Analysis

  • max time kernel
    247s
  • max time network
    337s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 21:03

General

  • Target

    7409499c45e353cfeb3857647a336159d9d2e25591eb21d86bcf2c19a6e70528.exe

  • Size

    255KB

  • MD5

    0118fafb572f326409e0a7c487ede3ae

  • SHA1

    59454507736c67fc557bfcb89802c5b407f5c604

  • SHA256

    7409499c45e353cfeb3857647a336159d9d2e25591eb21d86bcf2c19a6e70528

  • SHA512

    70cfbaeaf7fd4ae5be1bfe24e91959f36eb49e4354e243484e8a50d356b33c730cf07a13ecc976578ec8d4f19af73315f92ccc154881fd5e4728fda601aa8924

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJs:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI/

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 5 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • UPX packed file 28 IoCs

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

  • Loads dropped DLL 5 IoCs
  • 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 13 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Windows directory 4 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 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of FindShellTrayWindow 59 IoCs
  • Suspicious use of SendNotifyMessage 38 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7409499c45e353cfeb3857647a336159d9d2e25591eb21d86bcf2c19a6e70528.exe
    "C:\Users\Admin\AppData\Local\Temp\7409499c45e353cfeb3857647a336159d9d2e25591eb21d86bcf2c19a6e70528.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:1372
    • C:\Windows\SysWOW64\ivydmkkbpk.exe
      ivydmkkbpk.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:1856
      • C:\Windows\SysWOW64\gamikthk.exe
        C:\Windows\system32\gamikthk.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:1320
    • C:\Windows\SysWOW64\rgytjkyaxdbvr.exe
      rgytjkyaxdbvr.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:776
    • C:\Windows\SysWOW64\gamikthk.exe
      gamikthk.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1280
    • C:\Windows\SysWOW64\jsxtaycnpawaoqp.exe
      jsxtaycnpawaoqp.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:912
    • 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:1944
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1696
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:436
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x550
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1300

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\gamikthk.exe

      Filesize

      255KB

      MD5

      6745104a140a8f16e306f429f2fa57cf

      SHA1

      dba8b408bedd6ee00e674d64d8a09ee23d5cb310

      SHA256

      729bf24fe670c5f3b4b022bd1e7b0ac2733cf85e7c777279ba2a85bdf7b91591

      SHA512

      bf4e806b0afb34458704ce75558375a9233166fa12b9d7b11641fc874c0b7865d9ab53c0092f815d82efeed851eb7789aa87be5293aabd0eac3c026c95f6f1c1

    • C:\Windows\SysWOW64\gamikthk.exe

      Filesize

      255KB

      MD5

      6745104a140a8f16e306f429f2fa57cf

      SHA1

      dba8b408bedd6ee00e674d64d8a09ee23d5cb310

      SHA256

      729bf24fe670c5f3b4b022bd1e7b0ac2733cf85e7c777279ba2a85bdf7b91591

      SHA512

      bf4e806b0afb34458704ce75558375a9233166fa12b9d7b11641fc874c0b7865d9ab53c0092f815d82efeed851eb7789aa87be5293aabd0eac3c026c95f6f1c1

    • C:\Windows\SysWOW64\gamikthk.exe

      Filesize

      255KB

      MD5

      6745104a140a8f16e306f429f2fa57cf

      SHA1

      dba8b408bedd6ee00e674d64d8a09ee23d5cb310

      SHA256

      729bf24fe670c5f3b4b022bd1e7b0ac2733cf85e7c777279ba2a85bdf7b91591

      SHA512

      bf4e806b0afb34458704ce75558375a9233166fa12b9d7b11641fc874c0b7865d9ab53c0092f815d82efeed851eb7789aa87be5293aabd0eac3c026c95f6f1c1

    • C:\Windows\SysWOW64\ivydmkkbpk.exe

      Filesize

      255KB

      MD5

      b3c97d418eb8493184f6b702f69ca9a9

      SHA1

      9556fe973448b71987fccb16c5a66ff45bd09232

      SHA256

      eacf480ad5ed60befc39d629ddcd848faf2e32cbed363e1f414b239da9d69601

      SHA512

      84463e58fe0e969122843c7fae9b97801e3639b7e633ccef46e7f69b7f15643e8e822619b16b6457132cfd45edea27716f93e219e17313e650d42b108da3efae

    • C:\Windows\SysWOW64\ivydmkkbpk.exe

      Filesize

      255KB

      MD5

      b3c97d418eb8493184f6b702f69ca9a9

      SHA1

      9556fe973448b71987fccb16c5a66ff45bd09232

      SHA256

      eacf480ad5ed60befc39d629ddcd848faf2e32cbed363e1f414b239da9d69601

      SHA512

      84463e58fe0e969122843c7fae9b97801e3639b7e633ccef46e7f69b7f15643e8e822619b16b6457132cfd45edea27716f93e219e17313e650d42b108da3efae

    • C:\Windows\SysWOW64\jsxtaycnpawaoqp.exe

      Filesize

      255KB

      MD5

      77be3dcdf9d1e5dc12ed5b4490a6178a

      SHA1

      e65c0c75cce9ee06b6e33ee5761aafec037edf87

      SHA256

      680ec3c1e71aff8770af5636b1cebb2dd561cc7dd719a3b4b5f446f4f554fc6d

      SHA512

      9c47b4cd1265aa0844c478fa73bef8d3f0018fe9e575ea5134658e33dbfa1af4888dc9ea2aa411054079806e09a9bc74739112e98c76798a2cec2c4308e58ccb

    • C:\Windows\SysWOW64\jsxtaycnpawaoqp.exe

      Filesize

      255KB

      MD5

      77be3dcdf9d1e5dc12ed5b4490a6178a

      SHA1

      e65c0c75cce9ee06b6e33ee5761aafec037edf87

      SHA256

      680ec3c1e71aff8770af5636b1cebb2dd561cc7dd719a3b4b5f446f4f554fc6d

      SHA512

      9c47b4cd1265aa0844c478fa73bef8d3f0018fe9e575ea5134658e33dbfa1af4888dc9ea2aa411054079806e09a9bc74739112e98c76798a2cec2c4308e58ccb

    • C:\Windows\SysWOW64\rgytjkyaxdbvr.exe

      Filesize

      255KB

      MD5

      46f7172ad5caae5d653419e5d47f99a0

      SHA1

      b2c188c010be20bcf33321aea61d9c9e3d2801cf

      SHA256

      b048bab1e239ee3e7372733ec871aa082eb1cb5f832787577b0c824e435ffd9e

      SHA512

      2b672176fbdd244459b3b4b0dd868c934d4d00f61c2e11e424a07879a648be0deca2c1dee1749ab67b19635f5bf9ed554a6d5aa47b64692c918c96659de7b79e

    • C:\Windows\SysWOW64\rgytjkyaxdbvr.exe

      Filesize

      255KB

      MD5

      46f7172ad5caae5d653419e5d47f99a0

      SHA1

      b2c188c010be20bcf33321aea61d9c9e3d2801cf

      SHA256

      b048bab1e239ee3e7372733ec871aa082eb1cb5f832787577b0c824e435ffd9e

      SHA512

      2b672176fbdd244459b3b4b0dd868c934d4d00f61c2e11e424a07879a648be0deca2c1dee1749ab67b19635f5bf9ed554a6d5aa47b64692c918c96659de7b79e

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\gamikthk.exe

      Filesize

      255KB

      MD5

      6745104a140a8f16e306f429f2fa57cf

      SHA1

      dba8b408bedd6ee00e674d64d8a09ee23d5cb310

      SHA256

      729bf24fe670c5f3b4b022bd1e7b0ac2733cf85e7c777279ba2a85bdf7b91591

      SHA512

      bf4e806b0afb34458704ce75558375a9233166fa12b9d7b11641fc874c0b7865d9ab53c0092f815d82efeed851eb7789aa87be5293aabd0eac3c026c95f6f1c1

    • \Windows\SysWOW64\gamikthk.exe

      Filesize

      255KB

      MD5

      6745104a140a8f16e306f429f2fa57cf

      SHA1

      dba8b408bedd6ee00e674d64d8a09ee23d5cb310

      SHA256

      729bf24fe670c5f3b4b022bd1e7b0ac2733cf85e7c777279ba2a85bdf7b91591

      SHA512

      bf4e806b0afb34458704ce75558375a9233166fa12b9d7b11641fc874c0b7865d9ab53c0092f815d82efeed851eb7789aa87be5293aabd0eac3c026c95f6f1c1

    • \Windows\SysWOW64\ivydmkkbpk.exe

      Filesize

      255KB

      MD5

      b3c97d418eb8493184f6b702f69ca9a9

      SHA1

      9556fe973448b71987fccb16c5a66ff45bd09232

      SHA256

      eacf480ad5ed60befc39d629ddcd848faf2e32cbed363e1f414b239da9d69601

      SHA512

      84463e58fe0e969122843c7fae9b97801e3639b7e633ccef46e7f69b7f15643e8e822619b16b6457132cfd45edea27716f93e219e17313e650d42b108da3efae

    • \Windows\SysWOW64\jsxtaycnpawaoqp.exe

      Filesize

      255KB

      MD5

      77be3dcdf9d1e5dc12ed5b4490a6178a

      SHA1

      e65c0c75cce9ee06b6e33ee5761aafec037edf87

      SHA256

      680ec3c1e71aff8770af5636b1cebb2dd561cc7dd719a3b4b5f446f4f554fc6d

      SHA512

      9c47b4cd1265aa0844c478fa73bef8d3f0018fe9e575ea5134658e33dbfa1af4888dc9ea2aa411054079806e09a9bc74739112e98c76798a2cec2c4308e58ccb

    • \Windows\SysWOW64\rgytjkyaxdbvr.exe

      Filesize

      255KB

      MD5

      46f7172ad5caae5d653419e5d47f99a0

      SHA1

      b2c188c010be20bcf33321aea61d9c9e3d2801cf

      SHA256

      b048bab1e239ee3e7372733ec871aa082eb1cb5f832787577b0c824e435ffd9e

      SHA512

      2b672176fbdd244459b3b4b0dd868c934d4d00f61c2e11e424a07879a648be0deca2c1dee1749ab67b19635f5bf9ed554a6d5aa47b64692c918c96659de7b79e

    • memory/436-87-0x000007FEFB641000-0x000007FEFB643000-memory.dmp

      Filesize

      8KB

    • memory/776-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/776-71-0x0000000000000000-mapping.dmp

    • memory/776-84-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/912-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/912-62-0x0000000000000000-mapping.dmp

    • memory/912-79-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1280-83-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1280-67-0x0000000000000000-mapping.dmp

    • memory/1280-101-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1320-82-0x0000000000000000-mapping.dmp

    • memory/1320-102-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1320-93-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1372-58-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1372-80-0x0000000003460000-0x0000000003500000-memory.dmp

      Filesize

      640KB

    • memory/1372-54-0x0000000075D11000-0x0000000075D13000-memory.dmp

      Filesize

      8KB

    • memory/1372-89-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1372-55-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1372-57-0x0000000003460000-0x0000000003500000-memory.dmp

      Filesize

      640KB

    • memory/1696-104-0x0000000000000000-mapping.dmp

    • memory/1856-59-0x0000000000000000-mapping.dmp

    • memory/1856-92-0x0000000003860000-0x0000000003900000-memory.dmp

      Filesize

      640KB

    • memory/1856-99-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1856-77-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1944-96-0x000000007102D000-0x0000000071038000-memory.dmp

      Filesize

      44KB

    • memory/1944-94-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1944-91-0x0000000070041000-0x0000000070043000-memory.dmp

      Filesize

      8KB

    • memory/1944-90-0x00000000725C1000-0x00000000725C4000-memory.dmp

      Filesize

      12KB

    • memory/1944-88-0x0000000000000000-mapping.dmp

    • memory/1944-103-0x000000007102D000-0x0000000071038000-memory.dmp

      Filesize

      44KB