download: | ok.exe |
Full analysis: | https://app.any.run/tasks/0c94e04c-975d-4a67-be8d-dfd4b60ad86c |
Verdict: | Malicious activity |
Threats: | Orcus is a modular Remote Access Trojan with some unusual functions. This RAT enables attackers to create plugins using a custom development library and offers a robust core feature set that makes it one of the most dangerous malicious programs in its class. |
Analysis date: | March 14, 2019, 19:42:39 |
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: | E640C08F505C78B1887F5F4B091E1D64 |
SHA1: | 8C1EC3EAFF6E846CE85682B7134751207D41F73D |
SHA256: | 65F750AF58456CE7FF79936DBA02C53BB4802F0C9ACD81E7E37039A21ED06063 |
SSDEEP: | 24576:YYE5yoCBCi2GynuYTzbCsUfGTJyw+kMjNl4lVmxh15NfCLU3IHcu7dVosjOjQiTG:tIXCslCr4lV0CLHjxmzn |
.exe | | | Generic CIL Executable (.NET, Mono, etc.) (45.1) |
---|---|---|
.exe | | | Win32 Executable MS Visual C++ (generic) (19.2) |
.exe | | | Win64 Executable (generic) (17) |
.scr | | | Windows screen saver (8) |
.dll | | | Win32 Dynamic Link Library (generic) (4) |
AssemblyVersion: | 0.0.0.0 |
---|---|
ProductVersion: | 0.0.0.0 |
OriginalFileName: | ok.exe |
LegalCopyright: | |
InternalName: | ok.exe |
FileVersion: | 0.0.0.0 |
FileDescription: | |
CharacterSet: | Unicode |
LanguageCode: | Neutral |
FileSubtype: | - |
ObjectFileType: | Executable application |
FileOS: | Win32 |
FileFlags: | (none) |
FileFlagsMask: | 0x003f |
ProductVersionNumber: | 0.0.0.0 |
FileVersionNumber: | 0.0.0.0 |
Subsystem: | Windows GUI |
SubsystemVersion: | 4 |
ImageVersion: | - |
OSVersion: | 4 |
EntryPoint: | 0x1d3f6e |
UninitializedDataSize: | - |
InitializedDataSize: | 2560 |
CodeSize: | 1908736 |
LinkerVersion: | 6 |
PEType: | PE32 |
TimeStamp: | 2019:03:14 20:41:48+01:00 |
MachineType: | Intel 386 or later, and compatibles |
Architecture: | IMAGE_FILE_MACHINE_I386 |
---|---|
Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
Compilation Date: | 14-Mar-2019 19:41:48 |
FileDescription: | - |
FileVersion: | 0.0.0.0 |
InternalName: | ok.exe |
LegalCopyright: | - |
OriginalFilename: | ok.exe |
ProductVersion: | 0.0.0.0 |
Assembly Version: | 0.0.0.0 |
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 |
Signature: | PE |
---|---|
Machine: | IMAGE_FILE_MACHINE_I386 |
Number of sections: | 4 |
Time date stamp: | 14-Mar-2019 19:41:48 |
Pointer to Symbol Table: | 0x00000000 |
Number of symbols: | 0 |
Size of Optional Header: | 0x00E0 |
Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
---|---|---|---|---|---|
.text | 0x00002000 | 0x001D1F74 | 0x001D2000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.25895 |
.sdata | 0x001D4000 | 0x000000B1 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.17658 |
.rsrc | 0x001D6000 | 0x000004C0 | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.68055 |
.reloc | 0x001D8000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Title | Entropy | Size | Codepage | Language | Type |
---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
mscoree.dll |
PID | CMD | Path | Indicators | Parent process |
---|---|---|---|---|
3080 | "C:\Users\admin\AppData\Local\Temp\ok.exe" | C:\Users\admin\AppData\Local\Temp\ok.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Description: Exit code: 0 Version: 0.0.0.0 | ||||
3788 | schtasks /create /f /sc minute /mo 1 /tn "'ok'" /tr "'C:\Users\admin\AppData\Roaming\MicrosoftSoundService.exe'" | C:\Windows\system32\schtasks.exe | — | ok.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
2892 | "C:\Users\admin\AppData\Roaming\MicrosoftSoundService.exe" | C:\Users\admin\AppData\Roaming\MicrosoftSoundService.exe | — | ok.exe |
User: admin Integrity Level: MEDIUM Description: Version: 0.0.0.0 | ||||
3052 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe | MicrosoftSoundService.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Version: 4.6.1055.0 built by: NETFXREL2 | ||||
2312 | C:\Users\admin\AppData\Roaming\MicrosoftSoundService.exe | C:\Users\admin\AppData\Roaming\MicrosoftSoundService.exe | — | taskeng.exe |
User: admin Integrity Level: MEDIUM Description: Version: 0.0.0.0 | ||||
1676 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe | MicrosoftSoundService.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 4.6.1055.0 built by: NETFXREL2 | ||||
3592 | "C:\Program Files\Internet Explorer\iexplore.exe" | C:\Program Files\Internet Explorer\iexplore.exe | explorer.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Version: 8.00.7600.16385 (win7_rtm.090713-1255) | ||||
2396 | "C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:3592 CREDAT:71937 | C:\Program Files\Internet Explorer\iexplore.exe | — | iexplore.exe |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Version: 8.00.7600.16385 (win7_rtm.090713-1255) |
(PID) Process: | (3080) ok.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
(PID) Process: | (3080) ok.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | AutoDetect |
Value: 1 | |||
(PID) Process: | (3052) Regasm.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\5F\52C64B7E |
Operation: | write | Name: | LanguageList |
Value: en-US | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main |
Operation: | write | Name: | CompatibilityFlags |
Value: 0 | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
Operation: | write | Name: | AutoDetect |
Value: 1 | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones |
Operation: | write | Name: | SecuritySafe |
Value: 1 | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections |
Operation: | write | Name: | SavedLegacySettings |
Value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| |||
(PID) Process: | (3592) iexplore.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Recovery\Active |
Operation: | write | Name: | {7FB04DF9-4691-11E9-BEEC-5254004A04AF} |
Value: 0 |
PID | Process | Filename | Type | |
---|---|---|---|---|
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\CabECC2.tmp | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\TarECC3.tmp | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\CabECF3.tmp | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\TarECF4.tmp | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\CabEE0F.tmp | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\TarEE10.tmp | — | |
MD5:— | SHA256:— | |||
3592 | iexplore.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\R9ZEWH8D\favicon[1].ico | — | |
MD5:— | SHA256:— | |||
3592 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico | — | |
MD5:— | SHA256:— | |||
3052 | Regasm.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 | binary | |
MD5:96EA1F39FD7CB93E2D57EAAA18F52130 | SHA256:F966799309CBC7D4E0F02260FD166B540FF6CB2962B74A2AE7077464B5229841 | |||
3052 | Regasm.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 | compressed | |
MD5:02C1120F28378FD32B58CEC3BB9458C2 | SHA256:F3C77083FE5D71225CEEA0337E819ED7049E2A5692E6C662C5A0EAA97DB3DFF9 |
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
---|---|---|---|---|---|---|---|---|---|
3052 | Regasm.exe | GET | 200 | 2.16.186.56:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | unknown | compressed | 55.2 Kb | whitelisted |
3592 | iexplore.exe | GET | 200 | 13.107.21.200:80 | http://www.bing.com/favicon.ico | US | image | 237 b | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
---|---|---|---|---|---|---|
3592 | iexplore.exe | 13.107.21.200:80 | www.bing.com | Microsoft Corporation | US | whitelisted |
3052 | Regasm.exe | 206.189.192.66:1337 | takethei.duckdns.org | — | US | malicious |
3052 | Regasm.exe | 2.16.186.56:80 | www.download.windowsupdate.com | Akamai International B.V. | — | whitelisted |
Domain | IP | Reputation |
---|---|---|
takethei.duckdns.org |
| malicious |
www.download.windowsupdate.com |
| whitelisted |
www.bing.com |
| whitelisted |
PID | Process | Class | Message |
---|---|---|---|
— | — | Misc activity | ET INFO DYNAMIC_DNS Query to *.duckdns. Domain |
3052 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Malicious SSL Certificate (Orcus RAT) |
3052 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Malicious SSL Certificate (Orcus RAT) |
3052 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Malicious SSL connection (Orcus RAT) |