| File name: | Backdoor.exe |
| Full analysis: | https://app.any.run/tasks/37999c1f-5580-4da4-94a3-6dce7067d1f1 |
| Verdict: | Malicious activity |
| Threats: | Remote access trojans (RATs) are a type of malware that enables attackers to establish complete to partial control over infected computers. Such malicious programs often have a modular design, offering a wide range of functionalities for conducting illicit activities on compromised systems. Some of the most common features of RATs include access to the users’ data, webcam, and keystrokes. This malware is often distributed through phishing emails and links. |
| Analysis date: | September 30, 2024, 19:30:24 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | MS-DOS executable PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, MZ for MS-DOS |
| MD5: | 719462CE5560C1CB249DEE9564A1F34C |
| SHA1: | B5A9519184036CDA5756518E64DECFAAD60A2441 |
| SHA256: | 4A3338704AD09413D9FD5B62CF4181D87A4707A018232F3F63AF922125BB262C |
| SSDEEP: | 768:hFa2klu2GgzTBedNcIiLe5cwfRC3yMaJU5tfj/AXGzk+LG:HXvCz1OcheVf7VUfkck+LG |
MALICIOUS
REMCOS has been detected
- Backdoor.exe (PID: 6412)
- remcos.exe (PID: 2468)
- remcos.exe (PID: 2468)
Changes the autorun value in the registry
- Backdoor.exe (PID: 6412)
- remcos.exe (PID: 2468)
REMCOS has been detected (SURICATA)
- remcos.exe (PID: 2468)
REMCOS has been detected (YARA)
- remcos.exe (PID: 2468)
Connects to the CnC server
- remcos.exe (PID: 2468)
SUSPICIOUS
Executable content was dropped or overwritten
- Backdoor.exe (PID: 6412)
Executing commands from a ".bat" file
- Backdoor.exe (PID: 6412)
Reads security settings of Internet Explorer
- Backdoor.exe (PID: 6412)
Starts CMD.EXE for commands execution
- Backdoor.exe (PID: 6412)
Runs PING.EXE to delay simulation
- cmd.exe (PID: 3188)
The executable file from the user directory is run by the CMD process
- remcos.exe (PID: 2468)
Contacting a server suspected of hosting an CnC
- remcos.exe (PID: 2468)
Connects to unusual port
- remcos.exe (PID: 2468)
INFO
Creates files or folders in the user directory
- Backdoor.exe (PID: 6412)
- remcos.exe (PID: 2468)
Checks supported languages
- Backdoor.exe (PID: 6412)
- remcos.exe (PID: 2468)
Reads the computer name
- Backdoor.exe (PID: 6412)
- remcos.exe (PID: 2468)
Create files in a temporary directory
- Backdoor.exe (PID: 6412)
Process checks computer location settings
- Backdoor.exe (PID: 6412)
The process uses the downloaded file
- Backdoor.exe (PID: 6412)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2017:01:05 19:50:13+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit, No debug |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 61440 |
| InitializedDataSize: | 28672 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x172ec |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Total processes
119
Monitored processes
5
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2468 | "C:\Users\admin\AppData\Roaming\remcos\remcos.exe" | C:\Users\admin\AppData\Roaming\remcos\remcos.exe | cmd.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
| |||||||||||||||
| 3188 | C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\install.bat" " | C:\Windows\SysWOW64\cmd.exe | — | Backdoor.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4236 | PING 127.0.0.1 -n 2 | C:\Windows\SysWOW64\PING.EXE | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: TCP/IP Ping Command Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4492 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6412 | "C:\Users\admin\Desktop\Backdoor.exe" | C:\Users\admin\Desktop\Backdoor.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
Total events
646
Read events
641
Write events
5
Delete events
0
Modification events
| (PID) Process: | (6412) Backdoor.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | remcos |
Value: "C:\Users\admin\AppData\Roaming\remcos\remcos.exe" | |||
| (PID) Process: | (6412) Backdoor.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | remcos |
Value: "C:\Users\admin\AppData\Roaming\remcos\remcos.exe" | |||
| (PID) Process: | (2468) remcos.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | remcos |
Value: "C:\Users\admin\AppData\Roaming\remcos\remcos.exe" | |||
| (PID) Process: | (2468) remcos.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | remcos |
Value: "C:\Users\admin\AppData\Roaming\remcos\remcos.exe" | |||
| (PID) Process: | (2468) remcos.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\remcos_bzblukwtnxokphw |
| Operation: | write | Name: | EXEpath |
Value: NšÅ8ç BWêÈïSµ^ÌyÇŽ·#?“Lù×òòâÈûäúÑlÝÝËS+¼Ý" | |||
Executable files
1
Suspicious files
0
Text files
5
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6412 | Backdoor.exe | C:\Users\admin\AppData\Local\Temp\install.bat | text | |
MD5:4BE8E47D35A08B8B6AD69312F7B4E077 | SHA256:428B8E9AF103691C24E02AA1F514D45763C29FD1F83EA77DAB7DEF653545FB60 | |||
| 6412 | Backdoor.exe | C:\Users\admin\AppData\Roaming\remcos\remcos.exe | executable | |
MD5:719462CE5560C1CB249DEE9564A1F34C | SHA256:4A3338704AD09413D9FD5B62CF4181D87A4707A018232F3F63AF922125BB262C | |||
| 2468 | remcos.exe | C:\Users\admin\AppData\Roaming\remcos\logs.dat | text | |
MD5:89B5667E995FBEB88EDDA0BAC2FD47C4 | SHA256:EE321AE724EA998CADB15526D3573191C892653D28A8AA7DE43413AE2DCE5E79 | |||
| 2468 | remcos.exe | C:\Users\admin\AppData\Roaming\Screens\1.png | image | |
MD5:1C3D24CFF8F3D5C28F8AC382DEEAFA6F | SHA256:7449AE72FE36850E504B062B40945CCB981D5E6C63A6E19C7F06AF0C3252C538 | |||
| 2468 | remcos.exe | C:\Users\admin\AppData\Roaming\Screens\2.png | image | |
MD5:456E6F9A9749FE2DBA47E084FEDFE4DA | SHA256:A4EDB132A7F3950CC5E327D3631A6827BE6696E1473118CF998FA0783445A9DB | |||
| 2468 | remcos.exe | C:\Users\admin\AppData\Roaming\Screens\0.png | image | |
MD5:F39566D90F6DCCADFBA9D961704FDE35 | SHA256:4993F7C2911425180CF39A377BCB3A27D56EA4A80342D63C7F6C73285C9E1A62 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
30
DNS requests
6
Threats
8
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3924 | svchost.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
3924 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
3888 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
2468 | remcos.exe | 74.215.232.65:2404 | — | FUSE-NET | US | malicious |
3924 | svchost.exe | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Malware Command and Control Activity Detected | ET MALWARE Remcos RAT Checkin 23 |
— | — | Malware Command and Control Activity Detected | ET MALWARE Remcos RAT Checkin 23 |
— | — | Malware Command and Control Activity Detected | ET MALWARE Remcos RAT Checkin 23 |
— | — | Malware Command and Control Activity Detected | ET MALWARE Remcos RAT Checkin 23 |
4 ETPRO signatures available at the full report