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Analysis

  • max time kernel
    169s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2022, 00:55

General

  • Target

    965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll

  • Size

    147KB

  • MD5

    264313c0e5e6060ddffc07df8a07ea70

  • SHA1

    91b7a6ba877cf4631164b65227b5ccc865fe34dd

  • SHA256

    965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

  • SHA512

    0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6

  • SSDEEP

    3072:8mtVm+0Z8gm+gIViTZQBzZGGXxWZcgKNYw1sC1mmVXGI:lVm+0qgHkSvxEcigVl

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 15 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll,#1
      2⤵
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:332
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\PROGRA~3\nbjr7w4v.plz,GL300
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2176
        • C:\Windows\SysWOW64\regedit.exe
          C:\Windows\regedit.exe -s C:\PROGRA~3\v4w7rjbn.reg
          4⤵
          • Sets DLL path for service in the registry
          • Runs .reg file with regedit
          PID:4216
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa39b1855 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:4200

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\PROGRA~3\nbjr7w4v.plz

    Filesize

    147KB

    MD5

    264313c0e5e6060ddffc07df8a07ea70

    SHA1

    91b7a6ba877cf4631164b65227b5ccc865fe34dd

    SHA256

    965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

    SHA512

    0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6

  • C:\ProgramData\nbjr7w4v.plz

    Filesize

    147KB

    MD5

    264313c0e5e6060ddffc07df8a07ea70

    SHA1

    91b7a6ba877cf4631164b65227b5ccc865fe34dd

    SHA256

    965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

    SHA512

    0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6

  • C:\ProgramData\v4w7rjbn.reg

    Filesize

    285B

    MD5

    8d4e96ef0806a418c6118e678aa6030c

    SHA1

    5cac1d68a91b18d63cceb709843b6b7b7905f4ea

    SHA256

    639ec70faa7e4fb59543488900ab7fa10398aa1539afbc09b19944dde0d101df

    SHA512

    68808ebac711e0d309c41937d0483010e2dffaff4635812380653120e5bc2933c1dae34bd0e82ed8ace3e3df97e887520fa997bee1697b8e1680b3dc48d9fc49

  • memory/332-133-0x0000000075140000-0x000000007516B000-memory.dmp

    Filesize

    172KB

  • memory/332-142-0x0000000075140000-0x000000007516B000-memory.dmp

    Filesize

    172KB

  • memory/2176-139-0x0000000075100000-0x000000007512B000-memory.dmp

    Filesize

    172KB

  • memory/2176-143-0x0000000075100000-0x000000007512B000-memory.dmp

    Filesize

    172KB

  • memory/2176-144-0x0000000075100000-0x000000007512B000-memory.dmp

    Filesize

    172KB