MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707. 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 3 File information Comments
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SHA256 hash: a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707
SHA3-384 hash: e120cad1b1b92c0e491061a7821a537d2cad82eaefa9bb8f4bccd87419da433c71d398ee6970a2e781ec42488635db60
SHA1 hash: 4d469c941054278fb5a5912cdc27349f18250fee
MD5 hash: fac15afef385b9e70e90280deab3fde8
humanhash: saturn-steak-sad-mockingbird
File name:AJG202303116.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:836'096 bytes
First seen:2023-08-29 13:29:11 UTC
Last seen:2023-08-30 19:12:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:BCePY6Gmu7r/I77efXOetiqFsNwu87ezJgpWHTM/ZzhyxS9N:B/Y77rm7SXvtiz87ezPHk
Threatray 5'603 similar samples on MalwareBazaar
TLSH T165058403BA47C9A2C588177ACD974C2423E5F581E213FF1AB94F135958437BA6E4BE0B
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
6
# of downloads :
277
Origin country :
US US
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
AJG202303116.exe
Verdict:
Malicious activity
Analysis date:
2023-08-29 13:31:47 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/d79ef114-99dc-43d2-b497-de8e61e65fc1

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/445097/
Detection(s):
SecuriteInfo.com.Win32.KeyloggerX-gen.7594.17809.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin packed replace
Link:
https://www.filescan.io/uploads/64edf2db9ff753467d7fcf58/reports/50afae49-6f40-43fc-a560-837938b81d4c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8d16d322-00db-4831-8725-41409a38e755
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1299508
Signature
.NET source code contains potential unpacker
Found malware configuration
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 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
Sigma detected: MSBuild connects to smtp port
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1299508 Sample: AJG202303116.exe Startdate: 29/08/2023 Architecture: WINDOWS Score: 100 32 mail.sirisexpress.com 2->32 34 files.catbox.moe 2->34 36 2 other IPs or domains 2->36 48 Found malware configuration 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected AgentTesla 2->52 54 7 other signatures 2->54 7 AJG202303116.exe 16 5 2->7         started        12 Smffxabauqx.exe 14 5 2->12         started        14 Smffxabauqx.exe 2->14         started        signatures3 process4 dnsIp5 38 files.catbox.moe 108.181.20.35, 443, 49762, 49766 ASN852CA Canada 7->38 26 C:\Users\user\AppData\...\Smffxabauqx.exe, PE32 7->26 dropped 56 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->56 58 Writes to foreign memory regions 7->58 60 Injects a PE file into a foreign processes 7->60 16 MSBuild.exe 14 2 7->16         started        20 MSBuild.exe 7->20         started        62 Multi AV Scanner detection for dropped file 12->62 64 Machine Learning detection for dropped file 12->64 22 MSBuild.exe 2 12->22         started        24 MSBuild.exe 14->24         started        file6 signatures7 process8 dnsIp9 28 mail.sirisexpress.com 23.106.253.14, 49764, 49776, 49779 LEASEWEB-APAC-SIN-11LeasewebAsiaPacificpteltdSG Singapore 16->28 30 api4.ipify.org 64.185.227.156, 443, 49763, 49775 WEBNXUS United States 16->30 40 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 20->40 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->42 44 Tries to steal Mail credentials (via file / registry access) 24->44 46 Tries to harvest and steal browser information (history, passwords, etc) 24->46 signatures10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-28 22:07:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uoby6emlx7gyownturezeteere4qryjthls2gip6n7wflquk64dq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2627e96c1ea96adf04b4709b5cdb2fe6b9cd9b82ff959cdde4e61a4acb9cbf4d
AgentTesla
a35a34ff770aabda07c6820d69d7f941b8b866d2b60fde248bb5f949c43831dd
AgentTesla
b3be1fe7098ff321491612d574fa9b51205e823f9883abe7f234aaa39f0a32bd
AgentTesla
c01aa0e49d9443f5f4a9c46893397d054eea93f921734704e1294d77d44876af
AgentTesla
c3ef21643a3bafe4a9b6a2378d45e71af68de9fa78fd2d659619e17c7cf6c937
AgentTesla
e1d5abc7c22da2d3def88a5118efc2f1c6349549654dec4d65ad477218244420
AgentTesla
+ 5'593 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/230829-qrsqysff7w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
AgentTesla
Unpacked files
SH256 hash:
a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707
MD5 hash:
fac15afef385b9e70e90280deab3fde8
SHA1 hash:
4d469c941054278fb5a5912cdc27349f18250fee
Link:
https://www.unpac.me/results/5533cbdc-4572-497b-8a9b-4378a78f01cc/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3838f118bbf/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/a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707

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:pe_imphash
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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

rar 928ad7d3e1ce39ae1f89ef638069c9728f14d7b365133366e8f5f11985736356

AgentTesla

Executable exe a3838f118bbfcd8759b3a449924c84893908e1333ae5a321fe6fec55c28af707

(this sample)

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/445097/
  
Dropped by
SHA256 928ad7d3e1ce39ae1f89ef638069c9728f14d7b365133366e8f5f11985736356
  
Dropped by
MD5 7ae774ff5e27ce65af5ed7914ef97f1c
  
Dropped by
SHA256 7de5ff55957871665da2afea6b87f8affe78c27f992d11d922771aa641e27cbf
  
Dropped by
MD5 2994d1653b67a2cd6aebb76b8cce6daa

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