MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a801667a61c213228ab31b387e88e974b215e7494690adf17131476ca8c8f0c. 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: 8a801667a61c213228ab31b387e88e974b215e7494690adf17131476ca8c8f0c
SHA3-384 hash: cb34a04622434e2e9709defa2cebde732155f01bca1d88893f01c5b1abdab6a0f5aff2da486a663ac7fea0e4e5204ea4
SHA1 hash: b38f3e3a9ed1a1bd87061a602e6892bff64569ac
MD5 hash: 4eea8a8a63e27a218d0c166d626a2a80
humanhash: spring-lemon-item-oklahoma
File name:OC_5092417683.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:385'024 bytes
First seen:2020-07-17 16:02:52 UTC
Last seen:2020-07-17 17:23:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'753 x AgentTesla, 19'658 x Formbook, 12'249 x SnakeKeylogger)
ssdeep 6144:q8SINy14v11NVY5DW11w2pFvmfycIjoq21mK8zfn4eY16KZ0gvYOg4JkcQV36RxC:7SINy14v11NVY5DW11w2pcfEK8zfn4Tg
Threatray 10'658 similar samples on MalwareBazaar
TLSH 5484DF3823D1845AE4B9CABBBFB314989534EA4F6F12C3AF084DE8496D707C484C3E95
Reporter abuse_ch
Tags:AgentTesla exe HostGator


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: gateway24.websitewelcome.com
Sending IP: 192.185.50.93
From: Mariela Cortés <rburga@hikarisac.com>
Subject: ORDEN DE COMPRA
Attachment: OC_5092417683.cab (contains "OC_5092417683.exe")

AgentTesla SMTP exfil server:
web2.changeip.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
90
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/27461/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WOX.31552.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending an HTTP GET request
Creating a file in the %temp% subdirectories
Reading critical registry keys
Creating a file
Deleting a recently created file
Reading Telegram data
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a TCP request to an infection source
Stealing user critical data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/389134
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
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: RegAsm connects to smtp port
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 dynamic DNS services
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 246761 Sample: OC_5092417683.exe Startdate: 19/07/2020 Architecture: WINDOWS Score: 100 24 Found malware configuration 2->24 26 Multi AV Scanner detection for dropped file 2->26 28 Multi AV Scanner detection for submitted file 2->28 30 5 other signatures 2->30 6 OC_5092417683.exe 3 2->6         started        process3 file4 16 C:\Users\user\AppData\Roaming\app.exe, PE32 6->16 dropped 18 C:\Users\user\...\app.exe:Zone.Identifier, ASCII 6->18 dropped 20 C:\Users\user\...\OC_5092417683.exe.log, ASCII 6->20 dropped 32 Maps a DLL or memory area into another process 6->32 34 Hides that the sample has been downloaded from the Internet (zone.identifier) 6->34 10 RegAsm.exe 2 6->10         started        14 RegAsm.exe 6->14         started        signatures5 process6 dnsIp7 22 web2.changeip.com 67.21.94.4, 49715, 587 ST-BGPUS United States 10->22 36 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->36 38 Tries to steal Mail credentials (via file access) 10->38 40 Tries to harvest and steal ftp login credentials 10->40 42 Tries to harvest and steal browser information (history, passwords, etc) 10->42 44 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->44 46 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->46 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a801667a61c213228ab31b387e88e974b215e7494690adf17131476ca8c8f0c/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-07-17 16:04:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rkabmz5gdqqtekflggzyp2eos5fscxtusruqvxyxcmkhnsumr4ga._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'648 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200717-t3mvncs132/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Unknown
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8a801667a61c213228ab31b387e88e974b215e7494690adf17131476ca8c8f0c

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

cab e707d7265bd8c1dcb4ccc2975564d8b19adf6f87dee0f8dd4411de386590919b

AgentTesla

Executable exe 8a801667a61c213228ab31b387e88e974b215e7494690adf17131476ca8c8f0c

(this sample)

  
Dropped by
MD5 9a72c551ef825a21f1a7bdf17b740969
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/27461/
  
Dropped by
SHA256 e707d7265bd8c1dcb4ccc2975564d8b19adf6f87dee0f8dd4411de386590919b

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