Malware Analysis Report

2025-08-10 17:44

Sample ID 230317-g46znsee86
Target service.exe
SHA256 be067c2c7c5a474442339d8adc999a0a288d56890d9781e88f536b6183cd398c
Tags
asyncrat default evasion rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

be067c2c7c5a474442339d8adc999a0a288d56890d9781e88f536b6183cd398c

Threat Level: Known bad

The file service.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat default evasion rat

AsyncRat

Async RAT payload

Blocklisted process makes network request

Downloads MZ/PE file

Sets file to hidden

Drops startup file

Executes dropped EXE

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Views/modifies file attributes

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-17 06:22

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-17 06:22

Reported

2023-03-17 06:25

Platform

win7-20230220-en

Max time kernel

27s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\service.exe"

Signatures

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\service.exe

"C:\Users\Admin\AppData\Local\Temp\service.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Unrestricted -nologo -command .\service.ps1

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs

MD5 e04e55d2e6cc3d920631fdc5d6dcc1ce
SHA1 2c4dbcff71f8678623a7c197440ec281804dc5a5
SHA256 f641a99ec7e549970c81d724766f2a60ff031a5ec92aa6fc84228c82eeb4b4eb
SHA512 9511fe4dc599187f4539b8cda476550c54e86cbfcaca339a5db12e980ec322bf488d7458bf76089aa1d845f164f7ddb8adea017923d9a4930b9e821b7a4ae998

C:\Users\Admin\AppData\Local\Temp\RarSFX0\service.ps1

MD5 8a97b217587bf21df5b6be29428a1251
SHA1 33bc1ad54acc40f29d1b09767811c4a9f779f9a5
SHA256 ac975c8129b58f138e0f9880d5d63e6ca9e350c875e09a6dd5c16b40eaa9ea0d
SHA512 944c4fbbb3e92afad4cb4fc9f675cbe0b12ff3ef371fa1a5acdffb8489d7c7dde6e2cb8c2a1e194db9eba8e7c74db82b91ceaa40bc3f189924adaeae01cc2409

memory/376-64-0x0000000002890000-0x00000000028D0000-memory.dmp

memory/376-65-0x0000000002890000-0x00000000028D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-17 06:22

Reported

2023-03-17 06:25

Platform

win10v2004-20230220-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\service.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Downloads MZ/PE file

Sets file to hidden

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\service.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe C:\Windows\SysWOW64\attrib.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe N/A

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\service.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 756 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 756 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 756 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 2452 wrote to memory of 3852 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2452 wrote to memory of 3852 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2452 wrote to memory of 3852 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3852 wrote to memory of 4512 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 3852 wrote to memory of 4512 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 3852 wrote to memory of 4512 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 3852 wrote to memory of 5032 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe
PID 3852 wrote to memory of 5032 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe
PID 3852 wrote to memory of 5032 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe

Views/modifies file attributes

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

Processes

C:\Users\Admin\AppData\Local\Temp\service.exe

"C:\Users\Admin\AppData\Local\Temp\service.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Unrestricted -nologo -command .\service.ps1

C:\Windows\SysWOW64\attrib.exe

"C:\Windows\System32\attrib.exe" +s +h .\\tmp1DD4.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 240.232.18.117.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 39.146.190.20.in-addr.arpa udp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.68.143:443 pastebin.com tcp
US 8.8.8.8:53 cdn-145.anonfiles.com udp
SE 195.96.151.38:443 cdn-145.anonfiles.com tcp
US 8.8.8.8:53 143.68.20.104.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 38.151.96.195.in-addr.arpa udp
US 104.20.68.143:443 pastebin.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 52.152.108.96:443 tcp
US 20.42.65.90:443 tcp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp
US 209.197.3.8:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs

MD5 e04e55d2e6cc3d920631fdc5d6dcc1ce
SHA1 2c4dbcff71f8678623a7c197440ec281804dc5a5
SHA256 f641a99ec7e549970c81d724766f2a60ff031a5ec92aa6fc84228c82eeb4b4eb
SHA512 9511fe4dc599187f4539b8cda476550c54e86cbfcaca339a5db12e980ec322bf488d7458bf76089aa1d845f164f7ddb8adea017923d9a4930b9e821b7a4ae998

memory/3852-141-0x0000000004920000-0x0000000004930000-memory.dmp

memory/3852-140-0x00000000048D0000-0x0000000004906000-memory.dmp

memory/3852-142-0x0000000004F60000-0x0000000005588000-memory.dmp

memory/3852-143-0x0000000004F00000-0x0000000004F22000-memory.dmp

memory/3852-144-0x0000000005800000-0x0000000005866000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eugyxmb2.z0t.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3852-150-0x0000000005870000-0x00000000058D6000-memory.dmp

memory/3852-155-0x0000000004920000-0x0000000004930000-memory.dmp

memory/3852-156-0x0000000005F40000-0x0000000005F5E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\RarSFX0\service.ps1

MD5 8a97b217587bf21df5b6be29428a1251
SHA1 33bc1ad54acc40f29d1b09767811c4a9f779f9a5
SHA256 ac975c8129b58f138e0f9880d5d63e6ca9e350c875e09a6dd5c16b40eaa9ea0d
SHA512 944c4fbbb3e92afad4cb4fc9f675cbe0b12ff3ef371fa1a5acdffb8489d7c7dde6e2cb8c2a1e194db9eba8e7c74db82b91ceaa40bc3f189924adaeae01cc2409

memory/3852-158-0x0000000006EF0000-0x0000000006F86000-memory.dmp

memory/3852-159-0x0000000006490000-0x00000000064AA000-memory.dmp

memory/3852-160-0x00000000064E0000-0x0000000006502000-memory.dmp

memory/3852-161-0x0000000007540000-0x0000000007AE4000-memory.dmp

memory/3852-162-0x0000000004920000-0x0000000004930000-memory.dmp

memory/3852-163-0x0000000008170000-0x00000000087EA000-memory.dmp

memory/3852-164-0x0000000007270000-0x00000000072A2000-memory.dmp

memory/3852-165-0x000000006F2C0000-0x000000006F30C000-memory.dmp

memory/3852-175-0x0000000008000000-0x000000000801E000-memory.dmp

memory/3852-176-0x0000000008120000-0x000000000812A000-memory.dmp

memory/3852-177-0x000000007FDB0000-0x000000007FDC0000-memory.dmp

memory/3852-178-0x0000000004920000-0x0000000004930000-memory.dmp

memory/3852-179-0x0000000008930000-0x000000000893E000-memory.dmp

memory/3852-180-0x0000000008990000-0x00000000089AA000-memory.dmp

memory/3852-181-0x0000000008980000-0x0000000008988000-memory.dmp

memory/3852-182-0x0000000004920000-0x0000000004930000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe

MD5 fa378b2bb6985eec44142dca9f381985
SHA1 5b6614fcfc131772ab7d8e9df13b84a9c8b8aec0
SHA256 07280cbf4815aba1b1841d4eeb86df01483c240301006c4f1d566e152e1ad783
SHA512 117dbd8efaedec137667fd6cd64db0ad2d1396118aeb29fcbf2e7876c4f68d085ccfe5526f586aedbd5e22d4f4e986ff1660b182e6f375d46cd900efe57cc0fa

memory/3852-185-0x0000000004920000-0x0000000004930000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp1DD4.exe

MD5 fa378b2bb6985eec44142dca9f381985
SHA1 5b6614fcfc131772ab7d8e9df13b84a9c8b8aec0
SHA256 07280cbf4815aba1b1841d4eeb86df01483c240301006c4f1d566e152e1ad783
SHA512 117dbd8efaedec137667fd6cd64db0ad2d1396118aeb29fcbf2e7876c4f68d085ccfe5526f586aedbd5e22d4f4e986ff1660b182e6f375d46cd900efe57cc0fa

memory/5032-187-0x0000000000570000-0x0000000000582000-memory.dmp

memory/5032-190-0x0000000004E80000-0x0000000004E90000-memory.dmp

memory/5032-191-0x0000000004E80000-0x0000000004E90000-memory.dmp