Analysis

  • max time kernel
    150s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-11-2024 12:37

General

  • Target

    b1b4a6322037cf898fff9a6d49dcceca4109fa56f8a48b237ec4ebe117d2b58a.msi

  • Size

    265.5MB

  • MD5

    ba1524657e23f77a7c91c2e89817dc03

  • SHA1

    5759d61e85d0a6e528f4f0cde621e02d692f8151

  • SHA256

    b1b4a6322037cf898fff9a6d49dcceca4109fa56f8a48b237ec4ebe117d2b58a

  • SHA512

    d096b401ac8cdd86f6b55b44a2946d95bd81be15233952401265201bcd48e0af9f2fe0679964a0862d1046f08f8458dcc24e96f008e9d75675a9f2e059082234

  • SSDEEP

    3145728:CPZHar69MPLkp0/LtpZ+WE5KPLo4xpksqqtPTel5W4XfWymu5nR/8ZM3GZV/ArfC:qZ6r69MYpet/+ZQLoeBJilujY7Ws0qH

Malware Config

Signatures

  • Detect PurpleFox Rootkit 2 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 3 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Gh0strat family
  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Purplefox family
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 9 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\b1b4a6322037cf898fff9a6d49dcceca4109fa56f8a48b237ec4ebe117d2b58a.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1248
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A83FED5E32581C2292F0A73DAF06248A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1868
      • C:\Program Files (x86)\aisizhushou-\aisizhushou-\dzaisizs.exe
        "C:\Program Files (x86)\aisizhushou-\aisizhushou-\dzaisizs.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:4024
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2576
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4D94C4E0DED203E1E6C85D5CB99181F8
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2488
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1068

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e581b83.rbs

      Filesize

      8KB

      MD5

      2ea9dc6f5bf9aff4cba7f4569a294844

      SHA1

      fccec31af89dee88666e71227700a7dc8d476ef7

      SHA256

      c46b9d21d2dabfee81921e954c6105cff2a50fa5e7c05f712da644cf34494c24

      SHA512

      cc559e20eec41d0a195e65bd69318694cd5bfbeafcab7727a4bd42bac45e86b1259bf2ea0b97ef774c00b219e103daa48d12eadd4269be705112e08a71afab88

    • C:\Users\Admin\AppData\Local\Temp\MSIA519.tmp

      Filesize

      79KB

      MD5

      9a4968fe67c177850163deafec64d0a6

      SHA1

      15b3f837c4f066cface8b3535a88523d20e5ca5c

      SHA256

      441d8c2ee1b434e21b7a8547f3c9e8b5b654ed7c790372d7870c8071d3a9b6ab

      SHA512

      256d1173b794bda93adece3bf2689c6875a67a8690139587c271f5c7a45f2a397caf164a4a05f34c9710ce65c7f473243c05be35155d130406999a834fc7643f

    • C:\Users\Admin\AppData\Local\Temp\MSIA82A.tmp

      Filesize

      287KB

      MD5

      30ee500e69f06a463f668522fc789945

      SHA1

      c67a201b59ca2388e8ef060de287a678f1fae705

      SHA256

      849131d9b648070461d0fa90cbf094e3c149643ceab43d0c834b82f48a2ef277

      SHA512

      87a0b5aa28a426a156041f050ac9abce2d25efc70570a829fce3831827dc2a426ca5a85acf672519c3c88b463dcdfa9f20ccef46f0eb07e8d04c4e0d9673246d

    • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

      Filesize

      24.1MB

      MD5

      38c0707a455c1d5beb8e6254991ff1fb

      SHA1

      a2ad60d9ed04557d1f4fba25dd000879c4f73bcb

      SHA256

      da5bcdd8c836f9733db4185877b95e2f6e82afd80dc4fc66b93357c95cb089c7

      SHA512

      3f2121a22f4076bd9764a08583b0ada2bd394133ba7b3242cf6f4b54208287eb1d781cc7bec42291fdcfe08e80f3218469458b61b82383abf137b8389f8bcbad

    • \??\Volume{0576a638-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{ee3c60b9-5579-4895-bb16-b17d8053a992}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      8e31ec1835ac52082590ad5390838f68

      SHA1

      2fa5b7659f7a43c424c261199038486e2633cf06

      SHA256

      cd34c6cf974bcae694a7e988e927d90c822598ba26bcebe919957d655ab44b48

      SHA512

      74496af13d98115aa2838bc2e2d3c2b69061cb9afa35613dcb0079ef27c9a40912403c89d35b0b73a915bfee2bd3889a00b2da1dda95e01d8f075c35ea4e85a6

    • memory/4024-69-0x0000000000400000-0x0000000001400000-memory.dmp

      Filesize

      16.0MB

    • memory/4024-70-0x0000000010000000-0x0000000010199000-memory.dmp

      Filesize

      1.6MB

    • memory/4024-77-0x0000000000400000-0x0000000001400000-memory.dmp

      Filesize

      16.0MB