File name:

Client.exe

Full analysis: https://app.any.run/tasks/594eb533-3eac-4924-ace8-27e0e918be0a
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.

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Analysis date: February 13, 2022, 19:38:56
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
rat
asyncrat
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

BE1AA7FEF182BB373BB6B83BFFE982A3

SHA1:

CDEC5D48431A6A0C1FDD7E9D291F9F3F621511F7

SHA256:

4D2B0739E24C9C6FEF2C956F6277A0F38268AC1030C499CF6EDE32F6A7FE4FBD

SSDEEP:

1536:shjExLDRwQuNMXbmaeWs1lheeiMl8GbbXwVJ0kGpZVclN:shjExLDRwQuNMXbreFlEeFmGbbXzzY

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Runs app for hidden code execution

      • Client.exe (PID: 3004)

    • ASYNCRAT was detected

      • Client.exe (PID: 3004)

    • Starts NET.EXE to view/add/change user profiles

      • cmd.exe (PID: 3600)

    • Starts NET.EXE to view/change users localgroup

      • cmd.exe (PID: 3600)

  • SUSPICIOUS

    • Uses SYSTEMINFO.EXE to read environment

      • cmd.exe (PID: 3600)

    • Checks supported languages

      • Client.exe (PID: 3004)
      • cmd.exe (PID: 3600)
      • WMIC.exe (PID: 476)
      • WMIC.exe (PID: 3288)

    • Reads the computer name

      • Client.exe (PID: 3004)
      • WMIC.exe (PID: 476)
      • WMIC.exe (PID: 3288)

    • Reads Environment values

      • Client.exe (PID: 3004)
      • netsh.exe (PID: 1120)
      • netsh.exe (PID: 3308)

    • Starts CMD.EXE for commands execution

      • Client.exe (PID: 3004)

    • Uses WMIC.EXE to obtain a system information

      • cmd.exe (PID: 3600)

    • Reads the time zone

      • net1.exe (PID: 3088)
      • net1.exe (PID: 2688)

    • Uses TASKLIST.EXE to query information about running processes

      • cmd.exe (PID: 3600)

    • Uses IPCONFIG.EXE to discover IP address

      • cmd.exe (PID: 3600)

    • Uses NETSTAT.EXE to discover network connections

      • cmd.exe (PID: 3600)

    • Starts SC.EXE for service management

      • cmd.exe (PID: 3600)

    • Uses NETSH.EXE for network configuration

      • cmd.exe (PID: 3600)

  • INFO

    • Reads settings of System Certificates

      • Client.exe (PID: 3004)

    • Checks supported languages

      • systeminfo.exe (PID: 3744)
      • HOSTNAME.EXE (PID: 3276)
      • query.exe (PID: 2164)
      • quser.exe (PID: 504)
      • net.exe (PID: 2388)
      • net.exe (PID: 2708)
      • net1.exe (PID: 1988)
      • net1.exe (PID: 4044)
      • net.exe (PID: 3824)
      • net1.exe (PID: 3764)
      • net.exe (PID: 1888)
      • net1.exe (PID: 3088)
      • ipconfig.exe (PID: 3880)
      • tasklist.exe (PID: 3660)
      • net.exe (PID: 2496)
      • net1.exe (PID: 2688)
      • NETSTAT.EXE (PID: 2432)
      • netsh.exe (PID: 1120)
      • sc.exe (PID: 2736)
      • ARP.EXE (PID: 188)
      • ROUTE.EXE (PID: 2192)
      • netsh.exe (PID: 3308)

    • Reads the computer name

      • systeminfo.exe (PID: 3744)
      • quser.exe (PID: 504)
      • net1.exe (PID: 1988)
      • HOSTNAME.EXE (PID: 3276)
      • net1.exe (PID: 4044)
      • net1.exe (PID: 3764)
      • tasklist.exe (PID: 3660)
      • net1.exe (PID: 2688)
      • net1.exe (PID: 3088)
      • sc.exe (PID: 2736)
      • ipconfig.exe (PID: 3880)
      • ROUTE.EXE (PID: 2192)
      • ARP.EXE (PID: 188)
      • NETSTAT.EXE (PID: 2432)
      • netsh.exe (PID: 1120)
      • netsh.exe (PID: 3308)

    • Reads the hosts file

      • cmd.exe (PID: 3600)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

AssemblyVersion: 1.0.7.0
ProductVersion: 1.0.7.0
ProductName: -
OriginalFileName: Client.exe
LegalTrademarks: -
LegalCopyright: -
InternalName: Client.exe
FileVersion: 1.0.7.0
FileDescription: -
CompanyName: -
Comments: -
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.0.7.0
FileVersionNumber: 1.0.7.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x1094e
UninitializedDataSize: -
InitializedDataSize: 4096
CodeSize: 59904
LinkerVersion: 8
PEType: PE32
TimeStamp: 2022:01:12 04:47:42+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 12-Jan-2022 03:47:42
Comments: -
CompanyName: -
FileDescription: -
FileVersion: 1.0.7.0
InternalName: Client.exe
LegalCopyright: -
LegalTrademarks: -
OriginalFilename: Client.exe
ProductName: -
ProductVersion: 1.0.7.0
Assembly Version: 1.0.7.0

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: 3
Time date stamp: 12-Jan-2022 03:47:42
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0000E954
0x0000EA00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.8524
.rsrc
0x00012000
0x00000DF7
0x00000E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.11012
.reloc
0x00014000
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
5.13313
2691
UNKNOWN
UNKNOWN
RT_MANIFEST

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
65
Monitored processes
26
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #ASYNCRAT client.exe cmd.exe no specs systeminfo.exe no specs hostname.exe no specs wmic.exe no specs net.exe no specs net1.exe no specs query.exe no specs quser.exe no specs net.exe no specs net1.exe no specs net.exe no specs net1.exe no specs net.exe no specs net1.exe no specs net.exe no specs net1.exe no specs wmic.exe no specs tasklist.exe no specs ipconfig.exe no specs route.exe no specs arp.exe no specs netstat.exe no specs sc.exe no specs netsh.exe no specs netsh.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
188arp -a C:\Windows\system32\ARP.EXE—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
TCP/IP Arp Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
476wmic logicaldisk get caption,description,providername C:\Windows\System32\Wbem\WMIC.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
WMI Commandline Utility
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
504"C:\Windows\system32\quser.exe"C:\Windows\system32\quser.exe—query.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Query User Utility
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
1120netsh firewall show state C:\Windows\system32\netsh.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
1888net user administrator C:\Windows\system32\net.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Net Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
1988C:\Windows\system32\net1 localgroup administrators C:\Windows\system32\net1.exe—net.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Net Command
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
2164query user C:\Windows\system32\query.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
MultiUser Query Utility
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2192route print C:\Windows\system32\ROUTE.EXE—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
TCP/IP Route Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2388net localgroup C:\Windows\system32\net.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Net Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2432netstat -ano C:\Windows\system32\NETSTAT.EXE—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
TCP/IP Netstat Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Total events
0
Read events
0
Write events
0
Delete events
0

Modification events

No data
Executable files
0
Suspicious files
3
Text files
0
Unknown types
1

Dropped files

PID
Process
Filename
Type
3004Client.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:ACAEDA60C79C6BCAC925EEB3653F45E0
SHA256:6B0CECCF0103AFD89844761417C1D23ACC41F8AEBF3B7230765209B61EEE5658
3004Client.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:—
SHA256:—
3004Client.exeC:\Users\admin\AppData\Local\Temp\Tar5A05.tmpcat
MD5:D99661D0893A52A0700B8AE68457351A
SHA256:BDD5111162A6FA25682E18FA74E37E676D49CAFCB5B7207E98E5256D1EF0D003
3004Client.exeC:\Users\admin\AppData\Local\Temp\Cab5A04.tmpcompressed
MD5:ACAEDA60C79C6BCAC925EEB3653F45E0
SHA256:6B0CECCF0103AFD89844761417C1D23ACC41F8AEBF3B7230765209B61EEE5658
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
3
DNS requests
1
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3004
Client.exe
GET
200
23.32.238.178:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?dd5ffcfbcecbc424
US
compressed
59.9 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
3004
Client.exe
95.68.176.102:7777
—
PJSC Rostelecom
RU
malicious
3004
Client.exe
23.32.238.178:80
ctldl.windowsupdate.com
XO Communications
US
suspicious

DNS requests

Domain
IP
Reputation
ctldl.windowsupdate.com
  • 23.32.238.178
  • 23.32.238.208
whitelisted

Threats

PID
Process
Class
Message
3004
Client.exe
A Network Trojan was detected
ET TROJAN Observed Malicious SSL Cert (AsyncRAT)
1 ETPRO signatures available at the full report
No debug info
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Reports
Client.exe