MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3bf2a45f175383ad227ebea15852cd9908abb78f7e482ab924c40aaab18050b. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3bf2a45f175383ad227ebea15852cd9908abb78f7e482ab924c40aaab18050b
SHA3-384 hash: e300c6a879b065394cae95cce13c85d5b286db0c5aa5a455d65e45fb11839077a5ec7dc9a8456a5322a63a10758d3996
SHA1 hash: e9c6517a7b0970724fc39acfcee96804ed04ad74
MD5 hash: a1b8df84ec472bfe54e228744ea4c7bb
humanhash: william-monkey-twenty-michigan
File name:RF-11739.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:461'824 bytes
First seen:2020-10-27 20:12:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:WlzdTZ4rjNxG/i/OfFGr6lDU368bC9q50sAMCcNltIQtQG6SUJxuW:WV/4rjvGiO9C6xp8bCo0cNl5exSUJxu
Threatray 817 similar samples on MalwareBazaar
TLSH CCA4AFB27D52587ECA6F077541AA85C0FAB616C73FA08B0D71AF430C0E11A2BEB57647
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80132/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Running batch commands
Launching a process
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:
80 / 100
Link:
https://www.joesandbox.com/analysis/514171
Signature
.NET source code contains very large array initializations
Creates an autostart registry key pointing to binary in C:\Windows
Drops PE files to the user root directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306197 Sample: RF-11739.exe Startdate: 27/10/2020 Architecture: WINDOWS Score: 80 33 Multi AV Scanner detection for submitted file 2->33 35 Yara detected AgentTesla 2->35 37 .NET source code contains very large array initializations 2->37 7 RF-11739.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\gbsg.exe, PE32 7->27 dropped 29 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 7->29 dropped 31 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->31 dropped 45 Drops PE files to the user root directory 7->45 47 Tries to detect virtualization through RDTSC time measurements 7->47 15 cmd.exe 1 7->15         started        17 gbsg.exe 2 7->17         started        19 gbsg.exe 3 11->19         started        signatures5 process6 signatures7 22 reg.exe 1 1 15->22         started        25 conhost.exe 15->25         started        39 Multi AV Scanner detection for dropped file 19->39 41 Tries to detect virtualization through RDTSC time measurements 19->41 process8 signatures9 43 Creates an autostart registry key pointing to binary in C:\Windows 22->43
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3bf2a45f175383ad227ebea15852cd9908abb78f7e482ab924c40aaab18050b/
Threat name:
ByteCode-MSIL.Infostealer.Stelega
Create hunting rule
Status:
Malicious
First seen:
2020-10-27 19:46:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uo7surprou4dvurh5pvblbjm3giivo3y67sifk4sjrakvkyyaufq._file
Verdict:
malicious
Similar samples:
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1d5d33d83029cd0b64bd4171db3e6535c4f50d31cc585b6e2b10345121c346fc
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240159852a07d731922811db6650130ff93a374e2128e72bf2b7cf8b52fe551e
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28dac03786f358f9f18751a1e0809e61de6f29a999c45ebc42b778ecf924a880
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a83497c7e3335390441e23f19360eb02a9f9e0613afe56bd0743e1502e1d01df
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a837374ed66cc50cb5760f0f948db288657fd0891687f43df9b9260dfb71449c
AgentTesla
d5886c42f7b8f77d036091616f0314f37e2db5c117aaa769ede368027fe7d43a
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e423f6b4b543c1ed3a05bae9ae421e81c17eb3f02d7aea46ff2c9996d76b9858
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f06e899675196185bd5ced2ea49470470f7b466225b2aae345d0068c652263e6
AgentTesla
fd54073286010523ef59ce428c3ae8b92f87abce1027ed232befe46499bf5e53
AgentTesla
+ 807 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/201027-bs1rdsb72j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Drops file in Drivers directory
Executes dropped EXE
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/a3bf2a45f175383ad227ebea15852cd9908abb78f7e482ab924c40aaab18050b

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/80132/
  
URLhaus
https://urlhaus.abuse.ch/url/757321/

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