MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a304eb65d7aaf500fa186406ed9bd3f02394251010b24aec66ed92a0fd71d90. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a304eb65d7aaf500fa186406ed9bd3f02394251010b24aec66ed92a0fd71d90
SHA3-384 hash: 7a4fa78e9e50f2ec8d381da52890a8d971771bf351b3bab48baf6d20f466cff27c0c80045bc22840089bbb7f9a91cedb
SHA1 hash: 6e0692aa1ce8fb1d67bfffa0561fdfb2c3a35912
MD5 hash: 2e33fb697e29b12ade0ec2ab18a9abe3
humanhash: lion-high-oscar-autumn
File name:TOYO_Ms General conditio.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:433'152 bytes
First seen:2020-08-05 09:06:51 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 6144:buLOeJrUlW1U5vOO7OKxbkiL+Nh9fJCiAj2PZEZtA4sikKFGv6gBmXnrU18cM8Eq:aLri5mOi9u+pE32PZE44YsPgybbbfm
Threatray 10'631 similar samples on MalwareBazaar
TLSH E394F12C36A0614DF1BA1E3F4C341583DE62F94FDE21C28B1A7216B9447E2ACBC65F61
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: webmail.cyber.net.pk
Sending IP: 203.101.175.37
From: Toyo Engineering & Construction Sdn Bhd <jjhyd@cyber.net.pk>
Subject: RE: TOYO ENGINEERING FINAL REMINDER [PR742 BIO-MEG] AYBF001 Hot Oil Heater / RFQ / Toyo Engineering & Construction Sdn. Bhd
Attachment: TOYO_Ms General conditio.zip (contains "TOYO_Ms General conditio.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
69
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39291/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
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
Moving of the original file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410721
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257628 Sample: TOYO_Ms General conditio.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Yara detected AgentTesla 2->45 47 Yara detected AntiVM_3 2->47 49 5 other signatures 2->49 6 TOYO_Ms General conditio.exe 1 2->6         started        10 YYtJku.exe 2->10         started        12 YYtJku.exe 1 2->12         started        process3 file4 23 C:\Users\...\TOYO_Ms General conditio.exe.log, ASCII 6->23 dropped 51 Injects a PE file into a foreign processes 6->51 14 TOYO_Ms General conditio.exe 2 5 6->14         started        19 YYtJku.exe 2 10->19         started        53 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->53 55 Machine Learning detection for dropped file 12->55 57 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->57 21 YYtJku.exe 2 12->21         started        signatures5 process6 dnsIp7 29 us2.smtp.mailhostbox.com 208.91.199.223, 49746, 49748, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->29 25 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 14->25 dropped 27 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 14->27 dropped 31 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->31 33 Moves itself to temp directory 14->33 35 Tries to steal Mail credentials (via file access) 14->35 37 Tries to harvest and steal ftp login credentials 19->37 39 Tries to harvest and steal browser information (history, passwords, etc) 19->39 41 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->41 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6a304eb65d7aaf500fa186406ed9bd3f02394251010b24aec66ed92a0fd71d90/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 09:08:08 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=niye5ns5pkxvad5bqzag5wn5h4bdsqsraefsjlwgn3msud6xdwia._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
068e2be03e22687430eff635ad02df7c819f320888095cf4879802cfdbd83353
AgentTesla
150d964fbfa64a31d6d9846500d2353e2aab67c7664cd222244c8e97c8e24b95
AgentTesla
1b7f039e2beb71993aa281ed8137e45b1b9708531b54e3b46d347baa3cc6fc67
AgentTesla
5154fa2ab923d2c482778140eb4953ed8a225dbe6eaecbd4f6c9cf8e14623e85
AgentTesla
5568d3bb30cd70393319ec43fcbcb78e1d5750445867a0101c5ec8643cca6f62
AgentTesla
844011c676208303cf9a895ad7d5ba4ec4a4fb9f905311a1b3baec0884b34f1c
AgentTesla
8707af08ec5c7b76ea40346f7b62861080f534fc2438a30cda18260563a7c16e
AgentTesla
9592819cdc450184fb43c9686103f9955acb5a71e3dcded2d223e7af609b7db0
AgentTesla
9ab48a539aad8c6729c441a0a32ad02039802420bada44d2bf8aec052255dbde
AgentTesla
ccfbbefb33733978fd04e44d58d874c1ce2ec38f0d8568a0b105bc138f72f2e1
AgentTesla
+ 10'621 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/200805-mjwkk62qvn/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/6a304eb65d7aaf500fa186406ed9bd3f02394251010b24aec66ed92a0fd71d90

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

zip 7da8366128fc796c5973bad384fbb8863bb2cbf14b4f1230acc3a395db190141

AgentTesla

Executable exe 6a304eb65d7aaf500fa186406ed9bd3f02394251010b24aec66ed92a0fd71d90

(this sample)

  
Dropped by
MD5 1d663545f01c4fa53f31ee542e8f7e53
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39291/
  
Dropped by
SHA256 7da8366128fc796c5973bad384fbb8863bb2cbf14b4f1230acc3a395db190141

Comments