MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b48cfe64a7d020f64e9b09d7636b59ac1f567a51d246b8dd59c53eaa6b339aa7. 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

SHA256 hash: b48cfe64a7d020f64e9b09d7636b59ac1f567a51d246b8dd59c53eaa6b339aa7
SHA3-384 hash: 227a93edb0e04214e0d56821006467da66b4a07b378f0cff52fdc0b992db70459ec90b330316d9831e78a1dc5fb483cd
SHA1 hash: fb7f435e2667cd0be9beb00079bf162b37d76d35
MD5 hash: ce823d7ba850bf351e868b963cd0a5bf
humanhash: alaska-winner-moon-july
File name:ce823d7ba850bf351e868b963cd0a5bf.exe
Download: download sample
Signature AgentTesla
File size:841'216 bytes
First seen:2020-09-27 07:50:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a9966721868f2b28eaf1fc486a46710f (3 x AgentTesla, 2 x Formbook, 1 x AZORult)
ssdeep 12288:exojH5jdL/KyCR7PqRo2YQLa3RFC7cvoLTKWUOR5Wsp31I72nfGVfECE:XljBKnRIIQOhKcCTKpItEOIfER
Threatray 10'192 similar samples on MalwareBazaar
TLSH DC05C027E2F07537C177163E8C1B5BB4AD29BE10EE24A9462FE4DD4C5F396807429293
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a UDP request
Using the Windows Management Instrumentation requests
Creating a file in the %temp% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to detect sleep reduction / modifications
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
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)
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
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 290452 Sample: UMexrabuwq.exe Startdate: 27/09/2020 Architecture: WINDOWS Score: 100 30 Found malware configuration 2->30 32 Antivirus / Scanner detection for submitted sample 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 2 other signatures 2->36 6 arinze.exe 2->6         started        9 UMexrabuwq.exe 2->9         started        11 arinze.exe 2->11         started        process3 signatures4 38 Antivirus detection for dropped file 6->38 40 Multi AV Scanner detection for dropped file 6->40 42 Detected unpacking (changes PE section rights) 6->42 52 4 other signatures 6->52 13 arinze.exe 4 6->13         started        44 Detected unpacking (creates a PE file in dynamic memory) 9->44 46 Detected unpacking (overwrites its own PE header) 9->46 48 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 9->48 17 UMexrabuwq.exe 2 7 9->17         started        50 Maps a DLL or memory area into another process 11->50 20 arinze.exe 4 11->20         started        process5 dnsIp6 26 192.168.2.1 unknown unknown 13->26 28 bh-58.webhostbox.net 199.79.63.24, 49727, 49728, 49731 PUBLIC-DOMAIN-REGISTRYUS United States 17->28 22 C:\Users\user\AppData\Local\...\arinze.exe, PE32 17->22 dropped 24 C:\Users\user\...\arinze.exe:Zone.Identifier, ASCII 17->24 dropped 54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->54 56 Tries to steal Mail credentials (via file access) 17->56 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->58 60 Tries to harvest and steal ftp login credentials 20->60 62 Tries to harvest and steal browser information (history, passwords, etc) 20->62 file7 signatures8
Threat name:
Win32.Trojan.LokibotCrypt
Status:
Malicious
First seen:
2020-09-25 10:10:37 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
upx keylogger stealer trojan spyware family:agenttesla persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
UPX packed file
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
b48cfe64a7d020f64e9b09d7636b59ac1f567a51d246b8dd59c53eaa6b339aa7
MD5 hash:
ce823d7ba850bf351e868b963cd0a5bf
SHA1 hash:
fb7f435e2667cd0be9beb00079bf162b37d76d35
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
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.

Web download

AgentTesla

Executable exe b48cfe64a7d020f64e9b09d7636b59ac1f567a51d246b8dd59c53eaa6b339aa7

(this sample)

  
Delivery method
Distributed via web download

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