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| File name: | download3.exe |
| Full analysis: | https://app.any.run/tasks/aff83a62-f5f9-4a8a-8417-2f965c484674 |
| 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: | December 06, 2018, 17:22:14 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | C845F4C9B03F44B77B3EA3283E24F53B |
| SHA1: | 63FA99C5290A5F1E26B96E3C0AC1A7BE13CE484F |
| SHA256: | 2F09683CF491AEDE0BE347047838A45A754AF2E78C03676B4404B69A3DEE31CF |
| SSDEEP: | 6144:La8kBlmLJMxi8F/YchEx3zYxnaDEV2RnW1TUMUHpeLU81Fu:+BlmGFYchhaEVEW1TMX8e |
MALICIOUS
REMCOS RAT was detected
- MSBuild.exe (PID: 3272)
SUSPICIOUS
Creates files in the user directory
- MSBuild.exe (PID: 3272)
Application launched itself
- MSBuild.exe (PID: 4088)
Connects to unusual port
- MSBuild.exe (PID: 3272)
INFO
No info indicators.
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.) (81) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (7.2) |
| .exe | | | Win32 Executable (generic) (4.9) |
| .exe | | | Win16/32 Executable Delphi generic (2.2) |
| .exe | | | Generic Win/DOS Executable (2.2) |
EXIF
EXE
| AssemblyVersion: | 1.1020.7550.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | Adobe Reader and Acrobat Manager |
| OriginalFileName: | RencosFud.exe |
| LegalTrademarks: | Adobe Reader and Acrobat Manager |
| LegalCopyright: | Copyright © 2018 Adobe Reader and Acrobat Manager |
| InternalName: | RencosFud.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | Adobe Reader and Acrobat Manager |
| CompanyName: | Adobe Reader and Acrobat Manager |
| Comments: | Adobe Reader and Acrobat Manager |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x4e3be |
| UninitializedDataSize: | - |
| InitializedDataSize: | 3072 |
| CodeSize: | 312320 |
| LinkerVersion: | 6 |
| PEType: | PE32 |
| TimeStamp: | 2018:12:05 18:57:29+01:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 05-Dec-2018 17:57:29 |
| Comments: | Adobe Reader and Acrobat Manager |
| CompanyName: | Adobe Reader and Acrobat Manager |
| FileDescription: | Adobe Reader and Acrobat Manager |
| FileVersion: | 1.0.0.0 |
| InternalName: | RencosFud.exe |
| LegalCopyright: | Copyright © 2018 Adobe Reader and Acrobat Manager |
| LegalTrademarks: | Adobe Reader and Acrobat Manager |
| OriginalFilename: | RencosFud.exe |
| ProductName: | Adobe Reader and Acrobat Manager |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.1020.7550.0 |
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: | 4 |
| Time date stamp: | 05-Dec-2018 17:57:29 |
| 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 | 0x0004C3C4 | 0x0004C400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.62915 |
.sdata | 0x00050000 | 0x000000B1 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.18734 |
.rsrc | 0x00052000 | 0x00000718 | 0x00000800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.7659 |
.reloc | 0x00054000 | 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 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
32
Monitored processes
3
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3084 | "C:\Users\admin\AppData\Roaming\download3.exe" | C:\Users\admin\AppData\Roaming\download3.exe | — | explorer.exe |
User: admin Company: Adobe Reader and Acrobat Manager Integrity Level: MEDIUM Description: Adobe Reader and Acrobat Manager Exit code: 0 Version: 1.0.0.0 | ||||
| 4088 | "\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe | — | download3.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: MSBuild.exe Exit code: 0 Version: 2.0.50727.5420 built by: Win7SP1 | ||||
| 3272 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe | MSBuild.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: MSBuild.exe Version: 2.0.50727.5420 built by: Win7SP1 | ||||
Total events
8
Read events
7
Write events
1
Delete events
0
Modification events
| (PID) Process: | (3272) MSBuild.exe | Key: | HKEY_CURRENT_USER\Software\remcos_mICROSOFTwINDOWSuPDAT |
| Operation: | write | Name: | EXEpath |
Value: ½‚Ø`‡ŠîŽEêtæãñ—Qõ4LPy,'D6¿==©ÛªO?1Òì{ª@á@ ç(6æÏ!Ä„µiÖ ô | |||
Executable files
0
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3272 | MSBuild.exe | C:\Users\admin\AppData\Roaming\remcos\logs.dat | text | |
MD5:0ABFE42E5D1C0B67C54F89FCD7F4C1C2 | SHA256:EB667DC41B9055C1F56C7C05FA665018160107BE50474CFDAEC0BB7882BF5E89 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
2
DNS requests
4
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 |
|---|---|---|---|---|---|---|
3272 | MSBuild.exe | 138.36.3.228:2404 | systen32.ddns.net | TEX NET SERVIÇOS DE COMUNICAÇÃO EM INFORMATICA LTD | BR | malicious |
3272 | MSBuild.exe | 152.247.194.97:2404 | office365update.duckdns.org | TELEFÔNICA BRASIL S.A | BR | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
systen32.ddns.net |
| malicious |
office365update.duckdns.org |
| malicious |
dns.msftncsi.com |
| shared |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to *.duckdns. Domain |