MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8
SHA3-384 hash: 6fa174ea6bde404f8f614b6274ae042cfa125bd4b6548628f00e50cc1b3cc96d1aec5f9a3cc1347615896ffb9b197663
SHA1 hash: 9e50bc56372bd9f6c8cccf4c284bc373fde319f0
MD5 hash: c4b59f8e80a1289b9202a33da41d7d94
humanhash: harry-nuts-kansas-triple
File name:c4b59f8e80a1289b9202a33da41d7d94.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'824'768 bytes
First seen:2023-03-20 11:18:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:wBlb49Ot09OX7l348A5NyMWHqTdSoQgcld11rzA11CKKoA5+BtxCEM2D9BgEm41p:cd40xz1foxCsBAfVZa
Threatray 39 similar samples on MalwareBazaar
TLSH T1AF854CF25193FEC5D72F1D44D5083B909C00186767AC869CFCCA269793E95A4EFACAB0
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c4b59f8e80a1289b9202a33da41d7d94.exe
Verdict:
Malicious activity
Analysis date:
2023-03-20 11:23:58 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/888ae069-c16d-4f88-ab34-d36125f59fc2

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/375878/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6418412a3b01ade53e6fa6d2/reports/fa61fa16-02ca-4a82-bc17-19a8ec2ae2e5/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt.Generic
Link:
https://www.hybrid-analysis.com/sample/66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0c018f5d-fe32-43c0-8955-cb5487caef11
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1197943
Signature
Creates multiple autostart registry keys
Encrypted powershell cmdline option found
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
May check the online IP address of the machine
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)
Snort IDS alert for network traffic
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)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 830847 Sample: PSFBGrvmxy.exe Startdate: 20/03/2023 Architecture: WINDOWS Score: 100 55 api4.ipify.org 2->55 57 api.telegram.org 2->57 59 api.ipify.org 2->59 71 Snort IDS alert for network traffic 2->71 73 Multi AV Scanner detection for submitted file 2->73 75 Yara detected Telegram RAT 2->75 77 5 other signatures 2->77 8 PSFBGrvmxy.exe 1 8 2->8         started        12 Vlrvln.exe 4 2->12         started        14 kDPmkTm.exe 4 2->14         started        16 2 other processes 2->16 signatures3 process4 file5 49 C:\Users\user\AppData\Roaming\...\Vlrvln.exe, PE32 8->49 dropped 51 C:\Users\user\...\Vlrvln.exe:Zone.Identifier, ASCII 8->51 dropped 53 C:\Users\user\AppData\...\PSFBGrvmxy.exe.log, ASCII 8->53 dropped 91 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->91 93 May check the online IP address of the machine 8->93 95 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->95 97 Creates multiple autostart registry keys 8->97 18 PSFBGrvmxy.exe 17 5 8->18         started        23 powershell.exe 16 8->23         started        99 Multi AV Scanner detection for dropped file 12->99 101 Machine Learning detection for dropped file 12->101 103 Encrypted powershell cmdline option found 12->103 25 Vlrvln.exe 12->25         started        27 powershell.exe 12->27         started        29 Vlrvln.exe 12->29         started        105 Injects a PE file into a foreign processes 14->105 31 powershell.exe 14->31         started        33 kDPmkTm.exe 14->33         started        35 powershell.exe 16->35         started        signatures6 process7 dnsIp8 61 api4.ipify.org 64.185.227.155, 443, 49696 WEBNXUS United States 18->61 63 api.telegram.org 149.154.167.220, 443, 49697, 49700 TELEGRAMRU United Kingdom 18->63 65 api.ipify.org 18->65 45 C:\Users\user\AppData\Roaming\...\kDPmkTm.exe, PE32 18->45 dropped 47 C:\Users\user\...\kDPmkTm.exe:Zone.Identifier, ASCII 18->47 dropped 79 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->79 81 Tries to steal Mail credentials (via file / registry access) 18->81 83 Creates multiple autostart registry keys 18->83 37 conhost.exe 23->37         started        67 173.231.16.76, 443, 49698 WEBNXUS United States 25->67 69 api.ipify.org 25->69 85 Tries to harvest and steal browser information (history, passwords, etc) 25->85 87 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->87 89 Installs a global keyboard hook 25->89 39 conhost.exe 27->39         started        41 conhost.exe 31->41         started        43 conhost.exe 35->43         started        file9 signatures10 process11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8/
Threat name:
ByteCode-MSIL.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2023-03-20 11:19:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3krgj52xez63koxkxvwshsyj7ftesyeyvz5dpsq2y2moklrgt4a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
061d8e57736f2433d9708948eadb516756f8991683bd6c3a7824fc564decf2e5
AgentTesla
13153ae03f0fc4c762a29a76840cb5ff889e51776bd80e7970c600306e1931eb
AgentTesla
1704307c4598fa8ec273bacaaaa2dfb24ac7e89dde8fd02a3e87b9f55fcdf9b6
AgentTesla
25605527f20f5d35b60f8e73fd14ddbcb376f8409606f692faf35d9c1c39c642
AgentTesla
2e88105d979bfbe65b2ed9322114fc21ef9e1fdb324a63d6198defd1e976d36e
AgentTesla
3f8f13f0de6057e4ce3f86db22451d28d0ad9ee6cf852eb5ca24adbefe619c86
AgentTesla
462b121f72bc42fcefcfc67174e4de53083b977458c7ed3d4009eec6bddd3f1b
AgentTesla
4651352b505fae7173a67ed85a7183925d85837d522b827cace147187ff8f43a
AgentTesla
65cc1ea27c733c270dd0497ed9c99896baf50eeafa5e1200889557985bfd87d5
AgentTesla
f797a34828089feb29e7f77d31f184b335d7958755d385fad50d69fdbd3660d2
AgentTesla
+ 29 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/230320-newkzadb79/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5687731944:AAEDpsUftmaHrKNSGkOlhq0UZLPEvIUd8Bo/
Unpacked files
SH256 hash:
ff8c24bce1eb009f0d5c47a09b96caf02726c285cea0d635082ad4da27e63d1b
MD5 hash:
9d6ec6072ee1814a4a01d1eb3fb67ba1
SHA1 hash:
d0b416de1c900b6bcb35dc182b2e8744f16c3289
Link:
https://www.unpac.me/results/4aa74988-47cd-49ed-96f3-22530aff885a/
SH256 hash:
1053509949a23785804388da78592bf3839b7180790ff312e1dba42873db9670
MD5 hash:
4aea7f3848e5503a3b10eed337bf86e8
SHA1 hash:
1cb294f8283d83683ba57ed010d0d2eca9be67b9
Link:
https://www.unpac.me/results/4aa74988-47cd-49ed-96f3-22530aff885a/
SH256 hash:
1ee616a342779b7ceafeef53dbea607c0e8230f5dd122949b91c3296b88a9699
MD5 hash:
e826f13c39c4b975783f12e669c6afc1
SHA1 hash:
0fa7627c770482d9d701db78728d161bb036299a
Link:
https://www.unpac.me/results/4aa74988-47cd-49ed-96f3-22530aff885a/
SH256 hash:
66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8
MD5 hash:
c4b59f8e80a1289b9202a33da41d7d94
SHA1 hash:
9e50bc56372bd9f6c8cccf4c284bc373fde319f0
Link:
https://www.unpac.me/results/4aa74988-47cd-49ed-96f3-22530aff885a/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66d51327bab9/report/overview.html
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/66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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.

Web download

AgentTesla

Executable exe 66d51327bab933eda9d755eb691e584fcb324b04c573d1be50d634c7297134f8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2538577/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/375878/

Comments