MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b0e5ba2dd00abd0126cccabaf2b107a218040f555cd0432858a25de12cbdb36. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b0e5ba2dd00abd0126cccabaf2b107a218040f555cd0432858a25de12cbdb36
SHA3-384 hash: 4edb673f412be12d61c27c3c569b03df9d0ead1a8f5b2b694da57eaaba3eb6ca5721634930a6642005006bcda8a5dc2c
SHA1 hash: f167899347bb55d9b01755b4024ba04de94cc4f9
MD5 hash: b2553cbe8e480b5100244a55885d1410
humanhash: bravo-winter-robert-saturn
File name:Discharge - 10,500MT of ZN CONCS - Bukpyung.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:618'496 bytes
First seen:2021-04-19 06:00:39 UTC
Last seen:2021-04-19 07:00:44 UTC
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:AgpxT3DInlxrtluTcpz4eQzY3Wn0hsLvbkHPfuY4k:DDT3IxrrGYcCYqu5
Threatray 10'126 similar samples on MalwareBazaar
TLSH 39D42348F71BA512E48A78300E51D3701B70CD84BD75D793BAAE3BCD2F7A49568207EA
Reporter Anonymous
Tags:AgentTesla

Intelligence

File Origin
# of uploads :
2
# of downloads :
99
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Discharge - 10,500MT of ZN CONCS - Bukpyung.exe
Verdict:
Malicious activity
Analysis date:
2021-04-19 05:05:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/32ec9f5e-a127-48d0-bc52-6f7523937ac0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/138251/
Detection(s):
SecuriteInfo.com.ArtemisB2553CBE8E48.21446.2547.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a custom TCP request
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 window
Creating a file
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
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
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/686198
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped 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 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)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 392046 Sample: Discharge - 10,500MT of ZN ... Startdate: 19/04/2021 Architecture: WINDOWS Score: 100 51 smtp.yandex.ru 2->51 53 smtp.yandex.com 2->53 69 Found malware configuration 2->69 71 Multi AV Scanner detection for dropped file 2->71 73 Yara detected AgentTesla 2->73 75 8 other signatures 2->75 9 Discharge - 10,500MT of ZN CONCS - Bukpyung.exe 18 8 2->9         started        14 WNRUXJ.exe 2->14         started        16 WNRUXJ.exe 2->16         started        signatures3 process4 dnsIp5 59 www.yoursite.com 172.67.133.191, 443, 49710, 49711 CLOUDFLARENETUS United States 9->59 61 yoursite.com 9->61 41 Discharge - 10,500...ONCS - Bukpyung.exe, PE32 9->41 dropped 43 Discharge - 10,500...exe:Zone.Identifier, ASCII 9->43 dropped 45 Discharge - 10,500... - Bukpyung.exe.log, ASCII 9->45 dropped 89 Writes to foreign memory regions 9->89 91 Allocates memory in foreign processes 9->91 93 Injects a PE file into a foreign processes 9->93 18 Discharge - 10,500MT of ZN CONCS - Bukpyung.exe 2 9 9->18         started        23 wscript.exe 1 9->23         started        25 AdvancedRun.exe 1 9->25         started        27 AdvancedRun.exe 1 9->27         started        63 192.168.2.1 unknown unknown 14->63 65 yoursite.com 14->65 47 C:\Users\user\AppData\Local\Temp\WNRUXJ.exe, PE32 14->47 dropped 95 Multi AV Scanner detection for dropped file 14->95 97 Machine Learning detection for dropped file 14->97 67 yoursite.com 16->67 49 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 16->49 dropped file6 signatures7 process8 dnsIp9 55 smtp.yandex.ru 77.88.21.158, 49746, 49757, 587 YANDEXRU Russian Federation 18->55 57 smtp.yandex.com 18->57 37 C:\Users\user\AppData\Roaming\...\WNRUXJ.exe, PE32 18->37 dropped 39 C:\Users\user\...\WNRUXJ.exe:Zone.Identifier, ASCII 18->39 dropped 77 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->77 79 Tries to steal Mail credentials (via file access) 18->79 81 Tries to harvest and steal ftp login credentials 18->81 87 3 other signatures 18->87 83 Wscript starts Powershell (via cmd or directly) 23->83 85 Adds a directory exclusion to Windows Defender 23->85 29 powershell.exe 23->29         started        31 AdvancedRun.exe 25->31         started        33 AdvancedRun.exe 27->33         started        file10 signatures11 process12 process13 35 conhost.exe 29->35         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b0e5ba2dd00abd0126cccabaf2b107a218040f555cd0432858a25de12cbdb36/
Gathering data
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jmhfxiw5acv5aetmzsv26kyqpiqyaqhvkxgqimufris54ewl3m3a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'116 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210419-sca2qyzf6j/
Behaviour
Modifies registry class
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 data files stored by FTP clients
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.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4b0e5ba2dd00abd0126cccabaf2b107a218040f555cd0432858a25de12cbdb36

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
Create hunting rule
Author:James_inthe_box
Description:AgentTesla extracted
Rule name:AgentTesla_mod_tough_bin
Create hunting rule
Author:James_inthe_box
Reference:https://app.any.run/tasks/3b5d409c-978b-4a95-a5f1-399f0216873d/
Rule name:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:agent_tesla_2019
Create hunting rule
Author:jeFF0Falltrades
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_AgentTeslaV2
Create hunting rule
Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:Telegram_Exfiltration_Via_Api
Create hunting rule
Author:lsepaolo
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla
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.

Cape
Cape
https://www.capesandbox.com/analysis/138251/

Comments