MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682. 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: 7

Intelligence 7 IOCs YARA 9 File information Comments

SHA256 hash:	ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682
SHA3-384 hash:	a689016abe0b50cd3757327f1a736d2f3af127b8bbbb0d0eebe4209d7a264dbad69868aff3ec1edefd8a75de23e628c3
SHA1 hash:	534b502b752f931574e522e284947ef1ff249362
MD5 hash:	36832d2532adddee81abdfb21205c47d
humanhash:	oregon-october-cold-pennsylvania
File name:	PURCHASE ORDER.pdf.rar
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	564'639 bytes
First seen:	2023-07-29 09:35:17 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:ByfHirz41eMxgj9rLZqkBfrMCDCgYdWEoYEHgQpEX58OfWwMYl:cfH6z41eYiHBoCOgYdhj0gTX2wnl
TLSH	T1F7C423A96B77A2B253ACFB9806380B4EF9A49E7F48B1B157C02016C44CBE55F1446DAC
TrID	58.3% (.RAR) RAR compressed archive (v-4.x) (7000/1) 41.6% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter	cocaman
Tags:	AgentTesla rar

cocaman

Malicious email (T1566.001)
From: "=?UTF-8?B?6ZmI5bCP5qyi?= <sales06@zjjizhi.com>" (likely spoofed)
Received: "from zjjizhi.com (unknown [185.225.74.18]) "
Date: "29 Jul 2023 08:47:59 +0200"
Subject: "Inquiry"
Attachment: "PURCHASE ORDER.pdf.rar"

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:	$495,950.pdf.exe
File size:	644'096 bytes
SHA256 hash:	9edefc168186e3a7ea6785affc672f91cbe4f592d4b84c75435866f16eddc82b
MD5 hash:	c7f06a115ff0f7c5800abcbe0f15fcbe
MIME type:	application/x-dosexec
Signature	AgentTesla

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Malware.28929.RarHeur.UNOFFICIAL

Result

Verdict:

Unknown

File Type:

PE File

Link:

https://app.docguard.net/ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682/results/dashboard

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

formbook masquerade packed

Link:

https://www.filescan.io/uploads/64c4dd83907b8030b17c53f5/reports/28ed4706-718c-494f-9060-5cfbf3431f8d/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682

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.

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682/

Threat name:

ByteCode-MSIL.Spyware.Genkryptikagen

Status:

Malicious

First seen:

2023-07-27 06:50:33 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

27 of 38 (71.05%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=55amnd6lqpuochyfkw7zgxh4mjgvtckp4g46eqimldpm6hub62ba._file

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla collection keylogger spyware stealer trojan

Link:

https://tria.ge/reports/230729-rtkc2aec81/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Enumerates physical storage devices

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Checks computer location settings

AgentTesla

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/ef40c68fcb83e8e11f0555bf935cfc624d59894fe1b9e2410c58decf1e81f682

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:	AgentTeslaV4 Create hunting rule
Author:	Rony (r0ny_123)

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

Rule name:	MSIL_SUSP_OBFUSC_XorStringsNet Create hunting rule
Author:	dr4k0nia
Description:	Detects XorStringsNET string encryption, and other obfuscators derived from it
Reference:	https://github.com/dr4k0nia/yara-rules

Rule name:	msil_susp_obf_xorstringsnet Create hunting rule
Author:	dr4k0nia
Description:	Detects XorStringsNET string encryption, and other obfuscators derived from it

Rule name:	pe_imphash Create hunting rule

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
Reference:	Internal Research

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation_RID34A4 Create hunting rule
Author:	Florian Roth
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
Reference:	Internal Research