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Analysis

  • max time kernel
    183s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 06:00

General

  • Target

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe

  • Size

    336KB

  • MD5

    99f74c9cda2185fe716cb7d670e706f0

  • SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

  • SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

  • SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • SSDEEP

    6144:Gvnm3YkDJaCajEyQH3LGa8J75guUsvcLc7sxnWWdqZW83Ko1TLC5KvTBsK:Gvnm3BDJtOIF8ZEQ0dqZtauTL0ATBsK

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe
    "C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 960 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe" & start C:\Users\Admin\AppData\Local\whudm.exe -f
      2⤵
      • Deletes itself
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /pid 960
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:112
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 3 127.1
        3⤵
        • Runs ping.exe
        PID:1212
      • C:\Users\Admin\AppData\Local\whudm.exe
        C:\Users\Admin\AppData\Local\whudm.exe -f
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1576

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\whudm.exe

    Filesize

    336KB

    MD5

    99f74c9cda2185fe716cb7d670e706f0

    SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

    SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

    SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • C:\Users\Admin\AppData\Local\whudm.exe

    Filesize

    336KB

    MD5

    99f74c9cda2185fe716cb7d670e706f0

    SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

    SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

    SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • \Users\Admin\AppData\Local\whudm.exe

    Filesize

    336KB

    MD5

    99f74c9cda2185fe716cb7d670e706f0

    SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

    SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

    SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • \Users\Admin\AppData\Local\whudm.exe

    Filesize

    336KB

    MD5

    99f74c9cda2185fe716cb7d670e706f0

    SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

    SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

    SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • \Users\Admin\AppData\Local\whudm.exe

    Filesize

    336KB

    MD5

    99f74c9cda2185fe716cb7d670e706f0

    SHA1

    9a70cb8e0575341374ea39b3f7197156c5baf681

    SHA256

    8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

    SHA512

    c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

  • memory/960-59-0x0000000001000000-0x00000000010A9000-memory.dmp

    Filesize

    676KB

  • memory/960-57-0x0000000001000000-0x00000000010A9000-memory.dmp

    Filesize

    676KB

  • memory/960-56-0x0000000001000000-0x00000000010A9000-memory.dmp

    Filesize

    676KB

  • memory/960-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

    Filesize

    8KB

  • memory/960-54-0x0000000000260000-0x0000000000263000-memory.dmp

    Filesize

    12KB

  • memory/1576-69-0x0000000001000000-0x00000000010A9000-memory.dmp

    Filesize

    676KB

  • memory/1576-70-0x0000000001000000-0x00000000010A9000-memory.dmp

    Filesize

    676KB