MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 52fb629424b6abda6264f2580b9f847a63b2fd71ec29c22e52cfa7063bc58f9f. 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: 52fb629424b6abda6264f2580b9f847a63b2fd71ec29c22e52cfa7063bc58f9f
SHA3-384 hash: eaf2a39a966c7adbd19792220c0faad818db17a8bf9b3d75cf04d5f182bb16b8d39171b6d15628a501d37df94b9c13a9
SHA1 hash: 6ddb66cfd9200b2fd8b5784199842c420091c8b8
MD5 hash: 95c54eb670498452645d6cca6706cae0
humanhash: romeo-single-lactose-spring
File name:95c54eb670498452645d6cca6706cae0.exe
Download: download sample
Signature AgentTesla
File size:881'664 bytes
First seen:2020-09-02 15:09:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c16adc9f6b07c8ee5c90d22d50952d1c (7 x MassLogger, 1 x AgentTesla, 1 x Formbook)
ssdeep 12288:48tuenUZWnegmyh1MLh0587RS/EE0usn0UA0vJDO/7bEcvniB0PWtzgPgpRgNvT:4oYHyzf8WEE0us0U5xDO/X3MgopKZ
Threatray 9'574 similar samples on MalwareBazaar
TLSH FC15BFE3B2D04437D1B3167C4D1B97B4AC26FE106928A9862BF5DD4C5F397A03A39293
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
AgentTesla SMTP exfil server:
bh-58.webhostbox.net:587

AgentTesla SMTP exfil email address:
mullar@binatones.ml:587

Intelligence


File Origin
# of uploads :
1
# of downloads :
110
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
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
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 dnsIp2 2 Behavior Graph ID: 281195 Sample: kOhR6o76YD.exe Startdate: 02/09/2020 Architecture: WINDOWS Score: 100 27 bh-58.webhostbox.net 2->27 31 Found malware configuration 2->31 33 Antivirus / Scanner detection for submitted sample 2->33 35 Yara detected AgentTesla 2->35 37 Machine Learning detection for sample 2->37 7 mullar.exe 2->7         started        10 kOhR6o76YD.exe 2->10         started        12 mullar.exe 2->12         started        signatures3 process4 signatures5 39 Antivirus detection for dropped file 7->39 41 Detected unpacking (changes PE section rights) 7->41 43 Detected unpacking (creates a PE file in dynamic memory) 7->43 55 2 other signatures 7->55 14 mullar.exe 4 7->14         started        45 Detected unpacking (overwrites its own PE header) 10->45 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->47 49 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 10->49 51 Contains functionality to detect sleep reduction / modifications 10->51 18 kOhR6o76YD.exe 2 7 10->18         started        53 Maps a DLL or memory area into another process 12->53 21 mullar.exe 4 12->21         started        process6 dnsIp7 29 bh-58.webhostbox.net 199.79.63.24, 49720, 49727, 49733 PUBLIC-DOMAIN-REGISTRYUS United States 18->29 23 C:\Users\user\AppData\Local\...\mullar.exe, PE32 18->23 dropped 25 C:\Users\user\...\mullar.exe:Zone.Identifier, ASCII 18->25 dropped 57 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->57 59 Tries to steal Mail credentials (via file access) 18->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->61 63 Tries to harvest and steal ftp login credentials 21->63 65 Tries to harvest and steal browser information (history, passwords, etc) 21->65 file8 signatures9
Threat name:
Win32.Trojan.DelfInject
Status:
Malicious
First seen:
2020-09-02 15:10:16 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
upx keylogger stealer spyware trojan 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
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 52fb629424b6abda6264f2580b9f847a63b2fd71ec29c22e52cfa7063bc58f9f

(this sample)

  
Delivery method
Distributed via web download

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