MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9
SHA3-384 hash: ebb317a2bc18b2e20427d0a13966575b02fde9d1ee5fd46801ef0525f0324a4f14443a94dd19c89e25c717301a2bc324
SHA1 hash: 806aaf5066dfc7b7d1261ff9b5155de23f45fb87
MD5 hash: 6b927159982881a36520009cb8aa923d
humanhash: kilo-tango-oklahoma-harry
File name:PRE ALERT NOTICE.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:328'192 bytes
First seen:2023-10-03 13:38:31 UTC
Last seen:2023-10-03 14:38:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:6Rgc2lOrSZPpLM3FZljVsiV3CNL+oP6+UJ+2TeFqtA4DaIt3kwObSC25C7H/c/d:EtjVsiQNKoy+UJ+2TeFqq4Da0YSC2efS
Threatray 11 similar samples on MalwareBazaar
TLSH T14A6418007F4E569BD09D17BB90822384A770D8916B8FEB4F984377F9187B301EA8A757
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
285
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Rogue.0hr.20231003-1235.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Creating a window
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6717c6fb-5a41-4306-9f2a-20a849bb50b1
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1318734
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Creates multiple autostart registry keys
Found malware configuration
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
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1318734 Sample: PRE_ALERT_NOTICE.exe Startdate: 03/10/2023 Architecture: WINDOWS Score: 100 58 Snort IDS alert for network traffic 2->58 60 Multi AV Scanner detection for domain / URL 2->60 62 Found malware configuration 2->62 64 15 other signatures 2->64 6 PRE_ALERT_NOTICE.exe 16 5 2->6         started        11 Rvummnuoq.exe 14 5 2->11         started        13 Rvummnuoq.exe 2->13         started        15 2 other processes 2->15 process3 dnsIp4 54 qu.ax 92.118.112.4, 443, 49779, 49782 GUDAEV-ASRU Russian Federation 6->54 38 C:\Users\user\AppData\Roaming\Rvummnuoq.exe, PE32 6->38 dropped 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->76 78 May check the online IP address of the machine 6->78 80 Creates multiple autostart registry keys 6->80 82 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 6->82 17 PRE_ALERT_NOTICE.exe 2 5 6->17         started        84 Antivirus detection for dropped file 11->84 86 Multi AV Scanner detection for dropped file 11->86 88 Machine Learning detection for dropped file 11->88 22 Rvummnuoq.exe 4 11->22         started        90 Injects a PE file into a foreign processes 13->90 24 Rvummnuoq.exe 13->24         started        26 Rvummnuoq.exe 13->26         started        28 Rvummnuoq.exe 13->28         started        56 92.118.112.119, 443, 49785, 49798 GUDAEV-ASRU Russian Federation 15->56 30 My App.exe 15->30         started        32 My App.exe 15->32         started        file5 signatures6 process7 dnsIp8 40 amtechcards.com 64.188.2.244, 49781, 49784, 49802 ASN-QUADRANET-GLOBALUS United States 17->40 42 mail.amtechcards.com 17->42 44 2 other IPs or domains 17->44 34 C:\Users\user\AppData\Roaming\...\My App.exe, PE32 17->34 dropped 36 C:\Users\user\...\My App.exe:Zone.Identifier, ASCII 17->36 dropped 66 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->66 68 Tries to steal Mail credentials (via file / registry access) 17->68 70 Creates multiple autostart registry keys 17->70 46 3 other IPs or domains 22->46 72 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->72 48 2 other IPs or domains 24->48 50 2 other IPs or domains 30->50 74 Tries to harvest and steal browser information (history, passwords, etc) 30->74 52 2 other IPs or domains 32->52 file9 signatures10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Suspicious
First seen:
2023-10-03 09:57:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 36 (47.22%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mxcch34i7bvqprkctk2oxsgitn6wyonaglulors7poclvsi5hwuq._file
Verdict:
malicious
Similar samples:
308bba46bfcb12039b06105bef71afccd82acb7df7658a8a4497c1955c67ee5d
AgentTesla
55d62602fbaca82ec54e520aa021690a91a0d5d1f6783747a4a2a97f282231c3
AgentTesla
5b58b0a97dac112b439fde1aa15dff60527dec77a0caa4d059e9b6121bb7db95
AgentTesla
6490e5498bf6ca3c0b3cb40d581e019e8c4135fd8bc49580c30160f6b02450c6
AgentTesla
b9d4088106a3a557fb5d909c8c5b921971704d7b764306ee4190cefd9b8d89b0
AgentTesla
c8298ea15d9737ceb275406b2d50919d012195a4e9a0f3be1f514fc364348b9f
AgentTesla
daffe47867bb60e81f6f47acb6ac9161ae2c8ef329648731c86ff877e44c8a21
AgentTesla
eafdaa03650a22399281102a25abc8b5dcb3de2388bb13db78c94215f7fe1716
AgentTesla
f171f8699ea2ebefdf7cdf2665d344cb46d0095c3fd89da5ed3c2bc0bdb3aaf3
AgentTesla
+ 1 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/231003-qxzrfsba6x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9
MD5 hash:
6b927159982881a36520009cb8aa923d
SHA1 hash:
806aaf5066dfc7b7d1261ff9b5155de23f45fb87
Link:
https://www.unpac.me/results/2a2cd887-222f-4def-bb1c-f8ee24a3080f/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/65c423ef88f8/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/65c423ef88f86b07c5429ab4ebc8c89b7d6c39a032e8b7465f7b84bac91d3da9

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

  
Delivery method
Other

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