MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105. 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 16 File information Comments

SHA256 hash:	66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105
SHA3-384 hash:	14d1cf5709e5ecc1abcc8e69ca7bd6e08a51742ab046c63439c14cceaceeec575f0c97e42f7642ab68feaac2ddfd17bc
SHA1 hash:	5896bacd7f8b694c6e1d7ddffea12a60e179af3c
MD5 hash:	cd2c1efbea5d6b1cd4367c0de3b252b5
humanhash:	fillet-dakota-oregon-alaska
File name:	FIYAT TEKLIF YATAĞAN TERMİK TEKLİF NS21-42471-100KLM.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	732'160 bytes
First seen:	2024-03-07 17:55:48 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	12288:R6FO1l1nQK9/jU5XeAtXCyoyWy/wf/df5EsOr3bpEJm5rf+rxVF/kfsA62QBW:d5/jUkEhoyM3fvOfCJcf+rksF2
Threatray	5'064 similar samples on MalwareBazaar
TLSH	T171F4129272FA4759E9BBA3748430550147B9BB277A62E32F0DC0A0ED1D737418F06BA7
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)
File icon (PE):
dhash icon	0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter	abuse_ch
Tags:	AgentTesla exe geo TUR

Intelligence

File Origin

# of uploads :

# of downloads :

344

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105.exe

Verdict:

Malicious activity

Analysis date:

2024-03-07 18:27:01 UTC

Tags:

stealer agenttesla

Link:

https://app.any.run/tasks/f22699fb-f684-4397-bfb0-1addbc95cd0f

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.Generic-10022562-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Adding an exclusion to Microsoft Defender

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105

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/31dca085-cdac-4743-ab88-78fd90a53ff2

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1404983

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Adds a directory exclusion to Windows Defender

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to log keystrokes (.Net Source)

Contains functionality to register a low level keyboard hook

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Injects a PE file into a foreign processes

Installs a global keyboard hook

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

Snort IDS alert for network traffic

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105/

Threat name:

Win32.Trojan.LummaStealer

Status:

Malicious

First seen:

2024-03-07 17:56:07 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=mykz65zrjxgw4a6yx5zhj3usge7pilk6rjakw76cmsk53by6oecq._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

46af3345cf41ac579b9556b69437601ca34f5cbff48fa3b65b5066105aefe99b

AgentTesla

73c38b0fbae15628d39515ffbbe8d71aa8b5ff7c6891ec5f8c1f2fc6a1f0210c

AgentTesla

9bc899defa6d47d99cefedf9b92f85b819c1ef087e1c851e767da436cc402f23

AgentTesla

9e3efbcbbc7329e7b89e1dfbd094593debfd57fcb860f5f14c5a0ff97e7c1293

AgentTesla

aa69a4dd3203b34b4a1dfdf334ba8b655768f6e6c46165a095497b45222580b5

AgentTesla

aec212c8fd71db1a982c117129c0ecf7ba0323644d339e8c8e3bb222b96505c6

AgentTesla

+ 5'054 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

7/10

Tags:

n/a

Link:

https://tria.ge/reports/240307-wh2kdsad6w/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Checks computer location settings

Unpacked files

SH256 hash:

40908209d3f3f61056c113e2dd9e15330d30608a2f8384085577d245b34f02ef

MD5 hash:

0d925e03310bb5160cc6738bfd5ede0f

SHA1 hash:

df1204f4f8f7374d2a6a490f01a16eb2f3d8814b

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/914b9347-e6b6-4885-9b47-2dd6995a62bd/

Parent samples :

6ecf0da45be85e0af57e9c74de09ececa8240f1c9ab48066c0f34ce18c4a7fab
66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105
0101e4877a01808c4c44a9f3b7859907629dbdbd15cdf012647d474eed5fe53f
15cba0698df52b0c45e7fe358fa293e8c17d8ffea68f061b62a17b478c4ffbd0
e13dca26aaed3f8be612ce23343fad1266f7e019bdc423bda3493c447d03e7f8
1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab
ff2f0f91ad490a40471063e0d41f955d29b24b9387b473e4248cced15faa4730

SH256 hash:

d00380d935eee4205802b46b68c4cc802064b366ef09a651f8c501e903db229e

MD5 hash:

71608f4654128035f0e3f82a7b4fe331

SHA1 hash:

bf15c3670fc5bb24c0126e405629bbdcadd3b9c4

Link:

https://www.unpac.me/results/914b9347-e6b6-4885-9b47-2dd6995a62bd/

SH256 hash:

0ba1c491c517da1787bb4ad919a96652c2c13ca23a02fe9f77ff72d59fb5efeb

MD5 hash:

f88c039c17f78b84854ec76ebc7117ed

SHA1 hash:

b964e0224f82e1b9800e896091c577f377e54aaf

Link:

https://www.unpac.me/results/914b9347-e6b6-4885-9b47-2dd6995a62bd/

SH256 hash:

6636ac1559df700f6e969acd3cd253863f129c61162377da8f055a34549f96af

MD5 hash:

1089d190969bb9b74a75b4245a6d8b5d

SHA1 hash:

35ef5cd6afa259d03fe585254d0659cd37a806fb

Link:

https://www.unpac.me/results/914b9347-e6b6-4885-9b47-2dd6995a62bd/

SH256 hash:

66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105

MD5 hash:

cd2c1efbea5d6b1cd4367c0de3b252b5

SHA1 hash:

5896bacd7f8b694c6e1d7ddffea12a60e179af3c

Link:

https://www.unpac.me/results/914b9347-e6b6-4885-9b47-2dd6995a62bd/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/66159f77314d/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/66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105

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:	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:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

exe 66159f77314dcd6e03d8bf7274ee92313ef42d5e8a40ab7fc26495dd871e7105

(this sample)

Delivery method

Distributed via e-mail attachment

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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