| File name: | JokerRansom.exe |
| Full analysis: | https://app.any.run/tasks/db6bcd73-961a-43bf-8ee1-7fb638b157b5 |
| 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: | July 31, 2022, 08:46:58 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 3BA978766AA2548C763E33EFB77CE263 |
| SHA1: | 41859B97093AB52D264233C0F01E857054B0AEA5 |
| SHA256: | 79EE8D39960B8BEF040FA2311F0F57B33040C429C4B79AE643DF07CD44726E1A |
| SSDEEP: | 24576:i9BrMRmJkcoQricOIQxiZY1iaDkfGrMZbMwx3YVbedXwhPbnzdcMpd:itJZoQrbTFZY1iaDkfGrMNYBedcTzd5 |
MALICIOUS
Task Manager has been disabled (taskmgr)
- JokerRansom.exe (PID: 3968)
Drops executable file immediately after starts
- JokerRansom.exe (PID: 3968)
Disables the Run in Start menu
- JokerRansom.exe (PID: 3968)
Changes the autorun value in the registry
- MBR.exe (PID: 1208)
Application was dropped or rewritten from another process
- MBR.exe (PID: 1208)
- lockr.exe (PID: 880)
SUSPICIOUS
Drops a file with a compile date too recent
- JokerRansom.exe (PID: 3968)
Checks supported languages
- JokerRansom.exe (PID: 3968)
- MBR.exe (PID: 1208)
- lockr.exe (PID: 880)
Reads the computer name
- JokerRansom.exe (PID: 3968)
- lockr.exe (PID: 880)
Executable content was dropped or overwritten
- JokerRansom.exe (PID: 3968)
Reads mouse settings
- lockr.exe (PID: 880)
Writes to a desktop.ini file (may be used to cloak folders)
- lockr.exe (PID: 880)
Changes the desktop background image
- lockr.exe (PID: 880)
Creates files like Ransomware instruction
- JokerRansom.exe (PID: 3968)
INFO
Checks supported languages
- schtasks.exe (PID: 4040)
- notepad.exe (PID: 3516)
- shutdown.exe (PID: 3624)
- NOTEPAD.EXE (PID: 2792)
- WINWORD.EXE (PID: 2496)
Reads the computer name
- schtasks.exe (PID: 4040)
- shutdown.exe (PID: 3624)
- WINWORD.EXE (PID: 2496)
Manual execution by user
- WINWORD.EXE (PID: 2496)
- NOTEPAD.EXE (PID: 2792)
Reads Microsoft Office registry keys
- WINWORD.EXE (PID: 2496)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| AssemblyVersion: | 1.0.0.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | JokerRansom |
| OriginalFileName: | JokerRansom.exe |
| LegalTrademarks: | - |
| LegalCopyright: | Copyright © 2022 |
| InternalName: | JokerRansom.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | JokerRansom |
| CompanyName: | - |
| Comments: | - |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 6 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x149cd6 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 5120 |
| CodeSize: | 1342976 |
| LinkerVersion: | 80 |
| PEType: | PE32 |
| TimeStamp: | 2060:08:21 18:06:53+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 16-Jul-1924 09:38:37 |
| Debug artifacts: |
|
| Comments: | - |
| CompanyName: | - |
| FileDescription: | JokerRansom |
| FileVersion: | 1.0.0.0 |
| InternalName: | JokerRansom.exe |
| LegalCopyright: | Copyright © 2022 |
| LegalTrademarks: | - |
| OriginalFilename: | JokerRansom.exe |
| ProductName: | JokerRansom |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
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: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 16-Jul-1924 09:38:37 |
| 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 | 0x00002000 | 0x00147CDC | 0x00147E00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.38959 |
.rsrc | 0x0014A000 | 0x00001124 | 0x00001200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.95997 |
.reloc | 0x0014C000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.01752 | 3411 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
51
Monitored processes
9
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 880 | "C:\Users\admin\AppData\Local\Temp\lockr.exe" | C:\Users\admin\AppData\Local\Temp\lockr.exe | — | JokerRansom.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 3, 3, 8, 1 Modules
| |||||||||||||||
| 1208 | "C:\Users\admin\AppData\Local\Temp\MBR.exe" | C:\Users\admin\AppData\Local\Temp\MBR.exe | JokerRansom.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 2496 | "C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\Lock.usingwest.rtf" | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | — | Explorer.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Word Exit code: 0 Version: 14.0.6024.1000 Modules
| |||||||||||||||
| 2792 | "C:\Windows\system32\NOTEPAD.EXE" C:\Users\admin\Desktop\Lock.desktop.ini | C:\Windows\system32\NOTEPAD.EXE | — | Explorer.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Notepad Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2952 | "C:\Users\admin\Desktop\JokerRansom.exe" | C:\Users\admin\Desktop\JokerRansom.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Description: JokerRansom Exit code: 3221226540 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3516 | notepad.exe c:\JokerRansomReadme.txt | C:\Windows\system32\notepad.exe | — | JokerRansom.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Notepad Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3624 | shutdown.exe /r /t 3600 /c "you have only a hour to pay Or your PC won't boot again" | C:\Windows\system32\shutdown.exe | — | JokerRansom.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Shutdown and Annotation Tool Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3968 | "C:\Users\admin\Desktop\JokerRansom.exe" | C:\Users\admin\Desktop\JokerRansom.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: HIGH Description: JokerRansom Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 4040 | schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\admin\AppData\Local\Temp\MBR.exe" | C:\Windows\system32\schtasks.exe | — | MBR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
3 401
Read events
2 962
Write events
185
Delete events
254
Modification events
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | DisableTaskMgr |
Value: 1 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer |
| Operation: | write | Name: | NoRun |
Value: 1 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | DisableCMD |
Value: 0 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3968) JokerRansom.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (1208) MBR.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Windows Update |
Value: C:\Users\admin\AppData\Local\Temp\MBR.exe | |||
| (PID) Process: | (1208) MBR.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | Windows Update |
Value: C:\Users\admin\AppData\Local\Temp\MBR.exe | |||
| (PID) Process: | (880) lockr.exe | Key: | HKEY_CURRENT_USER\Control Panel\Desktop |
| Operation: | write | Name: | Wallpaper |
Value: C:\Users\admin\AppData\Local\Temp\wl.jpg | |||
Executable files
2
Suspicious files
29
Text files
4
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 880 | lockr.exe | C:\Users\admin\AppData\Local\Lock.IconCache.db | — | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.builtsummer.rtf | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.ethese.rtf | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.areapeace.png | binary | |
MD5:— | SHA256:— | |||
| 3968 | JokerRansom.exe | C:\Users\admin\AppData\Local\Temp\lockr.exe | executable | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.lordrentals.rtf | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.eurshopping.rtf | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.fixedfeed.jpg | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.lastnet.rtf | binary | |
MD5:— | SHA256:— | |||
| 880 | lockr.exe | C:\Users\admin\Desktop\Lock.policiesv.png | binary | |
MD5:— | SHA256:— | |||
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