Malware Analysis Report

2025-08-10 17:44

Sample ID 230317-g7k7daee93
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 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

Sets file to hidden

Blocklisted process makes network request

Downloads MZ/PE file

Executes dropped EXE

Drops startup file

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Views/modifies file attributes

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-17 06:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-17 06:26

Reported

2023-03-17 06:27

Platform

win10v2004-20230220-en

Max time kernel

35s

Max time network

37s

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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\service.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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\tmp8DD7.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\tmp8DD7.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\tmp8DD7.exe N/A

Legitimate hosting services abused for malware hosting/C2

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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_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\tmp8DD7.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 668 wrote to memory of 724 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 668 wrote to memory of 724 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 668 wrote to memory of 724 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 724 wrote to memory of 428 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 724 wrote to memory of 428 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 724 wrote to memory of 428 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 428 wrote to memory of 1696 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 428 wrote to memory of 1696 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 428 wrote to memory of 1696 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 428 wrote to memory of 3856 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe
PID 428 wrote to memory of 3856 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe
PID 428 wrote to memory of 3856 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe
PID 3856 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe C:\Windows\SysWOW64\cmd.exe
PID 3856 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe C:\Windows\SysWOW64\cmd.exe
PID 3856 wrote to memory of 1192 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe C:\Windows\SysWOW64\cmd.exe
PID 1192 wrote to memory of 3380 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1192 wrote to memory of 3380 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1192 wrote to memory of 3380 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.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 .\\tmp8DD7.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE9A9.tmp.bat""

C:\Windows\SysWOW64\timeout.exe

timeout 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 254.135.241.8.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 139.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 234.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 172.67.34.170:443 pastebin.com tcp
US 8.8.8.8:53 cdn-153.anonfiles.com udp
SE 195.96.151.46:443 cdn-153.anonfiles.com tcp
US 8.8.8.8:53 170.34.67.172.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 46.151.96.195.in-addr.arpa udp
US 172.67.34.170:443 pastebin.com tcp
US 8.8.8.8:53 5.tcp.eu.ngrok.io udp
DE 3.67.112.102:15738 5.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 102.112.67.3.in-addr.arpa udp
DE 3.67.112.102:15738 5.tcp.eu.ngrok.io tcp

Files

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

MD5 e04e55d2e6cc3d920631fdc5d6dcc1ce
SHA1 2c4dbcff71f8678623a7c197440ec281804dc5a5
SHA256 f641a99ec7e549970c81d724766f2a60ff031a5ec92aa6fc84228c82eeb4b4eb
SHA512 9511fe4dc599187f4539b8cda476550c54e86cbfcaca339a5db12e980ec322bf488d7458bf76089aa1d845f164f7ddb8adea017923d9a4930b9e821b7a4ae998

memory/428-140-0x0000000004D90000-0x0000000004DC6000-memory.dmp

memory/428-141-0x0000000005400000-0x0000000005A28000-memory.dmp

memory/428-142-0x0000000005280000-0x00000000052A2000-memory.dmp

memory/428-143-0x0000000005C90000-0x0000000005CF6000-memory.dmp

memory/428-144-0x0000000005D00000-0x0000000005D66000-memory.dmp

memory/428-150-0x0000000004D40000-0x0000000004D50000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tsiv3qho.ovd.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/428-151-0x0000000004D40000-0x0000000004D50000-memory.dmp

memory/428-156-0x0000000006330000-0x000000000634E000-memory.dmp

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

MD5 8a97b217587bf21df5b6be29428a1251
SHA1 33bc1ad54acc40f29d1b09767811c4a9f779f9a5
SHA256 ac975c8129b58f138e0f9880d5d63e6ca9e350c875e09a6dd5c16b40eaa9ea0d
SHA512 944c4fbbb3e92afad4cb4fc9f675cbe0b12ff3ef371fa1a5acdffb8489d7c7dde6e2cb8c2a1e194db9eba8e7c74db82b91ceaa40bc3f189924adaeae01cc2409

memory/428-158-0x0000000004D40000-0x0000000004D50000-memory.dmp

memory/428-159-0x0000000007550000-0x00000000075E6000-memory.dmp

memory/428-160-0x0000000006870000-0x000000000688A000-memory.dmp

memory/428-161-0x00000000068C0000-0x00000000068E2000-memory.dmp

memory/428-162-0x0000000007BD0000-0x0000000008174000-memory.dmp

memory/428-163-0x0000000008800000-0x0000000008E7A000-memory.dmp

memory/428-164-0x0000000007670000-0x00000000076A2000-memory.dmp

memory/428-165-0x000000006F490000-0x000000006F4DC000-memory.dmp

memory/428-175-0x0000000008400000-0x000000000841E000-memory.dmp

memory/428-176-0x0000000008520000-0x000000000852A000-memory.dmp

memory/428-177-0x000000007F670000-0x000000007F680000-memory.dmp

memory/428-178-0x00000000086A0000-0x00000000086AE000-memory.dmp

memory/428-179-0x0000000008700000-0x000000000871A000-memory.dmp

memory/428-180-0x00000000086F0000-0x00000000086F8000-memory.dmp

memory/428-181-0x0000000004D40000-0x0000000004D50000-memory.dmp

memory/428-182-0x0000000004D40000-0x0000000004D50000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe

MD5 6b95c5b02a8c31726cab09fc575423d5
SHA1 840aedd363c32d13cf8ec14729f68b9e6c31d374
SHA256 ec22734717b5451dd8527cf3d564fe450d2a12523e5ec880b9d8c60345f762b9
SHA512 f6eeb9d5b44617103d96662311db7e483d5c1b7be849d8e99a9d9284dce830d7fcedaf4247d3e45e1823d27ed8ea6df328596744b6ee2de98ccfee0f36f5fb40

memory/428-185-0x0000000004D40000-0x0000000004D50000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp8DD7.exe

MD5 6b95c5b02a8c31726cab09fc575423d5
SHA1 840aedd363c32d13cf8ec14729f68b9e6c31d374
SHA256 ec22734717b5451dd8527cf3d564fe450d2a12523e5ec880b9d8c60345f762b9
SHA512 f6eeb9d5b44617103d96662311db7e483d5c1b7be849d8e99a9d9284dce830d7fcedaf4247d3e45e1823d27ed8ea6df328596744b6ee2de98ccfee0f36f5fb40

memory/3856-187-0x0000000000910000-0x0000000000922000-memory.dmp

memory/3856-190-0x0000000005220000-0x0000000005230000-memory.dmp

memory/3856-191-0x0000000005B60000-0x0000000005BFC000-memory.dmp

memory/3856-192-0x0000000005220000-0x0000000005230000-memory.dmp

memory/3856-193-0x0000000007020000-0x0000000007096000-memory.dmp

memory/3856-194-0x0000000006FC0000-0x0000000006FDE000-memory.dmp

memory/3856-195-0x0000000007170000-0x0000000007202000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpE9A9.tmp.bat

MD5 201e036830c697de9ac921e60ebd057c
SHA1 51a5797aaf13d7917b65eea111485ecd2c424117
SHA256 b5c79d2bc353cad9ec20c3d79e66d2aed3c15ed20939a9b66c768449d20b1338
SHA512 265f0284448e8fd7b84e8622af241aba782a6a578db614217a5081422208e8b45b5d88baa64b033ede20c7e4e146a7b2e099dbe6217bcd08ca6bddbea676c587