MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
SHA3-384 hash: 112fa33ba6797a7f79ff26936400c59bcce5cf8677fa5b226f986d8fe8709a71667c8502d69d560273732733e08762d2
SHA1 hash: cab15bcdc4d2778896fb9c1e127a8140ae1bba23
MD5 hash: f828044c91ac00afffcd77b4ce680857
humanhash: speaker-oven-sink-thirteen
File name:43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
Download: download sample
Signature Expiro
Create hunting rule
File size:631'808 bytes
First seen:2025-02-14 08:36:42 UTC
Last seen:2025-06-25 07:58:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6ed4f5f04d62b18d96b26d6db7c18840 (239 x SalatStealer, 78 x BitRAT, 42 x RedLineStealer)
ssdeep 12288:m2Nz09CqY8xewVHK6RgIZOWzxZqfny+LSe5/9qRA8YAC88iA0QWNtM:mm/8xNqPIDnITSe5/9jSC8A0LE
TLSH T19ED4237A42D8A095C1BB25B3C983A0F14DE0DDFCD444D38AC521F22ED0BA9BD7D7A099
TrID 33.6% (.EXE) OS/2 Executable (generic) (2029/13)
33.1% (.EXE) Generic Win/DOS Executable (2002/3)
33.1% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter TheRavenFile
Tags:exe Expiro lockbit lockbit4 lockbit4.0 Ransomware


Avatar
RakeshKrish12
Source: https://github.com/TheRavenFile/Daily-Hunt/blob/main/LockBit%204.0%20Ransomware

Intelligence

File Origin
# of uploads :
2
# of downloads :
713
Origin country :
IN IN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
Verdict:
Malicious activity
Analysis date:
2025-02-14 08:37:05 UTC
Tags:
sinkhole m0yv ransomware stealer
Link:
https://app.any.run/tasks/e39e2296-19e9-4782-8630-3356bb2cd642

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.Expiro-3.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67af00b728ab76d43a5ae40b
Tags:
ransomware expiro crypt blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Modifying an executable file
Launching a service
Searching for synchronization primitives
Creating a file in the Windows subdirectories
Modifying a system executable file
Launching a process
Loading a system driver
Connection attempt to an infection source
Creating a file
Changing a file
Creating a file in the Program Files directory
Creating a file in the Program Files subdirectories
Connection attempt
Moving a file to the Program Files directory
Moving a file to the Program Files subdirectory
Modifies multiple files
Using the Windows Management Instrumentation requests
Creating a window
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Modifying a system file
Replacing files
Replacing executable files
Enabling autorun for a service
Query of malicious DNS domain
Moving of the original file
Creating a file in the mass storage device
Infecting executable files
Sending an HTTP POST request to an infection source
Encrypting user's files
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packed packer_detected upx
Link:
https://www.filescan.io/uploads/67af00b5991985e0a958d00d/reports/b1ef0942-0c2c-4324-81e4-9bf59da1dcb0/overview
Verdict:
Malicious
Labled as:
Win64.Expiro.Generic
Link:
https://www.hybrid-analysis.com/sample/43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/17bec178-f8e5-4ebc-bb49-3019fe2378b7
Result
Threat name:
LockBit ransomware
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1614919
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Connects to many different private IPs (likely to spread or exploit)
Connects to many different private IPs via SMB (likely to spread or exploit)
Contains functionality to behave differently if execute on a Russian/Kazak computer
Creates / moves files in alternative data streams (ADS)
Creates files inside the volume driver (system volume information)
Deletes itself after installation
Drops executable to a common third party application directory
Found direct / indirect Syscall (likely to bypass EDR)
Found ransom note / readme
Found Tor onion address
Infects executable files (exe, dll, sys, html)
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Queries random domain names (often used to prevent blacklisting and sinkholes)
Suricata IDS alerts for network traffic
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected LockBit ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1614919 Sample: 1D3g4ufG04.exe Startdate: 14/02/2025 Architecture: WINDOWS Score: 100 27 zlenh.biz 2->27 29 yunalwv.biz 2->29 31 32 other IPs or domains 2->31 41 Suricata IDS alerts for network traffic 2->41 43 Antivirus detection for URL or domain 2->43 45 Antivirus detection for dropped file 2->45 47 8 other signatures 2->47 6 1D3g4ufG04.exe 1001 2->6         started        11 armsvc.exe 1 2->11         started        13 AppVClient.exe 2->13         started        15 19 other processes 2->15 signatures3 process4 dnsIp5 33 192.168.2.100 unknown unknown 6->33 35 192.168.2.101 unknown unknown 6->35 39 97 other IPs or domains 6->39 17 C:\Windows\System32\msdtc.exe, PE32+ 6->17 dropped 19 C:\Windows\System32\alg.exe, PE32+ 6->19 dropped 21 C:\Windows\System32\AppVClient.exe, PE32+ 6->21 dropped 25 209 other malicious files 6->25 dropped 49 Connects to many different private IPs via SMB (likely to spread or exploit) 6->49 51 Connects to many different private IPs (likely to spread or exploit) 6->51 53 Creates / moves files in alternative data streams (ADS) 6->53 61 5 other signatures 6->61 37 przvgke.biz 72.52.178.23, 49996, 50000, 50166 LIQUIDWEBUS United States 11->37 23 C:\Windows\System32\sppsvc.exe, PE32+ 11->23 dropped 55 Infects executable files (exe, dll, sys, html) 11->55 57 Contains functionality to behave differently if execute on a Russian/Kazak computer 13->57 59 Creates files inside the volume driver (system volume information) 15->59 file6 signatures7
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5/
Threat name:
Win64.Virus.Expiro
Create hunting rule
Status:
Malicious
First seen:
2025-02-03 23:01:35 UTC
File Type:
PE+ (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=io3ze647qzu3z3shc6tjal2aj23pn3afus7c2wjusqaovk7qdlkq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
credential_access discovery spyware stealer upx
Link:
https://tria.ge/reports/250214-kh7wmaypak/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
UPX packed file
Enumerates connected drives
Credentials from Password Stores: Windows Credential Manager
Deletes itself
Drops startup file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Verdict:
Malicious
Tags:
trojan expiro
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/d5247d5b-8870-42de-bcd4-73e2fb944f21
Unpacked files
SH256 hash:
43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5
MD5 hash:
f828044c91ac00afffcd77b4ce680857
SHA1 hash:
cab15bcdc4d2778896fb9c1e127a8140ae1bba23
Link:
https://www.unpac.me/results/f3643746-2947-4dc0-8a6d-a0d60edcbbc1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/43b7927b9f86/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/43b7927b9f8669bcee4717a6902f404eb6f6ec05a4be2d59349400eaabf01ad5

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:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
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: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.

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 (GUARD_CF)high
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN_BASE_APIUses Win Base APIKERNEL32.DLL::LoadLibraryA

Comments