MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ff4b6d3bf0c8d4a8c7c547ec8d3b8a747c9c7e2192567c2dc221305b25ee3fbd. 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: ff4b6d3bf0c8d4a8c7c547ec8d3b8a747c9c7e2192567c2dc221305b25ee3fbd
SHA3-384 hash: 1633dac1d4c84eb544590cd38103c4a44f90422768c1ee1477c4d5df249021637e27d4bd80791fa6571f65e52fd8187d
SHA1 hash: 387d0132c5d67c7ba62ee10be722b979a516eb92
MD5 hash: f906c581bb6362cdb3fe6d8a952188c4
humanhash: oranges-triple-colorado-september
File name:purchase order.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:644'096 bytes
First seen:2020-08-19 14:47:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:mWfdrjL0/EpVy7peFd/hK7zEjo4KX+pwC2ieStcrRbANhVL:1dHLYEjew/hKXEjo3yfeSurahL
Threatray 10'207 similar samples on MalwareBazaar
TLSH ACD412B84508A7AFC93C28BC0811E5B01AF3DCD16665F265FEC59CEB79B77406B107A2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.makeitfunny.ro
Sending IP: 91.206.161.135
From: Matei <matei@makeitfunny.ro>
Reply-To: matei <obe.sales@hotmail.com>
Subject: Re : 새로운 주문
Attachment: purchase order.rar (contains "purchase order.exe")

AgentTesla SMTP exfil server:
mail.rgs-eg.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/48665/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/438604
Signature
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 271785 Sample: purchase order.exe Startdate: 20/08/2020 Architecture: WINDOWS Score: 100 55 cdn.onenote.net 2->55 67 Found malware configuration 2->67 69 Sigma detected: Scheduled temp file as task from temp location 2->69 71 Yara detected AgentTesla 2->71 73 9 other signatures 2->73 8 JcoGam.exe 5 2->8         started        11 purchase order.exe 7 2->11         started        14 JcoGam.exe 4 2->14         started        signatures3 process4 file5 75 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->75 77 Machine Learning detection for dropped file 8->77 79 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->79 16 JcoGam.exe 8->16         started        20 schtasks.exe 1 8->20         started        41 C:\Users\user\AppData\...\urmJogUdZnwv.exe, PE32 11->41 dropped 43 C:\Users\...\urmJogUdZnwv.exe:Zone.Identifier, ASCII 11->43 dropped 45 C:\Users\user\AppData\Local\...\tmp9817.tmp, XML 11->45 dropped 47 C:\Users\user\...\purchase order.exe.log, ASCII 11->47 dropped 22 purchase order.exe 2 5 11->22         started        25 schtasks.exe 1 11->25         started        81 Injects a PE file into a foreign processes 14->81 27 schtasks.exe 14->27         started        29 JcoGam.exe 14->29         started        signatures6 process7 dnsIp8 49 mail.rgs-eg.com 16->49 57 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->57 59 Tries to steal Mail credentials (via file access) 16->59 61 Tries to harvest and steal ftp login credentials 16->61 63 Tries to harvest and steal browser information (history, passwords, etc) 16->63 31 conhost.exe 20->31         started        51 rgs-eg.com 69.16.196.97, 49733, 49734, 587 LIQUIDWEBUS United States 22->51 53 mail.rgs-eg.com 22->53 37 C:\Users\user\AppData\Roaming\...\JcoGam.exe, PE32 22->37 dropped 39 C:\Users\user\...\JcoGam.exe:Zone.Identifier, ASCII 22->39 dropped 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->65 33 conhost.exe 25->33         started        35 conhost.exe 27->35         started        file9 signatures10 process11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ff4b6d3bf0c8d4a8c7c547ec8d3b8a747c9c7e2192567c2dc221305b25ee3fbd/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-19 10:32:05 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=75fw2o7qzdkkrr6fi7wi2o4kor6jy7rbsjlhyloceeyfwjpoh66q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'197 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200819-wk1pw9k83s/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ff4b6d3bf0c8d4a8c7c547ec8d3b8a747c9c7e2192567c2dc221305b25ee3fbd

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 6a82970a3c3308cd638c95012dab7a729eac38208e50f4ea3418774dd6df966a

AgentTesla

Executable exe ff4b6d3bf0c8d4a8c7c547ec8d3b8a747c9c7e2192567c2dc221305b25ee3fbd

(this sample)

  
Dropped by
MD5 a5b3ca7d8bfd5788a91d7749c7bf6236
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48665/
  
Dropped by
SHA256 6a82970a3c3308cd638c95012dab7a729eac38208e50f4ea3418774dd6df966a

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