| File name: | cutwail-a.exe |
| Full analysis: | https://app.any.run/tasks/5dbb3398-e356-4c2c-885d-c785feed317c |
| Verdict: | Malicious activity |
| Analysis date: | March 12, 2020, 14:57:13 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 17F2C1B2CD6E2EC32B714EC30186B3D0 |
| SHA1: | 0EF64E22895B29A56BD02A361C5A743DF0C09593 |
| SHA256: | A724C30306653E6BD369A48A159A6276F1BA6F2925E298E741E254739CA71BB9 |
| SSDEEP: | 3072:yXd8GjkAPf9XgxS1vucSfbG2K3/VteR2Pff:yNzIQf9XgQ1mcSzG2K3/wCf |
MALICIOUS
Changes the autorun value in the registry
- cutwail-a.exe (PID: 3052)
SUSPICIOUS
Connects to SMTP port
- cutwail-a.exe (PID: 3052)
INFO
No info indicators.
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) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2015:04:16 10:58:43+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 91648 |
| InitializedDataSize: | 22247936 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x3509 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 16-Apr-2015 08:58:43 |
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: | 0x000000D8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 2 |
| Time date stamp: | 16-Apr-2015 08:58:43 |
| 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 | 0x00016536 | 0x00016600 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.74512 |
.data | 0x00018000 | 0x01537898 | 0x00003600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 6.94411 |
Imports
ADVAPI32.dll |
DNSAPI.dll |
GDI32.dll |
KERNEL32.dll |
SHELL32.dll |
SHLWAPI.dll |
USER32.dll |
WININET.dll |
WS2_32.dll |
gdiplus.dll |
Total processes
34
Monitored processes
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3052 | "C:\Users\admin\AppData\Local\Temp\cutwail-a.exe" | C:\Users\admin\AppData\Local\Temp\cutwail-a.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
Total events
731
Read events
3
Write events
728
Delete events
0
Modification events
| (PID) Process: | (3052) cutwail-a.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft |
| Operation: | write | Name: | OSVersion |
Value: 10906250 | |||
| (PID) Process: | (3052) cutwail-a.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Regedit32 |
Value: C:\Windows\system32\regedit.exe | |||
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
135
DNS requests
44
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 |
|---|---|---|---|---|---|---|
3052 | cutwail-a.exe | 94.100.180.31:25 | mxs.mail.ru | Limited liability company Mail.Ru | RU | unknown |
3052 | cutwail-a.exe | 74.125.28.26:25 | alt4.gmail-smtp-in.l.google.com | Google Inc. | US | unknown |
3052 | cutwail-a.exe | 64.233.167.26:25 | gmail-smtp-in.l.google.com | Google Inc. | US | whitelisted |
3052 | cutwail-a.exe | 66.111.4.70:25 | in1.smtp.messagingengine.com | The New York Internet Company | US | unknown |
3052 | cutwail-a.exe | 212.83.152.59:443 | — | Online S.a.s. | FR | unknown |
3052 | cutwail-a.exe | 202.12.27.33:53 | — | WIDE Project | JP | unknown |
3052 | cutwail-a.exe | 192.228.79.201:53 | — | B.Root-Server-OPS | US | unknown |
3052 | cutwail-a.exe | 192.203.230.10:53 | — | Packet Clearing House | US | suspicious |
3052 | cutwail-a.exe | 193.0.14.129:53 | — | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | NL | unknown |
3052 | cutwail-a.exe | 128.8.10.90:53 | — | University of Maryland | US | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
mxs.mail.ru |
| shared |
alt4.gmail-smtp-in.l.google.com |
| whitelisted |
gmail-smtp-in.l.google.com |
| whitelisted |
in1.smtp.messagingengine.com |
| malicious |
mail7.digitalwaves.co.nz |
| malicious |
dns.msftncsi.com |
| shared |
com |
| malicious |
org |
| unknown |
de |
| unknown |