MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 559ba07809e7bb16a50c8872fef5f930d54662bb95147abacd01617180b419a8. 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 13 File information Comments 1

SHA256 hash: 559ba07809e7bb16a50c8872fef5f930d54662bb95147abacd01617180b419a8
SHA3-384 hash: f52263fbf259f049195436a83e68daa5f2beadf5d5828cc434e35c7b694e83e44273193db820ad989dcdd269f26b662a
SHA1 hash: 57af0ef39fef9e6c9496fef936116216bb456993
MD5 hash: cb281073ae1d6f61d339a1b12d50364a
humanhash: golf-monkey-asparagus-happy
File name:T.HALK BANKASI A.Ş. 01.05.2021 - 21.05.2021 Hesap Ekstresi.pdf.exe
Download: download sample
Signature AgentTesla
File size:334'848 bytes
First seen:2021-05-21 15:37:49 UTC
Last seen:2021-05-21 16:47:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:q62V79rQ23bZPDSwKXz5JTVY3cAOQaUqY0bHS+MI7zUZYn6QlLkUQ+h5fHCY2ZSd:0PrFLZPDtKV8HaUEbH5MI7COkUVh5PoG
Threatray 9'803 similar samples on MalwareBazaar
TLSH A464121BB647A3B4CCB261BA3822D0919233E3985D17176F74AF429D6E23BCDEB14315
Reporter abuse_ch
Tags:AgentTesla exe geo Halkbank TUR


Avatar
abuse_ch
AgentTesla SMTP exfil server:
mail.thevirabali.com:587

Intelligence


File Origin
# of uploads :
2
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
T.HALK BANKASI A.Ş. 01.05.2021 - 21.05.2021 Hesap Ekstresi.pdf.exe
Verdict:
No threats detected
Analysis date:
2021-05-21 21:50:59 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a service
Deleting a recently created file
Creating a file
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Moving a file to the %temp% directory
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Contains functionality to register a low level keyboard hook
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
Installs a global keyboard hook
Machine Learning detection for sample
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 steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 420150 Sample: T.HALK BANKASI A.#U015e. 01... Startdate: 21/05/2021 Architecture: WINDOWS Score: 100 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected AgentTesla 2->52 54 .NET source code contains potential unpacker 2->54 56 3 other signatures 2->56 7 T.HALK BANKASI A.#U015e. 01.05.2021 - 21.05.2021 Hesap Ekstresi.pdf.exe 3 2->7         started        11 HksDkVH.exe 2 2->11         started        13 HksDkVH.exe 1 2->13         started        process3 file4 32 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 7->32 dropped 34 T.HALK BANKASI A.#...kstresi.pdf.exe.log, ASCII 7->34 dropped 36 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 7->36 dropped 58 Writes to foreign memory regions 7->58 60 Allocates memory in foreign processes 7->60 62 Injects a PE file into a foreign processes 7->62 15 RegAsm.exe 2 4 7->15         started        19 AdvancedRun.exe 1 7->19         started        22 AdvancedRun.exe 1 7->22         started        24 conhost.exe 11->24         started        26 conhost.exe 13->26         started        signatures5 process6 dnsIp7 38 C:\Users\user\AppData\Roaming\...\HksDkVH.exe, PE32 15->38 dropped 42 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->42 44 Tries to steal Mail credentials (via file access) 15->44 46 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 15->46 48 4 other signatures 15->48 40 192.168.2.1 unknown unknown 19->40 28 AdvancedRun.exe 19->28         started        30 AdvancedRun.exe 22->30         started        file8 signatures9 process10
Threat name:
ByteCode-MSIL.Downloader.Seraph
Status:
Malicious
First seen:
2021-05-21 15:38:12 UTC
AV detection:
14 of 47 (29.79%)
Threat level:
  3/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla Payload
Nirsoft
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_extracted_bin
Author:James_inthe_box
Description:AgentTesla extracted
Rule name:AgentTesla_mod_tough_bin
Author:James_inthe_box
Reference:https://app.any.run/tasks/3b5d409c-978b-4a95-a5f1-399f0216873d/
Rule name:Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:agent_tesla_2019
Author:jeFF0Falltrades
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_AgentTeslaV2
Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Telegram_Exfiltration_Via_Api
Author:lsepaolo
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla
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.

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-21 16:37:53 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0023] Execution::Install Additional Program