| File name: | cryptowall.exe |
| Full analysis: | https://app.any.run/tasks/71413efe-3215-4e30-a50f-91c74651d260 |
| Verdict: | Malicious activity |
| Threats: | CryptoWall is a notorious ransomware family that emerged in early 2014 and rapidly became one of the most destructive cyber threats of its time. This malware encrypts victims' files using strong AES encryption, demands ransom payments in Bitcoin, and has generated hundreds of millions of dollars for cybercriminals. |
| Analysis date: | April 01, 2023, 01:37:53 |
| 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: | 47363B94CEE907E2B8926C1BE61150C7 |
| SHA1: | CA963033B9A285B8CD0044DF38146A932C838071 |
| SHA256: | 45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D |
| SSDEEP: | 3072:xkeyloECBch6ZCGBGSmHJ0y5lj6jdojK7+MGOXpXx8z3Lp7Yoq:xGlnCIwMpj6ijKfxx8z3F0V |
MALICIOUS
Create files in the Startup directory
- explorer.exe (PID: 3196)
Deletes shadow copies
- explorer.exe (PID: 3196)
Connects to the CnC server
- svchost.exe (PID: 3128)
Using BCDEDIT.EXE to modify recovery options
- explorer.exe (PID: 3196)
CRYPTOWALL was detected
- svchost.exe (PID: 3128)
SUSPICIOUS
Application launched itself
- cryptowall.exe (PID: 2368)
Connects to unusual port
- svchost.exe (PID: 3128)
Executable content was dropped or overwritten
- explorer.exe (PID: 3196)
Checks for external IP
- svchost.exe (PID: 3128)
INFO
Checks supported languages
- cryptowall.exe (PID: 2368)
- cryptowall.exe (PID: 2444)
Reads the machine GUID from the registry
- cryptowall.exe (PID: 2444)
The process checks LSA protection
- svchost.exe (PID: 3128)
- vssadmin.exe (PID: 3228)
- cryptowall.exe (PID: 2444)
- explorer.exe (PID: 3196)
Creates files or folders in the user directory
- explorer.exe (PID: 3196)
Checks proxy server information
- svchost.exe (PID: 3128)
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
| Subsystem: | Windows GUI |
|---|---|
| SubsystemVersion: | 5 |
| ImageVersion: | - |
| OSVersion: | 5 |
| EntryPoint: | 0x3487 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 210432 |
| CodeSize: | 34816 |
| LinkerVersion: | 9 |
| PEType: | PE32 |
| ImageFileCharacteristics: | No relocs, Executable, 32-bit |
| TimeStamp: | 2015:01:13 08:25:45+00:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 13-Jan-2015 08:25:45 |
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: | 0x000000F0 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 4 |
| Time date stamp: | 13-Jan-2015 08:25:45 |
| 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 | 0x000086B7 | 0x00008800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.52148 |
.rdata | 0x0000A000 | 0x00002820 | 0x00002A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.41741 |
.data | 0x0000D000 | 0x033C2BE0 | 0x0001A200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.35016 |
.rsrc | 0x033D0000 | 0x0001687C | 0x00016A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 6.02005 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.91161 | 381 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
17 | 5.99946 | 91740 | Latin 1 / Western European | UNKNOWN | RT_MESSAGETABLE |
Imports
ADVAPI32.dll |
COMCTL32.dll |
COMDLG32.dll |
KERNEL32.dll |
USER32.dll |
dbghelp.dll |
Total processes
44
Monitored processes
7
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2368 | "C:\Users\admin\AppData\Local\Temp\cryptowall.exe" | C:\Users\admin\AppData\Local\Temp\cryptowall.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2444 | "C:\Users\admin\AppData\Local\Temp\cryptowall.exe" | C:\Users\admin\AppData\Local\Temp\cryptowall.exe | — | cryptowall.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3128 | -k netsvcs | C:\Windows\System32\svchost.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Host Process for Windows Services Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3196 | "C:\Windows\explorer.exe" | C:\Windows\explorer.exe | cryptowall.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3228 | vssadmin.exe Delete Shadows /All /Quiet | C:\Windows\System32\vssadmin.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Command Line Interface for Microsoft® Volume Shadow Copy Service Exit code: 2 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3432 | bcdedit /set {default} recoveryenabled No | C:\Windows\System32\bcdedit.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Boot Configuration Data Editor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 3460 | bcdedit /set {default} bootstatuspolicy ignoreallfailures | C:\Windows\System32\bcdedit.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Boot Configuration Data Editor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
988
Read events
964
Write events
24
Delete events
0
Modification events
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections |
| Operation: | write | Name: | SavedLegacySettings |
Value: 460000003D010000090000000000000000000000000000000400000000000000C0E333BBEAB1D3010000000000000000000000000100000002000000C0A80164000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (3128) svchost.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
Executable files
6
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3196 | explorer.exe | C:\46695237\46695237.exe | executable | |
MD5:47363B94CEE907E2B8926C1BE61150C7 | SHA256:45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D | |||
| 3196 | explorer.exe | C:\Users\admin\AppData\Roaming\46695237.exe | executable | |
MD5:47363B94CEE907E2B8926C1BE61150C7 | SHA256:45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D | |||
| 3196 | explorer.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\46695237.exe | executable | |
MD5:47363B94CEE907E2B8926C1BE61150C7 | SHA256:45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
6
DNS requests
2
Threats
5
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3128 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy2-2-2.i2p/nkbtfabds6b | ES | — | — | malicious |
3128 | svchost.exe | GET | 308 | 188.165.164.184:80 | http://ip-addr.es/ | FR | html | 164 b | shared |
3128 | svchost.exe | GET | 200 | 34.160.111.145:80 | http://myexternalip.com/raw | US | text | 12 b | shared |
3128 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy1-1-1.i2p/nkbtfabds6b | ES | — | — | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
3128 | svchost.exe | 188.165.164.184:80 | ip-addr.es | OVH SAS | FR | suspicious |
— | — | 94.247.31.19:8080 | — | CTS Computers and Telecommunications Systems SAS | ES | malicious |
3128 | svchost.exe | 94.247.31.19:8080 | — | CTS Computers and Telecommunications Systems SAS | ES | malicious |
3128 | svchost.exe | 94.247.28.26:2525 | — | CTS Computers and Telecommunications Systems SAS | FR | unknown |
3128 | svchost.exe | 34.160.111.145:80 | myexternalip.com | GOOGLE | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
ip-addr.es |
| shared |
myexternalip.com |
| shared |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3128 | svchost.exe | A Network Trojan was detected | ET POLICY Possible IP Check ip-addr.es |
3128 | svchost.exe | Device Retrieving External IP Address Detected | ET POLICY External IP Check myexternalip.com |
3128 | svchost.exe | A Network Trojan was detected | ET MALWARE CryptoWall Check-in |
3128 | svchost.exe | A Network Trojan was detected | ET MALWARE CryptoWall CryptoWall 3.0 Check-in |
1 ETPRO signatures available at the full report