Analysis

  • max time kernel
    72s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-10-2022 19:15

General

  • Target

    7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff.exe

  • Size

    456KB

  • MD5

    a39db38a3a96c560a46b1a52ca1214a3

  • SHA1

    0d1df40a164400c3a3ad578794ac23f60cd3ec44

  • SHA256

    7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff

  • SHA512

    c4a9fc329a292285502e9083fabd46000065197b51598109b461afc16d03b4f149af92fa9024397cf33cb5773757414904cbb25902e363a7973e3e66b1d8a49b

  • SSDEEP

    12288:jEVXKpmokOif4JgTIoq43H2cE05nMx11DGkfb7i:jEtRGiAJgMe3H2cJCx1YOb7i

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 43 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 2 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff.exe
    "C:\Users\Admin\AppData\Local\Temp\7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4812
    • C:\Users\Admin\AppData\Local\Temp\7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff.exe
      7ec3fdb7a8e1dd80fc18516566a5ba5fbcad7eba9985054834049d1efba902ff.exe
      2⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4868
      • C:\Users\Admin\iAsD8zgo9sJlU4T4lK.exe
        C:\Users\Admin\iAsD8zgo9sJlU4T4lK.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Checks computer location settings
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Users\Admin\ntyoj.exe
          "C:\Users\Admin\ntyoj.exe"
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:2320
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c tasklist&&del iAsD8zgo9sJlU4T4lK.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4704
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            5⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:3560
      • C:\Users\Admin\txhost.exe
        C:\Users\Admin\txhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4880
        • C:\Users\Admin\txhost.exe
          txhost.exe
          4⤵
          • Executes dropped EXE
          PID:3208
      • C:\Users\Admin\uxhost.exe
        C:\Users\Admin\uxhost.exe
        3⤵
        • Executes dropped EXE
        • Writes to the Master Boot Record (MBR)
        • Suspicious use of AdjustPrivilegeToken
        PID:2008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\iAsD8zgo9sJlU4T4lK.exe

    Filesize

    156KB

    MD5

    c1ca4a842399156d6ce56df9fe167158

    SHA1

    c24482b800d11e8f0238df3d950b745f38c245e7

    SHA256

    197d8be66fca12a1c137e920a49610b38f29756c7b7473ec1962c6499918f15a

    SHA512

    a89f3170db1de6f296b12c42059495821ef6e9b03a8e3e58aafcfa5cfab8cc0f996e5498476f638a80f604a2c2d6b7d626bd621b35b0c4502b6916aa1380e1c9

  • C:\Users\Admin\iAsD8zgo9sJlU4T4lK.exe

    Filesize

    156KB

    MD5

    c1ca4a842399156d6ce56df9fe167158

    SHA1

    c24482b800d11e8f0238df3d950b745f38c245e7

    SHA256

    197d8be66fca12a1c137e920a49610b38f29756c7b7473ec1962c6499918f15a

    SHA512

    a89f3170db1de6f296b12c42059495821ef6e9b03a8e3e58aafcfa5cfab8cc0f996e5498476f638a80f604a2c2d6b7d626bd621b35b0c4502b6916aa1380e1c9

  • C:\Users\Admin\ntyoj.exe

    Filesize

    156KB

    MD5

    61a3032002ba70838c6af07dee6df7e7

    SHA1

    4da667d259d32ee9bb12ffc67268b73a4e460910

    SHA256

    9df850eb979f07b3268d337abbe805ef2a31aa566ca22081f5edbb75e31535df

    SHA512

    4bf87869cc669aef29a282ec0c9ec24683d185989025d24ac3ba3dd8fccf09129aa9a26fb597a0a9681f432ec48ae3532dcc484511ddf9a019e784b612804ec9

  • C:\Users\Admin\ntyoj.exe

    Filesize

    156KB

    MD5

    61a3032002ba70838c6af07dee6df7e7

    SHA1

    4da667d259d32ee9bb12ffc67268b73a4e460910

    SHA256

    9df850eb979f07b3268d337abbe805ef2a31aa566ca22081f5edbb75e31535df

    SHA512

    4bf87869cc669aef29a282ec0c9ec24683d185989025d24ac3ba3dd8fccf09129aa9a26fb597a0a9681f432ec48ae3532dcc484511ddf9a019e784b612804ec9

  • C:\Users\Admin\txhost.exe

    Filesize

    146KB

    MD5

    18c83c689100e66caedb1c76ed87bd95

    SHA1

    901c0f6c4757d37d5a2e357704344aeb31a9cadb

    SHA256

    37d78483538af016b7646678df08893badea86d7b5f4317b99393bbcd3c172b9

    SHA512

    e87c6aeaa1cc7a69f390c57d4cbcc1efa3cb5349a445831f822f7843b3a3d850f9793818d4e1e7fe011a5af0e99bbdb7cf8a5ec13541dedb8431fc47ef9f33b1

  • C:\Users\Admin\txhost.exe

    Filesize

    146KB

    MD5

    18c83c689100e66caedb1c76ed87bd95

    SHA1

    901c0f6c4757d37d5a2e357704344aeb31a9cadb

    SHA256

    37d78483538af016b7646678df08893badea86d7b5f4317b99393bbcd3c172b9

    SHA512

    e87c6aeaa1cc7a69f390c57d4cbcc1efa3cb5349a445831f822f7843b3a3d850f9793818d4e1e7fe011a5af0e99bbdb7cf8a5ec13541dedb8431fc47ef9f33b1

  • C:\Users\Admin\txhost.exe

    Filesize

    146KB

    MD5

    18c83c689100e66caedb1c76ed87bd95

    SHA1

    901c0f6c4757d37d5a2e357704344aeb31a9cadb

    SHA256

    37d78483538af016b7646678df08893badea86d7b5f4317b99393bbcd3c172b9

    SHA512

    e87c6aeaa1cc7a69f390c57d4cbcc1efa3cb5349a445831f822f7843b3a3d850f9793818d4e1e7fe011a5af0e99bbdb7cf8a5ec13541dedb8431fc47ef9f33b1

  • C:\Users\Admin\uxhost.exe

    Filesize

    219KB

    MD5

    861e3902ecc188eba323032a88d1e56e

    SHA1

    6c6265be666d9c93acd6ddc55e94a9de8580191c

    SHA256

    79ae1f344b550f57a9f03ec18894df1b9b255b865b5872801d0f043c1b77eb84

    SHA512

    044f284dd78b7aad2f733628c901d7bd1067436d76c4b3fad3bf024f8faecaaf38e453053431daf7afa8c8b14f5eea6fe4f75148b8923ac2441f966ac118cec4

  • C:\Users\Admin\uxhost.exe

    Filesize

    219KB

    MD5

    861e3902ecc188eba323032a88d1e56e

    SHA1

    6c6265be666d9c93acd6ddc55e94a9de8580191c

    SHA256

    79ae1f344b550f57a9f03ec18894df1b9b255b865b5872801d0f043c1b77eb84

    SHA512

    044f284dd78b7aad2f733628c901d7bd1067436d76c4b3fad3bf024f8faecaaf38e453053431daf7afa8c8b14f5eea6fe4f75148b8923ac2441f966ac118cec4

  • memory/2008-159-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2008-158-0x0000000002470000-0x00000000024D4000-memory.dmp

    Filesize

    400KB

  • memory/2008-160-0x0000000002470000-0x00000000024D4000-memory.dmp

    Filesize

    400KB

  • memory/3208-163-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3208-169-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3208-166-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3208-165-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3208-164-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3208-162-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4868-135-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB

  • memory/4868-137-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB

  • memory/4868-133-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB