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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23/11/2022, 23:53

General

  • Target

    6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.exe

  • Size

    320KB

  • MD5

    04b4b2f130705e6e22e4b940f5df3a90

  • SHA1

    d1ea0bf314bfb75b669bae9e2750fd55fe41077a

  • SHA256

    6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb

  • SHA512

    28fc9a38f7e73f09f75de2d73e99983875967140fd3a80330ddfa63351d0ffb97b5bc83acb9ddf2c55b503b857231044211eaa038aab0fc1304d99702657fc57

  • SSDEEP

    6144:jTw1o1IV3puaibGKFHi0mofhaH05kipz016580bHFP86JQPDHDdx/QtqR:nTgvmzFHi0mo5aH0qMzd5807FPPJQPDV

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 11 IoCs
  • Adds policy Run key to start application 2 TTPs 17 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 3 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.exe
    "C:\Users\Admin\AppData\Local\Temp\6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.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:1384
    • C:\Users\Admin\AppData\Local\Temp\wdltt.exe
      "C:\Users\Admin\AppData\Local\Temp\wdltt.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:964
    • C:\Users\Admin\AppData\Local\Temp\wdltt.exe
      "C:\Users\Admin\AppData\Local\Temp\wdltt.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:1656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

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

    Filesize

    712KB

    MD5

    cd283d56c9159811f425578d0ec0ec55

    SHA1

    5c99a7365de2be80bb3d7fc8c96278c558a37b3d

    SHA256

    7e6a3813dc6ca59c5b943a456604e2c3689617078784e0a7430da64a5332a89c

    SHA512

    75d3119beb02a08a0d0069ae24f547d5f9fefa7b48ab0af082f8da06f5efefad2b3e0e8c837c1bdb03922a3068f44e79afb3431fe9ac0da86c011262d6e7e3db

  • memory/964-92-0x0000000074A81000-0x0000000074A83000-memory.dmp

    Filesize

    8KB

  • memory/1384-54-0x0000000076701000-0x0000000076703000-memory.dmp

    Filesize

    8KB

  • memory/1384-65-0x0000000074F21000-0x0000000074F23000-memory.dmp

    Filesize

    8KB

  • memory/1656-66-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

    Filesize

    8KB

  • memory/1656-67-0x0000000074BF1000-0x0000000074BF3000-memory.dmp

    Filesize

    8KB

  • memory/1656-68-0x0000000074E11000-0x0000000074E13000-memory.dmp

    Filesize

    8KB

  • memory/1656-69-0x0000000074BF1000-0x0000000074BF3000-memory.dmp

    Filesize

    8KB

  • memory/1656-71-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

    Filesize

    8KB

  • memory/1656-72-0x0000000074BF1000-0x0000000074BF3000-memory.dmp

    Filesize

    8KB

  • memory/1656-73-0x0000000074A81000-0x0000000074A83000-memory.dmp

    Filesize

    8KB