MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6efd81dbe299d7f5bb1c741982a60524299d6592ab78fd83aefa79a8971af1d. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6efd81dbe299d7f5bb1c741982a60524299d6592ab78fd83aefa79a8971af1d
SHA3-384 hash: 9a11730508d1da22491c91fbe0313e435faa40f49faa998ec99b069e6a3a3777065a83e393a93c1573c2108d4cc10724
SHA1 hash: 882cf22ad4fbc8db052f878efa57c14317b7e4bb
MD5 hash: e3f3b424c27eb3344a35de4827aebbe2
humanhash: utah-vermont-north-ohio
File name:333rrrr333333Done.vbs
Download: download sample
Signature AgentTesla
Create hunting rule
File size:199'656 bytes
First seen:2023-01-04 20:15:18 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 3072:uHGRwfkYFEhNe4VTdRnTT8w4TWXZqWYbdHznXmxLJIrCsS4CYuGgseNyXYugjAe/:ZwfkYFYZq6
Threatray 19'864 similar samples on MalwareBazaar
TLSH T18214B052A3E95104F2F33F40A9FA55214B3BBED99C39C94D468C5AAD07E3940DCB2B63
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter mossdinger
Tags:AgentTesla vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
132
Origin country :
SE SE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/349479/
Detection(s):
SecuriteInfo.com.VBS.Obfuscated-GG.19911.25547.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm winrm.vbs
Link:
https://www.filescan.io/uploads/63b5de84b9b1c173752065fe/reports/dc4c9ef2-36c8-4528-bcda-5f74166dad98/overview
Result
Verdict:
UNKNOWN
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1145308
Signature
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
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: RegAsm connects to smtp port
Snort IDS alert for network traffic
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 778040 Sample: 333rrrr333333Done.vbs Startdate: 04/01/2023 Architecture: WINDOWS Score: 100 41 Snort IDS alert for network traffic 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 4 other signatures 2->47 9 wscript.exe 1 2->9         started        process3 signatures4 57 VBScript performs obfuscated calls to suspicious functions 9->57 59 Suspicious powershell command line found 9->59 61 Wscript starts Powershell (via cmd or directly) 9->61 12 powershell.exe 7 9->12         started        process5 signatures6 63 Suspicious powershell command line found 12->63 15 powershell.exe 14 15 12->15         started        19 conhost.exe 12->19         started        process7 dnsIp8 33 195.178.120.24, 49696, 80 HEXAGLOBE-ASFR unknown 15->33 35 Suspicious powershell command line found 15->35 37 Writes to foreign memory regions 15->37 39 Injects a PE file into a foreign processes 15->39 21 RegAsm.exe 2 15->21         started        25 powershell.exe 12 15->25         started        signatures9 process10 dnsIp11 29 keefort.com.ec 88.99.90.21, 49697, 587 HETZNER-ASDE Germany 21->29 31 192.168.2.1 unknown unknown 21->31 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->49 51 Tries to steal Mail credentials (via file / registry access) 21->51 53 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 21->53 55 Tries to harvest and steal browser information (history, passwords, etc) 21->55 27 conhost.exe 25->27         started        signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b6efd81dbe299d7f5bb1c741982a60524299d6592ab78fd83aefa79a8971af1d/
Threat name:
Script-WScript.Downloader.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2023-01-04 20:16:07 UTC
File Type:
Text (VBS)
AV detection:
4 of 39 (10.26%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w3x5qhn6fgox6w5ry5azqktakjbjtvszfk3y7wb256tzvclrv4oq._file
Verdict:
malicious
Similar samples:
584bd954035020f5bf4699ff5c1e345b915df35c618aaa85d70d8fd2666a5809
AgentTesla
6a62efe173a9eedf1175a22e079547b476828850019a0847491d0d6b61e7afb4
AgentTesla
857c7dc4b88d6fa4751d23d732784204fdf452114f4135437579e3cfe4ba452d
AgentTesla
a896460d87b28a154dc6d789298bc39545cf0569f2f32a3d5e92fd52d1777f23
AgentTesla
baf6ff9da2ad6da8d670a0c8e3203dc132f5c4ce57584c96c8a5f94550960982
AgentTesla
eb315f25a82f07dac9c40b3eac6db816a46ed3755f79d01a64c1681e148bee82
AgentTesla
f8b91c3419d4afe1cd3cdb4deffa3baa3f0e8dd92f41784d99497106075267d8
AgentTesla
+ 19'854 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection spyware stealer
Link:
https://tria.ge/reports/230104-y15e4sda4w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Malware Config
Dropper Extraction:
http://195.178.120.24/DLL.txt
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b6efd81dbe29/report/overview.html
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/b6efd81dbe299d7f5bb1c741982a60524299d6592ab78fd83aefa79a8971af1d

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
Rule name:SUSP_VBS_Wscript_Shell
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the definition of 'Wscript.Shell' which is often used by Malware, FPs are possible and commmon

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/349479/

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