MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99535a8b12db678efeb6aaab7bdc23c5cc8b1b258c42710978bb08b9ab719b7e. 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: 99535a8b12db678efeb6aaab7bdc23c5cc8b1b258c42710978bb08b9ab719b7e
SHA3-384 hash: 1ac7853d26bc5dba5892352291595b865f00b42988c94a20835c0408a2c1fc04a04798a5e43b410ff45e7e8585b155e8
SHA1 hash: eacf68b1599f3dab7f51a42264e5c5f4bf0fc871
MD5 hash: e2dd296932ee0affe806f82a3e227c8e
humanhash: eight-arizona-south-fourteen
File name:50132777.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:787'968 bytes
First seen:2020-08-10 09:31:47 UTC
Last seen:2020-08-10 11:07:21 UTC
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:ZFyk456BkikKwyo6mh9CA/GN7gTB+HT/SEAG+oD1e3Jhus2tbtXnQ/zyw4h:/qvao6mfx/GNGsOa+oD83busCbtXnY
Threatray 10'729 similar samples on MalwareBazaar
TLSH 1FF4292E76C2A805D43C1A3544A9AAD1A3B1B5CF3A52C70F79CB075CAE036CF7A4714E
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.blackspheresystems.net
Sending IP: 162.144.76.14
From: PVT SHIPPING FINANCE LLC <info@labeduinatours.com>
Reply-To: chukisa22@gmail.com
Subject: RE: SHIPPING DOCUMENT
Attachment: t6ropa.iso (contains "50132777.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/42614/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Pretoria.1.19858.15986.UNOFFICIAL
Create hunting rule

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
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:
76 / 100
Link:
https://www.joesandbox.com/analysis/416666
Signature
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
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 260725 Sample: 50132777.exe Startdate: 10/08/2020 Architecture: WINDOWS Score: 76 35 Yara detected AgentTesla 2->35 7 50132777.exe 7 2->7         started        11 pcalua.exe 1 2->11         started        13 pcalua.exe 1 1 2->13         started        process3 file4 29 C:\Users\user\kovbm.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->31 dropped 33 C:\Users\user\kovbm.exe:Zone.Identifier, ASCII 7->33 dropped 43 Drops PE files to the user root directory 7->43 15 kovbm.exe 7->15         started        18 cmd.exe 1 7->18         started        20 kovbm.exe 3 11->20         started        signatures5 process6 signatures7 45 Writes to foreign memory regions 15->45 47 Allocates memory in foreign processes 15->47 49 Injects a PE file into a foreign processes 15->49 22 InstallUtil.exe 15->22         started        25 reg.exe 1 1 18->25         started        27 conhost.exe 18->27         started        process8 signatures9 37 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 22->37 39 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 22->39 41 Creates an autostart registry key pointing to binary in C:\Windows 25->41
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/99535a8b12db678efeb6aaab7bdc23c5cc8b1b258c42710978bb08b9ab719b7e/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-10 09:33:09 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tfjvvcys3nty57vwvkvxxxbdyxgiwgzfrrbhcclyxmeltk3rtn7a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
05568298144f10100f3882592a8be0a1754c579f581a3db6316d014c7f8ca8f3
AgentTesla
298be508522121999d495c3ad893490264f9225bc09e15aeffddfd52fcd0deea
AgentTesla
39b1f53d978ec28d01954e7fb10b3350cb4e18e3916296e1e364528c55b0ca7a
AgentTesla
640e087a78aa77a9bb49027500f1f29f9d31f5b64c13c99b690ea813d0737fd4
AgentTesla
78725b7f6e827b81713c49f350a86750b9794fbc045dedc1254bb2b456084ffb
AgentTesla
9afaf41fc9f1418d01622663a2cda082a43071a19468f6a5e2f29c3a56aeefe8
AgentTesla
a1077b012372849e6b3db7818210e573678d9c2154c5431a7a48abb2868a839f
AgentTesla
b5fd16a3680333bc763cd5c9bdd1ea24a4387653503bef22c61f575f517cb6f0
AgentTesla
e9939c063f5c1cbbaa6401386a2f59c8e4f2d5d4fbb73f73f8b7182d7111c234
AgentTesla
f7e513d0306588b6a5ab536513e1ada1cc326116d0840a8fc9a029f473645b45
AgentTesla
+ 10'719 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200810-aqx2kb3ljn/
Behaviour
AgentTesla Payload
Agenttesla family
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/99535a8b12db678efeb6aaab7bdc23c5cc8b1b258c42710978bb08b9ab719b7e

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.

da1230af65cb1f1bca3750b3fe2d8ad9

AgentTesla

Executable exe 99535a8b12db678efeb6aaab7bdc23c5cc8b1b258c42710978bb08b9ab719b7e

(this sample)

  
Dropped by
MD5 da1230af65cb1f1bca3750b3fe2d8ad9
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42614/

Comments