MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 099b24e1801dfdab9db3a4ccf2e57f187c119fd826b8645e6c494d3fda457721. 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
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SHA256 hash: 099b24e1801dfdab9db3a4ccf2e57f187c119fd826b8645e6c494d3fda457721
SHA3-384 hash: c5aa535be7ba24d1db1c5e170046a5c1f3fed7a059d4f939e4b0145df7f01037a936dbb2e47180dafbf8d33379c855d7
SHA1 hash: 4b53c5234353b12474597338d2d0c6abf9861ca7
MD5 hash: 54faae96db26732d8fcb30b45ed9dd5d
humanhash: nineteen-early-missouri-north
File name:Proforma Invoice pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:665'088 bytes
First seen:2020-09-19 05:26:21 UTC
Last seen:2020-09-19 06:36:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:ZnTqBYh2ppPFx5nbeEjut+Lfs5abDUqaNdl++r:nhCFxVFu8LfskbYjRr
Threatray 10'579 similar samples on MalwareBazaar
TLSH B0E4AD4032A97B1AE6798BF50214B472C3B114267266D3847F8321FEA2F6BD07E65F47
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/63633/
Detection(s):
SecuriteInfo.com.Trojan.Siggen10.23275.5472.26760.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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/470520
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
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
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: 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: 287693 Sample: Proforma Invoice pdf.exe Startdate: 19/09/2020 Architecture: WINDOWS Score: 100 64 Found malware configuration 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 Sigma detected: Scheduled temp file as task from temp location 2->68 70 13 other signatures 2->70 7 Proforma Invoice pdf.exe 6 2->7         started        11 YYtJku.exe 4 2->11         started        13 YYtJku.exe 5 2->13         started        process3 file4 42 C:\Users\user\AppData\Roaming\WibruevZ.exe, PE32 7->42 dropped 44 C:\Users\user\AppData\Local\...\tmp7408.tmp, XML 7->44 dropped 46 C:\Users\...\Proforma Invoice pdf.exe.log, ASCII 7->46 dropped 72 Injects a PE file into a foreign processes 7->72 15 Proforma Invoice pdf.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        22 YYtJku.exe 11->22         started        24 schtasks.exe 11->24         started        74 Multi AV Scanner detection for dropped file 13->74 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 13->76 78 Machine Learning detection for dropped file 13->78 80 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 13->80 26 YYtJku.exe 13->26         started        28 schtasks.exe 13->28         started        30 YYtJku.exe 13->30         started        signatures5 process6 dnsIp7 48 us2.smtp.mailhostbox.com 208.91.199.224, 49745, 587 PUBLIC-DOMAIN-REGISTRYUS United States 15->48 38 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 15->38 dropped 40 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 15->40 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 32 conhost.exe 20->32         started        50 208.91.199.223, 49764, 587 PUBLIC-DOMAIN-REGISTRYUS United States 22->50 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 34 conhost.exe 24->34         started        36 conhost.exe 28->36         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/099b24e1801dfdab9db3a4ccf2e57f187c119fd826b8645e6c494d3fda457721/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-09-18 10:26:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bgnsjymadx62xhntutgpfzl7db6bdh6ye24gixtmjfgt7wsfo4qq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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d6e1a688daa6611f7ff1ebf6724c3ccdabc18b97b1f606ec7bc141d8b81e1082
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f236155d74ebac339f1fc35ce210cc75b1c03a0b117f29ae9fef46140d188074
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f7ba15d4486470764977c2cf0efe0f9dd891da4b8cb423ba3b9a116e5d8300a3
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faa706545212465c95b5f5e3b8b86be591d00d55601c0cb0922812d7b20e658c
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fd427caee9d158cc48ba9b5a0ecd3243a77b354f07321a5f80e5fdcde17aed9f
AgentTesla
+ 10'569 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/200919-kys6je4sg6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
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:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/099b24e1801dfdab9db3a4ccf2e57f187c119fd826b8645e6c494d3fda457721

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

zip 0946fbe35bf360b6bbf9c6f32f0ad0e3630135daf698b64158c3a8a3d5dcf192

AgentTesla

Executable exe 099b24e1801dfdab9db3a4ccf2e57f187c119fd826b8645e6c494d3fda457721

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 0946fbe35bf360b6bbf9c6f32f0ad0e3630135daf698b64158c3a8a3d5dcf192
Cape
Cape
https://www.capesandbox.com/analysis/63633/

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