MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 358d4134136cd4473bfbac7f71e7eb4529045a44f0aca04cee35ba2e0c5d783a. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 358d4134136cd4473bfbac7f71e7eb4529045a44f0aca04cee35ba2e0c5d783a
SHA3-384 hash: 8e33adbbfe043947ed7f1e2e92f274506fdd089be9473e4d3e35131b2af4fc18a7e9fa1c53a6353df5b6798a54b4c1cc
SHA1 hash: 9de3d1ea97b8753550a067c66adf11ef2d9686fb
MD5 hash: 06da760a5f62abebc57a8a015fc00fa7
humanhash: carolina-comet-march-helium
File name:Bank Report.Doc.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:531'456 bytes
First seen:2020-08-30 08:52:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:RIucgu/YO5p1qjcDZaxzYhoxGmZk4EEfuzMD:e+5OXXZaihITxfPD
Threatray 10'639 similar samples on MalwareBazaar
TLSH C8B4011136ED6709E1ED2BF405BE754083B87E2D6236E21D1DC570EE66B6B408226F3B
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: server.thebricspost.com
Sending IP: 64.15.138.14
From: ACCOUNT DEPARTMENT <info@marahotels.com>
Subject: Re: Distributing Inquiry(Top Urgent)
Attachment: Bank Report.Doc.r09 (contains "Bank Report.Doc.exe")

AgentTesla SMTP exfil server:
smtp.coffiices.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/53081/
Detection(s):
SecuriteInfo.com.W32.Trojan-7.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/454534
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Modifies the hosts file
Multi AV Scanner detection for dropped 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: Scheduled temp file as task from temp location
Sigma detected: Suspicious Double Extension
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279639 Sample: Bank Report.Doc.exe Startdate: 30/08/2020 Architecture: WINDOWS Score: 100 65 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->65 67 Found malware configuration 2->67 69 Multi AV Scanner detection for dropped file 2->69 71 11 other signatures 2->71 8 Bank Report.Doc.exe 7 2->8         started        12 goICPG.exe 4 2->12         started        14 goICPG.exe 5 2->14         started        process3 file4 51 C:\Users\user\AppData\Roaming\kBaWPAg.exe, PE32 8->51 dropped 53 C:\Users\user\AppData\Local\...\tmp31C5.tmp, XML 8->53 dropped 55 C:\Users\user\...\Bank Report.Doc.exe.log, ASCII 8->55 dropped 85 Injects a PE file into a foreign processes 8->85 16 Bank Report.Doc.exe 2 5 8->16         started        21 schtasks.exe 1 8->21         started        23 Bank Report.Doc.exe 8->23         started        25 goICPG.exe 12->25         started        27 schtasks.exe 12->27         started        87 Multi AV Scanner detection for dropped file 14->87 89 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->89 91 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->91 29 schtasks.exe 1 14->29         started        31 goICPG.exe 14->31         started        33 goICPG.exe 14->33         started        signatures5 process6 dnsIp7 57 smtp.coffiices.com 16->57 59 us2.smtp.mailhostbox.com 208.91.198.143, 49738, 49753, 587 PUBLIC-DOMAIN-REGISTRYUS United States 16->59 45 C:\Users\user\AppData\Roaming\...\goICPG.exe, PE32 16->45 dropped 47 C:\Windows\System32\drivers\etc\hosts, ASCII 16->47 dropped 49 C:\Users\user\...\goICPG.exe:Zone.Identifier, ASCII 16->49 dropped 73 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->73 75 Tries to steal Mail credentials (via file access) 16->75 77 Modifies the hosts file 16->77 35 reg.exe 16->35         started        37 conhost.exe 21->37         started        61 smtp.coffiices.com 25->61 63 192.168.2.1 unknown unknown 25->63 79 Tries to harvest and steal ftp login credentials 25->79 81 Tries to harvest and steal browser information (history, passwords, etc) 25->81 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->83 39 conhost.exe 27->39         started        41 conhost.exe 29->41         started        file8 signatures9 process10 process11 43 conhost.exe 35->43         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/358d4134136cd4473bfbac7f71e7eb4529045a44f0aca04cee35ba2e0c5d783a/
Threat name:
ByteCode-MSIL.Trojan.Sudloader
Create hunting rule
Status:
Malicious
First seen:
2020-08-29 13:26:39 UTC
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gwgucnatntkeoo73vr7xdz7liuuqiwse6cwkathogw5c4dc5pa5a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'629 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200830-n2gnvqtbrx/
Behaviour
Creates scheduled task(s)
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
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:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/358d4134136cd4473bfbac7f71e7eb4529045a44f0aca04cee35ba2e0c5d783a

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

r09 83ddb0a41496299c644b87568789339017e0cb7ecb4fcfb6341c41992695f1a0

AgentTesla

Executable exe 358d4134136cd4473bfbac7f71e7eb4529045a44f0aca04cee35ba2e0c5d783a

(this sample)

  
Dropped by
MD5 a323c55871d3041cb09342c6b1b0229e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/53081/
  
Dropped by
SHA256 83ddb0a41496299c644b87568789339017e0cb7ecb4fcfb6341c41992695f1a0

Comments