MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 7c37658b857d29e661fe66bfc5a66bdace06d5e0873d4285bb005cb993998033. 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: 15
| SHA256 hash: | 7c37658b857d29e661fe66bfc5a66bdace06d5e0873d4285bb005cb993998033 |
|---|---|
| SHA3-384 hash: | efdb6e4c138f05672471f3832effabe2004f9c4af7cf5be8e3c08f97847dd1d75a74cd715ad74905c6d1d305686d7d92 |
| SHA1 hash: | a0a1a65ddbbae9ca1723fb3be338867de3724925 |
| MD5 hash: | 5597e031c69756f20ac563390a86b1cc |
| humanhash: | montana-mountain-magnesium-uniform |
| File name: | 7c37658b857d29e661fe66bfc5a66bdace06d5e0873d4285bb005cb993998033 |
| Download: | download sample |
| Signature | Expiro |
| File size: | 2'924'544 bytes |
| First seen: | 2025-10-09 14:20:31 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 35d2050fe238a310bd8f0a00357bc98a (1 x PhantomStealer, 1 x Expiro) |
| ssdeep | 49152:wfI5Ns2xpSbAIZ6GrUuACNc7KdC9QcGYcNCDmg27RnWGj:9p2Nc7bGhCD527BWG |
| Threatray | 375 similar samples on MalwareBazaar |
| TLSH | T16DD5EF24E3D801F8D83BD734CA619332E6B1B8960774E58B0699D6592F73E919B3F312 |
| TrID | 48.7% (.EXE) Win64 Executable (generic) (10522/11/4) 23.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.3% (.EXE) OS/2 Executable (generic) (2029/13) 9.2% (.EXE) Generic Win/DOS Executable (2002/3) 9.2% (.EXE) DOS Executable Generic (2000/1) |
| Magika | pebin |
| Reporter |  adrian__luca |
| Tags: | exe Expiro |
Intelligence
File Origin
# of uploads :
1
# of downloads :
53
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7c37658b857d29e661fe66bfc5a66bdace06d5e0873d4285bb005cb993998033
Verdict:
Malicious activity
Analysis date:
2025-10-09 17:25:41 UTC
Tags:
m0yv auto-startup
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
Tags:
autorun expiro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Modifying a system executable file
Creating a file in the %AppData% directory
Launching a service
Launching a process
Searching for synchronization primitives
Creating a file in the system32 subdirectories
Modifying an executable file
Connection attempt to an infection source
Creating a file
Enabling autorun for a service
Query of malicious DNS domain
Infecting executable files
Enabling autorun by creating a file
Unauthorized injection to a system process
Sending an HTTP POST request to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
crypto fingerprint hacktool microsoft_visual_cc packed
Verdict:
Malicious
Labled as:
Win64.Expiro.Generic
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-09-18T20:13:00Z UTC
Last seen:
2025-09-22T14:59:00Z UTC
Hits:
~100
Malware family:
DarkCloud
Verdict:
Malicious
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Threat name:
Win64.Virus.Expiro
Status:
Malicious
First seen:
2025-09-19 01:30:43 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
expiro
darkcloudstealer
Similar samples:
+ 365 additional samples on MalwareBazaar
Result
Malware family:
darkcloud
Score:
10/10
Tags:
family:darkcloud ransomware spyware stealer
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Reads user/profile data of web browsers
DarkCloud
Darkcloud family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
7c37658b857d29e661fe66bfc5a66bdace06d5e0873d4285bb005cb993998033
MD5 hash:
5597e031c69756f20ac563390a86b1cc
SHA1 hash:
a0a1a65ddbbae9ca1723fb3be338867de3724925
Malware family:
Expiro
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__MemoryWorkingSet |
|---|---|
| Author: | Fernando Mercês |
| Description: | Anti-debug process memory working set size check |
| Reference: | http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/ |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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