MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc
SHA3-384 hash: cab3d98a4284591067995348c3467509bc1520b346fd0a070c8a249d446a0a068113837063f53b21d5c09cdbec086966
SHA1 hash: 5b57cac279a60ddc904ec639dcacecdf70b504f5
MD5 hash: 7ec536edfb2f45676b6ca798a49d8dd4
humanhash: red-avocado-white-item
File name:VF8lykLscth5Sqj.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:750'080 bytes
First seen:2023-10-24 12:03:47 UTC
Last seen:2023-10-26 11:51:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:GsxTA6q+YIItbIqt8qedaQ5ZmAhXRwIY2NKJGCkui1iDjUqO24XhvMsK6Ed3:Jxs66btEM8d42Y+6/kKjGhEsgd3
Threatray 735 similar samples on MalwareBazaar
TLSH T166F4F19536BDBF4BD63AB7F60950908547F6A07922B2D70E4EE270DB09A4B118F40F27
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 lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
348
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
VF8lykLscth5Sqj.exe
Verdict:
Malicious activity
Analysis date:
2023-10-24 16:44:21 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/9ba832c6-3af5-4880-a996-de21a454d7f3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/455965/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Restart of the analyzed sample
Adding an exclusion to Microsoft Defender
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc
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/5cf571a3-7bba-46bf-a9f2-ecf6602a901b
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1331228
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
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
Malicious sample detected (through community Yara rule)
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)
Sigma detected: Scheduled temp file as task from temp location
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 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: 1331228 Sample: VF8lykLscth5Sqj.exe Startdate: 24/10/2023 Architecture: WINDOWS Score: 100 57 mail.sitraco.org.ng 2->57 59 sitraco.org.ng 2->59 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Sigma detected: Scheduled temp file as task from temp location 2->67 69 8 other signatures 2->69 8 VF8lykLscth5Sqj.exe 7 2->8         started        12 LzSHUS.exe 5 2->12         started        14 aATUsVt.exe 2->14         started        16 aATUsVt.exe 2->16         started        signatures3 process4 file5 53 C:\Users\user\AppData\Roaming\LzSHUS.exe, PE32 8->53 dropped 55 C:\Users\user\AppData\Local\...\tmpE29C.tmp, XML 8->55 dropped 81 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->81 83 Uses schtasks.exe or at.exe to add and modify task schedules 8->83 85 Adds a directory exclusion to Windows Defender 8->85 18 VF8lykLscth5Sqj.exe 1 5 8->18         started        23 powershell.exe 20 8->23         started        35 2 other processes 8->35 87 Multi AV Scanner detection for dropped file 12->87 89 Machine Learning detection for dropped file 12->89 91 Injects a PE file into a foreign processes 12->91 25 LzSHUS.exe 12->25         started        27 schtasks.exe 1 12->27         started        29 aATUsVt.exe 14->29         started        37 2 other processes 14->37 31 aATUsVt.exe 16->31         started        33 schtasks.exe 16->33         started        signatures6 process7 dnsIp8 61 sitraco.org.ng 104.194.10.93, 587 RELIABLESITEUS United States 18->61 49 C:\Users\user\AppData\Roaming\...\aATUsVt.exe, PE32 18->49 dropped 51 C:\Users\user\...\aATUsVt.exe:Zone.Identifier, ASCII 18->51 dropped 71 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->71 73 Tries to steal Mail credentials (via file / registry access) 18->73 75 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->75 39 conhost.exe 23->39         started        77 Installs a global keyboard hook 25->77 41 conhost.exe 27->41         started        79 Tries to harvest and steal browser information (history, passwords, etc) 31->79 43 conhost.exe 33->43         started        45 conhost.exe 35->45         started        47 conhost.exe 37->47         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-10-24 07:55:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
22 of 36 (61.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r35vhfvuu7s75itejsceygvx4aalrtu4v7oby4ls2sahghywzd6a._file
Verdict:
malicious
Similar samples:
33eaff1311456c3c5379af5a4423de4a83f2b7cc013ccb0d6155265209a13be2
AgentTesla
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AgentTesla
+ 725 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/231024-n8lb4acg5t/
Behaviour
Creates scheduled task(s)
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
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
Unpacked files
SH256 hash:
b1270dc9ec3f22c6fd2296239426ac7c48589589580d4a1b3da8188920b22a63
MD5 hash:
5c904da8528cfb1b87b15a6aa7c059cd
SHA1 hash:
f0a192969485d1bc34bf52adf37d9c20176d6b85
Link:
https://www.unpac.me/results/40ae9656-5528-4a36-acb4-91c9f147532b/
SH256 hash:
8cfe0a527120061a1dca59fd392a6249b7054cbf1d70ab8785fd351dcbbe5b16
MD5 hash:
83d9e4dbca24de5908e6553530512b54
SHA1 hash:
dfa3f54045b3f6ee71137baa9802c57fe40eec31
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/40ae9656-5528-4a36-acb4-91c9f147532b/
Parent samples :
8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc
8cfe0a527120061a1dca59fd392a6249b7054cbf1d70ab8785fd351dcbbe5b16
SH256 hash:
85cb15c8faf9637dfa21fdf4934793c2fce7a9e1fab54091645069c97357e860
MD5 hash:
0b89d8fc23753531ba10e3367e73751e
SHA1 hash:
c421597d6a8543f5fdb33de1075c0d56bffa7cf4
Link:
https://www.unpac.me/results/40ae9656-5528-4a36-acb4-91c9f147532b/
SH256 hash:
7e1f64ef96405e9d5313be4585aaeacf59fcbb8854cec86546c00ac8fe9d4e70
MD5 hash:
46fd1bd1aef524849d887d111936dcf0
SHA1 hash:
19e65ddf2e7d8cf3b039f6c21200a8aff2190866
Link:
https://www.unpac.me/results/40ae9656-5528-4a36-acb4-91c9f147532b/
SH256 hash:
8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc
MD5 hash:
7ec536edfb2f45676b6ca798a49d8dd4
SHA1 hash:
5b57cac279a60ddc904ec639dcacecdf70b504f5
Link:
https://www.unpac.me/results/40ae9656-5528-4a36-acb4-91c9f147532b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8efb5396b4a7/report/overview.html
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_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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.

Malspam

AgentTesla

img a36f044f83511535a62d1187b10d5c92bf557cd07bf85f36519330c04712bb66

AgentTesla

Executable exe 8efb5396b4a7e5fea2644c844c1ab7e000b8ce9cafdc1c7172d480731f16c8fc

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/455965/
  
Dropped by
SHA256 a36f044f83511535a62d1187b10d5c92bf557cd07bf85f36519330c04712bb66
  
Dropped by
MD5 3f624d66d034cc0b47e1cc90f620293e

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