Malware Analysis Report

2024-10-23 19:27

Sample ID 240629-b2k2jaxhnb
Target 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe
SHA256 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548
Tags
rat default 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

9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548

Threat Level: Known bad

The file 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe was found to be: Known bad.

Malicious Activity Summary

rat default asyncrat

Asyncrat family

Detects file containing reversed ASEP Autorun registry keys

AsyncRat

Async RAT payload

Detects file containing reversed ASEP Autorun registry keys

Async RAT payload

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 01:38

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Detects file containing reversed ASEP Autorun registry keys

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 01:38

Reported

2024-06-29 01:41

Platform

win7-20240611-en

Max time kernel

150s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Detects file containing reversed ASEP Autorun registry keys

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

Executes dropped EXE

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

Delays execution with timeout.exe

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

Scheduled Task/Job: Scheduled Task

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2160 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2160 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 2724 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2724 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2724 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2724 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 2348 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2348 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2348 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2348 wrote to memory of 2804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2348 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 2348 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 2348 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 2348 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe

"C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe"

C:\Windows\SysWOW64\cmd.exe

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

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp88A0.tmp.bat""

C:\Windows\SysWOW64\schtasks.exe

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

C:\Windows\SysWOW64\timeout.exe

timeout 3

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

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

Network

Country Destination Domain Proto
N/A 127.0.0.1:6606 tcp
SY 94.232.249.111:8808 tcp
SY 94.232.249.111:7707 tcp
SY 94.232.249.111:8808 tcp
SY 94.232.249.111:8808 tcp
SY 94.232.249.111:8808 tcp
SY 94.232.249.111:8808 tcp

Files

memory/2160-0-0x000000007451E000-0x000000007451F000-memory.dmp

memory/2160-1-0x00000000003D0000-0x00000000003E2000-memory.dmp

memory/2160-2-0x0000000074510000-0x0000000074BFE000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp88A0.tmp.bat

MD5 a7f98df4d007e31e49d2ecea38fdea11
SHA1 70d1c881f11f8594dab5fd92260313680fa369f8
SHA256 7653a78c617b41e6e647212e53f7ea48ce6a0ca3532ab0630007e5dd869d0191
SHA512 72e48456ec1d3cd41b0c11c28d20ef62e1129b63efbdc6aad7e70a8a514f8e072e0990832d46c92917ca92dfd95b1a2085fdb77e71a8fb676812ed087de963ad

memory/2160-11-0x0000000074510000-0x0000000074BFE000-memory.dmp

\Users\Admin\AppData\Roaming\svchost.exe

MD5 6d13d147a209e3be044035f0c03b7bde
SHA1 1eb5fb487ea7742ff1766ca5bf1b7191cfcf6283
SHA256 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548
SHA512 a159d09265fa833afddce5fe7fab6d4be0fc37fd4c2e0d1a15851427764ad3c068249ba28d000a076209d017cb65e4320752ac7a3a0314239d836f1e15ae39a9

memory/2784-16-0x0000000001150000-0x0000000001162000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 01:38

Reported

2024-06-29 01:40

Platform

win10v2004-20240611-en

Max time kernel

136s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Detects file containing reversed ASEP Autorun registry keys

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Delays execution with timeout.exe

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

Scheduled Task/Job: Scheduled Task

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4352 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4352 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4352 wrote to memory of 1232 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4352 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4352 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4352 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe C:\Windows\SysWOW64\cmd.exe
PID 4284 wrote to memory of 4540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4284 wrote to memory of 4540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4284 wrote to memory of 4540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1232 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 1232 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 1232 wrote to memory of 4344 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4284 wrote to memory of 1240 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 4284 wrote to memory of 1240 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 4284 wrote to memory of 1240 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe

"C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe"

C:\Windows\SysWOW64\cmd.exe

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4CA9.tmp.bat""

C:\Windows\SysWOW64\timeout.exe

timeout 3

C:\Windows\SysWOW64\schtasks.exe

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 23.41.178.51:443 www.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 51.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
N/A 127.0.0.1:7707 tcp
SY 94.232.249.111:8808 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
SY 94.232.249.111:8808 tcp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
N/A 127.0.0.1:6606 tcp
SY 94.232.249.111:7707 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
N/A 127.0.0.1:7707 tcp
SY 94.232.249.111:8808 tcp
SY 94.232.249.111:8808 tcp

Files

memory/4352-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

memory/4352-1-0x00000000003E0000-0x00000000003F2000-memory.dmp

memory/4352-2-0x0000000074A00000-0x00000000751B0000-memory.dmp

memory/4352-3-0x0000000004D00000-0x0000000004D9C000-memory.dmp

memory/4352-8-0x0000000074A00000-0x00000000751B0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp4CA9.tmp.bat

MD5 b6290a166a35093925f84a9f483b5fc9
SHA1 a220267a4a2f584ae31b63ad46afd432688be9df
SHA256 4285b3660aab3e83bdfc2b85d8430f331345de44568ac9771328d4e43b0f0056
SHA512 23d896b61304ecd81cbd1321c6834830894af019cf39b06c360369a5e2d6831abb8d1df0f863810fabcff8f3b0ca1c71805a5ecd28e43008a464b241c635e340

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

MD5 6d13d147a209e3be044035f0c03b7bde
SHA1 1eb5fb487ea7742ff1766ca5bf1b7191cfcf6283
SHA256 9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548
SHA512 a159d09265fa833afddce5fe7fab6d4be0fc37fd4c2e0d1a15851427764ad3c068249ba28d000a076209d017cb65e4320752ac7a3a0314239d836f1e15ae39a9

memory/1240-13-0x0000000074970000-0x0000000075120000-memory.dmp

memory/1240-14-0x0000000074970000-0x0000000075120000-memory.dmp