| File name: | Medusa.exe |
| Full analysis: | https://app.any.run/tasks/65d10891-f651-4f6d-9058-59eed24d5627 |
| Verdict: | Malicious activity |
| Threats: | Medusa is a ransomware malware family targeting businesses and institutions. Medusa encrypts crucial data, rendering it inaccessible, and attempts to pressure users to pay to regain control of their information. The group behind this malicious software hosts a TOR website where it shares the list of the organizations whose infrastructure has been compromised. This malware utilizes various tactics, including exploiting vulnerabilities and employs a unique file extension (".MEDUSA") to mark encrypted files. |
| Analysis date: | October 24, 2020, 19:08:33 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 19DDAC9782ACD73F66C5FE040E86DDEE |
| SHA1: | 24CEBA1E2951CDE8E41939DA21C6BA3030FC531D |
| SHA256: | DDE3C98B6A370FB8D1785F3134A76CB465CD663DB20DFFE011DA57A4DE37AA95 |
| SSDEEP: | 12288:vN3K5e8nbwFigzk6VVMqX8aQNRMcauV9B/rtiPnA40Q8:hCXbwFigzkQVdXvlcayDh49 |
MALICIOUS
Loads the Task Scheduler COM API
- Medusa.exe (PID: 2552)
Known privilege escalation attack
- DllHost.exe (PID: 3172)
UAC/LUA settings modification
- Medusa.exe (PID: 2552)
MEDUSA was detected
- Medusa.exe (PID: 2552)
Deletes shadow copies
- Medusa.exe (PID: 2552)
Starts BCDEDIT.EXE to disable recovery
- Medusa.exe (PID: 2552)
SUSPICIOUS
Executed via COM
- DllHost.exe (PID: 3172)
Executable content was dropped or overwritten
- Medusa.exe (PID: 2552)
Creates files in the user directory
- Medusa.exe (PID: 2552)
Executed as Windows Service
- vssvc.exe (PID: 2908)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2019:10:10 23:31:47+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 14.22 |
| CodeSize: | 461824 |
| InitializedDataSize: | 218624 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x385d1 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 10-Oct-2019 21:31:47 |
| Detected languages: |
|
| Debug artifacts: |
|
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000110 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 10-Oct-2019 21:31:47 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00001000 | 0x00070BB6 | 0x00070C00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.54875 |
.rdata | 0x00072000 | 0x0002ABAA | 0x0002AC00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.5768 |
.data | 0x0009D000 | 0x00004B68 | 0x00003A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.75335 |
.rsrc | 0x000A2000 | 0x000001E0 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.69492 |
.reloc | 0x000A3000 | 0x00005A08 | 0x00005C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.5581 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.91161 | 381 | UNKNOWN | English - United States | RT_MANIFEST |
Imports
ADVAPI32.dll |
CRYPT32.dll |
IPHLPAPI.DLL |
KERNEL32.dll |
MPR.dll |
NETAPI32.dll |
OLEAUT32.dll |
RstrtMgr.DLL |
SHELL32.dll |
WS2_32.dll |
Total processes
54
Monitored processes
10
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 464 | wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest | C:\Windows\system32\wbadmin.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Command Line Interface for Microsoft® BLB Backup Exit code: 4294967293 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 612 | bcdedit.exe /set {default} recoveryenabled No | C:\Windows\system32\bcdedit.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Boot Configuration Data Editor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 864 | wbadmin DELETE SYSTEMSTATEBACKUP | C:\Windows\system32\wbadmin.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Command Line Interface for Microsoft® BLB Backup Exit code: 4294967293 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1352 | bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures | C:\Windows\system32\bcdedit.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Boot Configuration Data Editor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 1860 | vssadmin.exe Delete Shadows /All /Quiet | C:\Windows\system32\vssadmin.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Command Line Interface for Microsoft® Volume Shadow Copy Service Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2516 | "C:\Users\admin\AppData\Local\Temp\Medusa.exe" | C:\Users\admin\AppData\Local\Temp\Medusa.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2552 | "C:\Users\admin\AppData\Local\Temp\Medusa.exe" | C:\Users\admin\AppData\Local\Temp\Medusa.exe | DllHost.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 2820 | wmic.exe SHADOWCOPY /nointeractive | C:\Windows\System32\Wbem\wmic.exe | — | Medusa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: WMI Commandline Utility Exit code: 44124 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2908 | C:\Windows\system32\vssvc.exe | C:\Windows\system32\vssvc.exe | — | services.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Microsoft® Volume Shadow Copy Service Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3172 | C:\Windows\system32\DllHost.exe /Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7} | C:\Windows\system32\DllHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: COM Surrogate Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
740
Read events
718
Write events
16
Delete events
6
Modification events
| (PID) Process: | (3172) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3172) DllHost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | EnableLUA |
Value: 0 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | ConsentPromptBehaviorAdmin |
Value: 0 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_CURRENT_USER\Software\Medusa |
| Operation: | write | Name: | Name |
Value: Medusa.exe | |||
| (PID) Process: | (612) bcdedit.exe | Key: | HKEY_LOCAL_MACHINE\BCD00000000\Objects\{345b46fd-a9f9-11e7-a83c-e8a4f72b1d33}\Elements\16000009 |
| Operation: | write | Name: | Element |
Value: 00 | |||
| (PID) Process: | (1352) bcdedit.exe | Key: | HKEY_LOCAL_MACHINE\BCD00000000\Objects\{345b46fd-a9f9-11e7-a83c-e8a4f72b1d33}\Elements\250000e0 |
| Operation: | write | Name: | Element |
Value: 0100000000000000 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | EnableLinkedConnections |
Value: 1 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000 |
| Operation: | write | Name: | Owner |
Value: F80900004A3CB11B39AAD601 | |||
| (PID) Process: | (2552) Medusa.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000 |
| Operation: | write | Name: | SessionHash |
Value: E6A789C003A09FF450618BE47C89A8094FBF49BD37F89B051FB895F95412DF7B | |||
Executable files
1
Suspicious files
1
Text files
1
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2552 | Medusa.exe | C:\autoexec.bat | — | |
MD5:— | SHA256:— | |||
| 2552 | Medusa.exe | C:\autoexec.bat.encrypted | binary | |
MD5:— | SHA256:— | |||
| 464 | wbadmin.exe | C:\Windows\Logs\WindowsBackup\Wbadmin.2.etl | etl | |
MD5:— | SHA256:— | |||
| 464 | wbadmin.exe | C:\Windows\Logs\WindowsBackup\Wbadmin.1.etl | etl | |
MD5:— | SHA256:— | |||
| 2552 | Medusa.exe | C:\HOW_TO_RECOVER_DATA.html | html | |
MD5:— | SHA256:— | |||
| 864 | wbadmin.exe | C:\Windows\Logs\WindowsBackup\Wbadmin.1.etl | etl | |
MD5:— | SHA256:— | |||
| 2552 | Medusa.exe | C:\Users\admin\AppData\Roaming\svchostt.exe | executable | |
MD5:19DDAC9782ACD73F66C5FE040E86DDEE | SHA256:DDE3C98B6A370FB8D1785F3134A76CB465CD663DB20DFFE011DA57A4DE37AA95 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report