MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31be3a4d21f948d2bca81f0a9e29f178f42855ef71ad8a3cf0765f980ba34563. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments

SHA256 hash: 31be3a4d21f948d2bca81f0a9e29f178f42855ef71ad8a3cf0765f980ba34563
SHA3-384 hash: 90ce8e066627ee3fd2f253a53b8d45aeea18dc9121bb27521d80822bb69fcf2cd8fcbb5fba28a866895615036d29e110
SHA1 hash: 0f4c719b5e13c634cabe09093326b1b81d0b62c7
MD5 hash: 8c959e7e4ecfe98be792cd846257fbe8
humanhash: robert-enemy-aspen-south
File name:ATTACHED INVOICE.exe
Download: download sample
Signature AgentTesla
File size:897'536 bytes
First seen:2022-03-11 02:15:11 UTC
Last seen:2022-03-14 12:10:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:L71MxPCz7Kp6KhLjUMOIe6yBanG3t4KZdK:3BXKpkMve6+anG+KZd
Threatray 16'310 similar samples on MalwareBazaar
TLSH T18415CFE0EE5C837EED10723AC4A844700EB5299D3821FF59A58D11DE0A67FCF49E652E
Reporter malwarelabnet
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
4
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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)
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 587098 Sample: ATTACHED INVOICE.exe Startdate: 11/03/2022 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for dropped file 2->37 39 15 other signatures 2->39 7 ATTACHED INVOICE.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\...\BwQrJWNLrOa.exe, PE32 7->23 dropped 25 C:\Users\...\BwQrJWNLrOa.exe:Zone.Identifier, ASCII 7->25 dropped 27 C:\Users\user\AppData\Local\...\tmp7C44.tmp, XML 7->27 dropped 29 C:\Users\user\...\ATTACHED INVOICE.exe.log, ASCII 7->29 dropped 41 Adds a directory exclusion to Windows Defender 7->41 43 Injects a PE file into a foreign processes 7->43 11 ATTACHED INVOICE.exe 2 7->11         started        15 powershell.exe 23 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 file7 31 C:\Windows\System32\drivers\etc\hosts, ASCII 11->31 dropped 45 Modifies the hosts file 11->45 19 conhost.exe 15->19         started        21 conhost.exe 17->21         started        signatures8 process9
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-03-11 00:49:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Drops file in Drivers directory
.NET Reactor proctector
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
8754a36f380daa54f09bc5598634c02f71672c1d3b0097f99465ee4d054a3dc6
MD5 hash:
33afe086bf7b5692c507c4b7087b0913
SHA1 hash:
634a787edc05becfa965951dc52cb9c3b2a21d9d
SH256 hash:
31be3a4d21f948d2bca81f0a9e29f178f42855ef71ad8a3cf0765f980ba34563
MD5 hash:
8c959e7e4ecfe98be792cd846257fbe8
SHA1 hash:
0f4c719b5e13c634cabe09093326b1b81d0b62c7
Malware family:
AgentTesla.v3
Verdict:
Malicious
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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

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