| File name: | AsyncClient.exe |
| Full analysis: | https://app.any.run/tasks/cd9549ba-b615-4142-8c7e-e961e67b97f4 |
| Verdict: | Malicious activity |
| Analysis date: | August 08, 2020, 21:09:06 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 1775F13E72D64CF024F0A6A2A385A031 |
| SHA1: | 7453E2E059104B3B3B2AA595FCC4268BC145D773 |
| SHA256: | 1640F0429431A924854A15C8A3B2FE1DDFA45E316096B3F67764A069FA56F88F |
| SSDEEP: | 768:suK49TH4EjZWUR+ejmo2qr3qbJQ1DPIRgVCd2hcj0brdTFv/DBQaLj2xSkUpMHBf:suK49THf52ZeCmVLKIbr5p/DBQdSkmM9 |
MALICIOUS
Changes the autorun value in the registry
- AsyncClient.exe (PID: 2892)
SUSPICIOUS
Creates files in the user directory
- AsyncClient.exe (PID: 2892)
Executable content was dropped or overwritten
- AsyncClient.exe (PID: 2892)
Starts CMD.EXE for commands execution
- AsyncClient.exe (PID: 2892)
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.) (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) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2020:05:10 07:24:51+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 45568 |
| InitializedDataSize: | 3072 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xd09e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 6.2.19041.1 |
| ProductVersionNumber: | 6.2.19041.1 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | Microsoft Corporation |
| FileDescription: | COM Surrogate |
| FileVersion: | 6.2.19041.1 |
| InternalName: | dllhost.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| LegalTrademarks: | Microsoft Corporation |
| OriginalFileName: | dllhost.exe |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 6.2.19041.1 |
| AssemblyVersion: | 6.2.19041.1 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 10-May-2020 05:24:51 |
| Comments: | - |
| CompanyName: | Microsoft Corporation |
| FileDescription: | COM Surrogate |
| FileVersion: | 6.2.19041.1 |
| InternalName: | dllhost.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| LegalTrademarks: | Microsoft Corporation |
| OriginalFilename: | dllhost.exe |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 6.2.19041.1 |
| Assembly Version: | 6.2.19041.1 |
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: | 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: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x0000B0A4 | 0x0000B200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.61923 |
.rsrc | 0x0000E000 | 0x00000928 | 0x00000A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.03604 |
.reloc | 0x00010000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.22615 | 1171 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
43
Monitored processes
4
Malicious processes
0
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2084 | 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
| |||||||||||||||
| 2828 | "C:\Users\admin\AppData\Roaming\dllhost.exe" | C:\Users\admin\AppData\Roaming\dllhost.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: COM Surrogate Exit code: 0 Version: 6.2.19041.1 Modules
| |||||||||||||||
| 2892 | "C:\Users\admin\AppData\Local\Temp\AsyncClient.exe" | C:\Users\admin\AppData\Local\Temp\AsyncClient.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: COM Surrogate Exit code: 0 Version: 6.2.19041.1 Modules
| |||||||||||||||
| 2972 | cmd /c ""C:\Users\admin\AppData\Local\Temp\tmp4A34.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
| |||||||||||||||
Total events
61
Read events
35
Write events
26
Delete events
0
Modification events
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\system32\p2pcollab.dll,-8042 |
Value: Peer to Peer Trust | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\system32\qagentrt.dll,-10 |
Value: System Health Authentication | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\system32\dnsapi.dll,-103 |
Value: Domain Name System (DNS) Server Trust | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\System32\fveui.dll,-843 |
Value: BitLocker Drive Encryption | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\System32\fveui.dll,-844 |
Value: BitLocker Data Recovery Agent | |||
| (PID) Process: | (2892) AsyncClient.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | dllhost |
Value: "C:\Users\admin\AppData\Roaming\dllhost.exe" | |||
| (PID) Process: | (2828) dllhost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\136\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2892 | AsyncClient.exe | C:\Users\admin\AppData\Local\Temp\tmp4A34.tmp.bat | text | |
MD5:— | SHA256:— | |||
| 2892 | AsyncClient.exe | C:\Users\admin\AppData\Roaming\dllhost.exe | executable | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
1
Threats
1
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 |
|---|---|---|---|---|---|---|
2828 | dllhost.exe | 3.125.209.94:17483 | 0.tcp.eu.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
0.tcp.eu.ngrok.io |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1048 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |