MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 712375dfdeacf96c7b08b655da383ebaa6843b012748c575fe310c8a3a33ccdd. 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: 712375dfdeacf96c7b08b655da383ebaa6843b012748c575fe310c8a3a33ccdd
SHA3-384 hash: f8a4e3dcdc431143e33fa1892fd21647983653c49f675562a5b10de776c31457edc2a4eb0d46eb449f02177e8589bcac
SHA1 hash: 540c77ca5e982aa2970c9e25d41a82ad567a67c8
MD5 hash: cec569f06f59952553854b6677247862
humanhash: carbon-winner-sink-fruit
File name:New Order pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:471'040 bytes
First seen:2020-08-05 08:31:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:6SPIfWXH0VBPDyc8T247i+B7Mt6ALbbBCg2JpwGBq:6kXm7O2vWiD1T28G
Threatray 10'626 similar samples on MalwareBazaar
TLSH 10A4F00D37D02659F6BA0E7F9D7005838D22F45FCE22D24F6ABA1168057EA9CBD60F61
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: bfcold.com
Sending IP: 23.106.223.209
From: Ling<beifeng@bfcold.com>
Subject: Request For New Order
Attachment: New Order pdf 7Z.rar (contains "New Order pdf.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
57
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39216/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410586
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Moves itself to temp directory
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: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257561 Sample: New Order pdf.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 64 Found malware configuration 2->64 66 Sigma detected: Scheduled temp file as task from temp location 2->66 68 Yara detected AgentTesla 2->68 70 9 other signatures 2->70 7 New Order pdf.exe 5 2->7         started        11 YYtJku.exe 3 2->11         started        13 YYtJku.exe 2->13         started        process3 file4 40 C:\Users\user\AppData\...\CAKZvIaYCDVzw.exe, PE32 7->40 dropped 42 C:\...\CAKZvIaYCDVzw.exe:Zone.Identifier, ASCII 7->42 dropped 44 C:\Users\user\AppData\Local\...\tmp44CE.tmp, XML 7->44 dropped 46 C:\Users\user\...46ew Order pdf.exe.log, ASCII 7->46 dropped 72 Injects a PE file into a foreign processes 7->72 15 New Order pdf.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 11->74 76 Machine Learning detection for dropped file 11->76 78 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 11->78 22 YYtJku.exe 2 11->22         started        24 schtasks.exe 1 11->24         started        26 YYtJku.exe 11->26         started        28 schtasks.exe 13->28         started        signatures5 process6 dnsIp7 48 us2.smtp.mailhostbox.com 208.91.198.143, 49731, 49740, 587 PUBLIC-DOMAIN-REGISTRYUS United States 15->48 50 192.168.2.1 unknown unknown 15->50 36 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 15->36 dropped 38 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 15->38 dropped 52 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->52 54 Moves itself to temp directory 15->54 56 Tries to steal Mail credentials (via file access) 15->56 30 conhost.exe 20->30         started        58 Tries to harvest and steal ftp login credentials 22->58 60 Tries to harvest and steal browser information (history, passwords, etc) 22->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->62 32 conhost.exe 24->32         started        34 conhost.exe 28->34         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/712375dfdeacf96c7b08b655da383ebaa6843b012748c575fe310c8a3a33ccdd/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 05:12:00 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=oerxlx66vt4wy6yiwzk5uob6xktiioybe5emk5p6gegiuortztoq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'616 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200805-nmslccwwqx/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
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 Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/712375dfdeacf96c7b08b655da383ebaa6843b012748c575fe310c8a3a33ccdd

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 12044c14e75838d73382e1c2b29eb30d24df6c236a65dfdd738ff783fadbc8e9

AgentTesla

Executable exe 712375dfdeacf96c7b08b655da383ebaa6843b012748c575fe310c8a3a33ccdd

(this sample)

  
Dropped by
MD5 9a5363d329096a1100465ec40e4fe60c
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39216/
  
Dropped by
SHA256 12044c14e75838d73382e1c2b29eb30d24df6c236a65dfdd738ff783fadbc8e9

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