MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 557a23bc897c4f8c4d902c834fb91310834ccb6a38523e7fff61de40e016f7fb. 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
| SHA256 hash: | 557a23bc897c4f8c4d902c834fb91310834ccb6a38523e7fff61de40e016f7fb |
|---|---|
| SHA3-384 hash: | 6663d840a9d8ff66b547e287d3f12965c36d18a64cf3aead0571fc5d545a2585eb373a4786ce18d73f9422662b356334 |
| SHA1 hash: | 8cbb134718fa6cb73abcfef5d8941eb202cbac46 |
| MD5 hash: | c0046ef879ada4bfb738c2955d278684 |
| humanhash: | massachusetts-may-finch-wyoming |
| File name: | 557a23bc897c4f8c4d902c834fb91310834ccb6a38523e7fff61de40e016f7fb |
| Download: | download sample |
| Signature | AgentTesla |
| File size: | 718'848 bytes |
| First seen: | 2025-12-08 15:21:12 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 12288:nDK5wvOuqPyIdAwRWsGWC8b10VjAHNDCzTCwFXC9omlfJJVlj2fkUobL:uVyGTRWsGEUuNDCzTC84oGpx2sUo |
| Threatray | 288 similar samples on MalwareBazaar |
| TLSH | T1AEE402642289CF13D0B71FB106A1E2B047786EDDB853E20A4FEB6DEBB5A5B405901793 |
| TrID | 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 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) |
| Magika | pebin |
| Reporter |  adrian__luca |
| Tags: | AgentTesla exe |
Intelligence
File Origin
# of uploads :
1
# of downloads :
73
Origin country :
HUVendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
557a23bc897c4f8c4d902c834fb91310834ccb6a38523e7fff61de40e016f7fb
Verdict:
Malicious activity
Analysis date:
2025-12-08 22:34:19 UTC
Tags:
auto-sch-xml stealer ultravnc rmm-tool exfiltration smtp agenttesla
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
Verdict:
Malicious
Score:
99.1%
Tags:
shell virus lien msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
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
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-20T03:31:00Z UTC
Last seen:
2025-12-08T04:00:00Z UTC
Hits:
~100
Malware family:
Agent Tesla
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.24 Win 32 Exe x86
Detection:
agenttesla
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2025-11-20 07:11:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
24 of 36 (66.67%)
Threat level:
2/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
unc_loader_037
unc_loader_078
agenttesla
Similar samples:
+ 278 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
family:agenttesla discovery execution keylogger persistence spyware stealer trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
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
Agenttesla family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
557a23bc897c4f8c4d902c834fb91310834ccb6a38523e7fff61de40e016f7fb
MD5 hash:
c0046ef879ada4bfb738c2955d278684
SHA1 hash:
8cbb134718fa6cb73abcfef5d8941eb202cbac46
SH256 hash:
111e88b06ab4bda9dcea292177f2fbf656f056ee3bc315aea8861653872867a4
MD5 hash:
ca046727926a963297a6f802f7f59312
SHA1 hash:
49c2d05a1f1ea2530c2b54c1450b70ab1595175c
SH256 hash:
ac63a0a4e3b6686ef008c2ebc896718f5282872b67bdee7078146b427d7bcc8e
MD5 hash:
639909dfe2d23943e1f785d8e32de4b1
SHA1 hash:
673dd1e8c756fad19d8a86cb6102d4fc31596180
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
68a985d25e4a014e8f9c08517de76cb3538b9f93349cf05744c23c71bae4ff03
MD5 hash:
3d6fca526571c3175acdbbffd2cc04f4
SHA1 hash:
8aaa27fb0aee20a93197cae2fa831418876283eb
Detections:
win_agent_tesla_g2
AgentTesla
Agenttesla_type2
INDICATOR_EXE_Packed_GEN01
INDICATOR_SUSPICIOUS_Binary_References_Browsers
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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:
1.00
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_type2 |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Agenttesla in memory |
| Reference: | internal research |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| 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: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| 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.
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