| File name: | Chaos_Ransomware_Builder__v4.exe |
| Full analysis: | https://app.any.run/tasks/1f2f7de3-3a12-41ed-8eb6-4f26e2213bbf |
| Verdict: | Malicious activity |
| Analysis date: | November 28, 2021, 12:50:38 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 8B855E56E41A6E10D28522A20C1E0341 |
| SHA1: | 17EA75272CFE3749C6727388FD444D2C970F9D01 |
| SHA256: | F2665F89BA53ABD3DEB81988C0D5194992214053E77FC89B98B64A31A7504D77 |
| SSDEEP: | 3072:9UJAYdi2YcRVm16Pn6tpzqJG/sX9i2YcRPm16Pn6ckCjSH5EyR9aKZt18rTu+i2S:9aiWm162qJEsNiym16ryAiym168 |
MALICIOUS
Starts Visual C# compiler
- Chaos_Ransomware_Builder__v4.exe (PID: 2252)
Drops executable file immediately after starts
- csc.exe (PID: 3388)
- test.exe (PID: 2960)
Application was dropped or rewritten from another process
- test.exe (PID: 2960)
- svchost.exe (PID: 3020)
Writes to a start menu file
- svchost.exe (PID: 3020)
SUSPICIOUS
Checks supported languages
- cvtres.exe (PID: 2628)
- csc.exe (PID: 3388)
- Chaos_Ransomware_Builder__v4.exe (PID: 2252)
- test.exe (PID: 2960)
- svchost.exe (PID: 3020)
Executable content was dropped or overwritten
- csc.exe (PID: 3388)
- test.exe (PID: 2960)
Reads the computer name
- Chaos_Ransomware_Builder__v4.exe (PID: 2252)
- test.exe (PID: 2960)
- svchost.exe (PID: 3020)
Creates executable files which already exist in Windows
- test.exe (PID: 2960)
Drops a file with a compile date too recent
- csc.exe (PID: 3388)
- test.exe (PID: 2960)
Starts itself from another location
- test.exe (PID: 2960)
Creates files in the user directory
- test.exe (PID: 2960)
- svchost.exe (PID: 3020)
INFO
Manual execution by user
- test.exe (PID: 2960)
Checks supported languages
- NOTEPAD.EXE (PID: 3496)
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.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2021:08:04 09:08:22+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 11 |
| CodeSize: | 439808 |
| InitializedDataSize: | 123392 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x6d5ae |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 3.0.0.0 |
| ProductVersionNumber: | 3.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| FileDescription: | Chaos Ransomware v4 |
| FileVersion: | 3.0.0.0 |
| InternalName: | Chaos Ransomware Builder v4.exe |
| LegalCopyright: | Copyright © 2021 |
| OriginalFileName: | Chaos Ransomware Builder v4.exe |
| ProductName: | Chaos Ransomware Builder v4 |
| ProductVersion: | 3.0.0.0 |
| AssemblyVersion: | 3.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 04-Aug-2021 07:08:22 |
| Debug artifacts: |
|
| FileDescription: | Chaos Ransomware v4 |
| FileVersion: | 3.0.0.0 |
| InternalName: | Chaos Ransomware Builder v4.exe |
| LegalCopyright: | Copyright © 2021 |
| OriginalFilename: | Chaos Ransomware Builder v4.exe |
| ProductName: | Chaos Ransomware Builder v4 |
| ProductVersion: | 3.0.0.0 |
| Assembly Version: | 3.0.0.0 |
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: | 04-Aug-2021 07:08:22 |
| 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 | 0x0006B5B4 | 0x0006B600 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 4.75892 |
.rsrc | 0x0006E000 | 0x0001DF58 | 0x0001E000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.60752 |
.reloc | 0x0008C000 | 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 | 5.43134 | 3319 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 7.96514 | 18331 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 3.21367 | 67624 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 3.4715 | 16936 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 3.61336 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
6 | 3.89701 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
7 | 4.44409 | 1128 | UNKNOWN | UNKNOWN | RT_ICON |
32512 | 2.8494 | 90 | UNKNOWN | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
46
Monitored processes
7
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3516 | "C:\Users\admin\AppData\Local\Temp\Chaos_Ransomware_Builder__v4.exe" | C:\Users\admin\AppData\Local\Temp\Chaos_Ransomware_Builder__v4.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Description: Chaos Ransomware v4 Exit code: 3221226540 Version: 3.0.0.0 Modules
| |||||||||||||||
| 2252 | "C:\Users\admin\AppData\Local\Temp\Chaos_Ransomware_Builder__v4.exe" | C:\Users\admin\AppData\Local\Temp\Chaos_Ransomware_Builder__v4.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: HIGH Description: Chaos Ransomware v4 Exit code: 0 Version: 3.0.0.0 Modules
| |||||||||||||||
| 3388 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\5sbop5gf.cmdline" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe | Chaos_Ransomware_Builder__v4.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Visual C# Command Line Compiler Exit code: 0 Version: 4.0.30319.34209 built by: FX452RTMGDR Modules
| |||||||||||||||
| 2628 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RESA5B3.tmp" "c:\Users\admin\Desktop\CSC8AF74D077DAC4F9D94A25B398D4CE37.TMP" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe | — | csc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft� Resource File To COFF Object Conversion Utility Exit code: 0 Version: 12.00.51209.34209 built by: FX452RTMGDR Modules
| |||||||||||||||
| 2960 | "C:\Users\admin\Desktop\test.exe" | C:\Users\admin\Desktop\test.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Exit code: 1 Version: 0.0.0.0 Modules
| |||||||||||||||
| 3020 | "C:\Users\admin\AppData\Roaming\svchost.exe" | C:\Users\admin\AppData\Roaming\svchost.exe | test.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Version: 0.0.0.0 Modules
| |||||||||||||||
| 3496 | "C:\Windows\system32\NOTEPAD.EXE" C:\Users\admin\AppData\Roaming\read_it.txt | C:\Windows\system32\NOTEPAD.EXE | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Notepad Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
3 545
Read events
3 463
Write events
79
Delete events
3
Modification events
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\CIDSizeMRU |
| Operation: | write | Name: | 4 |
Value: 4300680061006F0073005F00520061006E0073006F006D0077006100720065005F004200750069006C006400650072005F005F00760034002E00650078006500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\BagMRU |
| Operation: | write | Name: | NodeSlots |
Value: 0202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202 | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\BagMRU |
| Operation: | write | Name: | MRUListEx |
Value: 02000000010000000D0000000C000000000000000B00000007000000060000000A0000000900000008000000030000000500000004000000FFFFFFFF | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\Bags\50\ComDlg |
| Operation: | write | Name: | TV_FolderType |
Value: {FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\Bags\50\ComDlg |
| Operation: | write | Name: | TV_TopViewID |
Value: {82BA0782-5B7A-4569-B5D7-EC83085F08CC} | |||
| (PID) Process: | (2252) Chaos_Ransomware_Builder__v4.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\Bags\50\ComDlg |
| Operation: | write | Name: | TV_TopViewVersion |
Value: 0 | |||
Executable files
2
Suspicious files
0
Text files
99
Unknown types
2
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2252 | Chaos_Ransomware_Builder__v4.exe | C:\Users\admin\AppData\Local\Temp\5sbop5gf.cmdline | text | |
MD5:7294EA0F777C67573170F6A3765AC294 | SHA256:5F58DCBE9D09802A3FD1C774E022F1F5E30D0357583D0F6A822C45B1717B1A5A | |||
| 2252 | Chaos_Ransomware_Builder__v4.exe | C:\Users\admin\AppData\Local\Temp\5sbop5gf.0.cs | text | |
MD5:76E03563EE3AB915BCE443D213332EE7 | SHA256:4C83FBA26F2AF551CA9044ACA13E24EE109228B0C06563EBE75E36A0D294C607 | |||
| 2960 | test.exe | C:\Users\admin\AppData\Roaming\svchost.exe | executable | |
MD5:4A9AAD59BB927472B0E4B54E9CFBC41C | SHA256:6D4775BDF7375A15B6F2DB532AD5712727D34AA8FB84C00F980B635AE3DC6BD1 | |||
| 2628 | cvtres.exe | C:\Users\admin\AppData\Local\Temp\RESA5B3.tmp | o | |
MD5:BB8A0584690A2ED5E1368C925D0F7943 | SHA256:27467B6B42A5C17FB9ECE9E6466A04147BC0704F17BC3680D7E06AA1BE31AAF3 | |||
| 3388 | csc.exe | C:\Users\admin\AppData\Local\Temp\5sbop5gf.out | text | |
MD5:A350D13B195F0BFD48C2BB5A48BC8132 | SHA256:3B63C570741C2385F17406365E8373F8E7818532361EBF3095B4F799B5E6B4B7 | |||
| 3388 | csc.exe | C:\Users\admin\Desktop\test.exe | executable | |
MD5:4A9AAD59BB927472B0E4B54E9CFBC41C | SHA256:6D4775BDF7375A15B6F2DB532AD5712727D34AA8FB84C00F980B635AE3DC6BD1 | |||
| 3020 | svchost.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url | text | |
MD5:83660DEB1A47E0B191FDA82BDFD61827 | SHA256:87089BD6FEDDA43B5E4D738B5BF246BA1B2E5C248B9220F0D1E742B827F30B0D | |||
| 3020 | svchost.exe | C:\Users\admin\Links\read_it.txt | text | |
MD5:4217B8B83CE3C3F70029A056546F8FD0 | SHA256:7D767E907BE373C680D1F7884D779588EB643BEBB3F27BF3B5ED4864AA4D8121 | |||
| 3020 | svchost.exe | C:\Users\admin\Desktop\read_it.txt | text | |
MD5:4217B8B83CE3C3F70029A056546F8FD0 | SHA256:7D767E907BE373C680D1F7884D779588EB643BEBB3F27BF3B5ED4864AA4D8121 | |||
| 3020 | svchost.exe | C:\Users\admin\Saved Games\read_it.txt | text | |
MD5:4217B8B83CE3C3F70029A056546F8FD0 | SHA256:7D767E907BE373C680D1F7884D779588EB643BEBB3F27BF3B5ED4864AA4D8121 | |||
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