MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b728bdb1b447a5ddaee163be25143ee8c04de2a71505eb61ad5a4001a8198084. 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: b728bdb1b447a5ddaee163be25143ee8c04de2a71505eb61ad5a4001a8198084
SHA3-384 hash: 84e5d66c6249308f7c943a7823c58813dee6878bb587950e25ea284834f7747a233b30d3cc3ab78436f4a4aaf589cb72
SHA1 hash: e2c54985e122a9c4c7bee9c698ead4f2fc24de18
MD5 hash: ae3250732fb37ba62e759f1dba9baddd
humanhash: blue-lake-gee-alaska
File name:payment slip.exe
Download: download sample
Signature AgentTesla
File size:773'632 bytes
First seen:2020-08-03 12:30:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 831ec412be4cd06baa632b18086fedb4 (12 x AgentTesla, 6 x MassLogger, 6 x Loki)
ssdeep 12288:HZnVKDTViiHWs0H/3b6Wx/wtmqOFOUW3WfxihtY/uOUs9f207:144isf3bXot2CWpRWH/07
Threatray 11'234 similar samples on MalwareBazaar
TLSH 63F4AF62B6F00936C1272A3C9C1B67749C29BF107A68B8766FF91C4C4F3969139F5293
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
71
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Launching a process
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Contains functionality to detect sleep reduction / modifications
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Drops VBS files to the startup folder
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
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)
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256163 Sample: payment slip.exe Startdate: 03/08/2020 Architecture: WINDOWS Score: 100 47 Detected unpacking (changes PE section rights) 2->47 49 Detected unpacking (creates a PE file in dynamic memory) 2->49 51 Detected unpacking (overwrites its own PE header) 2->51 53 7 other signatures 2->53 7 Mymp4.exe 2->7         started        10 Mymp4.exe 2->10         started        12 payment slip.exe 2->12         started        14 wscript.exe 1 2->14         started        process3 signatures4 73 Detected unpacking (changes PE section rights) 7->73 75 Detected unpacking (creates a PE file in dynamic memory) 7->75 77 Detected unpacking (overwrites its own PE header) 7->77 87 4 other signatures 7->87 16 Mymp4.exe 4 7->16         started        18 notepad.exe 1 7->18         started        79 Writes to foreign memory regions 10->79 81 Allocates memory in foreign processes 10->81 83 Maps a DLL or memory area into another process 10->83 20 Mymp4.exe 10->20         started        23 notepad.exe 10->23         started        85 Queues an APC in another process (thread injection) 12->85 26 notepad.exe 1 12->26         started        28 payment slip.exe 2 7 12->28         started        30 payment slip.exe 14->30         started        process5 file6 55 Tries to steal Mail credentials (via file access) 20->55 57 Tries to harvest and steal ftp login credentials 20->57 59 Tries to harvest and steal browser information (history, passwords, etc) 20->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->61 37 C:\Users\user\AppData\Roaming\...\k.vbs, ASCII 23->37 dropped 63 Drops VBS files to the startup folder 26->63 65 Delayed program exit found 26->65 39 C:\Users\user\AppData\Roaming\...\Mymp4.exe, PE32 28->39 dropped 41 C:\Users\user\...\Mymp4.exe:Zone.Identifier, ASCII 28->41 dropped 67 Writes to foreign memory regions 30->67 69 Allocates memory in foreign processes 30->69 71 Maps a DLL or memory area into another process 30->71 32 payment slip.exe 4 30->32         started        35 notepad.exe 1 30->35         started        signatures7 process8 signatures9 43 Tries to steal Mail credentials (via file access) 32->43 45 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->45
Threat name:
Win32.Trojan.LokiBot
Status:
Malicious
First seen:
2020-08-03 03:58:28 UTC
File Type:
PE (Exe)
Extracted files:
42
AV detection:
38 of 48 (79.17%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
upx keylogger stealer persistence spyware trojan family:agenttesla
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Drops startup file
Reads user/profile data of web browsers
Reads data files stored by FTP clients
UPX packed file
AgentTesla Payload
AgentTesla
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
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
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.

  
Delivery method
Other

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