MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
SHA3-384 hash: 822b394fdcf03615f775fcaff7fed95c827e36953a57eaabd510091e7f41227df638b285437309b4eeb6cc206d7db4ca
SHA1 hash: b7846a9fd3c6ac93e1478d10bf841bfc18f00c4c
MD5 hash: 8f590be1c5bf09ce8228f35c91c9bb66
humanhash: king-alaska-aspen-high
File name:b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
Download: download sample
Signature Expiro
Create hunting rule
File size:1'855'488 bytes
First seen:2026-06-08 09:21:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'192 x AgentTesla, 20'344 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 49152:GyPzYZ0/glLwedm81y+T5ZpZQFzgvtZEj6+up:Gy8O/6wedh1hZp6tgvt+j61
Threatray 93 similar samples on MalwareBazaar
TLSH T14C852224761BCD27D2954BB1ADE1C4702B748F49DA22C61BABEA3EDF71673A40A44343
TrID 72.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.4% (.EXE) Win64 Executable (generic) (6522/11/2)
4.4% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon 68e48c98b6b6b4c8 (5 x AgentTesla, 2 x a310Logger, 2 x Expiro)
Reporter adrian__luca
Tags:exe Expiro

Intelligence

File Origin
# of uploads :
1
# of downloads :
73
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/0482bcdd-6c38-496b-9fd0-c16f40822841/
Malware family:
n/a
ID:
1
File name:
b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2.exe
Verdict:
Malicious activity
Analysis date:
2026-06-08 09:26:41 UTC
Tags:
netreactor m0yv darkcloud stealer auto-reg phishing upx sinkhole
Link:
https://app.any.run/tasks/d3113981-4e96-4913-a264-5aa59d2e70e6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
DarkCloud
Create hunting rule
Link:
https://www.capesandbox.com/analysis/69734/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a2689e63e9eff6a6b68b8c1
Tags:
shell virus smtp
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Modifying a system executable file
Launching a service
Launching a process
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Searching for synchronization primitives
Creating a file in the system32 subdirectories
Loading a system driver
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Query of malicious DNS domain
Stealing user critical data
Adding an exclusion to Microsoft Defender
Infecting executable files
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 net_reactor obfuscated packed packed vbnet
Link:
https://www.filescan.io/uploads/6a268a038161ac6cb55ca8d1/reports/d064f22b-c269-43e6-b30d-c08aea889bdc/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-07T14:18:00Z UTC
Last seen:
2026-06-10T05:39:00Z UTC
Hits:
~10000
Detections:
Trojan.Agentb.UDP.ServerRequest Trojan.Agent.HTTP.C&C Trojan-Spy.Agent.SMTP.C&C PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Kryplod.gen VHO:Trojan-PSW.Win32.ReaderDB.gen Trojan.Kryplod.UDP.C&C NetTool.PlainTextCredentials.SMTP.C&C
Link:
https://opentip.kaspersky.com/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2/results?tab=lookup
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2b9cb95b-0ae6-4082-bedc-e520c455239e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2/
Verdict:
Malicious
Threat:
Family.M0YV
Link:
https://tip.neiki.dev/file/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
Threat name:
ByteCode-MSIL.Trojan.RedlineStealer
Create hunting rule
Status:
Malicious
First seen:
2026-05-07 19:31:52 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xerwix733ai6cl25s2e2fmtbd7xm63hb27ulelnntjc6comrysra._file
Verdict:
malicious
Label(s):
expiro
Create hunting rule
Similar samples:
00dac80841aec6a8e5e0a8df4b65f0dcc0f8272911bb89a575f74c40f2f3318f
Expiro
3ca1c11c2d4173581e8007b955c912dd1d6abdb1bafe03924aca8cba437df745
Expiro
51bde105a641629948c300d04aecece518f2e96913c48463dcc508a026768120
Expiro
5454862ee4069df3d2058763ab8d8e01abb4114e628f32305817f31f0ad1fe83
Expiro
609466fcae46344a419e4811e83b5299e2b94107bc1956bf71713764a153b1c0
Expiro
6cda4571790efab8e6c0121ab794a410a5e725edd2a72b60d7fe9cb62b7dd4c4
Expiro
cb45d6a207ad4218619ad1b7e1001b55201894ef21f717588e5f3df5122c0583
Expiro
d63374d386483c50ad66754aa271868a235eef4f31d7085bd06c1bef92a7f3c1
Expiro
error
Expiro
fbc06ff8786c69b8a6d731b9527b45a521b2d86faba1d2c190c4fcf470247b49
Expiro
+ 83 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence ransomware spyware stealer
Link:
https://tria.ge/reports/260608-lb98vabs7l/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
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
Suspicious use of SetThreadContext
Adds Run key to start application
Enumerates connected drives
Checks computer location settings
Executes dropped EXE
Reads WinSCP keys stored on the system
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
MD5 hash:
8f590be1c5bf09ce8228f35c91c9bb66
SHA1 hash:
b7846a9fd3c6ac93e1478d10bf841bfc18f00c4c
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
SH256 hash:
f314e9f0c4ed1a8ca77a2ae29cbdca35cfa8195188049c3aa286af2bf48c365a
MD5 hash:
70c259c2d16558276c6ec5b8e4f39338
SHA1 hash:
22c7c48d56b0f2e863927945dbaa7911b64ccf01
Detections:
triage_darkcloud_infostealer
Create hunting rule
triage_expiro_worm
Create hunting rule
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
Parent samples :
2f2d129e4bb5bd850996fc59c9d06d2a85d08d51e3a2694501e9eb52b187230a
b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2
SH256 hash:
10d329d21caaa130466427ff625d0bfae6b1f1d26adfefd9f81f8a63f85b88d0
MD5 hash:
8593639303535cbb65d16fdb01b61e5b
SHA1 hash:
5c91fc8aaa38114227fd329bc9159e5eca903f23
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
SH256 hash:
127297f4d9c39a6adca7ceee06c79f78fa7b26262f00d20e28d5f479189320ec
MD5 hash:
7a1f0b72aea280be519c1e8e2dc03431
SHA1 hash:
a6d0edb615d5d4383e8fc408ef5e731a07797735
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
SH256 hash:
caebf12cf2229d84b4fabdf412326d127d2d9fef20e6ec54198ace170e5110e7
MD5 hash:
0d7d14bd5d98367a66ae34fdaefefab7
SHA1 hash:
c6e7e12d4f2ff0a7faaa92d677b88633bcd8ebcb
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
SH256 hash:
3b75425895af4ae3186b36277553641e37ca1d620ae18d68e40d13351b54de6a
MD5 hash:
94d1531b52774dce52a89e33646d5b1d
SHA1 hash:
29bf887b025b97bd7a9e1e261852ba824234a625
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
SH256 hash:
abdd6f31a909b0b10e30ced74a1f6f037adf1f61a8a842048dbc254d6f076169
MD5 hash:
c33a7f0e25bb3f4d3c19fc8441e9d12b
SHA1 hash:
0286b277e97b9f7c217a0d029e8144f8e20b40b9
Link:
https://www.unpac.me/results/33f4dc7b-69d3-4033-a59c-a4b49ed51a37/
Malware family:
Expiro
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b923645ffbd8/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/b923645ffbd811e12f5d9689a2b2611feecf6ce1d7e8b22dad9a45e13991c4a2

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:NET
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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

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/69734/

Comments