MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 defebb0452d939312ce8e3fd24d5b88a4614b4bad1b10251aaac75115b2f69a3. 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: 6


Intelligence 6 IOCs YARA File information Comments

SHA256 hash: defebb0452d939312ce8e3fd24d5b88a4614b4bad1b10251aaac75115b2f69a3
SHA3-384 hash: aabdf6f0d2502a0bbf6a0861464c7082a095bd96ef51be5d2be4c1e10398f9ed6b256ee8b368c7fa9efdf1b1df8ff093
SHA1 hash: a1aa8f3cc9b99eff6120f711e021db6ca3432981
MD5 hash: 6d84a10af01b3059cf93eee48adcd194
humanhash: burger-bluebird-kansas-tennis
File name:confirme.js
Download: download sample
Signature AgentTesla
File size:111'360 bytes
First seen:2023-07-21 06:24:19 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 3072:O0IIIIc0IIIIa0IIIIp0IIIId0IIIIL0IIIIV0IIIIH0IIIII0IIIIm0IIIIY0IT:H
TLSH T182B3BE0161EB61CC72B33B1657EF95D88F2BB6961B3A518E2148270F4B83E54CE56B33
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter abuse_ch
Tags:AgentTesla js


Avatar
abuse_ch
Payload URL:
https://uploaddeimagens.com.br/images/004/550/617/original/js.jpg

Intelligence


File Origin
# of uploads :
1
# of downloads :
275
Origin country :
NL NL
Vendor Threat Intelligence
Gathering data
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Signature
Creates autostart registry keys with suspicious values (likely registry only malware)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: RegAsm connects to smtp port
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1277328 Sample: confirme.js Startdate: 21/07/2023 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Sigma detected: RegAsm connects to smtp port 2->43 45 2 other signatures 2->45 8 wscript.exe 1 2->8         started        process3 signatures4 47 JScript performs obfuscated calls to suspicious functions 8->47 49 Suspicious powershell command line found 8->49 51 Wscript starts Powershell (via cmd or directly) 8->51 11 powershell.exe 15 17 8->11         started        process5 dnsIp6 25 uploaddeimagens.com.br 188.114.96.7, 443, 49698 CLOUDFLARENETUS European Union 11->25 53 Suspicious powershell command line found 11->53 55 Creates autostart registry keys with suspicious values (likely registry only malware) 11->55 57 Writes to foreign memory regions 11->57 59 2 other signatures 11->59 15 RegAsm.exe 2 11->15         started        19 powershell.exe 9 11->19         started        21 conhost.exe 11->21         started        signatures7 process8 dnsIp9 27 mail.grasscarpet.ae 162.241.224.191, 49700, 587 UNIFIEDLAYER-AS-1US United States 15->27 29 192.168.2.1 unknown unknown 15->29 31 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->31 33 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->33 35 Tries to steal Mail credentials (via file / registry access) 15->35 37 Tries to harvest and steal browser information (history, passwords, etc) 15->37 23 conhost.exe 19->23         started        signatures10 process11
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2023-07-21 06:25:06 UTC
File Type:
Text (JavaScript)
AV detection:
1 of 38 (2.63%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://uploaddeimagens.com.br/images/004/550/617/original/js.jpg?1689806287
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

AgentTesla

Java Script (JS) js defebb0452d939312ce8e3fd24d5b88a4614b4bad1b10251aaac75115b2f69a3

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments