| download: | Ransomware.Cryptowall.zip |
| Full analysis: | https://app.any.run/tasks/03deffcd-09cf-47df-9025-de6aaa79ca85 |
| 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: | January 24, 2022, 16:58:49 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v2.0 to extract |
| MD5: | 8710EA46C2DB18965A3F13C5FB7C5BE8 |
| SHA1: | 24978C79B5B4B3796ADCEFFE06A3A39B33DDA41D |
| SHA256: | 60D574055AE164CC32DF9E5C9402DEEFA9D07E5034328D7B41457D35B7312A0E |
| SSDEEP: | 3072:OCDc19avf1fHqOhdzVD/9Ae7RT5f6IiL+WfXS21o4D:OCD0QvlqGRlAlX+sXjo4D |
MALICIOUS
Application was dropped or rewritten from another process
- cryptowall.exe (PID: 2112)
- cryptowall.exe (PID: 3896)
Changes the autorun value in the registry
- explorer.exe (PID: 1384)
Drops executable file immediately after starts
- explorer.exe (PID: 1384)
Writes to a start menu file
- explorer.exe (PID: 1384)
Uses SVCHOST.EXE for hidden code execution
- explorer.exe (PID: 1384)
Deletes shadow copies
- explorer.exe (PID: 1384)
Starts BCDEDIT.EXE to disable recovery
- explorer.exe (PID: 1384)
CRYPTOWALL was detected
- svchost.exe (PID: 2220)
Connects to CnC server
- svchost.exe (PID: 2220)
SUSPICIOUS
Checks supported languages
- cryptowall.exe (PID: 2112)
- WinRAR.exe (PID: 3720)
- cryptowall.exe (PID: 3896)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 3720)
- explorer.exe (PID: 1384)
Application launched itself
- cryptowall.exe (PID: 3896)
Reads the computer name
- WinRAR.exe (PID: 3720)
Creates files in the user directory
- explorer.exe (PID: 1384)
Checks for external IP
- svchost.exe (PID: 2220)
INFO
Manual execution by user
- cryptowall.exe (PID: 3896)
Checks supported languages
- explorer.exe (PID: 1384)
- svchost.exe (PID: 2220)
- vssadmin.exe (PID: 3684)
- bcdedit.exe (PID: 3500)
- bcdedit.exe (PID: 3800)
Reads the computer name
- explorer.exe (PID: 1384)
- svchost.exe (PID: 2220)
- vssadmin.exe (PID: 3684)
Reads settings of System Certificates
- svchost.exe (PID: 2220)
Checks Windows Trust Settings
- svchost.exe (PID: 2220)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .zip | | | ZIP compressed archive (100) |
|---|
EXIF
ZIP
| ZipFileName: | cryptowall.bin |
|---|---|
| ZipUncompressedSize: | 246272 |
| ZipCompressedSize: | 102838 |
| ZipCRC: | 0x6baaab1e |
| ZipModifyDate: | 2015:02:09 22:05:26 |
| ZipCompression: | Deflated |
| ZipBitFlag: | 0x0009 |
| ZipRequiredVersion: | 20 |
Total processes
48
Monitored processes
8
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1384 | "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
| |||||||||||||||
| 2112 | "C:\Users\admin\Desktop\cryptowall.exe" | C:\Users\admin\Desktop\cryptowall.exe | — | cryptowall.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2220 | -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
| |||||||||||||||
| 3500 | 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
| |||||||||||||||
| 3684 | 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
| |||||||||||||||
| 3720 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\Desktop\Ransomware.Cryptowall.zip" | C:\Program Files\WinRAR\WinRAR.exe | Explorer.EXE | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Exit code: 0 Version: 5.91.0 Modules
| |||||||||||||||
| 3800 | 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
| |||||||||||||||
| 3896 | "C:\Users\admin\Desktop\cryptowall.exe" | C:\Users\admin\Desktop\cryptowall.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
Total events
5 721
Read events
5 660
Write events
61
Delete events
0
Modification events
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\virtio_ivshmem_master_build.zip | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\Win7-KB3191566-x86.zip | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\Desktop\Ransomware.Cryptowall.zip | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (3720) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
Executable files
4
Suspicious files
5
Text files
0
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA | der | |
MD5:— | SHA256:— | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_45E3C223BCF135987E4038FB6B0DBA13 | binary | |
MD5:— | SHA256:— | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_45E3C223BCF135987E4038FB6B0DBA13 | der | |
MD5:— | SHA256:— | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\19CB7CB85F3C1BAA0B50740305CB83A0_E82339634BA2CD03EAD3AF4785D65A60 | der | |
MD5:— | SHA256:— | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 | binary | |
MD5:— | SHA256:— | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA | binary | |
MD5:— | SHA256:— | |||
| 1384 | explorer.exe | C:\46695237\46695237.exe | executable | |
MD5:47363B94CEE907E2B8926C1BE61150C7 | SHA256:45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D | |||
| 1384 | explorer.exe | C:\Users\admin\AppData\Roaming\46695237.exe | executable | |
MD5:47363B94CEE907E2B8926C1BE61150C7 | SHA256:45317968759D3E37282CEB75149F627D648534C5B4685F6DA3966D8F6FCA662D | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 | compressed | |
MD5:F7DCB24540769805E5BB30D193944DCE | SHA256:6B88C6AC55BBD6FEA0EBE5A760D1AD2CFCE251C59D0151A1400701CB927E36EA | |||
| 2220 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\19CB7CB85F3C1BAA0B50740305CB83A0_E82339634BA2CD03EAD3AF4785D65A60 | binary | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
20
TCP/UDP connections
26
DNS requests
6
Threats
29
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2220 | svchost.exe | GET | — | 184.106.112.172:80 | http://curlmyip.com/ | US | — | — | malicious |
2220 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy1-1-1.i2p/sb8unrxt7yyu0 | ES | — | — | malicious |
2220 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy2-2-2.i2p/sb8unrxt7yyu0 | ES | — | — | malicious |
2220 | svchost.exe | GET | 200 | 142.250.186.131:80 | http://ocsp.pki.goog/gsr1/MFEwTzBNMEswSTAJBgUrDgMCGgUABBS3V7W2nAf4FiMTjpDJKg6%2BMgGqMQQUYHtmGkUNl8qJUC99BM00qP%2F8%2FUsCEHe9DWzbNvka6iEPxPBY0w0%3D | US | der | 1.41 Kb | whitelisted |
2220 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy2-2-2.i2p/8pa639492ew0 | ES | — | — | malicious |
2220 | svchost.exe | GET | 308 | 188.165.164.184:80 | http://ip-addr.es/ | FR | html | 164 b | shared |
2220 | svchost.exe | POST | — | 94.247.31.19:8080 | http://proxy1-1-1.i2p/n4rlned77xg | ES | — | — | malicious |
2220 | svchost.exe | GET | 308 | 188.165.164.184:80 | http://ip-addr.es/ | FR | html | 164 b | shared |
2220 | svchost.exe | GET | 302 | 34.117.59.81:80 | http://myexternalip.com/raw | US | text | 50 b | shared |
2220 | svchost.exe | GET | 302 | 34.117.59.81:80 | http://myexternalip.com/raw | US | text | 50 b | shared |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2220 | svchost.exe | 188.165.164.184:80 | ip-addr.es | OVH SAS | FR | suspicious |
2220 | svchost.exe | 23.32.238.208:80 | ctldl.windowsupdate.com | XO Communications | US | unknown |
2220 | svchost.exe | 34.117.59.81:443 | myexternalip.com | — | US | whitelisted |
2220 | svchost.exe | 142.250.186.131:80 | ocsp.pki.goog | Google Inc. | US | whitelisted |
2220 | svchost.exe | 94.247.28.156:8081 | — | ELB Multimedia SARL | FR | suspicious |
— | — | 94.247.28.26:2525 | — | ELB Multimedia SARL | FR | unknown |
2220 | svchost.exe | 94.247.31.19:8080 | — | ELB Multimedia SARL | ES | malicious |
2220 | svchost.exe | 184.106.112.172:80 | curlmyip.com | Rackspace Ltd. | US | suspicious |
2220 | svchost.exe | 34.117.59.81:80 | myexternalip.com | — | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
ip-addr.es |
| shared |
myexternalip.com |
| shared |
ctldl.windowsupdate.com |
| whitelisted |
ocsp.pki.goog |
| whitelisted |
dns.msftncsi.com |
| shared |
curlmyip.com |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2220 | svchost.exe | A Network Trojan was detected | ET POLICY Possible IP Check ip-addr.es |
2220 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY External IP Check myexternalip.com |
2220 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY IP Check Domain (myexternalip .com in TLS SNI) |
2220 | svchost.exe | A Network Trojan was detected | ET TROJAN CryptoWall Check-in |
2220 | svchost.exe | A Network Trojan was detected | ET TROJAN CryptoWall CryptoWall 3.0 Check-in |
2220 | svchost.exe | A Network Trojan was detected | ET TROJAN CryptoWall Check-in |
2220 | svchost.exe | A Network Trojan was detected | ET TROJAN CryptoWall CryptoWall 3.0 Check-in |
2220 | svchost.exe | A Network Trojan was detected | ET POLICY Possible IP Check ip-addr.es |
2220 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY External IP Check myexternalip.com |
2220 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY IP Check Domain (myexternalip .com in TLS SNI) |
4 ETPRO signatures available at the full report