MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b70d8bec1085949c128725ae5a8b69ccaeda7c20fb1e7be0d6e9ff2b5ef1a85. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b70d8bec1085949c128725ae5a8b69ccaeda7c20fb1e7be0d6e9ff2b5ef1a85
SHA3-384 hash: 97244cc7facae0737222e93ed99d037e3d42fe0c380fb56e3d8b443c0c33bd7874679de5960d5e7740654cdfc95b8bee
SHA1 hash: d09d1f836fde2e422833460dd39cbbf925859869
MD5 hash: 595d2af4ee391b3e1bde8afb492a4514
humanhash: steak-oranges-orange-snake
File name:Scan_copy_08272020.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:687'104 bytes
First seen:2020-08-27 08:02:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'604 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:FOlMptuWVy4hUxfF28viJWOojRwzDvXMdUsqS/67ECTFH:giVyD9Q8IkRy7X0fpeE8
Threatray 9'233 similar samples on MalwareBazaar
TLSH 61E412A817ADCF0AE1FE097A947D310403F97855A5F4E3895B91D25728F1FA04A23BB3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: webmail.cyber.net.pk
Sending IP: 203.101.175.37
From: cssgroup@cyber.net.pk
Subject: INQUIRY - ORDER REF 12610
Attachment: Scan_copy_08272020.pdf.gz (contains "Scan_copy_08272020.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/51662/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Using the Windows Management Instrumentation requests
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/452365
Signature
Binary contains a suspicious time stamp
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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)
Queries sensitive video device information (via WMI, Win32_VideoController, 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 signatures2 2 Behavior Graph ID: 278542 Sample: Scan_copy_08272020.exe Startdate: 27/08/2020 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Multi AV Scanner detection for dropped file 2->35 37 Sigma detected: Scheduled temp file as task from temp location 2->37 39 8 other signatures 2->39 7 Scan_copy_08272020.exe 5 2->7         started        process3 file4 19 C:\Users\user\AppData\...\HhhGajJWoFvaTg.exe, PE32 7->19 dropped 21 C:\...\HhhGajJWoFvaTg.exe:Zone.Identifier, ASCII 7->21 dropped 23 C:\Users\user\AppData\Local\...\tmpB069.tmp, XML 7->23 dropped 25 C:\Users\user\...\Scan_copy_08272020.exe.log, ASCII 7->25 dropped 41 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->41 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->43 45 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->45 47 2 other signatures 7->47 11 Scan_copy_08272020.exe 2 7->11         started        15 schtasks.exe 1 7->15         started        signatures5 process6 dnsIp7 27 smtp.yandex.ru 77.88.21.158, 49728, 587 YANDEXRU Russian Federation 11->27 29 192.168.2.1 unknown unknown 11->29 31 smtp.yandex.com 11->31 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->49 51 Tries to steal Mail credentials (via file access) 11->51 53 Tries to harvest and steal ftp login credentials 11->53 55 Tries to harvest and steal browser information (history, passwords, etc) 11->55 17 conhost.exe 15->17         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b70d8bec1085949c128725ae5a8b69ccaeda7c20fb1e7be0d6e9ff2b5ef1a85/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-27 08:03:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=dnynrpwbbbmutqjiojnolkfwttfo3j6cb6y6ppqnn2p7fnppdkcq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 9'223 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer evasion spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200827-mevhemq9s6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Looks for VMWare Tools registry key
AgentTesla Payload
Looks for VirtualBox Guest Additions in registry
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Farheyt
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/1b70d8bec1085949c128725ae5a8b69ccaeda7c20fb1e7be0d6e9ff2b5ef1a85

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

gz 9d4fb7929a5d37e1cc4eb2584562b7b3c51e212521d2bbbf6f0fa2e2b7635262

AgentTesla

Executable exe 1b70d8bec1085949c128725ae5a8b69ccaeda7c20fb1e7be0d6e9ff2b5ef1a85

(this sample)

  
Dropped by
MD5 4aa07a6f3a259acbc96be374b01dee8d
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/51662/
  
Dropped by
SHA256 9d4fb7929a5d37e1cc4eb2584562b7b3c51e212521d2bbbf6f0fa2e2b7635262

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