MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767. 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: f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767
SHA3-384 hash: 0687b703c949cd1a2e8c0c2e9d339058ab03ef1a5f9db69ec72d43000c2674eb5d5aeefd7fed9160bcecdace90e48bd8
SHA1 hash: 8d282f1155287c506cc426a5968d74fa547b9c3c
MD5 hash: 5a230e681c011c6379d43758202424a3
humanhash: tennis-beryllium-sad-bulldog
File name:610270.jpg
Download: download sample
Signature AgentTesla
Create hunting rule
File size:867'328 bytes
First seen:2020-08-17 18:05:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'751 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 12288:tS1QbvgWK5WpLUYZz4yySNcsf/u0dCXONal:MQbvxaW6Az1ySmsCON
Threatray 10'595 similar samples on MalwareBazaar
TLSH A405F73D3A829C28D53D563154E89AC26330A58B3EC5CF2F7ACE47CC6F06A9B3B55149
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: "Smart Tech Director"<admin@smarttech.me >
Subject: Re: RFQ MOTORS
Attachment: Doc.610270.xls

AgentTesla payload URL:
http://13.231.151.34/w2/610270.jpg

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
69
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/47251/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Pretoria.1.17529.25918.UNOFFICIAL
Create hunting rule

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 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:
57 / 100
Link:
https://www.joesandbox.com/analysis/434466
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
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 269614 Sample: 610270.jpg Startdate: 18/08/2020 Architecture: WINDOWS Score: 57 35 Yara detected AgentTesla 2->35 37 .NET source code contains very large array initializations 2->37 7 610270.exe 9 2->7         started        11 pcalua.exe 1 1 2->11         started        13 pcalua.exe 1 2->13         started        process3 file4 27 C:\Users\user\mhje.exe, PE32 7->27 dropped 29 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->29 dropped 31 C:\Users\user\mhje.exe:Zone.Identifier, ASCII 7->31 dropped 33 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 7->33 dropped 41 Drops PE files to the user root directory 7->41 43 Tries to detect virtualization through RDTSC time measurements 7->43 15 mhje.exe 3 7->15         started        18 cmd.exe 1 7->18         started        signatures5 process6 signatures7 45 Writes to foreign memory regions 15->45 47 Allocates memory in foreign processes 15->47 49 Tries to detect virtualization through RDTSC time measurements 15->49 51 Injects a PE file into a foreign processes 15->51 20 InstallUtil.exe 2 15->20         started        22 reg.exe 1 1 18->22         started        25 conhost.exe 18->25         started        process8 signatures9 39 Creates an autostart registry key pointing to binary in C:\Windows 22->39
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 17:14:04 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=66oakzihk4ey4ckh44leajbm4lehfyt4ysgnsc4bfski43obm5tq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'585 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-rchw5y3amx/
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/f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767

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

Excel file xls 9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3

AgentTesla

Executable exe f79c05650757098e0947e71640242ce2c872e27cc48cd90b812c948e6dc16767

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/435049/
  
Dropped by
MD5 2e0b75b3bd2756818723370f83ec33ba
  
Dropped by
SHA256 9cc9ade1d1912adb81c6c0d7801caebd188c57c1612b16ce06bfbd2c06dbd1e3
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/47251/

Comments