MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 be732f090df2d1d81a25d0b42d6be124db61f3854fffc5f42c2294d80a83bd95. 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: be732f090df2d1d81a25d0b42d6be124db61f3854fffc5f42c2294d80a83bd95
SHA3-384 hash: 6b1d957372112b8f9fd4aab37cee2cf0dfbcc1b9b5b07169141933682d493ae378fc8e3ef18de5d19097ec478c32f106
SHA1 hash: 54d9f566fff05be59047e346b2b20ad6d99655de
MD5 hash: 63d94af08d7731b8358465d266dc9993
humanhash: butter-table-fourteen-twenty
File name:87041032.pdf.scr
Download: download sample
Signature AgentTesla
Create hunting rule
File size:914'432 bytes
First seen:2020-08-17 18:43:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'646 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:yS1QbvgWK5WpLverj1ZKYyR0ha7QAEVPg1b8qwHy3mxfTxQ8w:vQbvxaWFe3uYyR0ha7oPg1Z+YmNS
Threatray 10'621 similar samples on MalwareBazaar
TLSH 4915272939826E15D63E063010A896D2F373AD863E91C75F76DB4BCC7F0258B2B9605F
Reporter abuse_ch
Tags:AgentTesla scr


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: c7030220.vservers.es
Sending IP: 91.142.209.132
From: Agricola Livon <bogachdds@gmail.com>
Subject: FYI. PAGAMENTO DELLE FATTURE
Attachment: Payment_Forms 289048.img (contains "87041032.pdf.scr")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/47280/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a file
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created 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:
66 / 100
Link:
https://www.joesandbox.com/analysis/434612
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Sigma detected: Add file from suspicious location to autostart registry
Tries to detect virtualization through RDTSC time measurements
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: 269674 Sample: 87041032.pdf.scr Startdate: 18/08/2020 Architecture: WINDOWS Score: 66 35 Yara detected AgentTesla 2->35 37 Sigma detected: Add file from suspicious location to autostart registry 2->37 39 .NET source code contains very large array initializations 2->39 41 2 other signatures 2->41 7 87041032.pdf.exe 9 2->7         started        11 pcalua.exe 1 2->11         started        13 pcalua.exe 1 1 2->13         started        process3 file4 27 C:\Users\user\AppData\Roaming\mhie.exe, PE32 7->27 dropped 29 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->29 dropped 31 C:\Users\user\...\mhie.exe:Zone.Identifier, ASCII 7->31 dropped 33 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 7->33 dropped 45 Tries to detect virtualization through RDTSC time measurements 7->45 15 mhie.exe 3 7->15         started        18 cmd.exe 1 7->18         started        signatures5 process6 signatures7 47 Writes to foreign memory regions 15->47 49 Allocates memory in foreign processes 15->49 51 Tries to detect virtualization through RDTSC time measurements 15->51 53 Injects a PE file into a foreign processes 15->53 20 InstallUtil.exe 2 15->20         started        22 reg.exe 1 1 18->22         started        25 conhost.exe 18->25         started        process8 signatures9 43 Creates an autostart registry key pointing to binary in C:\Windows 22->43
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/be732f090df2d1d81a25d0b42d6be124db61f3854fffc5f42c2294d80a83bd95/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 10:05:23 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xzzs6cin6li5qgrf2c2c227betnwd44fj774l5bmekknqcudxwkq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'611 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200817-g86mcnfyna/
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:
1.00
Link:
https://yomi.yoroi.company/submissions/be732f090df2d1d81a25d0b42d6be124db61f3854fffc5f42c2294d80a83bd95

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

img f1848dbceda61c8d668f4bdd658a0ae6e3b3eb3ee818948459fa068c00ec487f

AgentTesla

Executable exe be732f090df2d1d81a25d0b42d6be124db61f3854fffc5f42c2294d80a83bd95

(this sample)

  
Dropped by
MD5 d7aaa290bc9f7a7bb6bef28579e3c24a
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/47280/
  
Dropped by
SHA256 f1848dbceda61c8d668f4bdd658a0ae6e3b3eb3ee818948459fa068c00ec487f

Comments