MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b91f298cfdb9541f0d548a38576e37012c645926ab3383d21677087c107b52f. 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: 3b91f298cfdb9541f0d548a38576e37012c645926ab3383d21677087c107b52f
SHA3-384 hash: 90bb473e183f49cdf5ab6c08876a36bcbdc5a5a63ac93c8a9486e8a9a89edf00a06e0ad98c466ae431ace5a57e20b724
SHA1 hash: 4b7fbce0e12551ba62702fd1a20041caa9fc8575
MD5 hash: 1393fb7819f6038dba4822d3fa0b34da
humanhash: ack-pennsylvania-three-victor
File name:New Iquiry.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:565'760 bytes
First seen:2020-07-16 06:31:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:BD7y2k4zUj7v+jO9CD1iofJGelbRhzyzwYEZ4K4:9uT+q94fJ1d2
Threatray 11'108 similar samples on MalwareBazaar
TLSH 50C48CDC3510759EC80E8D768964DC70A6202C66F7FBD20663C72E9FB93D687CB152A2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: windows24.internet-webhosting.com
Sending IP: 103.8.25.242
From: MRH MARINE <operation@mrhmarine.com.my>
Subject: FW: # URGENT **New Iquiry
Attachment: New Iquiry.arj (contains "New Iquiry.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/26359/
Detection(s):
SecuriteInfo.com.CAP_HookExKeylogger.3499.23685.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
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
Enabling autorun with Startup directory
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b91f298cfdb9541f0d548a38576e37012c645926ab3383d21677087c107b52f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-16 06:33:05 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hoi7fggp3okud4gvjcryk5xdoajmmrmsnkztqpjbm5yipqihwuxq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 11'098 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
persistence spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200716-llvfswgdvs/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
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
Reads data files stored by FTP clients
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.

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

arj c20c89ac40a184b9ccb5470083beb1ea1941dbdf1c6cc9e088d43865706e357b

AgentTesla

Executable exe 3b91f298cfdb9541f0d548a38576e37012c645926ab3383d21677087c107b52f

(this sample)

  
Dropped by
MD5 8c807ceea808048d226e9756b8e3252b
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/26359/
  
Dropped by
SHA256 c20c89ac40a184b9ccb5470083beb1ea1941dbdf1c6cc9e088d43865706e357b

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