MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735. 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: 17


Intelligence 17 IOCs YARA 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
SHA3-384 hash: 4d6fda66782c4f6f93d64b9e420a14e5129ffc4b1e7c9c521737a489ae1b29b3b0bedbfdcad333ca1c33445313b17c19
SHA1 hash: 322b9944a7c86ad13aa27900b415df2d396d125b
MD5 hash: 097ab66d0e9faaba1cfe52a297414c49
humanhash: purple-fillet-eighteen-carolina
File name:PO_NO_23ESW.scr.exe
Download: download sample
Signature Expiro
Create hunting rule
File size:2'546'688 bytes
First seen:2025-07-16 13:09:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 49152:cWg5tQ7aXH7d+nincYiyjjepGLH5NZSc5iDmg27RnWGj:Ng56QhgSZDS5D527BWG
Threatray 2'488 similar samples on MalwareBazaar
TLSH T183C5022373DD8361C7B25273BA65B701AEBF7C2605A5F86B2FD4093DE960162421E633
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter James_inthe_box
Tags:exe Expiro

Intelligence

File Origin
# of uploads :
1
# of downloads :
35
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO_NO_23ESW.scr.exe
Verdict:
Malicious activity
Analysis date:
2025-07-16 13:13:52 UTC
Tags:
m0yv
Link:
https://app.any.run/tasks/bd7d444c-20e5-41b0-958d-cabcd0339006

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
A310Logger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/14855/
Detection(s):
SecuriteInfo.com.Win32.Expiro-1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Win32.Expiro-2.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6877a4d32f623871a5ef0964
Tags:
autoit emotet expiro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Modifying a system executable file
Creating a window
Launching a service
Creating a file in the %temp% directory
Launching a process
Searching for synchronization primitives
Creating a file in the system32 subdirectories
Loading a system driver
Connection attempt to an infection source
Modifying an executable file
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Searching for the window
Enabling autorun for a service
Query of malicious DNS domain
Stealing user critical data
Infecting executable files
Sending an HTTP POST request to an infection source
Unauthorized injection to a system process
Sending an HTTP GET request to an infection source
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint fingerprint hacktool keylogger masquerade microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/6877a4ce8a7d628a81b24cad/reports/f7862492-32f8-4615-837e-b752d93a5ec8/overview
Verdict:
Malicious
Labled as:
Expiro.Generic
Link:
https://www.hybrid-analysis.com/sample/903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
Malware family:
Expiro
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/606af293-de18-4b58-a565-b8f414aa24ba
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/097ab66d0e9faaba1cfe52a297414c49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735/
Verdict:
Malicious
Threat:
Win32.Virus.Expiro
Link:
https://tip.neiki.dev/file/903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
Threat name:
Win32.Virus.Expiro
Create hunting rule
Status:
Malicious
First seen:
2025-07-15 17:44:06 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
32 of 37 (86.49%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sa5vjhznzgszkedc6teudlyo5mxlpmt6gf3vq56rxe3arq4wc42q._file
Verdict:
malicious
Label(s):
expiro
Create hunting rule
unc_loader_036
Create hunting rule
Similar samples:
0064c892c106bad3b10ffa879aa3522cf344a0dbdd9e09de1e7f8f8ca99b92df
Expiro
5ae86c1b231a95b8eaa105ca9214589dea3d22efd601cd2018f7a5e6c474ddca
Expiro
903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
Expiro
9a759f2ef8ee16b697f30aab51fc726f9697b338e0aba56c063860146bbfc76b
Expiro
a77fe5da2091d1ca156b8d6713e2af40cc0d66449011c59b699cbc652a07ee34
Expiro
b336830d627101633db934f8d48606639c70d133a5985026bc250c035e887faf
Expiro
error
Expiro
+ 2'478 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery spyware stealer
Link:
https://tria.ge/reports/250716-qenlgahq3s/
Behaviour
Checks SCSI registry key(s)
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
AutoIT Executable
Drops file in System32 directory
Executes dropped EXE
Reads user/profile data of web browsers
Verdict:
Malicious
Tags:
trojan expiro Expiro
YARA:
Windows_Virus_Expiro_84e99ff0
Link:
https://app.threat.zone/submission/d351e30e-66ff-4cb4-b52c-29d300e93a22
Unpacked files
SH256 hash:
903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735
MD5 hash:
097ab66d0e9faaba1cfe52a297414c49
SHA1 hash:
322b9944a7c86ad13aa27900b415df2d396d125b
Link:
https://www.unpac.me/results/4e9c7c7b-b8aa-4b47-a8ea-4bf85fdca1f8/
SH256 hash:
43d340f6a5f9970f19e9719b43e260904df8a9699636e2054727b85177251ef3
MD5 hash:
bf87e0c4c6ff254ea3dfa3a8a6eb3cc3
SHA1 hash:
86e9f23c874be63c5669f41b9555bf2d393f1512
Detections:
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
MALWARE_Win_A310Logger
Create hunting rule
MALWARE_Win_DarkCloud
Create hunting rule
Link:
https://www.unpac.me/results/4e9c7c7b-b8aa-4b47-a8ea-4bf85fdca1f8/
SH256 hash:
3b75425895af4ae3186b36277553641e37ca1d620ae18d68e40d13351b54de6a
MD5 hash:
94d1531b52774dce52a89e33646d5b1d
SHA1 hash:
29bf887b025b97bd7a9e1e261852ba824234a625
Link:
https://www.unpac.me/results/4e9c7c7b-b8aa-4b47-a8ea-4bf85fdca1f8/
SH256 hash:
abdd6f31a909b0b10e30ced74a1f6f037adf1f61a8a842048dbc254d6f076169
MD5 hash:
c33a7f0e25bb3f4d3c19fc8441e9d12b
SHA1 hash:
0286b277e97b9f7c217a0d029e8144f8e20b40b9
Link:
https://www.unpac.me/results/4e9c7c7b-b8aa-4b47-a8ea-4bf85fdca1f8/
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/903b549f2dc9a5951062f4c941af0eeb2eb7b27e31775877d1b93608c3961735

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:cobalt_strike_beacon_detected
Create hunting rule
Author:0x0d4y
Description:This rule detects cobalt strike beacons.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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_CC_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
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_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:MALWARE_Win_A310Logger
Create hunting rule
Author:ditekSHen
Description:Detects A310Logger
Rule name:MALWARE_Win_DarkCloud
Create hunting rule
Author:ditekSHen
Description:Detects DarkCloud infostealer
Rule name:ProtectSharewareV11eCompservCMS
Create hunting rule
Author:malware-lu
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vba
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
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:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
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_Trojan_DarkCloud_9905abce
Create hunting rule
Author:Elastic Security
Rule name:Windows_Virus_Expiro_84e99ff0
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.
Rule name:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/14855/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

Comments