Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 19:25

General

  • Target

    6beb38b23964322e9fcc881ef51e7819.exe

  • Size

    408KB

  • MD5

    6beb38b23964322e9fcc881ef51e7819

  • SHA1

    71277568877c51cbb7a741a21cf96fc2e18d9e18

  • SHA256

    85cfd8c4a34c7552ab58def454a0a286195f0522238406e4ab40e39724194c7a

  • SHA512

    93b9d0ef14d9bf0437936f1c83c3b028e767c9a95287e4d7eaf6d32d123e91cd47dbf15c9f6735378752c4523cba530ca949b7f3b780fe31007886bd612f77df

  • SSDEEP

    12288:4XgvmzFHi0mo5aH0qMzd58+7FksPJQPDHvd:4XgvOHi0mGaH0qSdlFkG4V

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 19 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 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
  • Looks up external IP address via web service 2 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 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\6beb38b23964322e9fcc881ef51e7819.exe
    "C:\Users\Admin\AppData\Local\Temp\6beb38b23964322e9fcc881ef51e7819.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
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1708
    • C:\Users\Admin\AppData\Local\Temp\zbnmr.exe
      "C:\Users\Admin\AppData\Local\Temp\zbnmr.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
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1168
    • C:\Users\Admin\AppData\Local\Temp\zbnmr.exe
      "C:\Users\Admin\AppData\Local\Temp\zbnmr.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
      • System policy modification
      PID:984

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

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

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

  • \Users\Admin\AppData\Local\Temp\zbnmr.exe

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

  • \Users\Admin\AppData\Local\Temp\zbnmr.exe

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

  • \Users\Admin\AppData\Local\Temp\zbnmr.exe

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

  • \Users\Admin\AppData\Local\Temp\zbnmr.exe

    Filesize

    804KB

    MD5

    c274f63a6e75416e1963927dbcbd39c6

    SHA1

    75dbbd9d989b1f7bc5cc255ef4313837e516b270

    SHA256

    a566ec625416299d07a79ee3576db83f19a73ea98d78a27208225517c30bdb1b

    SHA512

    7471050e960bd57fc27dd2e296ea58ba1cdaae421a6a0e4e96edcdda61bc0322dee7395464410e66ad088c18a3a024f542571eeafe4f970e621887fac9cfc335

  • memory/984-62-0x0000000000000000-mapping.dmp

  • memory/984-67-0x0000000074651000-0x0000000074653000-memory.dmp

    Filesize

    8KB

  • memory/984-66-0x0000000074641000-0x0000000074643000-memory.dmp

    Filesize

    8KB

  • memory/984-68-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB

  • memory/984-71-0x0000000074301000-0x0000000074303000-memory.dmp

    Filesize

    8KB

  • memory/984-72-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB

  • memory/984-93-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB

  • memory/1168-57-0x0000000000000000-mapping.dmp

  • memory/1168-92-0x0000000074301000-0x0000000074303000-memory.dmp

    Filesize

    8KB

  • memory/1168-94-0x0000000074301000-0x0000000074303000-memory.dmp

    Filesize

    8KB

  • memory/1708-65-0x0000000074761000-0x0000000074763000-memory.dmp

    Filesize

    8KB

  • memory/1708-54-0x0000000075451000-0x0000000075453000-memory.dmp

    Filesize

    8KB