Analysis

  • max time kernel
    153s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 18:42

General

  • Target

    83d66a582810bc00186c280c5925a41acfa4ab4d85f4994ba83306c4d906ba24.exe

  • Size

    255KB

  • MD5

    435ca4708c1be08135062752959b4480

  • SHA1

    183383d79e64d87369995979233d8dec0993d998

  • SHA256

    83d66a582810bc00186c280c5925a41acfa4ab4d85f4994ba83306c4d906ba24

  • SHA512

    74fe55fe4538da0673502a1db05c8163f098f335b9481399a357c2a59c767b9a92da0cd6e2d1ec6c48d781aaa25cc127d5cd7927a169b0e40cc7c725a1f472f6

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJN:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIW

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • UPX packed file 37 IoCs

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

  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 15 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 61 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\83d66a582810bc00186c280c5925a41acfa4ab4d85f4994ba83306c4d906ba24.exe
    "C:\Users\Admin\AppData\Local\Temp\83d66a582810bc00186c280c5925a41acfa4ab4d85f4994ba83306c4d906ba24.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\SysWOW64\mnybnbcrhr.exe
      mnybnbcrhr.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SysWOW64\yyegwmjx.exe
        C:\Windows\system32\yyegwmjx.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:1632
    • C:\Windows\SysWOW64\xezmxdntqowjhit.exe
      xezmxdntqowjhit.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c azaxdlzlcipeb.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:680
        • C:\Windows\SysWOW64\azaxdlzlcipeb.exe
          azaxdlzlcipeb.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          PID:1356
    • C:\Windows\SysWOW64\yyegwmjx.exe
      yyegwmjx.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:764
    • C:\Windows\SysWOW64\azaxdlzlcipeb.exe
      azaxdlzlcipeb.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1168
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:692
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:2008
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1720
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x584
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1660

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.DOC.exe

      Filesize

      255KB

      MD5

      951ede79d57b28181263215cdf447b2d

      SHA1

      a9a6a7bed64f05e7abd8f1ea12cc98f85066402f

      SHA256

      937cd0f35c4c7e00b4b7905d6dfa856ce9c85553bbe437969a0393af5b8b61e0

      SHA512

      0321fa8d1e89e51e6ef4fae844fbcc1e79dffd748eeab5a78ac8424aa0a51888404cab40733b5264f01773da2554b12582c0c45758bb9ac2d0e4f455c42c8f88

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      255KB

      MD5

      6a2022cf23d1a56171ec4efd41540994

      SHA1

      5dcdaad862b77aa48354058de68873e39f4600f2

      SHA256

      8e45935b9133d026312e120f67237b7802c236302f3d79d908764676beceb0dc

      SHA512

      083962075763c7b90d8d228dddf8819be207dab19022e856c4e46240e19843449b07914081d9fadec7bd0ac2b5caa7c3c795d3e7c201f175070fac1264fc9171

    • C:\Users\Admin\AppData\Roaming\ReceiveStart.doc.exe

      Filesize

      255KB

      MD5

      d3edef083f6edb99a9c2c21dbb8045b4

      SHA1

      6e18e47b7e0d79ec360610c82abd0bbbad7c24a7

      SHA256

      f140a26095ce57931cb42c71d3ac213d2eb95d2bbdbe7c903f706a1fe52caa01

      SHA512

      32643ca83d2dff8a125eb8a63f7102fadba57cce947d9117ccfdda2cb3977c49d45eb685929e303f85a453aa1ad7487eebcb1d85562c110f2e9669f4f8661528

    • C:\Users\Admin\AppData\Roaming\ReceiveStart.doc.exe

      Filesize

      255KB

      MD5

      d3edef083f6edb99a9c2c21dbb8045b4

      SHA1

      6e18e47b7e0d79ec360610c82abd0bbbad7c24a7

      SHA256

      f140a26095ce57931cb42c71d3ac213d2eb95d2bbdbe7c903f706a1fe52caa01

      SHA512

      32643ca83d2dff8a125eb8a63f7102fadba57cce947d9117ccfdda2cb3977c49d45eb685929e303f85a453aa1ad7487eebcb1d85562c110f2e9669f4f8661528

    • C:\Users\Admin\Music\RepairAssert.doc.exe

      Filesize

      255KB

      MD5

      2027d021209d2820b0753751687fb74d

      SHA1

      7823f9ad3040d441659b3724990d2158a91481da

      SHA256

      29c1ee00325eb6992b4a1072eb3c048682660b817fa51c042cc90d03ff0c3368

      SHA512

      4b735951b44bf84edbd64d9fd77c6f5515769bba5124f9a21f37a0740dd96b58f35c92cb108c704041b17513ca72d8789402624679dede59832d197dec02ffee

    • C:\Windows\SysWOW64\azaxdlzlcipeb.exe

      Filesize

      255KB

      MD5

      a84f3eb7a5e79d6a0c492ef40147bed5

      SHA1

      31f5e3a69cb97c26da8ee3b6344dd42e464cd992

      SHA256

      75316b2bb31463c9f6bd58eaca7d4403d2cda22eaaeae95feac7d684ca84be1f

      SHA512

      9fc6c3384c05d538e463c97ac86c6ed5900355a3ce385413d78841d3e95d6af95a77708ee72fef25cfdc8e89bda9a7208bcb75abf09ebf4feac9c23be685d50f

    • C:\Windows\SysWOW64\azaxdlzlcipeb.exe

      Filesize

      255KB

      MD5

      a84f3eb7a5e79d6a0c492ef40147bed5

      SHA1

      31f5e3a69cb97c26da8ee3b6344dd42e464cd992

      SHA256

      75316b2bb31463c9f6bd58eaca7d4403d2cda22eaaeae95feac7d684ca84be1f

      SHA512

      9fc6c3384c05d538e463c97ac86c6ed5900355a3ce385413d78841d3e95d6af95a77708ee72fef25cfdc8e89bda9a7208bcb75abf09ebf4feac9c23be685d50f

    • C:\Windows\SysWOW64\azaxdlzlcipeb.exe

      Filesize

      255KB

      MD5

      a84f3eb7a5e79d6a0c492ef40147bed5

      SHA1

      31f5e3a69cb97c26da8ee3b6344dd42e464cd992

      SHA256

      75316b2bb31463c9f6bd58eaca7d4403d2cda22eaaeae95feac7d684ca84be1f

      SHA512

      9fc6c3384c05d538e463c97ac86c6ed5900355a3ce385413d78841d3e95d6af95a77708ee72fef25cfdc8e89bda9a7208bcb75abf09ebf4feac9c23be685d50f

    • C:\Windows\SysWOW64\mnybnbcrhr.exe

      Filesize

      255KB

      MD5

      5fb621981f31d0f8af90fb7b50784573

      SHA1

      dcd97e574f572f4e7d4cf277832037a0e525b05a

      SHA256

      b4244371f96e6bff9fd8bb915c0677740015a375e12800fc2b85ff48a11ca00e

      SHA512

      bc11caa9ade28b97e806c32198915aba7b4014fc8f28a92ab3a0ac17dce906a298eba0c8ab6aaec2f458a3dc849915d70af0ef28ec1a4ac81b5da9e4f6004dbb

    • C:\Windows\SysWOW64\mnybnbcrhr.exe

      Filesize

      255KB

      MD5

      5fb621981f31d0f8af90fb7b50784573

      SHA1

      dcd97e574f572f4e7d4cf277832037a0e525b05a

      SHA256

      b4244371f96e6bff9fd8bb915c0677740015a375e12800fc2b85ff48a11ca00e

      SHA512

      bc11caa9ade28b97e806c32198915aba7b4014fc8f28a92ab3a0ac17dce906a298eba0c8ab6aaec2f458a3dc849915d70af0ef28ec1a4ac81b5da9e4f6004dbb

    • C:\Windows\SysWOW64\xezmxdntqowjhit.exe

      Filesize

      255KB

      MD5

      71e0f8f4d0dbb7517a6e3020aa1479ea

      SHA1

      3bb7e43c65d4bdb1e512f903d6bcf3b5cff54a58

      SHA256

      314228bff51ccde3b64d4c999a03508c5a35987396bee5ed13bac78dfd0a491b

      SHA512

      965e89dc7e2e0b44e511dea43d5fde9873f47d901b362883dcb8896bb380d597469a6f3c6dae45636c2e3e4918d43f319bb0673a5e979c13bff5b87745bca5be

    • C:\Windows\SysWOW64\xezmxdntqowjhit.exe

      Filesize

      255KB

      MD5

      71e0f8f4d0dbb7517a6e3020aa1479ea

      SHA1

      3bb7e43c65d4bdb1e512f903d6bcf3b5cff54a58

      SHA256

      314228bff51ccde3b64d4c999a03508c5a35987396bee5ed13bac78dfd0a491b

      SHA512

      965e89dc7e2e0b44e511dea43d5fde9873f47d901b362883dcb8896bb380d597469a6f3c6dae45636c2e3e4918d43f319bb0673a5e979c13bff5b87745bca5be

    • C:\Windows\SysWOW64\yyegwmjx.exe

      Filesize

      255KB

      MD5

      e2939738e5f191e02c8c7404198a2588

      SHA1

      35ec73fbb014f53127ca118711f37c28f77eccbf

      SHA256

      ee659f17b476b1d035415ad809c4450476f86a2ab514925eddb76f257d9ea02c

      SHA512

      d1a0f7b8af8ae1fcbcbd288a0dc734933911ca7eda62dbe0274aa094ae2d441c925a4da6a6e1d11c47e290462f042c6e1b32b48f89c56ded4e1dc3fc4d0c8c63

    • C:\Windows\SysWOW64\yyegwmjx.exe

      Filesize

      255KB

      MD5

      e2939738e5f191e02c8c7404198a2588

      SHA1

      35ec73fbb014f53127ca118711f37c28f77eccbf

      SHA256

      ee659f17b476b1d035415ad809c4450476f86a2ab514925eddb76f257d9ea02c

      SHA512

      d1a0f7b8af8ae1fcbcbd288a0dc734933911ca7eda62dbe0274aa094ae2d441c925a4da6a6e1d11c47e290462f042c6e1b32b48f89c56ded4e1dc3fc4d0c8c63

    • C:\Windows\SysWOW64\yyegwmjx.exe

      Filesize

      255KB

      MD5

      e2939738e5f191e02c8c7404198a2588

      SHA1

      35ec73fbb014f53127ca118711f37c28f77eccbf

      SHA256

      ee659f17b476b1d035415ad809c4450476f86a2ab514925eddb76f257d9ea02c

      SHA512

      d1a0f7b8af8ae1fcbcbd288a0dc734933911ca7eda62dbe0274aa094ae2d441c925a4da6a6e1d11c47e290462f042c6e1b32b48f89c56ded4e1dc3fc4d0c8c63

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \??\c:\Users\Admin\Music\RepairAssert.doc.exe

      Filesize

      255KB

      MD5

      2027d021209d2820b0753751687fb74d

      SHA1

      7823f9ad3040d441659b3724990d2158a91481da

      SHA256

      29c1ee00325eb6992b4a1072eb3c048682660b817fa51c042cc90d03ff0c3368

      SHA512

      4b735951b44bf84edbd64d9fd77c6f5515769bba5124f9a21f37a0740dd96b58f35c92cb108c704041b17513ca72d8789402624679dede59832d197dec02ffee

    • \Windows\SysWOW64\azaxdlzlcipeb.exe

      Filesize

      255KB

      MD5

      a84f3eb7a5e79d6a0c492ef40147bed5

      SHA1

      31f5e3a69cb97c26da8ee3b6344dd42e464cd992

      SHA256

      75316b2bb31463c9f6bd58eaca7d4403d2cda22eaaeae95feac7d684ca84be1f

      SHA512

      9fc6c3384c05d538e463c97ac86c6ed5900355a3ce385413d78841d3e95d6af95a77708ee72fef25cfdc8e89bda9a7208bcb75abf09ebf4feac9c23be685d50f

    • \Windows\SysWOW64\azaxdlzlcipeb.exe

      Filesize

      255KB

      MD5

      a84f3eb7a5e79d6a0c492ef40147bed5

      SHA1

      31f5e3a69cb97c26da8ee3b6344dd42e464cd992

      SHA256

      75316b2bb31463c9f6bd58eaca7d4403d2cda22eaaeae95feac7d684ca84be1f

      SHA512

      9fc6c3384c05d538e463c97ac86c6ed5900355a3ce385413d78841d3e95d6af95a77708ee72fef25cfdc8e89bda9a7208bcb75abf09ebf4feac9c23be685d50f

    • \Windows\SysWOW64\mnybnbcrhr.exe

      Filesize

      255KB

      MD5

      5fb621981f31d0f8af90fb7b50784573

      SHA1

      dcd97e574f572f4e7d4cf277832037a0e525b05a

      SHA256

      b4244371f96e6bff9fd8bb915c0677740015a375e12800fc2b85ff48a11ca00e

      SHA512

      bc11caa9ade28b97e806c32198915aba7b4014fc8f28a92ab3a0ac17dce906a298eba0c8ab6aaec2f458a3dc849915d70af0ef28ec1a4ac81b5da9e4f6004dbb

    • \Windows\SysWOW64\xezmxdntqowjhit.exe

      Filesize

      255KB

      MD5

      71e0f8f4d0dbb7517a6e3020aa1479ea

      SHA1

      3bb7e43c65d4bdb1e512f903d6bcf3b5cff54a58

      SHA256

      314228bff51ccde3b64d4c999a03508c5a35987396bee5ed13bac78dfd0a491b

      SHA512

      965e89dc7e2e0b44e511dea43d5fde9873f47d901b362883dcb8896bb380d597469a6f3c6dae45636c2e3e4918d43f319bb0673a5e979c13bff5b87745bca5be

    • \Windows\SysWOW64\yyegwmjx.exe

      Filesize

      255KB

      MD5

      e2939738e5f191e02c8c7404198a2588

      SHA1

      35ec73fbb014f53127ca118711f37c28f77eccbf

      SHA256

      ee659f17b476b1d035415ad809c4450476f86a2ab514925eddb76f257d9ea02c

      SHA512

      d1a0f7b8af8ae1fcbcbd288a0dc734933911ca7eda62dbe0274aa094ae2d441c925a4da6a6e1d11c47e290462f042c6e1b32b48f89c56ded4e1dc3fc4d0c8c63

    • \Windows\SysWOW64\yyegwmjx.exe

      Filesize

      255KB

      MD5

      e2939738e5f191e02c8c7404198a2588

      SHA1

      35ec73fbb014f53127ca118711f37c28f77eccbf

      SHA256

      ee659f17b476b1d035415ad809c4450476f86a2ab514925eddb76f257d9ea02c

      SHA512

      d1a0f7b8af8ae1fcbcbd288a0dc734933911ca7eda62dbe0274aa094ae2d441c925a4da6a6e1d11c47e290462f042c6e1b32b48f89c56ded4e1dc3fc4d0c8c63

    • memory/364-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/364-95-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/364-62-0x0000000000000000-mapping.dmp

    • memory/680-71-0x0000000000000000-mapping.dmp

    • memory/692-104-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/692-110-0x000000007166D000-0x0000000071678000-memory.dmp

      Filesize

      44KB

    • memory/692-100-0x0000000000000000-mapping.dmp

    • memory/692-102-0x0000000072C01000-0x0000000072C04000-memory.dmp

      Filesize

      12KB

    • memory/692-103-0x0000000070681000-0x0000000070683000-memory.dmp

      Filesize

      8KB

    • memory/692-106-0x000000007166D000-0x0000000071678000-memory.dmp

      Filesize

      44KB

    • memory/764-67-0x0000000000000000-mapping.dmp

    • memory/764-88-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/764-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1168-89-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1168-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1168-73-0x0000000000000000-mapping.dmp

    • memory/1356-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1356-78-0x0000000000000000-mapping.dmp

    • memory/1356-90-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1632-91-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1632-82-0x0000000000000000-mapping.dmp

    • memory/1632-99-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1720-92-0x000007FEFBC51000-0x000007FEFBC53000-memory.dmp

      Filesize

      8KB

    • memory/1984-85-0x0000000003380000-0x0000000003420000-memory.dmp

      Filesize

      640KB

    • memory/1984-93-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1984-54-0x0000000075631000-0x0000000075633000-memory.dmp

      Filesize

      8KB

    • memory/1984-101-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1984-55-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1992-86-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1992-94-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1992-57-0x0000000000000000-mapping.dmp

    • memory/2008-111-0x0000000000000000-mapping.dmp