MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a28923dedd3df222c1cec68d96cfe47e803d45956aa9e4b011856f135d4e105d. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments

SHA256 hash: a28923dedd3df222c1cec68d96cfe47e803d45956aa9e4b011856f135d4e105d
SHA3-384 hash: d4a9290856148e3d954e46111a8656c4ad0a24ff0fbc2e49bc9c54857fcaa5054dd26798e0913d372a624ee6c3d101d6
SHA1 hash: 9a77cf7b27a7970befac3a334667b61f1ebb012f
MD5 hash: 92931c056767c927f705aa37038fe1af
humanhash: undress-may-wyoming-queen
File name:New_PO.pdf.exe
Download: download sample
Signature AgentTesla
File size:1'997'824 bytes
First seen:2021-02-05 10:39:49 UTC
Last seen:2021-02-05 13:08:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:j5UxdujKTERB42FBBOnpV7GRRT0vgJ39wKa/TxYS5TEhXbizar4jwvcxb87f2LuY:Y
Threatray 2'450 similar samples on MalwareBazaar
TLSH 60951F727FCF24A0596926403CD6FF7A364FB621B37BE0E79080A69C273715999D2D08
Reporter cocaman
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New_PO.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-02-05 10:43:24 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a window
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Verdict:
MALICIOUS
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.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
Contains functionality to hide a thread from the debugger
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
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 Double Extension
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file access)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 349096 Sample: New_PO.pdf.exe Startdate: 05/02/2021 Architecture: WINDOWS Score: 100 53 Multi AV Scanner detection for submitted file 2->53 55 Yara detected AgentTesla 2->55 57 Sigma detected: Suspicious Double Extension 2->57 59 4 other signatures 2->59 8 New_PO.pdf.exe 3 2->8         started        11 Mymp4.exe 3 2->11         started        13 Mymp4.exe 2->13         started        process3 signatures4 61 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->61 63 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->63 65 Hides threads from debuggers 8->65 67 Contains functionality to hide a thread from the debugger 8->67 15 New_PO.pdf.exe 2 5 8->15         started        19 cmd.exe 1 8->19         started        21 WerFault.exe 23 9 8->21         started        24 New_PO.pdf.exe 8->24         started        69 Multi AV Scanner detection for dropped file 11->69 71 Machine Learning detection for dropped file 11->71 73 Injects a PE file into a foreign processes 11->73 process5 dnsIp6 39 C:\Users\user\AppData\Roaming\...\Mymp4.exe, PE32 15->39 dropped 41 C:\Users\user\...\Mymp4.exe:Zone.Identifier, ASCII 15->41 dropped 47 Tries to steal Mail credentials (via file access) 15->47 49 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->49 51 Installs a global keyboard hook 15->51 26 Mymp4.exe 2 19->26         started        29 cmd.exe 1 19->29         started        31 conhost.exe 19->31         started        33 2 other processes 19->33 45 192.168.2.1 unknown unknown 21->45 43 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->43 dropped file7 signatures8 process9 signatures10 75 Tries to steal Mail credentials (via file access) 26->75 77 Tries to harvest and steal ftp login credentials 26->77 79 Tries to harvest and steal browser information (history, passwords, etc) 26->79 81 Installs a global keyboard hook 26->81 35 conhost.exe 29->35         started        37 timeout.exe 1 29->37         started        process11
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-02-05 10:40:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence ransomware spyware stealer trojan
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
cdf214048e790d7409fd09c5ba9e16866aee23c9449f1ed62300cd9544f58a47
MD5 hash:
ba189bcd33089807368120288ac2f0f4
SHA1 hash:
3736b9ca88b06bb9ad6a0cc4c6b8df2dc3e9c55b
SH256 hash:
a28923dedd3df222c1cec68d96cfe47e803d45956aa9e4b011856f135d4e105d
MD5 hash:
92931c056767c927f705aa37038fe1af
SHA1 hash:
9a77cf7b27a7970befac3a334667b61f1ebb012f
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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Malspam

AgentTesla

Executable exe a28923dedd3df222c1cec68d96cfe47e803d45956aa9e4b011856f135d4e105d

(this sample)

Comments