Analysis

  • max time kernel
    139s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 07:59

General

  • Target

    c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3.exe

  • Size

    456KB

  • MD5

    6d453b6d5aaa736baba122899f964e4a

  • SHA1

    7ecae896b8072b9e2f3d08fcf55e5030adec6232

  • SHA256

    c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3

  • SHA512

    3e9659776cd82fa52f6cfa22ca1c19fc110141e061d02705c5c83a40a4fcee9d454d91eaf03ce2311d6739af3f74391203111aa851e7db49803c70373489324f

  • SSDEEP

    12288:jEVXKpmok5if4JgTIoq43H2cE05nMx11DGkfb7i:jEtRRiAJgMe3H2cJCx1YOb7i

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 49 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3.exe
    "C:\Users\Admin\AppData\Local\Temp\c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Users\Admin\AppData\Local\Temp\c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3.exe
      c1d0c9fa8e9b31c47fa880dbf48e445804c7e2acabc1fda4ed9018527c268ce3.exe
      2⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4324
      • 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:5004
        • C:\Users\Admin\koeveuy.exe
          "C:\Users\Admin\koeveuy.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:4268
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c tasklist&&del iAsD8zgo9sJlU4T4lK.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4956
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            5⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4044
      • C:\Users\Admin\txhost.exe
        C:\Users\Admin\txhost.exe
        3⤵
        • Executes dropped EXE
        PID:748
      • 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:1888
      • C:\Users\Admin\vxhost.exe
        C:\Users\Admin\vxhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:3384

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\koeveuy.exe

    Filesize

    156KB

    MD5

    3c427f2af344a3576088ea7de2c959e0

    SHA1

    d0d81218413ea38e4975a3a1906d9b1c53be52db

    SHA256

    abb84715529d2f00cd8ca556205313d1d3ff6bd3fd19cdc5bdf71cd0bde00e7a

    SHA512

    5e6c16e414bf7cfb431c6833df9e81999c7eb8f82a54fc2868040bc1626e6135739b3e65b37676aea5c45be729eca11b3f5626f8295305c7a9dcbc48d0f9be10

  • C:\Users\Admin\koeveuy.exe

    Filesize

    156KB

    MD5

    3c427f2af344a3576088ea7de2c959e0

    SHA1

    d0d81218413ea38e4975a3a1906d9b1c53be52db

    SHA256

    abb84715529d2f00cd8ca556205313d1d3ff6bd3fd19cdc5bdf71cd0bde00e7a

    SHA512

    5e6c16e414bf7cfb431c6833df9e81999c7eb8f82a54fc2868040bc1626e6135739b3e65b37676aea5c45be729eca11b3f5626f8295305c7a9dcbc48d0f9be10

  • 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

  • C:\Users\Admin\vxhost.exe

    Filesize

    24KB

    MD5

    83521374a9132135d3bb5f44edf87b0c

    SHA1

    8c32ff99d92310b0fe3e618453d929fa9cf15ef2

    SHA256

    4942626858e7a1ea7a2c543f2207eb5bbae4715e328d7b0f2afc396be042c80a

    SHA512

    9ea2599188401d984e71008dcf942bdb47c77c90b157b5ee5387ffb716e14529920aedbf3251d7f20ff69ee7fc5e9955626522abdc2ae6c9391a6ada7478ce7c

  • C:\Users\Admin\vxhost.exe

    Filesize

    24KB

    MD5

    83521374a9132135d3bb5f44edf87b0c

    SHA1

    8c32ff99d92310b0fe3e618453d929fa9cf15ef2

    SHA256

    4942626858e7a1ea7a2c543f2207eb5bbae4715e328d7b0f2afc396be042c80a

    SHA512

    9ea2599188401d984e71008dcf942bdb47c77c90b157b5ee5387ffb716e14529920aedbf3251d7f20ff69ee7fc5e9955626522abdc2ae6c9391a6ada7478ce7c

  • memory/1888-158-0x00000000008C0000-0x0000000000924000-memory.dmp

    Filesize

    400KB

  • memory/1888-160-0x00000000008C0000-0x0000000000924000-memory.dmp

    Filesize

    400KB

  • memory/1888-159-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/4324-137-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB

  • memory/4324-133-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB

  • memory/4324-135-0x0000000000400000-0x000000000048D000-memory.dmp

    Filesize

    564KB