MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a3781631c4e416fa9efb09310bca25a02f39f13fe0e33fd715b7be946324b389. 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: 18
| SHA256 hash: | a3781631c4e416fa9efb09310bca25a02f39f13fe0e33fd715b7be946324b389 |
|---|---|
| SHA3-384 hash: | eb4afca0f3da15f659c58c25f0be430205c03e1cc826947326ef0b8baa4413f1f63eda05d581392c00357a4bfd750c3c |
| SHA1 hash: | a6753f38700e4ce6afb21dd505918a4d06dc7e1e |
| MD5 hash: | 1c65c8f56d2190393ddc0109cc37363a |
| humanhash: | december-bluebird-diet-william |
| File name: | SecuriteInfo.com.Trojan.PackedNET.2794.21912.2151 |
| Download: | download sample |
| Signature | AgentTesla |
| File size: | 648'704 bytes |
| First seen: | 2024-04-12 12:23:50 UTC |
| Last seen: | 2024-04-12 13:43:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'813 x AgentTesla, 19'735 x Formbook, 12'282 x SnakeKeylogger) |
| ssdeep | 12288:9kvq31eoWORUTcDi748SJdw21PI+OgqLblLV7e7PfX9:9eqFswi8Dd8+ufKr |
| Threatray | 4'377 similar samples on MalwareBazaar |
| TLSH | T12FD423061998B7B7E9A8A37151AF7B115FB0F66B6172D10E0C865DCFAB7130A8C12F43 |
| 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 |  SecuriteInfoCom |
| Tags: | AgentTesla exe |
Intelligence
File Origin
# of uploads :
2
# of downloads :
345
Origin country :
FRVendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
a3781631c4e416fa9efb09310bca25a02f39f13fe0e33fd715b7be946324b389.exe
Verdict:
Malicious activity
Analysis date:
2024-04-12 12:24:03 UTC
Tags:
stealer agenttesla
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
DNS request
Connection attempt
Sending a custom TCP request
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Stealing user critical data
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
masquerade packed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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
Verdict:
Malicious
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Detection:
agenttesla
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2024-04-12 10:12:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
18 of 24 (75.00%)
Threat level:
2/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
agenttesla_v4
agenttesla
Similar samples:
+ 4'367 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
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
AgentTesla
Unpacked files
SH256 hash:
42aa8a7f03be5ec4d448d2a9648ddc574635c9f258d9b5a51e5ad6c241d5f49c
MD5 hash:
a8799cb12c9d50f5ae4ac7fa1fd6e4aa
SHA1 hash:
e8981519a38b07d41ac5caa88c1bfd20f410eadc
SH256 hash:
6989982c0fa525d850562b2c4846090757a89835faeca43d6186813a6ffa63d3
MD5 hash:
f150463febdfa9241f6870be88cda85b
SHA1 hash:
a7713baf705f9fde9bbad85639b3ae00f9c1c1b5
Detections:
AgentTesla
win_agent_tesla_g2
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Agenttesla_type2
INDICATOR_SUSPICIOUS_Binary_References_Browsers
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
INDICATOR_EXE_Packed_GEN01
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
SH256 hash:
38374f9e9d71071ca5a00d74c9788772d8b260abf6c13324ed9c4489fe3e095a
MD5 hash:
ec0d244c8bf28d55e973fd85cbb51d5a
SHA1 hash:
4065467ed8462041d5829c4fd8d585474e9a4fd4
SH256 hash:
7a052f1b312514eb4953409ec397f1a8669ae04fcddf9c17a45630d9b99342d7
MD5 hash:
4aa46da608a5ed2f1f931d6905993570
SHA1 hash:
3cd2d999793022b5721221a3259ec56b921a431a
SH256 hash:
a3781631c4e416fa9efb09310bca25a02f39f13fe0e33fd715b7be946324b389
MD5 hash:
1c65c8f56d2190393ddc0109cc37363a
SHA1 hash:
a6753f38700e4ce6afb21dd505918a4d06dc7e1e
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
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: | AgentTeslaV3 |
|---|---|
| Author: | ditekshen |
| Description: | AgentTeslaV3 infostealer payload |
| Rule name: | AgentTeslaV5 |
|---|---|
| Author: | ClaudioWayne |
| Description: | AgentTeslaV5 infostealer payload |
| Rule name: | AgentTesla_DIFF_Common_Strings_01 |
|---|---|
| Author: | schmidtsz |
| Description: | Identify partial Agent Tesla strings |
| Rule name: | INDICATOR_EXE_Packed_GEN01 |
|---|---|
| Author: | ditekSHen |
| Description: | Detect packed .NET executables. Mostly AgentTeslaV4. |
| Rule name: | INDICATOR_SUSPICIOUS_Binary_References_Browsers |
|---|---|
| Author: | ditekSHen |
| Description: | Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many email and collaboration clients. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many file transfer clients. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing Windows vault credential objects. Observed in infostealers |
| Rule name: | malware_Agenttesla_type2 |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Agenttesla in memory |
| Reference: | internal research |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Windows_Generic_Threat_9f4a80b2 |
|---|---|
| Author: | Elastic Security |
| Rule name: | Windows_Trojan_AgentTesla_ebf431a8 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
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