| File name: | Ryuk |
| Full analysis: | https://app.any.run/tasks/8e82fd27-fba8-48f8-8521-cc27faf75124 |
| Verdict: | Malicious activity |
| Threats: | Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. |
| Analysis date: | November 27, 2019, 15:22:11 |
| 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: | 5AC0F050F93F86E69026FAEA1FBB4450 |
| SHA1: | 9709774FDE9EC740AD6FED8ED79903296CA9D571 |
| SHA256: | 23F8AA94FFB3C08A62735FE7FEE5799880A8F322CE1D55EC49A13A3F85312DB2 |
| SSDEEP: | 6144:f5yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQC:fTX6WSofcZ+KCIGD |
MALICIOUS
Application was dropped or rewritten from another process
- xPUNm.exe (PID: 784)
Application was injected by another process
- taskeng.exe (PID: 2032)
- dwm.exe (PID: 280)
- ctfmon.exe (PID: 708)
- windanr.exe (PID: 3856)
Runs injected code in another process
- xPUNm.exe (PID: 784)
Changes the autorun value in the registry
- reg.exe (PID: 640)
Writes file to Word startup folder
- taskeng.exe (PID: 2032)
Deletes shadow copies
- cmd.exe (PID: 3544)
Actions looks like stealing of personal data
- taskeng.exe (PID: 2032)
SUSPICIOUS
Executable content was dropped or overwritten
- Ryuk.exe (PID: 2412)
Starts CMD.EXE for commands execution
- xPUNm.exe (PID: 784)
- taskeng.exe (PID: 2032)
Uses REG.EXE to modify Windows registry
- cmd.exe (PID: 3904)
Creates files in the program directory
- taskeng.exe (PID: 2032)
Creates files like Ransomware instruction
- taskeng.exe (PID: 2032)
Executed as Windows Service
- vssvc.exe (PID: 171628)
Creates files in the user directory
- taskeng.exe (PID: 2032)
INFO
Dropped object may contain Bitcoin addresses
- taskeng.exe (PID: 2032)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (42.2) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (37.3) |
| .dll | | | Win32 Dynamic Link Library (generic) (8.8) |
| .exe | | | Win32 Executable (generic) (6) |
| .exe | | | Generic Win/DOS Executable (2.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2018:08:18 01:31:55+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 14 |
| CodeSize: | 44544 |
| InitializedDataSize: | 350208 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x173b |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 17-Aug-2018 23:31:55 |
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: | 0x000000F8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 17-Aug-2018 23:31:55 |
| 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 | 0x0000ACC7 | 0x0000AE00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.61442 |
.rdata | 0x0000C000 | 0x0000594A | 0x00005A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.89076 |
.data | 0x00012000 | 0x0004EBDC | 0x0004E200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 6.2022 |
.gfids | 0x00061000 | 0x000000B4 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 1.46064 |
.reloc | 0x00062000 | 0x00000E14 | 0x00001000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.16056 |
Imports
ADVAPI32.dll |
KERNEL32.dll |
SHELL32.dll |
Total processes
62
Monitored processes
24
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 280 | "C:\Windows\system32\Dwm.exe" | C:\Windows\System32\dwm.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Desktop Window Manager Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 640 | REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\xPUNm.exe" /f | C:\Windows\system32\reg.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 708 | C:\Windows\System32\ctfmon.exe | C:\Windows\System32\ctfmon.exe | taskeng.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: CTF Loader Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 784 | "C:\users\Public\xPUNm.exe" C:\Users\admin\AppData\Local\Temp\Ryuk.exe | C:\users\Public\xPUNm.exe | — | Ryuk.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2032 | taskeng.exe {532150F8-214C-4D30-9483-0A3BC3E44D0E} | C:\Windows\System32\taskeng.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Engine Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2412 | "C:\Users\admin\AppData\Local\Temp\Ryuk.exe" | C:\Users\admin\AppData\Local\Temp\Ryuk.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3172 | vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB | C:\Windows\system32\vssadmin.exe | — | cmd.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
| |||||||||||||||
| 3188 | vssadmin Delete Shadows /all /quiet | C:\Windows\system32\vssadmin.exe | — | cmd.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
| |||||||||||||||
| 3544 | "C:\Windows\System32\cmd.exe" /C "C:\users\Public\window.bat" | C:\Windows\System32\cmd.exe | taskeng.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 3856 | "windanr.exe" | C:\Windows\system32\windanr.exe | qemu-ga.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
Total events
123
Read events
110
Write events
13
Delete events
0
Modification events
| (PID) Process: | (2412) Ryuk.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2412) Ryuk.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (784) xPUNm.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (784) xPUNm.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (640) reg.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | svchos |
Value: C:\users\Public\xPUNm.exe | |||
| (PID) Process: | (2032) taskeng.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2032) taskeng.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
Executable files
1
Suspicious files
762
Text files
413
Unknown types
23
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2032 | taskeng.exe | C:\ProgramData\Adobe\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2412 | Ryuk.exe | C:\users\Public\xPUNm.exe | executable | |
MD5:6CDCB9F86972EFC4CFCE4B06B6BE053A | SHA256:5D92914ACDFB551C237866CC4CCE6C80AEEEB695E52BEECD2613694302C62271 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\ARM\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\ARM\{291AA914-A987-4CE9-BD63-AC0A92D435E5}\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\Users\Public\Favorites\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys\08e575673cce10c72090304839888e02_90059c37-1320-41a4-b58d-2b75a9850d2f | dbf | |
MD5:93A5AADEEC082FFC1BCA5AA27AF70F52 | SHA256:A1A21799E98F97F271657CE656076F33DCB020D9370F1F2671D783CAFD230294 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\Setup\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\ARM\Reader_15.007.20033\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-FFFF-7B44-AC0F074E4100}\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
| 2032 | taskeng.exe | C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-FFFF-7B44-AC0F074E4100}\Transforms\RyukReadMe.txt | text | |
MD5:CD99CBA6153CBC0B14B7A849E4D0180F | SHA256:74C43A177917B1D57EA2EAF6212CCF3B9012B4D68BC45284349443EED0BF5EE2 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
14
DNS requests
6
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.0.1.1:445 | — | — | — | unknown |
4 | System | 192.0.1.1:139 | — | — | — | unknown |
— | — | 192.0.1.1:137 | — | — | — | unknown |
4 | System | 192.0.100.2:445 | — | Automattic, Inc | US | unknown |
4 | System | 192.0.100.2:139 | — | Automattic, Inc | US | unknown |
— | — | 192.0.100.2:137 | — | Automattic, Inc | US | unknown |
4 | System | 192.0.100.0:445 | — | Automattic, Inc | US | unknown |
4 | System | 192.0.100.0:139 | — | Automattic, Inc | US | unknown |
— | — | 192.0.100.0:137 | — | Automattic, Inc | US | unknown |
— | — | 192.0.1.1:445 | — | — | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
dns.msftncsi.com |
| shared |