MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f71aec94caa4c0cd0aecd0efdc1e66b55ad85c13f4d125914fe14804e1bf54f5. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f71aec94caa4c0cd0aecd0efdc1e66b55ad85c13f4d125914fe14804e1bf54f5
SHA3-384 hash: 3b9773e9a0fbb11bac41ed99af1d24c54c6b6457362e9fa274bfaf5150070848de8e8b858308bbfdddd13cabebe80624
SHA1 hash: 503eea7753f1a14cb705a932cd654902973aae0e
MD5 hash: 6728e83545ea749e33ad6e83f90b6ba6
humanhash: winner-six-helium-butter
File name:VazBBV.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:733'184 bytes
First seen:2020-07-24 10:46:14 UTC
Last seen:2020-08-02 07:34:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:Q6gVShDE44QqzJ+K0IfStTwe0FW3reHv3M6WzSBDkO6hKiZ0l1q2GXvM689vFciM:S8m4k7f5e0arevZ1QD0adeT2sfgz+
Threatray 10'655 similar samples on MalwareBazaar
TLSH 44F43A393BC2A414D63E0B3244A96DD063B1B5873A52CB0F6AC7176C9F523DB3B0665E
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.etudiant.univ-mayotte.fr
Sending IP: 193.54.33.153
From: Elise VILLE <e.ville@mahler-beslse.com>
Subject: PO_10032885_Mahler-Besse_2_21_2020_1204
Attachment: PO_10032885_Mahler-Besse_2_21_2020_1204OscillatingVC.xlsm

AgentTesla payload URL:
http://www.agarca.donaines.pt//templates/beez3/VazBBV.exe

AgentTesla SMTP exfil server:
mail.fsicibd.com:587

Intelligence

File Origin
# of uploads :
5
# of downloads :
83
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/32157/
Detection(s):
SecuriteInfo.com.Trojan.GenericKDZ.68932.28668.5138.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/397262
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 250860 Sample: VazBBV.exe Startdate: 24/07/2020 Architecture: WINDOWS Score: 100 41 Found malware configuration 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected AgentTesla 2->45 47 2 other signatures 2->47 6 VazBBV.exe 3 2->6         started        10 BisquitBANK.exe 2 2->10         started        12 BisquitBANK.exe 1 2->12         started        process3 file4 25 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 6->25 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 AddInProcess32.exe 1 4 6->14         started        19 WerFault.exe 28 10 6->19         started        21 conhost.exe 10->21         started        23 conhost.exe 12->23         started        signatures5 process6 dnsIp7 31 mail.fsicibd.com 203.188.252.35, 49718, 587 ISN-AS-APISNInternetServiceProviderBD Bangladesh 14->31 27 C:\Users\user\AppData\...\BisquitBANK.exe, PE32 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 6 other signatures 14->39 29 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 19->29 dropped file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f71aec94caa4c0cd0aecd0efdc1e66b55ad85c13f4d125914fe14804e1bf54f5/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-24 10:48:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=64nozfgkutam2cxm2dx5yhtgwvnnqxat6tislekp4feajyn7kt2q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'645 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
spyware keylogger trojan stealer family:agenttesla persistence
Link:
https://tria.ge/reports/200724-vtgrh6dsxe/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Loads dropped DLL
Reads data files stored by FTP clients
Executes dropped EXE
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.78
Link:
https://yomi.yoroi.company/submissions/f71aec94caa4c0cd0aecd0efdc1e66b55ad85c13f4d125914fe14804e1bf54f5

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

Excel file xlsm f3007600575cca1f62f21c4698361fd33be002ea61c64ea82ca03afee1e0081b

AgentTesla

Executable exe f71aec94caa4c0cd0aecd0efdc1e66b55ad85c13f4d125914fe14804e1bf54f5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/418754/
  
Dropped by
MD5 249377ee8b5b4be7b650082422db87d2
  
Dropped by
SHA256 f3007600575cca1f62f21c4698361fd33be002ea61c64ea82ca03afee1e0081b
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/32157/

Comments