MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b2d98988762dc2de5918566081c7d43d9dacb82cede10c6af1cbb50ab0955a9. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5b2d98988762dc2de5918566081c7d43d9dacb82cede10c6af1cbb50ab0955a9
SHA3-384 hash: e174abc36e985b479ac5c1d9df1ded3a689012fbc5709a56b0eb070f4de9b27a7e434fec1b4662ee34580e6b0fcdc05a
SHA1 hash: 0d8338fba93fbf11c1be5654c6c0c8cf7567a3ec
MD5 hash: 38f2f8d1400e1388f063c35ef185380c
humanhash: illinois-rugby-mirror-apart
File name:outlook.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:802'816 bytes
First seen:2020-08-08 07:57:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:PFyk456B0UxOUfaVp9EE65kUpHZQDx326wyhbTEV81fj4lijomV1pNV0IgpdJ5J1:dq4xDaVT0p2D1J0aMl5o1pNV0vpvQc
Threatray 10'993 similar samples on MalwareBazaar
TLSH 6D0518393A459405D53C363384E5ABC276B1E6833EE1CA0F79C6135CAE137DB7B0A25A
Reporter abuse_ch
Tags:AgentTesla exe Outlook


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: EUR02-VE1-obe.outbound.protection.outlook.com
Sending IP: 40.92.69.51
From: feno_ u201 <feno_u201@outlook.fr>
Subject: IMPORTANT NOTICE
Attachment: outlook.rar (contains "outlook.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/42045/
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.spyw.evad
Score:
90 / 100
Link:
https://www.joesandbox.com/analysis/415688
Signature
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Creates multiple autostart registry keys
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: MS Office Product Spawning Exe in User Dir
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 260093 Sample: outlook.exe Startdate: 08/08/2020 Architecture: WINDOWS Score: 90 50 Found malware configuration 2->50 52 Yara detected AgentTesla 2->52 54 Sigma detected: Add file from suspicious location to autostart registry 2->54 56 2 other signatures 2->56 7 outlook.exe 7 2->7         started        10 pcalua.exe 1 2->10         started        12 ljYBX.exe 2->12         started        14 pcalua.exe 1 1 2->14         started        process3 file4 34 C:\Users\user\AppData\Roaming\outlook.exe, PE32 7->34 dropped 36 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 7->36 dropped 38 C:\Users\user\...\outlook.exe:Zone.Identifier, ASCII 7->38 dropped 16 outlook.exe 2 7->16         started        19 cmd.exe 1 7->19         started        21 outlook.exe 2 10->21         started        23 conhost.exe 12->23         started        process5 signatures6 44 Writes to foreign memory regions 16->44 46 Allocates memory in foreign processes 16->46 48 Injects a PE file into a foreign processes 16->48 25 AddInProcess32.exe 2 5 16->25         started        30 reg.exe 1 1 19->30         started        32 conhost.exe 19->32         started        process7 dnsIp8 42 smtp.gmail.com 172.253.120.109, 49738, 587 GOOGLEUS United States 25->42 40 C:\Users\user\AppData\Roaming\...\ljYBX.exe, PE32 25->40 dropped 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 25->58 60 Tries to steal Mail credentials (via file access) 25->60 62 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 25->62 68 4 other signatures 25->68 64 Creates multiple autostart registry keys 30->64 66 Creates an autostart registry key pointing to binary in C:\Windows 30->66 file9 signatures10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5b2d98988762dc2de5918566081c7d43d9dacb82cede10c6af1cbb50ab0955a9/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-08 07:59:07 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lmwzrgehmloc3zmrqvtaqhd5ipm5vs4cz3pbbrvpds5vbkyjkwuq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'983 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200808-1r2gty6lle/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5b2d98988762dc2de5918566081c7d43d9dacb82cede10c6af1cbb50ab0955a9

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

rar e6ee4f313f8172e24eca0ea0d4c7602b8644c6a815252de3d6abda5bf0bb1070

AgentTesla

Executable exe 5b2d98988762dc2de5918566081c7d43d9dacb82cede10c6af1cbb50ab0955a9

(this sample)

  
Dropped by
MD5 a6bb06bd3b2bbc2a6f98c4154cc8e6ac
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42045/
  
Dropped by
SHA256 e6ee4f313f8172e24eca0ea0d4c7602b8644c6a815252de3d6abda5bf0bb1070

Comments