MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46cf0d598ead968845e7d17cfba1b30eccb7a66fa639763ba99335b3ce4d8f65. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 46cf0d598ead968845e7d17cfba1b30eccb7a66fa639763ba99335b3ce4d8f65
SHA3-384 hash: b46189c905e5f1b6349e760db3366246d3c9f19f41699ccaeca7cd8cd06b4ed834153397c8afc80e9ca21000de38e89a
SHA1 hash: 33486338927e5f5736de4b4ed491a85d1f630094
MD5 hash: 9f055e60e6acb1a50bc542e0dbae34fc
humanhash: timing-uranus-hydrogen-stream
File name:Microsoft.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:802'816 bytes
First seen:2020-08-08 17:59:14 UTC
Last seen:2020-08-08 18:55:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:lqMxF2J56BIPTd/mI5F/OyPJkVCB1pNV0vpvQc:lmiV8zCvJt
Threatray 10'885 similar samples on MalwareBazaar
TLSH F20529393989A415D53D3A3384B89B9273B1E5833EE5CA0F39C6535CAF132CB770625A
Reporter abuse_ch
Tags:AgentTesla exe Outlook


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: EUR02-AM5-obe.outbound.protection.outlook.com
Sending IP: 40.92.67.22
From: beatrice dizy <dizys2@msn.com>
Subject: IMPORTANT NOTICE
Attachment: Microsoft.zip (contains "Microsoft.exe")

AgentTesla SMTP exfil server:
smtp.gmail.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/42214/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Pretoria.1.27465.14038.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/415897
Signature
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Creates multiple autostart registry keys
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: Add file from suspicious location to autostart registry
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 260199 Sample: Microsoft.exe Startdate: 08/08/2020 Architecture: WINDOWS Score: 84 43 Yara detected AgentTesla 2->43 45 Sigma detected: Add file from suspicious location to autostart registry 2->45 8 Microsoft.exe 7 2->8         started        process3 file4 31 C:\Users\user\AppData\Roaming\apilition.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 8->33 dropped 35 C:\Users\...\apilition.exe:Zone.Identifier, ASCII 8->35 dropped 11 apilition.exe 4 8->11         started        14 cmd.exe 1 8->14         started        process5 signatures6 51 Writes to foreign memory regions 11->51 53 Allocates memory in foreign processes 11->53 55 Injects a PE file into a foreign processes 11->55 16 AddInProcess32.exe 2 4 11->16         started        20 cmd.exe 1 11->20         started        22 conhost.exe 14->22         started        process7 file8 29 C:\Users\user\AppData\Roaming\...\ljYBX.exe, PE32 16->29 dropped 37 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->37 39 Creates multiple autostart registry keys 16->39 41 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->41 24 reg.exe 1 1 20->24         started        27 conhost.exe 20->27         started        signatures9 process10 signatures11 47 Creates multiple autostart registry keys 24->47 49 Creates an autostart registry key pointing to binary in C:\Windows 24->49
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/46cf0d598ead968845e7d17cfba1b30eccb7a66fa639763ba99335b3ce4d8f65/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-08 18:01:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=i3hq2wmovwliqrph2f6pxintb3glpjtpuy4xmo5jsm23htsnr5sq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'875 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200808-nhnqg2pf92/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

zip bf32e2335e5e22c658bc4314b2825661300b583dc3b66248a79235c06eb711fa

AgentTesla

Executable exe 46cf0d598ead968845e7d17cfba1b30eccb7a66fa639763ba99335b3ce4d8f65

(this sample)

  
Dropped by
MD5 f717dc561728a5509cf1f4e9ef7e25ae
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 bf32e2335e5e22c658bc4314b2825661300b583dc3b66248a79235c06eb711fa
Cape
Cape
https://www.capesandbox.com/analysis/42214/

Comments