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Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    19/09/2024, 10:48

General

  • Target

    cbb80c1655c3d48393b462b06f9dc949ba014517432968aa8972beffc715c512N.exe

  • Size

    3.1MB

  • MD5

    c3e7b349ab01f3c8d361aef18d7d99b0

  • SHA1

    75d774e51fd6bd19bb5abb9c96ba54fbb88964c4

  • SHA256

    cbb80c1655c3d48393b462b06f9dc949ba014517432968aa8972beffc715c512

  • SHA512

    74d3c6b34d1edcd46ad98340c67313d03f9e351479df598fc7628ff9607e09af6c801d7387fd5f513c0dc12721a834991fcd6aeb7f0751764cc6dc9e2fd61a21

  • SSDEEP

    12288:DCgvmzFHi0mo5aH0qMzd58g7FWPJQPDHvd:DCgvOHi0mGaH0qSdzFI4V

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 12 IoCs
  • Adds policy Run key to start application 2 TTPs 25 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbb80c1655c3d48393b462b06f9dc949ba014517432968aa8972beffc715c512N.exe
    "C:\Users\Admin\AppData\Local\Temp\cbb80c1655c3d48393b462b06f9dc949ba014517432968aa8972beffc715c512N.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Hijack Execution Flow: Executable Installer File Permissions Weakness
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2308
    • C:\Users\Admin\AppData\Local\Temp\villt.exe
      "C:\Users\Admin\AppData\Local\Temp\villt.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Impair Defenses: Safe Mode Boot
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:2804
    • C:\Users\Admin\AppData\Local\Temp\villt.exe
      "C:\Users\Admin\AppData\Local\Temp\villt.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • System Location Discovery: System Language Discovery
      • System policy modification
      PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    237f703e92b3efedd9159515e935bcf4

    SHA1

    d44f8a8aee7448848f03cf2e6bc5d9f3cefe4c7d

    SHA256

    310bdf0f081a63c794454f735c24917ee53ac872917eefb29f09d75312ca9ba3

    SHA512

    32c1fba02cfde530265b88f115404bbb579f852ecf7c5a52d473ed1a384a302b4c431464de5d676399b15504723a77f0b9ec9ffe43ae93f0a50cd1793889140a

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    f5aa901f394763f32b8157f797d03a18

    SHA1

    5b0c1165ec725425091c234f8eff037498653cd3

    SHA256

    4a03ebb5880b2920acb0c1627191dd15b1d29d704254a38fdb8664e1ba16b4d9

    SHA512

    608f748bf787fcacc71ab90a834c8f02c14eefe3e8972e3a1a7c9624664c1bd2bbcaabd997a36de1c1372a7d443a75bc673667ec11d2a3d5029591a6eca0b261

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    cc609cdad61ec494ec22c2aecf2de657

    SHA1

    8e14b0ef009a453f62ab47767f0513742c893981

    SHA256

    f2f71dd9b62b588b3d55664994765882330f70e242f7d60eb4fe6c322090b5ce

    SHA512

    c999919bda0e20d6f46354fb32f8f5362ab51dcbfdb7bc913a77ebc64f545b0d7ed11e07e126b040e39ab84145b1567d568cd22e89a6c009e8731acf841acb07

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    9dedc97ebfed243e325580c7ed4d2764

    SHA1

    a2856c658101a3c677affd18fe931501543bade7

    SHA256

    0d388db8e1fd1976635ca471d4339acc11f3d7bce40473b5ef0782bbad93dfc7

    SHA512

    6e7c8411e6110a031e2761f4b54f70246d214753b56dabef8a82cf7203a48ab33ac6f7fe63fafb9204dd09782f0f878fe10a01ad450a935ad765b5cd6128a13d

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    e76ae2afb8f0f25a4b162293b5fdf402

    SHA1

    3d02ac2523ae9ceb52eaf34c4d47631ab1fe2e35

    SHA256

    5528daa9a3ed249c6d51a611eae9f38085f8153f12fe6430bde3be19a6287347

    SHA512

    5bd21266a253fa6e87891a2983dd46b1bdb3e881d4ac7d3e53219e9562fe1c78c9d89e95da38a9db7ba58a67418c9b5ff9cd5ae802127f0d4453ede84edd5295

  • C:\Program Files (x86)\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    b83af3e2170a9220bfc288af228a7e29

    SHA1

    e48b4237b7aba82e8edf9e95ff48d999051baee5

    SHA256

    4851c07a3f49f1e1dd7c0bbf18174f621873b70e0e3c2780aa2cd0d7cf605cd7

    SHA512

    2f3faf637d97cf06b76e5bbc576623fd94d8d7736247565c791908ccea1403057af96200fc9f7f1913ea40e094cacf410b4d31b83acc3f0fbb1eb3c47e1e3f76

  • C:\Users\Admin\AppData\Local\Temp\villt.exe

    Filesize

    4.3MB

    MD5

    27316e5468633b30653a68355e0ca650

    SHA1

    db7a1360c8a8933f05773fe2e1bb2ae265318dce

    SHA256

    5793002022109a6d5f3adf975a1ee9d394b377bc9ac84b59985291d7f5c07836

    SHA512

    865dc31b7c8f6d8f51c4512a5d06d70115d9a134dbf8c7bfe84d4cd8eb36481470d08f3d0f3461f7cc5adcd926306396a5a2679ef8b42660134007081d87bc87

  • C:\Users\Admin\AppData\Local\sksxkzbqckmpysrqagyglynpeqyadmgf.oum

    Filesize

    4KB

    MD5

    25313c37fbf9b0813b98ffe80e2d88e6

    SHA1

    033d6d2d3840580b7355618d6a8f93d8246cd3d6

    SHA256

    8e9c3f1bc0fd6941e914cd060a96c7303cfe1328ec9eeae2f92f6883ee1f4a96

    SHA512

    2ae3cef8b404ee38d55d9c24f98d0099a07d8b5ee0e0992f972e86b73dc7a28aad91facfba35fc3bcc388588f2cb666f04f7ec3731b0f86529f9ab3a3a42ddfa

  • C:\Users\Admin\AppData\Local\xebvxbswxuldbkymlgnke.kbf

    Filesize

    280B

    MD5

    1f92e70d000ac719fc026a7579f8af77

    SHA1

    33ff3fd0a913041e731bd1d0a1bb68ff957d02d0

    SHA256

    031e54a9d12e30821b9f26c2c0fa4e115d21527a756a76aa50ca1ad5cb62fa2b

    SHA512

    2689c648fbc04b761f58c8ebb4dbf1553ca28a8cdade1d048fb2e60a949cc04b1f78aaa65e5ce7dfa942e16bd20b856b59de3259d78f901d2712fa4e8604fec4