MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4e59356ba0c28a4f4ec04a606ca248e635ff82486b252c12f0060e414f84b38. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4e59356ba0c28a4f4ec04a606ca248e635ff82486b252c12f0060e414f84b38
SHA3-384 hash: 347d655a145b34e96a623b02c9d0c6ada827edff722d920a57627a4f520c09e8d3812f58aa2e481a4456b1b763e97588
SHA1 hash: f3456cf60a28aa1647750db7cd0c299a7b7f75ec
MD5 hash: 25a4df88b970fcca18b2085f4d4170f9
humanhash: video-tennis-five-don
File name:upnxIVxCnyXyWyW.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:951'296 bytes
First seen:2021-06-02 05:48:18 UTC
Last seen:2021-06-02 06:39:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Ioi9vTsyN0bgthmBOwY6T18fVqTA//B3t3vAmywvvoyq8gIlpf373Oj8l0QejuIg:vjyN0EmNT1ML/X/yaoylpij8lNKg
Threatray 5'486 similar samples on MalwareBazaar
TLSH 60157CF4F96898F6C19DCB71C2C4ADAEE7A142FE1203C95C29A596CC1F4378E9F49424
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
upnxIVxCnyXyWyW.exe
Verdict:
Suspicious activity
Analysis date:
2021-06-02 03:46:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/bad438d5-2af2-49bc-b7af-9b0465a90a75

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/163913/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/795623
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for sample
Modifies the hosts 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 Process Start Without DLL
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 428019 Sample: upnxIVxCnyXyWyW.exe Startdate: 02/06/2021 Architecture: WINDOWS Score: 100 41 Found malware configuration 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->45 47 8 other signatures 2->47 6 upnxIVxCnyXyWyW.exe 3 2->6         started        10 NXLun.exe 2 2->10         started        12 NXLun.exe 1 2->12         started        process3 file4 23 C:\Users\user\...\upnxIVxCnyXyWyW.exe.log, ASCII 6->23 dropped 49 Writes to foreign memory regions 6->49 51 Allocates memory in foreign processes 6->51 53 Injects a PE file into a foreign processes 6->53 14 RegSvcs.exe 2 4 6->14         started        19 conhost.exe 10->19         started        21 conhost.exe 12->21         started        signatures5 process6 dnsIp7 29 priserveinfra.com 50.31.160.189, 49739, 587 SERVERCENTRALUS United States 14->29 31 mail.priserveinfra.com 14->31 25 C:\Users\user\AppData\Roaming\...25XLun.exe, PE32 14->25 dropped 27 C:\Windows\System32\drivers\etc\hosts, ASCII 14->27 dropped 33 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->33 35 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->35 37 Tries to steal Mail credentials (via file access) 14->37 39 5 other signatures 14->39 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f4e59356ba0c28a4f4ec04a606ca248e635ff82486b252c12f0060e414f84b38/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-06-01 20:41:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
14 of 29 (48.28%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6tszgvv2bqukj5hmastansrerzrv76beq2zffqjpabqoifhyjm4a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 5'476 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210602-pvs38l6c9s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f4e59356ba0c28a4f4ec04a606ca248e635ff82486b252c12f0060e414f84b38

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

AgentTesla

zip c487e0966a7da9a3f515bb1109571d6bbedf1464b1cfc7faf2df3c71b0ccaeca

AgentTesla

Executable exe f4e59356ba0c28a4f4ec04a606ca248e635ff82486b252c12f0060e414f84b38

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c487e0966a7da9a3f515bb1109571d6bbedf1464b1cfc7faf2df3c71b0ccaeca
Cape
Cape
https://www.capesandbox.com/analysis/163913/

Comments