Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2023 18:59

General

  • Target

    tmp.exe

  • Size

    1.5MB

  • MD5

    8a757e86b59f384882de95c2294aaa3f

  • SHA1

    1cb9ef2b8d44fb2f709592f8395f59215d1440a4

  • SHA256

    3e09c13aecc31d606be3af123a26c1cd849103e5aca364b2e982e9a77a00b9d7

  • SHA512

    ae581250ecfece1933d6f3d7ab8f85050395690816f45e4e9b58bcfeb326253065e01c08802bb87589863bbfe308033cf10c4877a1416cc2c052f19032529511

  • SSDEEP

    24576:yQZoidOTdVZinacCET9Ecl1erdg0MCiVWhFU7cVdVLBrfm:yQZAdVyVT9n/Gg0P+Who+VLBrfm

Malware Config

Signatures

  • Detect PurpleFox Rootkit 5 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 9 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
  • Modifies RDP port number used by Windows 1 TTPs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 9 IoCs
  • UPX packed file 6 IoCs

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

  • Creates a Windows Service
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\\svchost.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1704
      • 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\svchost.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1140
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:1688
    • C:\Users\Admin\AppData\Local\Temp\svchos.exe
      C:\Users\Admin\AppData\Local\Temp\\svchos.exe
      2⤵
      • Sets DLL path for service in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:268
    • C:\Users\Admin\AppData\Local\Temp\HD_tmp.exe
      C:\Users\Admin\AppData\Local\Temp\HD_tmp.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1528
  • C:\Windows\SysWOW64\TXPlatforn.exe
    C:\Windows\SysWOW64\TXPlatforn.exe -auto
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Windows\SysWOW64\TXPlatforn.exe
      C:\Windows\SysWOW64\TXPlatforn.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:1988
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"
    1⤵
      PID:1524
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1652
      • C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
        C:\Windows\system32\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe "c:\windows\system32\7080479.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1588
    • C:\Windows\svchosvt.exe
      C:\Windows\svchosvt.exe
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\svchosvt.exe
        C:\Windows\svchosvt.exe Win7
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:1728

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    2
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    2
    T1082

    Query Registry

    1
    T1012

    Remote System Discovery

    1
    T1018

    Lateral Movement

    Remote Desktop Protocol

    1
    T1076

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      1.2MB

      MD5

      8950d3c3f6dd875fb3a82cae48670c08

      SHA1

      3f7e61ce726212fdda14d95b26a4280b2ef923da

      SHA256

      7157f8d2ab3673215cacaf3b1775cd1aecf6ace2013b44c9953a50a606e2441c

      SHA512

      4524f7501de998bdd8f1d8008204cddf40f5b75d7a86ff1df15f6820d38315e75786fc70fc8eff45966511ca80b30fd43beb4cc7f4a00a8a1d83e230369bb49f

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

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

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

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

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

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

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

      93KB

      MD5

      3b377ad877a942ec9f60ea285f7119a2

      SHA1

      60b23987b20d913982f723ab375eef50fafa6c70

      SHA256

      62954fdf65e629b39a29f539619d20691332184c6b6be5a826128a8e759bfa84

      SHA512

      af3a71f867ad9d28772c48b521097f9bf8931eb89fd2974e8de10990241419a39ddc3c0b36dd38aac4fdf14e1f0c5e228692618e93adce958d5b5dab8940e46f

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

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

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

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • C:\Windows\SysWOW64\TXPlatforn.exe
      Filesize

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • C:\Windows\SysWOW64\TXPlatforn.exe
      Filesize

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • C:\Windows\SysWOW64\TXPlatforn.exe
      Filesize

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • C:\Windows\svchosvt.exe
      Filesize

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

    • C:\Windows\svchosvt.exe
      Filesize

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

    • C:\Windows\svchosvt.exe
      Filesize

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

    • \??\c:\windows\SysWOW64\7080479.txt
      Filesize

      50KB

      MD5

      6f431062d5c3518b0dcfe812a7e47da5

      SHA1

      ae58c64077bbc02ffb25a4741fbb9d820327ddcb

      SHA256

      780006d7313ece4c25dc23e197ac265da63767933ce336d368f5ea8bc2772343

      SHA512

      e6d2992c4aca7fc8d642acb47b62c837dd116fa4e55f5bd1325056dda9f6169149bf7442e2cb2860ce2c42337b6aa78b26634be49dd8cbbd29ded701f2e3a30f

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

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

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

      344KB

      MD5

      a8a34cbea169de1c378fadc0a2bfac59

      SHA1

      5dce0859d44ec9104fb7e1b359d4e699e0e3b238

      SHA256

      66da82bfa142812ead99ade9b083c7d9b335d027c2d64a8b988c7c77b12ded1d

      SHA512

      312a176fe0e8154359c7270955486e6497748c602f7ef112681c6832b38550d1d2c70b1b9a31d7346841bd112425afbc9716d5199fdebff3fc69a89d9652d1f2

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

      93KB

      MD5

      3b377ad877a942ec9f60ea285f7119a2

      SHA1

      60b23987b20d913982f723ab375eef50fafa6c70

      SHA256

      62954fdf65e629b39a29f539619d20691332184c6b6be5a826128a8e759bfa84

      SHA512

      af3a71f867ad9d28772c48b521097f9bf8931eb89fd2974e8de10990241419a39ddc3c0b36dd38aac4fdf14e1f0c5e228692618e93adce958d5b5dab8940e46f

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

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • \Windows\SysWOW64\7080479.txt
      Filesize

      50KB

      MD5

      6f431062d5c3518b0dcfe812a7e47da5

      SHA1

      ae58c64077bbc02ffb25a4741fbb9d820327ddcb

      SHA256

      780006d7313ece4c25dc23e197ac265da63767933ce336d368f5ea8bc2772343

      SHA512

      e6d2992c4aca7fc8d642acb47b62c837dd116fa4e55f5bd1325056dda9f6169149bf7442e2cb2860ce2c42337b6aa78b26634be49dd8cbbd29ded701f2e3a30f

    • \Windows\SysWOW64\7080479.txt
      Filesize

      50KB

      MD5

      6f431062d5c3518b0dcfe812a7e47da5

      SHA1

      ae58c64077bbc02ffb25a4741fbb9d820327ddcb

      SHA256

      780006d7313ece4c25dc23e197ac265da63767933ce336d368f5ea8bc2772343

      SHA512

      e6d2992c4aca7fc8d642acb47b62c837dd116fa4e55f5bd1325056dda9f6169149bf7442e2cb2860ce2c42337b6aa78b26634be49dd8cbbd29ded701f2e3a30f

    • \Windows\SysWOW64\7080479.txt
      Filesize

      50KB

      MD5

      6f431062d5c3518b0dcfe812a7e47da5

      SHA1

      ae58c64077bbc02ffb25a4741fbb9d820327ddcb

      SHA256

      780006d7313ece4c25dc23e197ac265da63767933ce336d368f5ea8bc2772343

      SHA512

      e6d2992c4aca7fc8d642acb47b62c837dd116fa4e55f5bd1325056dda9f6169149bf7442e2cb2860ce2c42337b6aa78b26634be49dd8cbbd29ded701f2e3a30f

    • \Windows\SysWOW64\TXPlatforn.exe
      Filesize

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • \Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/1528-139-0x0000000010000000-0x000000001000B000-memory.dmp
      Filesize

      44KB

    • memory/1704-62-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/1704-61-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/1704-59-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/1988-138-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/1988-137-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB

    • memory/1988-121-0x0000000010000000-0x00000000101B6000-memory.dmp
      Filesize

      1.7MB