MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b81898c8e22774e33768ab962a3acca0c718197c2b4434f3ae51761569bd7ccb. 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:	b81898c8e22774e33768ab962a3acca0c718197c2b4434f3ae51761569bd7ccb
SHA3-384 hash:	81606d6a1f3fbd543e511ad823a5de84af28ab4bd3d31a309f44be9187c7ccbfee2e06bda9ba86a874602bc027f4b320
SHA1 hash:	ad2e7152e2517b4c66408e16564c1d0a5755c3a8
MD5 hash:	1e1ba839f801d6fb9876bc7b2903250e
humanhash:	ohio-california-batman-zulu
File name:	BWY2KKJXmg22bvH.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	1'118'720 bytes
First seen:	2020-08-04 15:23:58 UTC
Last seen:	2020-08-04 15:56:24 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:BvX+8QBhtD8EnkqhOhR8tYk9iDUGuFethvjriOHOJrTGBuMq1V5p4wJ8hkdTq8:BvX08EXjv0ee6OH2GBuJVJZ
Threatray	11'388 similar samples on MalwareBazaar
TLSH	D2358DC2F140C950C96A4E36CD67DA5483337D66FF4797167088BB2B38E3193AE266C6
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: msvfabrics.in
Sending IP: 81.171.9.147
From: Gary Simona <manoj@msvfabrics.in>
Subject: Request for urgent quotation for insignia project
Attachment: RFQ Insignia.Gz (contains "BWY2KKJXmg22bvH.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

AgentTeslaV2

Link:

https://www.capesandbox.com/analysis/38814/

Detection(s):

SecuriteInfo.com.Backdoor.MSIL.Bladabindi.11410.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Unauthorized injection to a recently created process

Creating a file

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/409698

Signature

Contains functionality to register a low level keyboard hook

Found malware configuration

Installs a global keyboard hook

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)

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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/b81898c8e22774e33768ab962a3acca0c718197c2b4434f3ae51761569bd7ccb/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-04 15:25:09 UTC

AV detection:

21 of 29 (72.41%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=xamjrshce52ogn3ivolcuowmuddrqgl4fncdj45okf3bk2n5ptfq._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

329f7981abeef752b487e4ca790a53e38ff1b00872dbe037f3a122c276357b20

AgentTesla

7e393bcd518415ad70e7a6924c8798391400554fce9c2a639a891dcda4f8e230

AgentTesla

88b4ca292221e307f69dcc3b05937294447dfcde6d2acda52d1ed7d5a952a7be

AgentTesla

a29e80ca06b950427dc024e1a44049256aaaee18539dcecd7efe600309a589cf

AgentTesla

b598c7c48f10c889b428a265396073f9ae33717566c1fae28c9a8d83406e3573

AgentTesla

d71568c813508e5ca61308f597bfccf2f11fec2d5ec90bd2287d3e4b7cbb3e11

AgentTesla

f5e0fbe83739081ba2bc70e0aae26a0dd33358061b931f96e3ee12eefae90fbf

AgentTesla

fcdb8c371542fc2042b02845f80960bf6f6cda5ce67a2f4d5a05501a1927887e

AgentTesla

fd79e00e91b710ac1f39fb70bfd49e65b1810f0c03d137103c78579ddc063a9d

AgentTesla

+ 11'378 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200804-acjaghfypa/

Behaviour

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

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 Payload

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/b81898c8e22774e33768ab962a3acca0c718197c2b4434f3ae51761569bd7ccb

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