MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb37be21494cfba85059697c773673327b63d4454f5465004b5ee168a6edbec8. 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: bb37be21494cfba85059697c773673327b63d4454f5465004b5ee168a6edbec8
SHA3-384 hash: 23feefa6fbcc545dc3057e1aac8dfef2c9f6d092537b5501842d748b90d19f801d2e3a76fd56f25902bfb907b73880d2
SHA1 hash: 370470adab077a694abe2712ea3ac43b16e83456
MD5 hash: 99a528f9b99f5ed5313f74b823329999
humanhash: finch-burger-winter-october
File name:signed contract.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:439'296 bytes
First seen:2020-07-10 07:28:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:oidHUZStqOzZS7O5BGsp3vNtY82JWux9XeCj0MPR:vx3qOzZSaqsp3vLYpWs9Xf
Threatray 10'611 similar samples on MalwareBazaar
TLSH C894019876F4B39FC4ABC7B18F201C20A770366A8327D6265C8355DA1A5CFC6DF506A3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: maderoequipos.com
Sending IP: 37.49.230.212
From: Lucy Anderson <donaldo@maderoequipos.com>
Subject: Signed Contract Invoice
Attachment: signed contract.Z (contains "signed contract.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/24283/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bb37be21494cfba85059697c773673327b63d4454f5465004b5ee168a6edbec8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-10 04:57:28 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xm334ikjjt52qucznf6honttgj5whvcfj5kgkacll3qwrjxnx3ea._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 10'601 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger trojan stealer spyware family:agenttesla persistence
Link:
https://tria.ge/reports/200710-zqvszdnz6j/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run entry to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email 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

z c3c7da68e3fc39878793e3c729171372d410fc81394b3c39dec69dce9169c1ca

AgentTesla

Executable exe bb37be21494cfba85059697c773673327b63d4454f5465004b5ee168a6edbec8

(this sample)

  
Dropped by
MD5 5adb7b5bc3f372264dc713dcc042eb6f
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 c3c7da68e3fc39878793e3c729171372d410fc81394b3c39dec69dce9169c1ca
Cape
Cape
https://www.capesandbox.com/analysis/24283/

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