File name: | AsyncClient.exe |
Full analysis: | https://app.any.run/tasks/8327c0a4-46ef-4dc3-a955-876b5ff81e0f |
Verdict: | Malicious activity |
Threats: | AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions. |
Analysis date: | January 24, 2022, 21:33:40 |
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: | 326D2DC0B6DF146324A510773D5EAA85 |
SHA1: | B9AEA0263F6AFF15DB1A35D295C269497F4C5C32 |
SHA256: | 920F4DDF419FB6EEAA0AD0336ACE2C986E8A523AE8A6776023AB746DC6C4DFD5 |
SSDEEP: | 768:2uY49T3kH1jWUvmqRmo2qbiZu/8hPIPO0CjMCM0bVjnrpl743RxUHK2TenS48BD0:2uY49T34l2JcBPOl7bVHvs3RxUH7SnSE |
.exe | | | Generic CIL Executable (.NET, Mono, etc.) (82.9) |
---|---|---|
.dll | | | Win32 Dynamic Link Library (generic) (7.4) |
.exe | | | Win32 Executable (generic) (5.1) |
.exe | | | Generic Win/DOS Executable (2.2) |
.exe | | | DOS Executable Generic (2.2) |
AssemblyVersion: | 1.0.0.0 |
---|---|
ProductVersion: | 1.0.0.0 |
ProductName: | - |
OriginalFileName: | Stub.exe |
LegalTrademarks: | - |
LegalCopyright: | - |
InternalName: | Stub.exe |
FileVersion: | 1.0.0.0 |
FileDescription: | - |
CompanyName: | - |
Comments: | - |
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: | 0xd0ae |
UninitializedDataSize: | - |
InitializedDataSize: | 2560 |
CodeSize: | 45568 |
LinkerVersion: | 8 |
PEType: | PE32 |
TimeStamp: | 2020:05:10 07:24:51+02:00 |
MachineType: | Intel 386 or later, and compatibles |
Architecture: | IMAGE_FILE_MACHINE_I386 |
---|---|
Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
Compilation Date: | 10-May-2020 05:24:51 |
Comments: | - |
CompanyName: | - |
FileDescription: | - |
FileVersion: | 1.0.0.0 |
InternalName: | Stub.exe |
LegalCopyright: | - |
LegalTrademarks: | - |
OriginalFilename: | Stub.exe |
ProductName: | - |
ProductVersion: | 1.0.0.0 |
Assembly Version: | 1.0.0.0 |
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: | 3 |
Time date stamp: | 10-May-2020 05:24:51 |
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 | 0x0000B0B4 | 0x0000B200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.62391 |
.rsrc | 0x0000E000 | 0x000007FF | 0x00000800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.88507 |
.reloc | 0x00010000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Title | Entropy | Size | Codepage | Language | Type |
---|---|---|---|---|---|
1 | 5.22615 | 1171 | UNKNOWN | UNKNOWN | RT_MANIFEST |
mscoree.dll |
PID | CMD | Path | Indicators | Parent process | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1988 | "C:\Users\admin\AppData\Local\Temp\AsyncClient.exe" | C:\Users\admin\AppData\Local\Temp\AsyncClient.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
2228 | C:\Windows\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\tmpFD6E.tmp.bat"" | C:\Windows\system32\cmd.exe | — | AsyncClient.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
2480 | timeout 3 | C:\Windows\system32\timeout.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: timeout - pauses command processing Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
2148 | "C:\Users\admin\AppData\Local\Temp\svchost.exe" | C:\Users\admin\AppData\Local\Temp\svchost.exe | cmd.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Version: 1.0.0.0 Modules
|
(PID) Process: | (1988) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
Operation: | write | Name: | LanguageList |
Value: en-US | |||
(PID) Process: | (1988) AsyncClient.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
Operation: | write | Name: | svchost |
Value: "C:\Users\admin\AppData\Local\Temp\svchost.exe" | |||
(PID) Process: | (2148) svchost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
Operation: | write | Name: | LanguageList |
Value: en-US |
PID | Process | Filename | Type | |
---|---|---|---|---|
2148 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506 | binary | |
MD5:0F98B0B6EC0C30A35A5D1991773F3368 | SHA256:9CE724032297B17A64C229DAEE852A42B7A19A3CF316E2411DD315C18F81AABA | |||
2148 | svchost.exe | C:\Users\admin\AppData\Local\Temp\Tar1E65.tmp | cat | |
MD5:D99661D0893A52A0700B8AE68457351A | SHA256:BDD5111162A6FA25682E18FA74E37E676D49CAFCB5B7207E98E5256D1EF0D003 | |||
1988 | AsyncClient.exe | C:\Users\admin\AppData\Local\Temp\tmpFD6E.tmp.bat | text | |
MD5:EDDA12C520217DC50C5206E327B1B559 | SHA256:B3A4060C7A7D769A1AD6651CF109737FBA440BDD5C3FA42CE1C32EF37508A37C | |||
1988 | AsyncClient.exe | C:\Users\admin\AppData\Local\Temp\svchost.exe | executable | |
MD5:326D2DC0B6DF146324A510773D5EAA85 | SHA256:920F4DDF419FB6EEAA0AD0336ACE2C986E8A523AE8A6776023AB746DC6C4DFD5 | |||
2148 | svchost.exe | C:\Users\admin\AppData\Local\Temp\Cab1E64.tmp | compressed | |
MD5:ACAEDA60C79C6BCAC925EEB3653F45E0 | SHA256:6B0CECCF0103AFD89844761417C1D23ACC41F8AEBF3B7230765209B61EEE5658 | |||
2148 | svchost.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506 | compressed | |
MD5:ACAEDA60C79C6BCAC925EEB3653F45E0 | SHA256:6B0CECCF0103AFD89844761417C1D23ACC41F8AEBF3B7230765209B61EEE5658 |
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
---|---|---|---|---|---|---|---|---|---|
2148 | svchost.exe | GET | 200 | 209.197.3.8:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?8a9a5055b6b821a4 | US | compressed | 59.9 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
---|---|---|---|---|---|---|
2148 | svchost.exe | 209.197.3.8:80 | ctldl.windowsupdate.com | Highwinds Network Group, Inc. | US | whitelisted |
2148 | svchost.exe | 198.54.133.73:54893 | momo5050.ddns.net | tzulo, inc. | US | malicious |
Domain | IP | Reputation |
---|---|---|
momo5050.ddns.net |
| malicious |
ctldl.windowsupdate.com |
| whitelisted |
PID | Process | Class | Message |
---|---|---|---|
— | — | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.ddns .net |
2148 | svchost.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (AsyncRAT Server) |