Checks BIOS information in registry

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Looks for VMWare Tools registry key

AgentTesla Payload

Looks for VirtualBox Guest Additions in registry

AgentTesla

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

Threat name:

Suspicious File

Score:

0.45

Link:

https://yomi.yoroi.company/submissions/9991668dc7237aa2771b6ff4c8a4a0eabe52575ccd3bd08f9689ceef51de3852

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