MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c. 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: 20


Intelligence 20 IOCs YARA 5 File information Comments
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SHA256 hash: 4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
SHA3-384 hash: 38cf445c4401382c7ad430aae28c86188040b0a5bd3c49a3b0bf4f1af491cab508eeb95b0e8de9f6e8ef436231127f63
SHA1 hash: 4aa6d9ddde36f5fb0a220a8551710b620f898cb2
MD5 hash: 12a2fc06d67f104935d8507367a558b7
humanhash: alpha-apart-lamp-fourteen
File name:4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
Download: download sample
Signature AgentTesla
Create hunting rule
File size:710'144 bytes
First seen:2024-06-03 12:25:40 UTC
Last seen:2024-06-03 13:29:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:1+DbgIB778Qe+8TZyQoN/Kjh3JeF9rFZAxisk1rCVWK2ianQpM:UgIBETZx2/OaBFZAx1WV
Threatray 2'276 similar samples on MalwareBazaar
TLSH T14EE4021172DC9FB3D97EABF6803498441BB334AB69A1D7482DC671DF2962F408A50F17
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter adrian__luca
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
343
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c.exe
Verdict:
Malicious activity
Analysis date:
2024-06-03 12:40:35 UTC
Tags:
smtp agenttesla stealer
Link:
https://app.any.run/tasks/2e03f27e-c06f-41f9-9927-7d356a546f9a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2511.31940.29295.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=665e2282ab69e84d6a2f46d8win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Network Static Msil Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
cmd lolbin packed
Link:
https://www.filescan.io/uploads/665db65d21581a92819a1d5b/reports/72d15cbc-0477-4185-ae57-19c5076908cf/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
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/add9c2c6-3d80-427c-9022-23237a474417
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1451020
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
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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: Powershell Base64 Encoded MpPreference Cmdlet
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 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
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1451020 Sample: 3vkqTw11MX.exe Startdate: 03/06/2024 Architecture: WINDOWS Score: 100 42 us2.smtp.mailhostbox.com 2->42 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus / Scanner detection for submitted sample 2->50 52 13 other signatures 2->52 8 3vkqTw11MX.exe 7 2->8         started        12 CxwrzapYyYTZ.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\CxwrzapYyYTZ.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmp4968.tmp, XML 8->40 dropped 54 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->54 56 Uses schtasks.exe or at.exe to add and modify task schedules 8->56 58 Adds a directory exclusion to Windows Defender 8->58 60 Injects a PE file into a foreign processes 8->60 14 3vkqTw11MX.exe 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        62 Antivirus detection for dropped file 12->62 64 Multi AV Scanner detection for dropped file 12->64 66 Machine Learning detection for dropped file 12->66 24 CxwrzapYyYTZ.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 44 us2.smtp.mailhostbox.com 208.91.199.223, 49708, 49711, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->44 68 Loading BitLocker PowerShell Module 18->68 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        70 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->70 72 Tries to steal Mail credentials (via file / registry access) 24->72 74 Tries to harvest and steal ftp login credentials 24->74 76 Tries to harvest and steal browser information (history, passwords, etc) 24->76 36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 08:10:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
26 of 38 (68.42%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j45qqm6btdn4tzhpqlxy63n7hvjbcvaildxerfzdqsr7y6m5bvoa._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
36847d6a88e758a4d823a6e100746c1f505678f8c286ddc2e942c2329ccc36ee
AgentTesla
4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
AgentTesla
6edb919ae98a2e2efa4af69125a5245793ccb79a8a74e12bc6d51d8c87ac76b1
AgentTesla
e0581b57a7e87e38a5a0ebf8861f816a415bdcb037111f32ba4bdbdc78ca9be3
AgentTesla
+ 2'266 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240603-pl6vysff26/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
AgentTesla
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9a3ee1e4-b8d3-4f27-98ff-780f63dbc1eb
Unpacked files
SH256 hash:
284a7722727a5d4d7ab73c529520b7256ac78c4ccfb2bb68acce2d8f62f3b04d
MD5 hash:
02cb2fb76bc3935ea4e492df6dbbbb09
SHA1 hash:
e39cda112946a6436595a8f2ba698f9c1c56c3a3
Link:
https://www.unpac.me/results/2ff21b7f-6b50-4538-92ea-1fe833800d8c/
SH256 hash:
dc3c65be3392a031890071bf1825e7c857bf6796847bd96feb6d9a1576ff70a8
MD5 hash:
d547bf879e9ab4c12468b602e0817da6
SHA1 hash:
bce71868f0e232b7c87b0ccdb9969d278604d292
Link:
https://www.unpac.me/results/2ff21b7f-6b50-4538-92ea-1fe833800d8c/
SH256 hash:
aed4a976a528f9472b707daae3bc4e722978bce7f0ac54b72cf1cfcd5981a5d8
MD5 hash:
9e4aea62ee76efb9013e6440afd8ffe6
SHA1 hash:
8d597f109698e7c74da0f20815fc4da575ce29c4
Link:
https://www.unpac.me/results/2ff21b7f-6b50-4538-92ea-1fe833800d8c/
SH256 hash:
de698f8917c94ec2de2bf7cb0ff59d4cbff6494ed14c8140d565db75dc8602b7
MD5 hash:
1a5955bdd17d0200bcedb84b5fae67e8
SHA1 hash:
4269ecf21ba30a3fbfe5124ab80ecab01f2da98d
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/2ff21b7f-6b50-4538-92ea-1fe833800d8c/
Parent samples :
0dcb411b9f6379a883cd210ff2fe8927deefc995008701a462131873d945517d
4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
SH256 hash:
4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c
MD5 hash:
12a2fc06d67f104935d8507367a558b7
SHA1 hash:
4aa6d9ddde36f5fb0a220a8551710b620f898cb2
Link:
https://www.unpac.me/results/2ff21b7f-6b50-4538-92ea-1fe833800d8c/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f3b0833c198/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/4f3b0833c198dbc9e4ef82ef8f6dbf3d5211540858ee48972384a3fc799d0d5c

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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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