Analysis

  • max time kernel
    90s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 07:45

General

  • Target

    fd1bbc33b4161303c72b30c2ea2728437fb23dadf584d134ada046d35c53f1ad.exe

  • Size

    593KB

  • MD5

    7a425f65756af4134a4dc89264613e2f

  • SHA1

    af51657c3375a8d6c4a5d027ea7b0d00f36b8a9e

  • SHA256

    fd1bbc33b4161303c72b30c2ea2728437fb23dadf584d134ada046d35c53f1ad

  • SHA512

    efd5aaa9f2d57263df3917f94992845568fd3e7c1f1a4cd9c436a572b62d995f970fe9c566ee96097057c7b363823eb8cbaad89a18ad0f81b09dcda0d44fba03

  • SSDEEP

    12288:VuBSP/amCoBJSpc/aaT9/gur79Yq63kfydqAKTE1qH:sA6oBwy/aI/gK79YH0FAgxH

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 5 IoCs
  • UPX packed file 6 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 14 IoCs
  • Adds Run key to start application 2 TTPs 9 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd1bbc33b4161303c72b30c2ea2728437fb23dadf584d134ada046d35c53f1ad.exe
    "C:\Users\Admin\AppData\Local\Temp\fd1bbc33b4161303c72b30c2ea2728437fb23dadf584d134ada046d35c53f1ad.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Users\Admin\BqjnC0gFVHRul8.exe
      BqjnC0gFVHRul8.exe
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Users\Admin\teaof.exe
        "C:\Users\Admin\teaof.exe"
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:288
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c tasklist&&del BqjnC0gFVHRul8.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1116
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          4⤵
          • Enumerates processes with tasklist
          PID:1100
    • C:\Users\Admin\win.exe
      win.exe
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of AdjustPrivilegeToken
      PID:1712
    • C:\Users\Admin\wio.exe
      wio.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\kesvef.dll",Startup
        3⤵
        • Loads dropped DLL
        • Adds Run key to start application
        PID:916
    • C:\Users\Admin\wiq.exe
      wiq.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Windows\system32\svchost.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:904
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c del fd1bbc33b4161303c72b30c2ea2728437fb23dadf584d134ada046d35c53f1ad.exe
      2⤵
      • Deletes itself
      PID:828

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\kesvef.dll

          Filesize

          103KB

          MD5

          19f8a2d4e8270baf8bd5a6086f565e70

          SHA1

          b5a05abe09066906b569f0fadefb00fb567ef547

          SHA256

          2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

          SHA512

          8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

        • C:\Users\Admin\BqjnC0gFVHRul8.exe

          Filesize

          148KB

          MD5

          fc8e30e732d9e1483b7d29ea39ad9c15

          SHA1

          04215f820a214d11e1dd9a832ac264605cf98604

          SHA256

          c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

          SHA512

          d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

        • C:\Users\Admin\BqjnC0gFVHRul8.exe

          Filesize

          148KB

          MD5

          fc8e30e732d9e1483b7d29ea39ad9c15

          SHA1

          04215f820a214d11e1dd9a832ac264605cf98604

          SHA256

          c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

          SHA512

          d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

        • C:\Users\Admin\teaof.exe

          Filesize

          148KB

          MD5

          2cbfb98617804ff08ded8f2c39779d88

          SHA1

          96eb87d4f9fc26f609856ded552d3b96329803e3

          SHA256

          f17480735cb52264c05012a5224c25faf22ff62cded1109e79419e88bd706f0d

          SHA512

          d0335dfec76896caf3c7c8ed8933d431ad9d708248b66b0f827eefca048cb267ab1e7a5754bbf05aa1ae3ddc51788b64a3d02d8324cec51cf5f599587f74c239

        • C:\Users\Admin\teaof.exe

          Filesize

          148KB

          MD5

          2cbfb98617804ff08ded8f2c39779d88

          SHA1

          96eb87d4f9fc26f609856ded552d3b96329803e3

          SHA256

          f17480735cb52264c05012a5224c25faf22ff62cded1109e79419e88bd706f0d

          SHA512

          d0335dfec76896caf3c7c8ed8933d431ad9d708248b66b0f827eefca048cb267ab1e7a5754bbf05aa1ae3ddc51788b64a3d02d8324cec51cf5f599587f74c239

        • C:\Users\Admin\win.exe

          Filesize

          172KB

          MD5

          16dfe37b77854e727eabedd05239ebee

          SHA1

          9218bb944834fb46eb2f04858ada0dacdf821d77

          SHA256

          8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

          SHA512

          56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

        • C:\Users\Admin\win.exe

          Filesize

          172KB

          MD5

          16dfe37b77854e727eabedd05239ebee

          SHA1

          9218bb944834fb46eb2f04858ada0dacdf821d77

          SHA256

          8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

          SHA512

          56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

        • C:\Users\Admin\wio.exe

          Filesize

          103KB

          MD5

          f7756f6980dc23ef661085d6cd999831

          SHA1

          cd77f7a9bc8c058023779a531e2deac8c3241638

          SHA256

          53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

          SHA512

          b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

        • C:\Users\Admin\wio.exe

          Filesize

          103KB

          MD5

          f7756f6980dc23ef661085d6cd999831

          SHA1

          cd77f7a9bc8c058023779a531e2deac8c3241638

          SHA256

          53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

          SHA512

          b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

        • C:\Users\Admin\wiq.exe

          Filesize

          52KB

          MD5

          65a849404ffe62e0d2f56d7993f00920

          SHA1

          6401a9e92690172958fbf0ee122990479628e92f

          SHA256

          afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

          SHA512

          99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

        • C:\Users\Admin\wiq.exe

          Filesize

          52KB

          MD5

          65a849404ffe62e0d2f56d7993f00920

          SHA1

          6401a9e92690172958fbf0ee122990479628e92f

          SHA256

          afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

          SHA512

          99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

        • \Users\Admin\AppData\Local\kesvef.dll

          Filesize

          103KB

          MD5

          19f8a2d4e8270baf8bd5a6086f565e70

          SHA1

          b5a05abe09066906b569f0fadefb00fb567ef547

          SHA256

          2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

          SHA512

          8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

        • \Users\Admin\AppData\Local\kesvef.dll

          Filesize

          103KB

          MD5

          19f8a2d4e8270baf8bd5a6086f565e70

          SHA1

          b5a05abe09066906b569f0fadefb00fb567ef547

          SHA256

          2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

          SHA512

          8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

        • \Users\Admin\AppData\Local\kesvef.dll

          Filesize

          103KB

          MD5

          19f8a2d4e8270baf8bd5a6086f565e70

          SHA1

          b5a05abe09066906b569f0fadefb00fb567ef547

          SHA256

          2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

          SHA512

          8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

        • \Users\Admin\AppData\Local\kesvef.dll

          Filesize

          103KB

          MD5

          19f8a2d4e8270baf8bd5a6086f565e70

          SHA1

          b5a05abe09066906b569f0fadefb00fb567ef547

          SHA256

          2f677a22315a327d82514449be56d53cd85a8dd3eef75317231647faac6caf50

          SHA512

          8a5686b22a993f8c38420f9c163e6321eab7a089858da4852160684ccc260d82f21e933365e0f413418849f9af26786d805d0dd6295546b52ae9ab5fcf88ed63

        • \Users\Admin\BqjnC0gFVHRul8.exe

          Filesize

          148KB

          MD5

          fc8e30e732d9e1483b7d29ea39ad9c15

          SHA1

          04215f820a214d11e1dd9a832ac264605cf98604

          SHA256

          c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

          SHA512

          d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

        • \Users\Admin\BqjnC0gFVHRul8.exe

          Filesize

          148KB

          MD5

          fc8e30e732d9e1483b7d29ea39ad9c15

          SHA1

          04215f820a214d11e1dd9a832ac264605cf98604

          SHA256

          c3bb55f793445fe9ca4dbdd55c7dd1d5ec90c807d3270833b3f9678a9a956585

          SHA512

          d56cb22fde3d54cc4d5008857e573e4b8182b4d690c9a9ca9978aca5ed0051001c919588918ac17dd7c3d41c90acca9411d42cf33c10accd12d3d313fb60afd6

        • \Users\Admin\teaof.exe

          Filesize

          148KB

          MD5

          2cbfb98617804ff08ded8f2c39779d88

          SHA1

          96eb87d4f9fc26f609856ded552d3b96329803e3

          SHA256

          f17480735cb52264c05012a5224c25faf22ff62cded1109e79419e88bd706f0d

          SHA512

          d0335dfec76896caf3c7c8ed8933d431ad9d708248b66b0f827eefca048cb267ab1e7a5754bbf05aa1ae3ddc51788b64a3d02d8324cec51cf5f599587f74c239

        • \Users\Admin\teaof.exe

          Filesize

          148KB

          MD5

          2cbfb98617804ff08ded8f2c39779d88

          SHA1

          96eb87d4f9fc26f609856ded552d3b96329803e3

          SHA256

          f17480735cb52264c05012a5224c25faf22ff62cded1109e79419e88bd706f0d

          SHA512

          d0335dfec76896caf3c7c8ed8933d431ad9d708248b66b0f827eefca048cb267ab1e7a5754bbf05aa1ae3ddc51788b64a3d02d8324cec51cf5f599587f74c239

        • \Users\Admin\win.exe

          Filesize

          172KB

          MD5

          16dfe37b77854e727eabedd05239ebee

          SHA1

          9218bb944834fb46eb2f04858ada0dacdf821d77

          SHA256

          8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

          SHA512

          56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

        • \Users\Admin\win.exe

          Filesize

          172KB

          MD5

          16dfe37b77854e727eabedd05239ebee

          SHA1

          9218bb944834fb46eb2f04858ada0dacdf821d77

          SHA256

          8ee33551b06628414ed9003fd0c35ab5abbedf6f85e50c9bfdb99fc72172d267

          SHA512

          56c765b030817f0903dd9ce50aefb3511e30706891f7d9accd7f95c465d1890fdda3ab59238919b59951fe1c361699f80675b6fab9c9df26dd4f22d97b0ca903

        • \Users\Admin\wio.exe

          Filesize

          103KB

          MD5

          f7756f6980dc23ef661085d6cd999831

          SHA1

          cd77f7a9bc8c058023779a531e2deac8c3241638

          SHA256

          53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

          SHA512

          b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

        • \Users\Admin\wio.exe

          Filesize

          103KB

          MD5

          f7756f6980dc23ef661085d6cd999831

          SHA1

          cd77f7a9bc8c058023779a531e2deac8c3241638

          SHA256

          53122fb8bd9b1a304af221e3172c1770f18d20e71f275b98bcfe10cc81ec3740

          SHA512

          b1e51945dea731c962140b9755c2d6b549feb3fb0d9793a0c67fe6a99498dde1a4744931ca80053f723eec221975e26220e7c357188bd0f11f5966bf2cc618df

        • \Users\Admin\wiq.exe

          Filesize

          52KB

          MD5

          65a849404ffe62e0d2f56d7993f00920

          SHA1

          6401a9e92690172958fbf0ee122990479628e92f

          SHA256

          afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

          SHA512

          99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

        • \Users\Admin\wiq.exe

          Filesize

          52KB

          MD5

          65a849404ffe62e0d2f56d7993f00920

          SHA1

          6401a9e92690172958fbf0ee122990479628e92f

          SHA256

          afe7c75a0e8d28d5f068cf3605f9aa10016d37348eab013b6dc487e943110c50

          SHA512

          99af61b924d550ff3d8c52db86991cc40ebd94510982dc69ce99bb975ad8de32c07ea9c7eb28d05e55117b15ab3b57d3d2bfe25c744c8918d63d96ef974d5d38

        • memory/904-90-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-95-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-88-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-87-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-91-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-94-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/904-97-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/916-105-0x0000000010000000-0x000000001001D000-memory.dmp

          Filesize

          116KB

        • memory/916-113-0x0000000000251000-0x000000000025E000-memory.dmp

          Filesize

          52KB

        • memory/1316-76-0x0000000010000000-0x000000001001D000-memory.dmp

          Filesize

          116KB

        • memory/1316-82-0x0000000001DC1000-0x0000000001DCE000-memory.dmp

          Filesize

          52KB

        • memory/1608-59-0x0000000000240000-0x0000000000296000-memory.dmp

          Filesize

          344KB

        • memory/1712-80-0x0000000000400000-0x0000000000456000-memory.dmp

          Filesize

          344KB

        • memory/1712-71-0x0000000075A91000-0x0000000075A93000-memory.dmp

          Filesize

          8KB

        • memory/1712-81-0x0000000001BD0000-0x0000000001C26000-memory.dmp

          Filesize

          344KB

        • memory/1712-74-0x0000000001BD0000-0x0000000001C26000-memory.dmp

          Filesize

          344KB