Malware Analysis Report

2025-06-16 05:44

Sample ID 240301-w5175sbe88
Target 873D9DB7925A4EC75BFECF636D0EF454.exe
SHA256 689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06
Tags
rat asyncrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06

Threat Level: Known bad

The file 873D9DB7925A4EC75BFECF636D0EF454.exe was found to be: Known bad.

Malicious Activity Summary

rat asyncrat

AsyncRat

Async RAT payload

Asyncrat family

Async RAT payload

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Creates scheduled task(s)

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-01 18:31

Signatures

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Asyncrat family

asyncrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-01 18:31

Reported

2024-03-01 18:33

Platform

win7-20240221-en

Max time kernel

122s

Max time network

171s

Command Line

"C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1920 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 1920 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 2052 wrote to memory of 2532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2052 wrote to memory of 2532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2052 wrote to memory of 2532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2052 wrote to memory of 2532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2720 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2720 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2720 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2720 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2720 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2720 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2720 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2720 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe

"C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"' & exit

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB5D7.tmp.bat""

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"'

C:\Windows\SysWOW64\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\svhost.exe

"C:\Users\Admin\AppData\Roaming\svhost.exe"

Network

Country Destination Domain Proto
TR 2.58.85.145:8808 tcp

Files

memory/1920-0-0x0000000001040000-0x0000000001058000-memory.dmp

memory/1920-1-0x0000000074EA0000-0x000000007558E000-memory.dmp

memory/1920-2-0x0000000000610000-0x0000000000650000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpB5D7.tmp.bat

MD5 956d5b8c0359c39874ed5c93efe4b93b
SHA1 0489f7b5eb5a1a4008bce825fbed183760c86537
SHA256 dad2fdbe55a92859a7841f23752193e45ce1295aa130f1eaf44e3c7e27cc2cf3
SHA512 08b746b705aeb3f48e6c17ce26478d2227514965210a7e1710f2529740ef4ef5d07f3a1044275363418042884838e8fdd41183dd4bcb717028f7a1c5fef3b691

memory/1920-11-0x0000000074EA0000-0x000000007558E000-memory.dmp

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 873d9db7925a4ec75bfecf636d0ef454
SHA1 aa3f6724934db998d963cd18d2b358a62dfcdbbc
SHA256 689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06
SHA512 00570e3cab520d34db457b50a4f2be0604baa62e9f95a28d1d7e36127064954199c95ad90d9a49ec3e06db04a1b49c6e3cdeef2ddbc20b7be457edf313e3d616

memory/2804-16-0x0000000000B20000-0x0000000000B38000-memory.dmp

memory/2804-17-0x0000000074E50000-0x000000007553E000-memory.dmp

memory/2804-18-0x0000000004B60000-0x0000000004BA0000-memory.dmp

memory/2804-36-0x0000000074E50000-0x000000007553E000-memory.dmp

memory/2804-37-0x0000000004B60000-0x0000000004BA0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-01 18:31

Reported

2024-03-01 18:34

Platform

win10v2004-20240226-en

Max time kernel

139s

Max time network

167s

Command Line

"C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 460 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 460 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 460 wrote to memory of 3312 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 460 wrote to memory of 4560 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 460 wrote to memory of 4560 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 460 wrote to memory of 4560 N/A C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe C:\Windows\SysWOW64\cmd.exe
PID 3312 wrote to memory of 628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 3312 wrote to memory of 628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 3312 wrote to memory of 628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4560 wrote to memory of 4140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4560 wrote to memory of 4140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4560 wrote to memory of 4140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4560 wrote to memory of 864 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 4560 wrote to memory of 864 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 4560 wrote to memory of 864 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svhost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe

"C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"' & exit

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC043.tmp.bat""

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"'

C:\Windows\SysWOW64\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\svhost.exe

"C:\Users\Admin\AppData\Roaming\svhost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
TR 2.58.85.145:6004 tcp
US 8.8.8.8:53 145.85.58.2.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp

Files

memory/460-0-0x0000000075320000-0x0000000075AD0000-memory.dmp

memory/460-1-0x0000000000CD0000-0x0000000000CE8000-memory.dmp

memory/460-2-0x00000000057D0000-0x00000000057E0000-memory.dmp

memory/460-3-0x0000000005880000-0x000000000591C000-memory.dmp

memory/460-8-0x0000000075320000-0x0000000075AD0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpC043.tmp.bat

MD5 9ad37ebb44ffbb56c01934fbfebd073b
SHA1 e895a634c897ace6cd5d8f1315a2ea2bbb98ff32
SHA256 630644ad287fc01e4d432b7b379aefc9f90da37c7b3bb10a8eb7e3f99913f970
SHA512 4cbaaaa9615d66a0e1bd936fb67d19b6e376d82e4962a4a04c4363a9d0435324015aff252c1bc30cbd464cff25c2d7b64711dea835a23110f68b1318096d3938

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 873d9db7925a4ec75bfecf636d0ef454
SHA1 aa3f6724934db998d963cd18d2b358a62dfcdbbc
SHA256 689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06
SHA512 00570e3cab520d34db457b50a4f2be0604baa62e9f95a28d1d7e36127064954199c95ad90d9a49ec3e06db04a1b49c6e3cdeef2ddbc20b7be457edf313e3d616

memory/864-13-0x0000000075270000-0x0000000075A20000-memory.dmp

memory/864-14-0x00000000056C0000-0x00000000056D0000-memory.dmp

memory/864-15-0x0000000006000000-0x00000000065A4000-memory.dmp

memory/864-16-0x0000000005A50000-0x0000000005AB6000-memory.dmp

memory/864-17-0x0000000075270000-0x0000000075A20000-memory.dmp

memory/864-18-0x00000000056C0000-0x00000000056D0000-memory.dmp