Malware Analysis Report

2025-08-10 17:43

Sample ID 230317-g2zgtaee77
Target service.exe
SHA256 c83bb3ba68f3f4fde63abea1a95a89566c4a8b75bac40d47b8733a1dac0d1658
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

c83bb3ba68f3f4fde63abea1a95a89566c4a8b75bac40d47b8733a1dac0d1658

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

Checks computer location settings

Drops startup file

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Views/modifies file attributes

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-17 06:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-17 06:18

Reported

2023-03-17 06:21

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 a5871da9a2df94e7f9e631b8d88db6f2
SHA1 0fe4a2d4ee43f0ddd04fdf6fcf18ea157f197b6b
SHA256 c3da432bc28fc4cd5346b0b1350217dbc1fb5939dd3436a1a1415d5f5a4c821d
SHA512 4c31e60bd2d823eec6f3c83973b0845c104632006877e3960ff3c7abc69b05f41d09a2dcede557d642b5e74a128800dfd543f2f88026a1400172ec4ea850084c

memory/1204-63-0x0000000002630000-0x0000000002670000-memory.dmp

memory/1204-64-0x0000000002630000-0x0000000002670000-memory.dmp

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

MD5 8a97b217587bf21df5b6be29428a1251
SHA1 33bc1ad54acc40f29d1b09767811c4a9f779f9a5
SHA256 ac975c8129b58f138e0f9880d5d63e6ca9e350c875e09a6dd5c16b40eaa9ea0d
SHA512 944c4fbbb3e92afad4cb4fc9f675cbe0b12ff3ef371fa1a5acdffb8489d7c7dde6e2cb8c2a1e194db9eba8e7c74db82b91ceaa40bc3f189924adaeae01cc2409

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-17 06:18

Reported

2023-03-17 06:21

Platform

win10v2004-20230220-en

Max time kernel

149s

Max time network

153s

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\service.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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\tmp7DD6.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\tmp7DD6.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\tmp7DD6.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-1-5-21-4238149048-355649189-894321705-1000_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\tmp7DD6.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 824 wrote to memory of 1068 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 824 wrote to memory of 1068 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 824 wrote to memory of 1068 N/A C:\Users\Admin\AppData\Local\Temp\service.exe C:\Windows\SysWOW64\WScript.exe
PID 1068 wrote to memory of 4696 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1068 wrote to memory of 4696 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1068 wrote to memory of 4696 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4696 wrote to memory of 2720 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 4696 wrote to memory of 2720 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 4696 wrote to memory of 2720 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\attrib.exe
PID 4696 wrote to memory of 652 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe
PID 4696 wrote to memory of 652 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe
PID 4696 wrote to memory of 652 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.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 .\\tmp7DD6.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 126.135.241.8.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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-145.anonfiles.com udp
SE 195.96.151.38:443 cdn-145.anonfiles.com tcp
US 8.8.8.8:53 170.34.67.172.in-addr.arpa udp
US 8.8.8.8:53 38.151.96.195.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 20.42.73.26:443 tcp
US 172.67.34.170:443 pastebin.com tcp
US 52.152.110.14:443 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 api.msn.com tcp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 199.176.139.52.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp

Files

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

MD5 a5871da9a2df94e7f9e631b8d88db6f2
SHA1 0fe4a2d4ee43f0ddd04fdf6fcf18ea157f197b6b
SHA256 c3da432bc28fc4cd5346b0b1350217dbc1fb5939dd3436a1a1415d5f5a4c821d
SHA512 4c31e60bd2d823eec6f3c83973b0845c104632006877e3960ff3c7abc69b05f41d09a2dcede557d642b5e74a128800dfd543f2f88026a1400172ec4ea850084c

memory/4696-140-0x00000000048A0000-0x00000000048D6000-memory.dmp

memory/4696-141-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4696-142-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4696-143-0x0000000004F10000-0x0000000005538000-memory.dmp

memory/4696-144-0x0000000005570000-0x0000000005592000-memory.dmp

memory/4696-145-0x0000000005710000-0x0000000005776000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qqoifdut.ijp.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4696-146-0x00000000057F0000-0x0000000005856000-memory.dmp

memory/4696-156-0x0000000005DF0000-0x0000000005E0E000-memory.dmp

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

MD5 8a97b217587bf21df5b6be29428a1251
SHA1 33bc1ad54acc40f29d1b09767811c4a9f779f9a5
SHA256 ac975c8129b58f138e0f9880d5d63e6ca9e350c875e09a6dd5c16b40eaa9ea0d
SHA512 944c4fbbb3e92afad4cb4fc9f675cbe0b12ff3ef371fa1a5acdffb8489d7c7dde6e2cb8c2a1e194db9eba8e7c74db82b91ceaa40bc3f189924adaeae01cc2409

memory/4696-158-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4696-159-0x0000000006DC0000-0x0000000006E56000-memory.dmp

memory/4696-160-0x0000000006330000-0x000000000634A000-memory.dmp

memory/4696-161-0x0000000006380000-0x00000000063A2000-memory.dmp

memory/4696-162-0x0000000007410000-0x00000000079B4000-memory.dmp

memory/4696-163-0x0000000008040000-0x00000000086BA000-memory.dmp

memory/4696-164-0x0000000007130000-0x0000000007162000-memory.dmp

memory/4696-165-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4696-166-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4696-167-0x000000006F180000-0x000000006F1CC000-memory.dmp

memory/4696-177-0x0000000007E40000-0x0000000007E5E000-memory.dmp

memory/4696-178-0x0000000007F60000-0x0000000007F6A000-memory.dmp

memory/4696-179-0x000000007FD00000-0x000000007FD10000-memory.dmp

memory/4696-180-0x0000000007FA0000-0x0000000007FAE000-memory.dmp

memory/4696-181-0x0000000008000000-0x000000000801A000-memory.dmp

memory/4696-182-0x0000000007FF0000-0x0000000007FF8000-memory.dmp

memory/4696-183-0x0000000002490000-0x00000000024A0000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe

MD5 fa378b2bb6985eec44142dca9f381985
SHA1 5b6614fcfc131772ab7d8e9df13b84a9c8b8aec0
SHA256 07280cbf4815aba1b1841d4eeb86df01483c240301006c4f1d566e152e1ad783
SHA512 117dbd8efaedec137667fd6cd64db0ad2d1396118aeb29fcbf2e7876c4f68d085ccfe5526f586aedbd5e22d4f4e986ff1660b182e6f375d46cd900efe57cc0fa

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp7DD6.exe

MD5 fa378b2bb6985eec44142dca9f381985
SHA1 5b6614fcfc131772ab7d8e9df13b84a9c8b8aec0
SHA256 07280cbf4815aba1b1841d4eeb86df01483c240301006c4f1d566e152e1ad783
SHA512 117dbd8efaedec137667fd6cd64db0ad2d1396118aeb29fcbf2e7876c4f68d085ccfe5526f586aedbd5e22d4f4e986ff1660b182e6f375d46cd900efe57cc0fa

memory/652-187-0x0000000000E00000-0x0000000000E12000-memory.dmp

memory/652-190-0x0000000005770000-0x0000000005780000-memory.dmp

memory/652-191-0x0000000005770000-0x0000000005780000-memory.dmp