MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284. 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

Expiro

Vendor detections: 18

Intelligence 18 IOCs YARA 23 File information Comments

SHA256 hash:	c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284
SHA3-384 hash:	6e745ec888c8d87853608c725a157e9c4cd4c0ca0b9f323255646cb616c0c85dc7edb1c4a4847f6eead9f3c9a87e8071
SHA1 hash:	fcd136e9f73260ae3e20e67a65408b0a082b99f7
MD5 hash:	f8a72ea0a65f86a865a8b09b49f76fb0
humanhash:	sad-kansas-cat-montana
File name:	c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284
Download:	download sample
Signature	Expiro Create hunting rule
File size:	673'280 bytes
First seen:	2025-06-25 07:55:35 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	9f4693fc0c511135129493f2161d1e86 (259 x Neshta, 15 x AgentTesla, 15 x Formbook)
ssdeep	12288:e9CqY8xewVHK6RgIZOWzxZqfny+LSe5/9qRA8YAC88iA0QWNtMR2Nz7:d8xNqPIDnITSe5/9jSC8A0LERm7
Threatray	974 similar samples on MalwareBazaar
TLSH	T152E4237AE2D0A471C07729F2CC43E0B04DB0EEF8A81893E6D565FA5DD8796E53D2D049
TrID	93.1% (.EXE) Win32 Executable Borland Delphi 6 (262638/61) 2.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 1.5% (.EXE) Win32 Executable (generic) (4504/4/1) 0.7% (.EXE) Win16/32 Executable Delphi generic (2072/23) 0.7% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
Reporter	TheRavenFile
Tags:	exe Expiro lockbit lockbit4 lockbit4.0 Ransomware

RakeshKrish12

Source: https://github.com/TheRavenFile/Daily-Hunt/blob/main/LockBit%204.0%20Ransomware

Intelligence

File Origin

# of uploads :

# of downloads :

913

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284.exe

Verdict:

Malicious activity

Analysis date:

2025-06-25 07:59:52 UTC

Tags:

m0yv neshta ransomware auto worm stealer maldoc qrcode

Link:

https://app.any.run/tasks/6ce53132-4b8e-4e0d-825d-d8c8d5e6925e

Note:

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

Detection:

Neshta

Link:

https://www.capesandbox.com/analysis/11054/

Detection(s):

Win.Trojan.Neshuta-1

SecuriteInfo.com.Win32.Expiro-3.UNOFFICIAL

Win.Virus.Neshta-7101689-0

Win.Trojan.Jadtre-5

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=685bab7e32ed47a3a8d6ed5c

Tags:

ransomware neshta virus blic

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the Windows subdirectories

Replacing files

Modifying a system file

Replacing executable files

Creating a window

Using the Windows Management Instrumentation requests

Modifies multiple files

Moving a file to the Program Files subdirectory

Moving a file to the Program Files directory

Creating a file in the %temp% subdirectories

Сreating synchronization primitives

Creating a process from a recently created file

Creating a file in the Windows directory

Modifying an executable file

Creating a file in the %AppData% directory

Launching a service

Searching for synchronization primitives

Modifying a system executable file

Creating a file in the %AppData% subdirectories

Connection attempt to an infection source

Launching a process

Moving a recently created file

Loading a system driver

Creating a file

Creating a file in the Program Files directory

Creating a file in the Program Files subdirectories

Changing a file

Connection attempt

Creating a file in the mass storage device

Query of malicious DNS domain

Enabling autorun for a service

Enabling autorun with the shell\open\command registry branches

Sending an HTTP GET request to an infection source

Enabling autorun by creating a file

Encrypting user's files

Sending an HTTP POST request to an infection source

Infecting executable files

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

borland_delphi fingerprint neshta overlay overlay packed packed packer_detected virus winlock

Link:

https://www.filescan.io/uploads/685bab863faf8fcd7d4106f5/reports/20832921-03f2-4314-92e0-6376b076f6ab/overview

Verdict:

Malicious

Labled as:

Virus.Neshta

Link:

https://www.hybrid-analysis.com/sample/c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

Malware family:

Neshta

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/b6b4e94e-25cf-47b0-b697-c762513c736c

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) Win 32 Exe x86

Link:

https://app.malva.re/file/f8a72ea0a65f86a865a8b09b49f76fb0

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284/

Verdict:

Malicious

Link:

https://tip.neiki.dev/file/c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

Threat name:

Win32.Virus.Neshta

Status:

Malicious

First seen:

2025-04-21 09:25:23 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

35 of 36 (97.22%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=yszharhmpmxui3ifiinr3cxefu7gwpa24z7vlhbsgg77uz4fwkca._file

Verdict:

malicious

Label(s):

neshta

Expiro

593d89afb5fddfe947207dc69f93816c665e480ecd2a78c9eaab108b9799691e

Expiro

77fff1c59aace50f9bbb9184b1086cccb57df0cb5d3b10589a9b6b91283aa719

Expiro

7879a69cbb43f52e68e7d93e36e427ea20c699b89d6cd47fd124dc205adebccf

Expiro

c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

Expiro

db159b3ca4dd0378def0c98c147e02e79928b4dc2d40968dc5b68882ea19f202

Expiro

ec01b76e956bceeec02a2bf5004ec837639562729f5ea4fd61f2f9f1ea0e803f

Expiro

ed0b66043d5223c79f2206468bd12d369d933e0db2234508702ce7402579835f

Expiro

error

Expiro

+ 964 additional samples on MalwareBazaar

Result

Malware family:

neshta

Score:

10/10

Tags:

family:neshta credential_access discovery persistence spyware stealer upx

Link:

https://tria.ge/reports/250625-jswexaek4t/

Behaviour

Checks SCSI registry key(s)

Checks processor information in registry

Modifies data under HKEY_USERS

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: LoadsDriver

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Volume Shadow Copy service COM API

Browser Information Discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Drops file in Program Files directory

Drops file in Windows directory

Drops file in System32 directory

UPX packed file

Enumerates connected drives

Checks computer location settings

Credentials from Password Stores: Windows Credential Manager

Drops startup file

Executes dropped EXE

Modifies system executable filetype association

Reads user/profile data of web browsers

Detect Neshta payload

Neshta

Neshta family

Verdict:

Malicious

Tags:

trojan neshta Win.Trojan.Neshuta-1 expiro

YARA:

EXE_Virus_Neshta_March2024 Windows_Virus_Neshta_2a5a14c8 MAL_Neshta_Generic MALWARE_Win_Neshta MAL_Malware_Imphash_Mar23_1

Link:

https://app.threat.zone/submission/c7358ff4-652b-4395-8143-9930e7df175d

Unpacked files

SH256 hash:

c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

MD5 hash:

f8a72ea0a65f86a865a8b09b49f76fb0

SHA1 hash:

fcd136e9f73260ae3e20e67a65408b0a082b99f7

Detections:

win_neshta_g0

Neshta

Link:

https://www.unpac.me/results/d982f045-2bbc-4e42-a2f7-69647218fea4/

Malware family:

LockBit.v4

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c4b27044ec7b/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Expiro

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/c4b27044ec7b2f446d05421b1d8ae42d3e6b3c1ae67f559c3231bffa6785b284

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:	Borland Create hunting rule
Author:	malware-lu

Rule name:	EXE_Virus_Neshta_March2024 Create hunting rule
Author:	Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell

Rule name:	lb4_hashing_alg Create hunting rule
Author:	0x0d4y
Description:	This rule detects the custom hashing algorithm of Lockbit4.0 unpacked

Rule name:	lb4_packer_was_detected Create hunting rule
Author:	0x0d4y
Description:	Detect the packer used by Lockbit4.0

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	MALWARE_Win_Neshta Create hunting rule
Author:	ditekSHen
Description:	Detects Neshta

Rule name:	mal_lockbit4_hashing_alg_win_feb24 Create hunting rule
Author:	0x0d4y
Description:	This rule detects the custom hashing algorithm of Lockbit4.0 unpacked
Reference:	https://0x0d4y.blog/lockbit4-0-evasion-tales/

Rule name:	mal_lockbit4_packed_feb24 Create hunting rule
Author:	0x0d4y
Description:	Detect the packer used by Lockbit4.0
Reference:	https://0x0d4y.blog/lockbit4-0-evasion-tales/

Rule name:	MAL_lockbit4_rc4_alg Create hunting rule
Author:	0x0d4y
Description:	Detect the implementation of RC4 Algorithm by Lockbit4.0

Rule name:	mal_lockbit4_rc4_win_feb24 Create hunting rule
Author:	0x0d4y
Description:	Detect the implementation of RC4 Algorithm by Lockbit4.0
Reference:	https://0x0d4y.blog/lockbit4-0-evasion-tales/

Rule name:	MAL_Malware_Imphash_Mar23_1 Create hunting rule
Author:	Arnim Rupp
Description:	Detects malware by known bad imphash or rich_pe_header_hash
Reference:	https://yaraify.abuse.ch/statistics/

Rule name:	MAL_Neshta_Generic Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Neshta malware
Reference:	Internal Research

Rule name:	MAL_Neshta_Generic_RID2DC9 Create hunting rule
Author:	Florian Roth
Description:	Detects Neshta malware
Reference:	Internal Research

Rule name:	MAL_packer_lb_was_detected Create hunting rule
Author:	0x0d4y
Description:	Detect the packer used by Lockbit4.0

Rule name:	neshta_v1 Create hunting rule
Author:	RandomMalware

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	Windows_Generic_Threat_ebf62328 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Virus_Neshta_2a5a14c8 Create hunting rule
Author:	Elastic Security

Rule name:	win_m0yv_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.m0yv.

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/11054/

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_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
MULTIMEDIA_API	Can Play Multimedia	gdi32.dll::StretchDIBits
SHELL_API	Manipulates System Shell	shell32.dll::ShellExecuteA
WIN32_PROCESS_API	Can Create Process and Threads	kernel32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	kernel32.dll::GetDriveTypeA kernel32.dll::GetStartupInfoA kernel32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	kernel32.dll::WinExec
WIN_BASE_IO_API	Can Create Files	kernel32.dll::CreateDirectoryA kernel32.dll::CreateFileA kernel32.dll::DeleteFileA kernel32.dll::GetWindowsDirectoryA kernel32.dll::GetFileAttributesA kernel32.dll::FindFirstFileA
WIN_REG_API	Can Manipulate Windows Registry	advapi32.dll::RegOpenKeyExA advapi32.dll::RegQueryValueExA advapi32.dll::RegSetValueExA

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