MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8. 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: 17

Intelligence 17 IOCs YARA 16 File information Comments

SHA256 hash:	c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8
SHA3-384 hash:	88c29236d5dff66fb630c740d2e9db7234efc8fcc5b40b769e61b2ff855e6cb75ae8d878e2af8072ddfd7b7f1c85f1ee
SHA1 hash:	87108cf3e9f23675b540cc03da915f743daee4f0
MD5 hash:	b5b730da4de15b8207d27539f547552a
humanhash:	indigo-dakota-autumn-illinois
File name:	loading advice.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	869'376 bytes
First seen:	2024-02-29 14:23:59 UTC
Last seen:	2024-07-24 21:17:22 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:EVEblglglglPdRQnRaCocX4ba64OQ6YAH0uqrBH:idCnRtossR4OQWBq
Threatray	5'373 similar samples on MalwareBazaar
TLSH	T1C305014037BAAF59D67D43F3CA65A1904BF63627F621EB1C8DCA90EE1524F440B42E87
TrID	63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.2% (.SCR) Windows screen saver (13097/50/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter	threatcat_ch
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

352

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8.exe

Verdict:

Malicious activity

Analysis date:

2024-02-29 14:36:15 UTC

Tags:

stealer agenttesla

Link:

https://app.any.run/tasks/15770aa6-dbe2-443b-9039-65237f5ce911

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

Porcupine.Malware.58887.UNOFFICIAL

Win.Packed.Msilheracles-10020638-0

Win.Packed.Agensla-10021078-0

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/65e093887c8df15f5be86b5a/reports/ff344622-afe0-46f8-8938-b768dff30fc8/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8

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

Link:

https://analyze.intezer.com/analyses/bcd23d79-658c-4a8e-b14e-2989bc55fe55

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1400938

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

Allocates memory in foreign processes

Antivirus detection for URL or domain

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

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)

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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments

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 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

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2024-02-29 10:53:27 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

27 of 38 (71.05%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ywh2iqami66tymubauwozxlc4ycqvj2mrm4jltboinzg2ebp47ea._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

3441127e4971119979e8775857cc45ea4e263a9fd7d49295bbcebceea949998c

AgentTesla

4b7ba4a99e9ce1f3363fb89f18c3b0ec0af1fe4466ae14f8466e2a7cf23eb825

AgentTesla

e68a0da390baf3802baa117bce98b4b3bcbd4f0d0f1355df483d1c5366206921

AgentTesla

+ 5'363 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240229-rqptcacc38/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Suspicious use of SetThreadContext

Looks up external IP address via web service

Checks computer location settings

AgentTesla

Unpacked files

SH256 hash:

72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628

MD5 hash:

2a8240bba06e832ee5d136a0a7e5b5b9

SHA1 hash:

de49d9b33004a4a622a4279b3ee2b3e3e5cd012b

Link:

https://www.unpac.me/results/10bfda39-f256-40cf-a02e-0dcaa433bede/

SH256 hash:

6355efe3ca3c3b968fb6f9cef0fc7d560491a5de39a86f26239854001fc85cb2

MD5 hash:

db8eb8822609e9c73b609f5445795c24

SHA1 hash:

d7e20fc4f8d169b48a881a18b6d0f406720d0f38

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

Link:

https://www.unpac.me/results/10bfda39-f256-40cf-a02e-0dcaa433bede/

Parent samples :
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SH256 hash:

a1641e650531f49b704a7097303941766fbbbc355e96d9a38d37ee59fcfbf803

MD5 hash:

503070be34bb3b7304901df0c718a291

SHA1 hash:

1bfcaebc578fc50415b9c56e254cf7a412bd12d8

Link:

https://www.unpac.me/results/10bfda39-f256-40cf-a02e-0dcaa433bede/

SH256 hash:

14b5a3dc1d7738e8e1b41c4938c7a6123737e94720b7adb44773941892440b4f

MD5 hash:

8649e7d4fa7d68b7ae8c5c82651854e7

SHA1 hash:

03c114b4256661e9d32d8162361efbcf688d47d4

Link:

https://www.unpac.me/results/10bfda39-f256-40cf-a02e-0dcaa433bede/

SH256 hash:

c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8

MD5 hash:

b5b730da4de15b8207d27539f547552a

SHA1 hash:

87108cf3e9f23675b540cc03da915f743daee4f0

Link:

https://www.unpac.me/results/10bfda39-f256-40cf-a02e-0dcaa433bede/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c58fa4400c47/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/c58fa4400c47bd3c3281052cecdd62e6050aa74c8b3895cc2e43726d102fe7c8

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 Create hunting rule
Author:	ditekshen
Description:	AgentTeslaV3 infostealer payload

Rule name:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

Rule name:	INDICATOR_EXE_Packed_GEN01 Create hunting rule
Author:	ditekSHen
Description:	Detect packed .NET executables. Mostly AgentTeslaV4.

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
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 Create hunting rule
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 Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many file transfer clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Windows vault credential objects. Observed in infostealers

Rule name:	malware_Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

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

Rule name:	Windows_Generic_Threat_9f4a80b2 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_AgentTesla_ebf431a8 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla