MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b358b1ea537bc5e2dd3ddddbd1e9884770665569d5baaf20c2edb73cdd90ac60. 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: b358b1ea537bc5e2dd3ddddbd1e9884770665569d5baaf20c2edb73cdd90ac60
SHA3-384 hash: 628cd436ab7873d7c84a63dd4c4a76b850187deabcfefb4ccb7adebe60b30d87adff5d8125e00bfdfc547ab08cb2bedf
SHA1 hash: 6c55572f959edb53d9260f05bd4dcf3bb7a782c5
MD5 hash: 5fe5676bff55e8f0e704e3c39d175a45
humanhash: salami-bakerloo-skylark-charlie
File name:tttttttt.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'087'442 bytes
First seen:2020-07-30 10:10:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 24576:6NA3R5drXdtceBJIdJD8MvLBjiIZ7T6cM341jZFQYcHO6lI:z5bTBG3nWIZ7T6J341jZ63S
Threatray 9'346 similar samples on MalwareBazaar
TLSH 6B351202F7C284B1E5731C35493AA760AA7CBD306F34DE5FA7D45C6EEA351819221BA3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mx1uk.supremebox.com
Sending IP: 46.249.205.81
From: Ismail Temel <muhammad.p@shaklangroup.com>
Subject: Fwd: Re: Urgent Purchase Order
Attachment: PO.UUE (contains "tttttttt.exe")

AgentTesla SMTP exfil server:
smtp.mail.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/35461/
Detection(s):
Win.Malware.Autoit-7599063-0
Create hunting rule

SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file in the %temp% directory
Using the Windows Management Instrumentation requests
Reading critical registry keys
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
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/403507
Signature
Allocates memory in foreign processes
Contains functionality to register a low level keyboard hook
Drops PE files with a suspicious file extension
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
Sleep loop found (likely to delay execution)
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM autoit script
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 253981 Sample: tttttttt.exe Startdate: 30/07/2020 Architecture: WINDOWS Score: 100 37 g.msn.com 2->37 39 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->39 47 Found malware configuration 2->47 49 Yara detected AgentTesla 2->49 51 Yara detected AntiVM autoit script 2->51 8 tttttttt.exe 30 2->8         started        12 rekldrpoha.pif 2->12         started        14 rekldrpoha.pif 1 2->14         started        16 rekldrpoha.pif 2->16         started        signatures3 process4 file5 35 C:\87173223\rekldrpoha.pif, PE32 8->35 dropped 71 Drops PE files with a suspicious file extension 8->71 18 rekldrpoha.pif 1 3 8->18         started        22 RegSvcs.exe 12->22         started        25 RegSvcs.exe 2 14->25         started        27 RegSvcs.exe 16->27         started        signatures6 process7 dnsIp8 33 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 18->33 dropped 53 Writes to foreign memory regions 18->53 55 Allocates memory in foreign processes 18->55 57 Sleep loop found (likely to delay execution) 18->57 59 Injects a PE file into a foreign processes 18->59 29 RegSvcs.exe 2 18->29         started        41 smtp.mail.com 22->41 61 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->61 63 Tries to steal Mail credentials (via file access) 22->63 65 Tries to harvest and steal ftp login credentials 22->65 67 Tries to harvest and steal browser information (history, passwords, etc) 22->67 43 smtp.mail.com 25->43 69 Installs a global keyboard hook 25->69 file9 signatures10 process11 dnsIp12 45 smtp.mail.com 74.208.5.15, 49739, 49741, 49742 ONEANDONE-ASBrauerstrasse48DE United States 29->45 73 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 29->73 75 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 29->75 77 Tries to steal Mail credentials (via file access) 29->77 79 3 other signatures 29->79 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b358b1ea537bc5e2dd3ddddbd1e9884770665569d5baaf20c2edb73cdd90ac60/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-07-30 10:12:08 UTC
AV detection:
32 of 48 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wnmld2stppc6fxj53xn5d2mii5ygmvlj2w5k6igc5w3tzxmqvrqa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 9'336 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/200730-zn1qr5s9vj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Loads dropped DLL
Reads data files stored by FTP clients
Executes dropped EXE
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b358b1ea537bc5e2dd3ddddbd1e9884770665569d5baaf20c2edb73cdd90ac60

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

uue e9e232763c259e156c3a1f98d7289d54d09d66c126a17567ad12e8a850b92cbb

AgentTesla

Executable exe b358b1ea537bc5e2dd3ddddbd1e9884770665569d5baaf20c2edb73cdd90ac60

(this sample)

  
Dropped by
MD5 018e092fa76e8e385cfc7a7531133467
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 e9e232763c259e156c3a1f98d7289d54d09d66c126a17567ad12e8a850b92cbb
Cape
Cape
https://www.capesandbox.com/analysis/35461/

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