MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8
SHA3-384 hash: c7de33f6f98477a493fd53631b74068a447d66f4f480b66bb429c4d4c43581cbf796c9f39778e13224e154730eaf13e6
SHA1 hash: 4060cd84567213393793efcd6179bff3e7280069
MD5 hash: a42e21f52fd1f78f98ba16a20ce311c4
humanhash: violet-salami-triple-mobile
File name:SY.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:567'296 bytes
First seen:2022-05-09 03:22:20 UTC
Last seen:2022-05-09 03:36:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:dgjjpDJ2nVeceWFZhgqa34RSYMHoTs58AofujCdOXY2eUeJm2rbYUXBAsGc/5Sxa:dgjjpt2Vechuqa34WIYepfICkY5Uah
Threatray 16'516 similar samples on MalwareBazaar
TLSH T125C46A9CB12075DEF857D4B2C9686C64A6A1776B430F42039433E7AA9E2D5F3CE44CA3
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
SY.exe
Verdict:
Malicious activity
Analysis date:
2022-05-09 03:22:47 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/54ca5ace-3977-48ca-a918-5afb4eafc030

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.3672.21375.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Launching a service
Сreating synchronization primitives
Searching for the window
Creating a file
DNS request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a process with a hidden window
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Sending a UDP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Changing the hosts file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62788917b119a5f609b2283a/reports/1cefcafa-2ed8-4010-b05f-4f0f0eeceb19/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2713439c-4fb4-4552-9b78-51261f09254b
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/989914
Signature
.NET source code contains very large array initializations
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
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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 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 / 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 signatures2 2 Behavior Graph ID: 622410 Sample: SY.exe Startdate: 09/05/2022 Architecture: WINDOWS Score: 100 62 Snort IDS alert for network traffic 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 7 other signatures 2->68 7 SY.exe 6 2->7         started        11 yqWDN.exe 4 2->11         started        13 yqWDN.exe 3 2->13         started        process3 file4 40 C:\Users\user\AppData\Roaming\klklsqjln.exe, PE32 7->40 dropped 42 C:\Users\user\AppData\Local\...\tmp5078.tmp, XML 7->42 dropped 44 C:\Users\user\AppData\Local\...\SY.exe.log, ASCII 7->44 dropped 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->70 72 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->72 74 Uses schtasks.exe or at.exe to add and modify task schedules 7->74 76 Injects a PE file into a foreign processes 7->76 15 SY.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        22 SY.exe 7->22         started        24 SY.exe 7->24         started        78 Multi AV Scanner detection for dropped file 11->78 80 Machine Learning detection for dropped file 11->80 26 yqWDN.exe 2 11->26         started        28 schtasks.exe 1 11->28         started        signatures5 process6 dnsIp7 46 mail.ocenmasters.com 198.54.126.161, 49742, 49750, 587 NAMECHEAP-NETUS United States 15->46 48 192.168.2.1 unknown unknown 15->48 34 C:\Users\user\AppData\Roaming\...\yqWDN.exe, PE32 15->34 dropped 36 C:\Windows\System32\drivers\etc\hosts, ASCII 15->36 dropped 38 C:\Users\user\...\yqWDN.exe:Zone.Identifier, ASCII 15->38 dropped 50 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->50 52 Tries to steal Mail credentials (via file / registry access) 15->52 54 Modifies the hosts file 15->54 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->56 30 conhost.exe 20->30         started        58 Tries to harvest and steal ftp login credentials 26->58 60 Tries to harvest and steal browser information (history, passwords, etc) 26->60 32 conhost.exe 28->32         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8/
Threat name:
ByteCode-MSIL.Trojan.AveMariaRAT
Create hunting rule
Status:
Malicious
First seen:
2022-05-09 01:40:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jm5y6h3kw2jubtvey6hsds3jdzxp3m7n4kltuyyv5fd3fapkexea._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
1a7627dcff8f8d294411d085df8775e37c8277e86e55bbb5a45afe863a95d208
AgentTesla
29cb6bc05ceec1f61c6505393a38615ecd94794ac9641cb533a943fd22734cc7
AgentTesla
5ec21a05d1d8f035071fabb5942e97cdf5756506e7342f1fe4512144ca7e17f6
AgentTesla
78440c8aaf49191ba9a5a13987c467f7f0dd192e500661543f0590eea20f1773
AgentTesla
8604f1c98675e3c0d417eb8c93fa89d12780b3d16e7bc3110ef3c8d3596db103
AgentTesla
890290a055ea69d7ce2ed584794da0e2633674f309b9f9163da4c389c0edbd99
AgentTesla
ad1a702f17301fff222e1cf0b679e6d3d739954ce98ac0b90a34b8fc83869ca5
AgentTesla
+ 16'506 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220509-dxfx5afbbm/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
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
Drops file in Drivers directory
AgentTesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
Unpacked files
SH256 hash:
eea0d5b00479ea0794a4549102c2e504a1f90f08a455c506468dd44715ffd81d
MD5 hash:
af2042574dd72e982615659778d53c03
SHA1 hash:
7a9c2fc0b9e46002199b9c4a1b84760e2f560e54
Link:
https://www.unpac.me/results/6c12c6fc-5ed5-47ba-a72a-e101bd9a890a/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/6c12c6fc-5ed5-47ba-a72a-e101bd9a890a/
SH256 hash:
2a14b2bc943d825d2c2482fcc6d628d80b3efed31f1bc7f36d05b8ac07c0556d
MD5 hash:
265d598c4e73c8628e35d60721fa61ad
SHA1 hash:
2ff0873636b480bead4d7ff98830e908d813b179
Link:
https://www.unpac.me/results/6c12c6fc-5ed5-47ba-a72a-e101bd9a890a/
SH256 hash:
4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8
MD5 hash:
a42e21f52fd1f78f98ba16a20ce311c4
SHA1 hash:
4060cd84567213393793efcd6179bff3e7280069
Link:
https://www.unpac.me/results/6c12c6fc-5ed5-47ba-a72a-e101bd9a890a/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b3b8f1f6ab6/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/4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8

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: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

Executable exe 4b3b8f1f6ab69340cea4c78f21cb691e6efdb3ede2973a6315e947b281ea25c8

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment

Comments