MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dcf99ebbcd1b376ef9c95164a9ff49dc7659bde25801b1787de4f0cfffb2f83. 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: 10


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: 4dcf99ebbcd1b376ef9c95164a9ff49dc7659bde25801b1787de4f0cfffb2f83
SHA3-384 hash: 48ebd9d8818360095b36ab93130c8950f3e145f25373781a5506c59760fc767ac3a55601dbca24f2a224218704f585aa
SHA1 hash: a23c30f7dc50e867510751f9bb11b0ec2fdb2688
MD5 hash: b42c66f7175f3219e22f050999b09546
humanhash: hamper-four-foxtrot-potato
File name:nigazxbb.vbs
Download: download sample
Signature AgentTesla
File size:326'896 bytes
First seen:2023-09-18 18:49:56 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 6144:avvvvvhX7u7W7nggMvvvvvLvvvvvwvvvvvxvvvvvNvvvvv8vvvvvDvvvvv3deDux:avvvvvhX7u7W7nggMvvvvvLvvvvvwvvC
Threatray 5'625 similar samples on MalwareBazaar
TLSH T15C64CE2125EF644DB1B37F631BD8B6E58F6FFBB2161B61AD240043078B55D80CEA5A32
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter James_inthe_box
Tags:AgentTesla vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
96
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
remcos
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
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: Powershell download and load assembly
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)
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1310298 Sample: nigazxbb.vbs Startdate: 18/09/2023 Architecture: WINDOWS Score: 100 32 Found malware configuration 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 7 other signatures 2->38 8 wscript.exe 1 2->8         started        process3 signatures4 48 VBScript performs obfuscated calls to suspicious functions 8->48 50 Suspicious powershell command line found 8->50 52 Wscript starts Powershell (via cmd or directly) 8->52 54 3 other signatures 8->54 11 powershell.exe 7 8->11         started        process5 signatures6 56 Suspicious powershell command line found 11->56 58 Found suspicious powershell code related to unpacking or dynamic code loading 11->58 14 powershell.exe 14 15 11->14         started        18 conhost.exe 11->18         started        process7 dnsIp8 28 uploaddeimagens.com.br 104.21.45.138, 443, 49697 CLOUDFLARENETUS United States 14->28 30 80.76.51.248, 49698, 80 CLOUDCOMPUTINGDE Bulgaria 14->30 60 Writes to foreign memory regions 14->60 62 Injects a PE file into a foreign processes 14->62 20 RegAsm.exe 2 14->20         started        24 RegAsm.exe 14->24         started        signatures9 process10 dnsIp11 26 evantelamin.top 185.244.151.84, 49699, 49700, 587 HSAE Netherlands 20->26 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->40 42 Tries to steal Mail credentials (via file / registry access) 20->42 44 Tries to harvest and steal browser information (history, passwords, etc) 20->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 24->46 signatures12
Threat name:
Script-WScript.Trojan.Heuristic
Status:
Malicious
First seen:
2023-09-12 10:57:34 UTC
File Type:
Text (VBS)
AV detection:
6 of 23 (26.09%)
Threat level:
  2/5
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
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855
Malware family:
AgentTesla.v4
Verdict:
Malicious
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.

Comments