MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90358a03f8a15f765f95c720f314d9ad8178e6ed93fff8ad9bb023630f0bd44a. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 90358a03f8a15f765f95c720f314d9ad8178e6ed93fff8ad9bb023630f0bd44a
SHA3-384 hash: 49ec7330c2c28a5cfff64aee0406e39e2895d1bf9747756fb7713b59293d3fb5d2979b8603664534752d066b076990c0
SHA1 hash: 871bd2e4846853ea21b7f1c272697fd11c6cccd9
MD5 hash: 780c0f46efd7a3d02bc149f13a35e8fc
humanhash: helium-sad-snake-washington
File name:SPA24173-1.jpg.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:666'624 bytes
First seen:2020-08-04 11:58:08 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 6144:wHAgbCa8sGQTwny5oLTFfcwj+vUiFqagVkbSppHjkpuc7+p0bU:wHX8kTVcfc6efMagVkbSgEcRU
Threatray 10'947 similar samples on MalwareBazaar
TLSH 85E4293D3A83B805D83D097588A859D072B5BD477B01C70F3A8A279C6F7729B2B4719B
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: p3965429.pubip.peer1.net
Sending IP: 83.222.252.185
From: Zetex Corporation <zetex@emirates.net.ae>
Subject: UK Order
Attachment: SPA24173-1.z (contains "SPA24173-1.jpg.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38626/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/409335
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Injects a PE file into a foreign processes
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: Add file from suspicious location to autostart registry
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257179 Sample: SPA24173-1.jpg.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 96 34 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->34 36 Yara detected AgentTesla 2->36 38 Sigma detected: Add file from suspicious location to autostart registry 2->38 40 2 other signatures 2->40 7 SPA24173-1.jpg.exe 7 2->7         started        10 pcalua.exe 1 2->10         started        12 pcalua.exe 1 1 2->12         started        process3 file4 28 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 7->28 dropped 30 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->30 dropped 32 C:\Users\user\...\newapp.exe:Zone.Identifier, ASCII 7->32 dropped 14 newapp.exe 2 7->14         started        17 cmd.exe 1 7->17         started        19 newapp.exe 3 10->19         started        process5 signatures6 48 Writes to foreign memory regions 14->48 50 Allocates memory in foreign processes 14->50 52 Injects a PE file into a foreign processes 14->52 21 InstallUtil.exe 2 14->21         started        24 reg.exe 1 1 17->24         started        26 conhost.exe 17->26         started        process7 signatures8 42 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->42 44 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 21->44 46 Creates an autostart registry key pointing to binary in C:\Windows 24->46
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/90358a03f8a15f765f95c720f314d9ad8178e6ed93fff8ad9bb023630f0bd44a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 12:00:08 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sa2yua7yufpxmx4vy4qpgfgzvwaxrzxnsp77rlm3warwgdyl2rfa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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b82d04c79bfd870dd7024db85a5c3c60827776af6bfd6b73306ceebf72150ba4
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d3e579b62c6877384f6ed9da7d86aea05ff6b881c141470ec7858fe9f0d992a9
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e90c07313d393becfb64e2c5b80b0440f2689fc7bd77b7dadf761dd3aa128f98
AgentTesla
+ 10'937 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200804-xbcqy6aebe/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/90358a03f8a15f765f95c720f314d9ad8178e6ed93fff8ad9bb023630f0bd44a

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

MassLogger

z f797f2917396d6ff966710399a2cd52f1e1d8a07aaae62b9d34e69521cb88f82

AgentTesla

Executable exe 90358a03f8a15f765f95c720f314d9ad8178e6ed93fff8ad9bb023630f0bd44a

(this sample)

  
Dropped by
MD5 86f20f57483574c7fd4943ce0de31338
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38626/
  
Dropped by
SHA256 f797f2917396d6ff966710399a2cd52f1e1d8a07aaae62b9d34e69521cb88f82

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