MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c56b99ff57c329dadabc8f03ae1dc2b35cc116830e594820f16326ca531ea21c. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c56b99ff57c329dadabc8f03ae1dc2b35cc116830e594820f16326ca531ea21c
SHA3-384 hash: 71cf48aa1741642199ebf17117b075422f10023eaafe9591b0a512e5d9e2564c95cae4dee72b5afc9d2c59dbebe4a11e
SHA1 hash: 712ddd7e1cc85d5d0d96312cc2c19f78dd7e6f17
MD5 hash: 25a765a2265a2eb6ca54c7b7b6fc6e49
humanhash: pip-cola-earth-mississippi
File name:Fattura proforma-700004616.doc.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:557'568 bytes
First seen:2021-04-30 14:00:05 UTC
Last seen:2021-05-03 06:05:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:/reQudxL/iRhp3hVVQUWMZ34ayDgmCf52j3pIBINdY8:/gdxL/iDQZMl4agn2Mj3iId/
Threatray 4'359 similar samples on MalwareBazaar
TLSH C7C4012033A99B65E97C47B8083162811BF5F617F316DB5E7D8D02AC5E62F068B12B73
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/147473/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.688-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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/704969
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
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)
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 an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 401414 Sample: Fattura proforma-700004616.... Startdate: 30/04/2021 Architecture: WINDOWS Score: 100 71 smtp.abanit.net 2->71 73 us2.smtp.mailhostbox.com 2->73 83 Found malware configuration 2->83 85 Multi AV Scanner detection for dropped file 2->85 87 Sigma detected: Scheduled temp file as task from temp location 2->87 89 13 other signatures 2->89 8 Fattura proforma-700004616.doc.exe 7 2->8         started        12 pGKuRU.exe 2->12         started        14 pGKuRU.exe 2->14         started        signatures3 process4 file5 59 C:\Users\user\AppData\...\vBnIbeLsYpsdcj.exe, PE32 8->59 dropped 61 C:\...\vBnIbeLsYpsdcj.exe:Zone.Identifier, ASCII 8->61 dropped 63 C:\Users\user\AppData\Local\...\tmp3877.tmp, XML 8->63 dropped 65 C:\...\Fattura proforma-700004616.doc.exe.log, ASCII 8->65 dropped 91 Adds a directory exclusion to Windows Defender 8->91 93 Injects a PE file into a foreign processes 8->93 16 Fattura proforma-700004616.doc.exe 8->16         started        21 powershell.exe 19 8->21         started        23 powershell.exe 26 8->23         started        33 2 other processes 8->33 95 Multi AV Scanner detection for dropped file 12->95 97 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 12->97 99 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->99 101 3 other signatures 12->101 25 powershell.exe 12->25         started        27 schtasks.exe 12->27         started        29 powershell.exe 12->29         started        31 pGKuRU.exe 12->31         started        35 4 other processes 14->35 signatures6 process7 dnsIp8 67 smtp.abanit.net 16->67 69 us2.smtp.mailhostbox.com 208.91.199.223, 49760, 49764, 49765 PUBLIC-DOMAIN-REGISTRYUS United States 16->69 55 C:\Users\user\AppData\Roaming\...\pGKuRU.exe, PE32 16->55 dropped 57 C:\Users\user\...\pGKuRU.exe:Zone.Identifier, ASCII 16->57 dropped 75 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->75 77 Tries to steal Mail credentials (via file access) 16->77 79 Tries to harvest and steal ftp login credentials 16->79 81 2 other signatures 16->81 37 conhost.exe 21->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        45 conhost.exe 29->45         started        47 conhost.exe 33->47         started        49 conhost.exe 33->49         started        51 conhost.exe 35->51         started        53 2 other processes 35->53 file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c56b99ff57c329dadabc8f03ae1dc2b35cc116830e594820f16326ca531ea21c/
Threat name:
ByteCode-MSIL.Trojan.Phonzy
Create hunting rule
Status:
Malicious
First seen:
2021-04-30 10:15:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yvvzt72xymu5vwv4r4b24hocwnomcfudbzmuqihrmmtmuuy6uioa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
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AgentTesla
+ 4'349 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210430-qp4w43ds6s/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
AgentTesla Payload
Looks for VirtualBox Guest Additions in registry
AgentTesla
Unpacked files
SH256 hash:
11cf5a51e593c007ff4f91294cf505ffd5e425e56387c60d81e6479cc284cc3b
MD5 hash:
73cc3f7e7700e6a54cb5f291dffe5aa1
SHA1 hash:
09174f9fa55c9bac0540efb7a8c682878a32d02d
Link:
https://www.unpac.me/results/c0cc81ca-34cc-4366-9580-078fb43b29d4/
SH256 hash:
c56b99ff57c329dadabc8f03ae1dc2b35cc116830e594820f16326ca531ea21c
MD5 hash:
25a765a2265a2eb6ca54c7b7b6fc6e49
SHA1 hash:
712ddd7e1cc85d5d0d96312cc2c19f78dd7e6f17
Link:
https://www.unpac.me/results/c0cc81ca-34cc-4366-9580-078fb43b29d4/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c56b99ff57c329dadabc8f03ae1dc2b35cc116830e594820f16326ca531ea21c

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
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_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/147473/

Comments