MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab. 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:	1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab
SHA3-384 hash:	1018f90234c192fdf463e4c2d6f083ae4328ba95b208ab4f2a4d4647e1263fa775e7011b1f00ab1e9ff95fe819e16007
SHA1 hash:	a8322fcf93a7f813fb00967ac1dd146925da898a
MD5 hash:	b47aa4999ce1e6d0c0e63fa131f49711
humanhash:	finch-nuts-speaker-stairway
File name:	Halkbank_Ekstre_2024 0017_164557_198850.pdf.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	724'992 bytes
First seen:	2024-03-12 07:15:20 UTC
Last seen:	2024-03-12 13:35:37 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:bcFsJTENl3l5yqQHBb2eEm9bUerxZwRhgzYExKi5z8B4olDQM5o68PBZ:omxENlX8FbUsyH0xKi1biDX5on
TLSH	T1D5F41284357C2A63CABDB6F81435246447FA211A342AE3EC4ED379CB59F9F404AA4E17
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):
dhash icon	d4d4d4d4d4d4c4c4 (15 x AgentTesla, 10 x Formbook, 1 x SnakeKeylogger)
Reporter	abuse_ch
Tags:	AgentTesla exe geo Halkbank TUR

Intelligence

File Origin

# of uploads :

# of downloads :

369

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab.exe

Verdict:

Malicious activity

Analysis date:

2024-03-12 07:34:39 UTC

Tags:

stealer agenttesla

Link:

https://app.any.run/tasks/0f8ccc07-c795-456a-ab9b-4374c99cb638

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/478726/

Detection(s):

SecuriteInfo.com.Win32.PWSX-gen.24556.540.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

Creating a file in the %AppData% subdirectories

Reading critical registry keys

Setting a keyboard event handler

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Stealing user critical data

Adding an exclusion to Microsoft Defender

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

masquerade packed

Link:

https://www.filescan.io/uploads/65f00135c1137bbf14986354/reports/2b1802a3-7127-42a4-8aa9-bcc6512a769f/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab

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/a993b868-aae7-49bf-84d0-e30357b60a1e

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1407264

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

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)

Initial sample is a PE file and has a suspicious name

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

Sigma detected: Suspicious Double Extension File Execution

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)

Uses an obfuscated file name to hide its real file extension (double extension)

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab/

Threat name:

ByteCode-MSIL.Trojan.FormBook

Status:

Malicious

First seen:

2024-03-12 04:58:58 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=de4m6mlg4nie73ic7sujuetz5ieoiomvhg6quh23oelrdrs6zsvq._file

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger persistence spyware stealer trojan

Link:

https://tria.ge/reports/240312-h3thmadc65/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Adds Run key to start application

Checks computer location settings

Reads user/profile data of local email clients

Reads user/profile data of web browsers

AgentTesla

Unpacked files

SH256 hash:

06a1ae787e808d6287de314be8bec64ef2e0d3bc1bf2ea71ae268c7b8fb19e2d

MD5 hash:

91b39e533d48f5fa25ac604da90b3d8d

SHA1 hash:

f5dadf1e8fcbe64609e4cd78a27e2810f7a6e69e

Link:

https://www.unpac.me/results/582b7dde-3653-4b46-8dad-aeb2589dacf6/

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/582b7dde-3653-4b46-8dad-aeb2589dacf6/

Parent samples :

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

SH256 hash:

c8c1020fe926cc1851b73c1915ad32e2fc393dccb402782aca8f4ea6379ba84d

MD5 hash:

ef7cf89d9ec52b18a8f5b6ee49820f46

SHA1 hash:

dcf9cb9bb3f72ca4b3cc0c00b27bd9ce10b554bb

Link:

https://www.unpac.me/results/582b7dde-3653-4b46-8dad-aeb2589dacf6/

SH256 hash:

c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b

MD5 hash:

7c7fb6daa78beb69128991ff893143ed

SHA1 hash:

c01bb99984b12b84129db80eae1d5d8341a358e2

Link:

https://www.unpac.me/results/582b7dde-3653-4b46-8dad-aeb2589dacf6/

SH256 hash:

c876bab0d0bf3b32babd5806c6df2722b0e65427e35de3528a5d27965fa7e00f

MD5 hash:

e6f98f2e636b69437804cf038efc2a3a

SHA1 hash:

1b3bb25206904d31cb9b1143cf6f7c1218fcb350

Link:

https://www.unpac.me/results/582b7dde-3653-4b46-8dad-aeb2589dacf6/

SH256 hash:

1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab

MD5 hash:

b47aa4999ce1e6d0c0e63fa131f49711

SHA1 hash:

a8322fcf93a7f813fb00967ac1dd146925da898a

Link:

https://www.unpac.me/results/582b7dde-3653-4b46-8dad-aeb2589dacf6/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/1938cf3166e3/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/1938cf3166e3504fed02fca89a1279ea08e4399539bd0a1f5b711711c65eccab

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.

Cape

https://www.capesandbox.com/analysis/478726/

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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