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| File name: | async.exe |
| Full analysis: | https://app.any.run/tasks/44757b0d-32ea-4e8c-accb-fc1cbd7b0eff |
| 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: | October 19, 2020, 22:59:18 |
| 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: | C7E579A1FE258B1DC3F81827FFD558A0 |
| SHA1: | 96281B4E4DB28BF388B5007E3602A923FCF017DF |
| SHA256: | F69816CEC1B5B6FED3886D36BD676CCCD854053A5E211259D2DF8214BBAA9AEB |
| SSDEEP: | 6144:Txi1JUOibrf6b1MguQ85D8vOU7l0KWN5ev2o:1i1OOEf6b1MguQ85D8vOUqKWN5S2o |
MALICIOUS
Changes settings of System certificates
- async.exe (PID: 4064)
- async.exe (PID: 2916)
Connects to CnC server
- async.exe (PID: 4064)
ASYNCRAT was detected
- async.exe (PID: 4064)
SUSPICIOUS
Adds / modifies Windows certificates
- async.exe (PID: 2916)
Application launched itself
- async.exe (PID: 2916)
INFO
Reads settings of System Certificates
- async.exe (PID: 4064)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (47.7) |
|---|---|---|
| .scr | | | Windows screen saver (22.6) |
| .dll | | | Win32 Dynamic Link Library (generic) (11.3) |
| .exe | | | Win32 Executable (generic) (7.7) |
| .exe | | | Win16/32 Executable Delphi generic (3.5) |
EXIF
EXE
| LegalTrademarks: | 艾艾豆 |
|---|---|
| AssemblyVersion: | 7.3.5.7 |
| ProductVersion: | 7.3.5.7 |
| ProductName: | 诶豆诶 豆艾儿 |
| OriginalFileName: | 诶豆诶 豆艾儿.exe |
| LegalCopyright: | © 诶吾吾. All rights reserved. |
| FileVersion: | 2.3.5.7 |
| FileDescription: | 吾豆艾 豆诶吾 |
| CompanyName: | 艾艾艾 |
| Comments: | 吾儿豆 儿诶豆 |
| CharacterSet: | Unicode |
| LanguageCode: | English (U.S.) |
| FileSubtype: | - |
| ObjectFileType: | Dynamic link library |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 7.3.5.7 |
| FileVersionNumber: | 2.3.5.7 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 6 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x86afe |
| UninitializedDataSize: | - |
| InitializedDataSize: | 55808 |
| CodeSize: | 543744 |
| LinkerVersion: | 48 |
| PEType: | PE32 |
| TimeStamp: | 2020:08:31 23:12:06+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 31-Aug-2020 21:12:06 |
| Detected languages: |
|
| Comments: | 吾儿豆 儿诶豆 |
| CompanyName: | 艾艾艾 |
| FileDescription: | 吾豆艾 豆诶吾 |
| FileVersion: | 2.3.5.7 |
| LegalCopyright: | © 诶吾吾. All rights reserved. |
| OriginalFilename: | 诶豆诶 豆艾儿.exe |
| ProductName: | 诶豆诶 豆艾儿 |
| ProductVersion: | 7.3.5.7 |
| Assembly Version: | 7.3.5.7 |
| LegalTrademarks: | 艾艾豆 |
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: | 31-Aug-2020 21:12:06 |
| 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 | 0x00084B04 | 0x00084C00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.09419 |
.rsrc | 0x00088000 | 0x0000D674 | 0x0000D800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.06616 |
.reloc | 0x00096000 | 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 | 3.77308 | 764 | Latin 1 / Western European | English - United States | RT_VERSION |
2 | 2.55015 | 1640 | Latin 1 / Western European | English - United States | RT_ICON |
3 | 2.54456 | 744 | Latin 1 / Western European | English - United States | RT_ICON |
4 | 2.80741 | 296 | Latin 1 / Western European | English - United States | RT_ICON |
5 | 7.72745 | 4128 | Latin 1 / Western European | English - United States | RT_ICON |
6 | 2.61203 | 3752 | Latin 1 / Western European | English - United States | RT_ICON |
7 | 2.44952 | 2216 | Latin 1 / Western European | English - United States | RT_ICON |
8 | 1.44142 | 1384 | Latin 1 / Western European | English - United States | RT_ICON |
9 | 7.75663 | 4491 | Latin 1 / Western European | English - United States | RT_ICON |
10 | 3.18593 | 16936 | Latin 1 / Western European | English - United States | RT_ICON |
Imports
mscoree.dll |
Total processes
38
Monitored processes
3
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 2916 | "C:\Users\admin\AppData\Local\Temp\async.exe" | C:\Users\admin\AppData\Local\Temp\async.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Exit code: 1 | ||||
| 2592 | timeout | C:\Windows\system32\timeout.exe | — | async.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: timeout - pauses command processing Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 4064 | "C:\Users\admin\AppData\Local\Temp\async.exe" | C:\Users\admin\AppData\Local\Temp\async.exe | async.exe | |
User: admin Integrity Level: MEDIUM | ||||
Total events
120
Read events
82
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
4
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Cab81E6.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Tar81E7.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Cab8227.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Tar8228.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Cab8333.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Tar8334.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Cab8400.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Tar8401.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Cab847F.tmp | — | |
MD5:— | SHA256:— | |||
| 4064 | async.exe | C:\Users\admin\AppData\Local\Temp\Tar8480.tmp | — | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
3
DNS requests
4
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
4064 | async.exe | GET | 200 | 2.16.106.186:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | unknown | compressed | 57.5 Kb | whitelisted |
4064 | async.exe | GET | 304 | 2.16.106.186:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | unknown | compressed | 57.5 Kb | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4064 | async.exe | 2.16.106.186:80 | www.download.windowsupdate.com | Akamai International B.V. | — | whitelisted |
4064 | async.exe | 193.161.193.99:57654 | xxxzxxx.ddns.net | OOO Bitree Networks | RU | malicious |
2916 | async.exe | 104.24.126.89:443 | hastebin.com | Cloudflare Inc | US | shared |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.google.it |
| whitelisted |
hastebin.com |
| malicious |
xxxzxxx.ddns.net |
| malicious |
www.download.windowsupdate.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.ddns .net |
4064 | async.exe | A Network Trojan was detected | MALWARE [PTsecurity] AsyncRAT |
4064 | async.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (AsyncRAT CnC) |
4064 | async.exe | A Network Trojan was detected | MALWARE [PTsecurity] AsyncRAT |
1 ETPRO signatures available at the full report