MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c419d05b048adb0e0b133e5761aa3a9a89b011785c1e33542bd015aabeb2d42e. 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: c419d05b048adb0e0b133e5761aa3a9a89b011785c1e33542bd015aabeb2d42e
SHA3-384 hash: 61f7a52a9f1b06273609ed5c8ff191037e17cb2656feb5c433897bf44673d916ff3b5b34fe23e7198dc72d246f4bc458
SHA1 hash: ef70c6e6744651dc7617234a12d685317a0c8334
MD5 hash: 1b74ce47f3a075751a3d9b0d1bc68ab7
humanhash: august-bravo-lake-potato
File name:TT Transfer Copy_pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:468'480 bytes
First seen:2020-08-05 08:12:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:DsxmDT08Jeh2ATnX5RovXZ89++uw8AKBf:oxm885uXseHu5A
Threatray 10'619 similar samples on MalwareBazaar
TLSH 06A4F12C36A0611EF2BA1E3F5C3541838E27F85FDE66E24B29710179443E69CBC65FA1
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: blinux.thesecurededicatedserver.com
Sending IP: 198.52.104.94
From: Nerissa Lao Liwanag <laranerissa.liwanag@mizuho-cb.com>
Reply-To: account@mizuho-cb.com
Subject: 40% TT Transfer Copy
Attachment: TT Transfer Copy_pdf.iso (contains "TT Transfer Copy_pdf.exe")

AgentTesla SMTP exfil server:
smtp.blueskypaclficgroup.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
63
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39173/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.6711.UNOFFICIAL
Create hunting rule

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
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/410517
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
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 257521 Sample: TT Transfer Copy_pdf.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 66 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->66 68 Found malware configuration 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 9 other signatures 2->72 7 newapp.exe 3 2->7         started        10 TT Transfer Copy_pdf.exe 5 2->10         started        13 newapp.exe 2->13         started        process3 file4 74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->74 76 Machine Learning detection for dropped file 7->76 78 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->78 80 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->80 15 newapp.exe 2 7->15         started        19 schtasks.exe 1 7->19         started        40 C:\Users\user\AppData\Roaming\ZvlfZhiAv.exe, PE32 10->40 dropped 42 C:\Users\...\ZvlfZhiAv.exe:Zone.Identifier, ASCII 10->42 dropped 44 C:\Users\user\AppData\Local\...\tmpC63E.tmp, XML 10->44 dropped 46 C:\Users\...\TT Transfer Copy_pdf.exe.log, ASCII 10->46 dropped 82 Injects a PE file into a foreign processes 10->82 21 TT Transfer Copy_pdf.exe 2 5 10->21         started        24 schtasks.exe 1 10->24         started        26 schtasks.exe 13->26         started        28 newapp.exe 13->28         started        signatures5 process6 dnsIp7 48 smtp.blueskypaclficgroup.com 15->48 50 192.168.2.1 unknown unknown 15->50 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->56 58 Tries to steal Mail credentials (via file access) 15->58 60 Tries to harvest and steal ftp login credentials 15->60 62 Tries to harvest and steal browser information (history, passwords, etc) 15->62 30 conhost.exe 19->30         started        52 smtp.blueskypaclficgroup.com 21->52 54 us2.smtp.mailhostbox.com 208.91.198.143, 49748, 49749, 587 PUBLIC-DOMAIN-REGISTRYUS United States 21->54 36 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 21->36 dropped 38 C:\Users\user\...\newapp.exe:Zone.Identifier, ASCII 21->38 dropped 64 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->64 32 conhost.exe 24->32         started        34 conhost.exe 26->34         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c419d05b048adb0e0b133e5761aa3a9a89b011785c1e33542bd015aabeb2d42e/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 07:59:32 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqm5awyerlnq4cythzlwdkr2tke3aelylqpdgvbl2ak2vpvs2qxa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'609 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200805-hnz1ssvtrs/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c419d05b048adb0e0b133e5761aa3a9a89b011785c1e33542bd015aabeb2d42e

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

iso e33fbfe5dee91d5983f9d937e84b9a5476c82f5faba8d4c273a9ff5ec3630ec7

AgentTesla

Executable exe c419d05b048adb0e0b133e5761aa3a9a89b011785c1e33542bd015aabeb2d42e

(this sample)

  
Dropped by
MD5 16580bb3086ec9d32092efe5abee00f5
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39173/
  
Dropped by
SHA256 e33fbfe5dee91d5983f9d937e84b9a5476c82f5faba8d4c273a9ff5ec3630ec7

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