Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    20-06-2024 03:42

General

  • Target

    92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe

  • Size

    3.2MB

  • MD5

    0a389fd39bc39dfe5f215952b1cea5cc

  • SHA1

    b9b30185c0f9b88a84e9e1e9eb3026c7c2e975af

  • SHA256

    92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684

  • SHA512

    fd79031e4e6f9f2964fff5371efdf2d0891d6292b3810b9dcbc40c33062c0587d7abf7f35e3c51a171c8b3fee46046f6dc23f753a655eef9fb3b1b8291a63c87

  • SSDEEP

    24576:tCwsbKgbQ5NANIvGTYwMHXA+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nHv:tCwsbCANnKXferL7Vwe/Gg0P+WhT1u

Malware Config

Signatures

  • Detect PurpleFox Rootkit 7 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 8 IoCs
  • Gh0strat

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

  • PurpleFox

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

  • Drops file in Drivers directory 1 IoCs
  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 8 IoCs
  • UPX packed file 9 IoCs

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

  • Drops file in System32 directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies Internet Explorer settings 1 TTPs 34 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe
    "C:\Users\Admin\AppData\Local\Temp\92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Server Software Component: Terminal Services DLL
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:2420
    • C:\Users\Admin\AppData\Local\Temp\N.exe
      C:\Users\Admin\AppData\Local\Temp\\N.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\N.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2652
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:2532
    • C:\Users\Admin\AppData\Local\Temp\HD_92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe
      C:\Users\Admin\AppData\Local\Temp\HD_92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" https://ifeedback.qq.com/platform/feedback?app_id=30&uin=PCWeChat202406200342
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2996 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:2024
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
    1⤵
      PID:2488
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Windows\SysWOW64\Remote Data.exe
        "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259399570.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2840
    • C:\Windows\SysWOW64\TXPlatfor.exe
      C:\Windows\SysWOW64\TXPlatfor.exe -auto
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2672
      • C:\Windows\SysWOW64\TXPlatfor.exe
        C:\Windows\SysWOW64\TXPlatfor.exe -acsi
        2⤵
        • Drops file in Drivers directory
        • Sets service image path in registry
        • Executes dropped EXE
        • Suspicious behavior: LoadsDriver
        • Suspicious use of AdjustPrivilegeToken
        PID:2136

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Server Software Component

    1
    T1505

    Terminal Services DLL

    1
    T1505.005

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Remote System Discovery

    1
    T1018

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\HD_X.dat
      Filesize

      2.6MB

      MD5

      b839588744c7f743c0222fc5562f2c6d

      SHA1

      85e65e774ee60d9db73555d2293508024ebb0b63

      SHA256

      fe84230efaf15326dd66fc93c501de9c04bab33426925174cc61d15b0d6a4ad9

      SHA512

      04a6311e9b05effa2b1ebd68d4da33dd5115e48f6aa68d8ba26a15a3c8fc028fa1696c201ad9c8ab3ff127baa573c808cdf9a30598fe2684ec18fffb202150ed

    • C:\Users\Admin\AppData\Local\Temp\N.exe
      Filesize

      377KB

      MD5

      4a36a48e58829c22381572b2040b6fe0

      SHA1

      f09d30e44ff7e3f20a5de307720f3ad148c6143b

      SHA256

      3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

      SHA512

      5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

    • \Users\Admin\AppData\Local\Temp\HD_92a771f4067943d3bef6d4707c03e8708552b51aa881cb5dd75e6a664ee06684.exe
      Filesize

      555KB

      MD5

      11c9f88ceb25ba111f5d0e28d836ad3e

      SHA1

      bde2c5841922445cf71ecfb3019a21ee650ce85b

      SHA256

      5b9386c5eb542db3628d69ddc565b1e568f9ab955d910eb5b84b8bb50029fa18

      SHA512

      4f93a14b84c856f8ab61f3e4dd73ae9beb58c2bbd84b16081cc269173a03f23087ffd15d88a20edccfbbc695a62409c0c36f8e12c38943241e89cb8d64427bcd

    • \Users\Admin\AppData\Local\Temp\R.exe
      Filesize

      941KB

      MD5

      8dc3adf1c490211971c1e2325f1424d2

      SHA1

      4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

      SHA256

      bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

      SHA512

      ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

    • \Windows\SysWOW64\259399570.txt
      Filesize

      899KB

      MD5

      a86e0b286aa38e2ac875096744dd3408

      SHA1

      61e00e27e3ac9dff6e4de2c4c38795280898116b

      SHA256

      4d8ae2d74bcb1fe6b8d1c39835f61ea8b730b55f9d23c3d40f744f06f79d450d

      SHA512

      15de90d4b7d352aa25484ed198356cf8ab953543aa9da60c467c3d7e02c5136b081d12e24c9331275f5e56a2b49a6499e1bbc6ed1480ae28bed4050bc4ab6efc

    • \Windows\SysWOW64\Remote Data.exe
      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/2136-39-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2136-38-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2136-37-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2136-35-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2136-41-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2136-48-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2208-21-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2208-20-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/2208-18-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB