MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7c3d65ccde1c6e2784e6e144dda9909101aeb382d1036b9019117aae30217b7. 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: b7c3d65ccde1c6e2784e6e144dda9909101aeb382d1036b9019117aae30217b7
SHA3-384 hash: dea458835937f4e08d07b6bbbe3d4437b12f995c0eba03fce3c46ad4bc59454a3f9e21e67ab7dc8f8156ea8401401663
SHA1 hash: e2a2eade46189cdb65b4700a415aabc5f2124291
MD5 hash: eff18eed98fe72af754b4e99df4c6e22
humanhash: winner-football-johnny-juliet
File name:MEDIFORM SA COMPANY PROFILE.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:526'336 bytes
First seen:2020-08-06 04:44:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:hP3SiVJdaYxjXfk6e9KR2Cm9gvj2rcOm+T0X9QK2K5lcsgrpiA:3VKYxrLYEvj24OmjXel1QA
Threatray 10'639 similar samples on MalwareBazaar
TLSH 03B4F15437DE5B66E9FC9FF8418C308007F9BD27AD52E3609D8131F72676B8082A5A93
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: hshgroups.co
Sending IP: 104.168.166.26
From: Mediform S.A<mediform.s.a@hotmail.com>
Subject: Re:Fw: Request For New Inquiry RFQ
Attachment: MEDIFORM SA COMPANY PROFILE.rar (contains "MEDIFORM SA COMPANY PROFILE.exe")

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:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39989/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.43601973.27938.1172.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/412031
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 258256 Sample: MEDIFORM SA COMPANY PROFILE.exe Startdate: 06/08/2020 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Yara detected AgentTesla 2->51 53 Yara detected AntiVM_3 2->53 55 4 other signatures 2->55 6 TVkxXD.exe 3 2->6         started        9 MEDIFORM SA COMPANY PROFILE.exe 3 2->9         started        12 TVkxXD.exe 2->12         started        process3 file4 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->57 59 Machine Learning detection for dropped file 6->59 61 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->61 14 TVkxXD.exe 2 6->14         started        18 TVkxXD.exe 6->18         started        20 TVkxXD.exe 6->20         started        22 TVkxXD.exe 6->22         started        39 C:\...\MEDIFORM SA COMPANY PROFILE.exe.log, ASCII 9->39 dropped 63 Injects a PE file into a foreign processes 9->63 24 MEDIFORM SA COMPANY PROFILE.exe 2 5 9->24         started        27 MEDIFORM SA COMPANY PROFILE.exe 9->27         started        29 TVkxXD.exe 12->29         started        31 TVkxXD.exe 12->31         started        33 2 other processes 12->33 signatures5 process6 dnsIp7 41 smtp.yandex.com 14->41 65 Tries to harvest and steal ftp login credentials 14->65 67 Tries to harvest and steal browser information (history, passwords, etc) 14->67 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->69 43 smtp.yandex.ru 77.88.21.158, 49741, 49742, 587 YANDEXRU Russian Federation 24->43 45 192.168.2.1 unknown unknown 24->45 47 smtp.yandex.com 24->47 35 C:\Users\user\AppData\Roaming\...\TVkxXD.exe, PE32 24->35 dropped 37 C:\Users\user\...\TVkxXD.exe:Zone.Identifier, ASCII 24->37 dropped 71 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->71 73 Moves itself to temp directory 24->73 75 Tries to steal Mail credentials (via file access) 24->75 77 Installs a global keyboard hook 24->77 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b7c3d65ccde1c6e2784e6e144dda9909101aeb382d1036b9019117aae30217b7/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-06 01:00:18 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=w7b5mxgn4hdoe6conyke3wuzbeibv2zyfuidnoibsel2vyycc63q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'629 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer trojan spyware family:agenttesla persistence
Link:
https://tria.ge/reports/200806-jydaqnf4qa/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/b7c3d65ccde1c6e2784e6e144dda9909101aeb382d1036b9019117aae30217b7

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

rar 4d458f6288b4e3331ded0750630bcd4da814e60d8f8cc2edc3fafc71f8b2bd48

AgentTesla

Executable exe b7c3d65ccde1c6e2784e6e144dda9909101aeb382d1036b9019117aae30217b7

(this sample)

  
Dropped by
MD5 b9fecbf004c298d518520b2bda562163
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39989/
  
Dropped by
SHA256 4d458f6288b4e3331ded0750630bcd4da814e60d8f8cc2edc3fafc71f8b2bd48

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