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Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/03/2024, 13:59

General

  • Target

    b24d204772ac32d11a09fa611078a1b4.exe

  • Size

    10KB

  • MD5

    b24d204772ac32d11a09fa611078a1b4

  • SHA1

    d1037bacf78a1553060a3fccf9a366552bba95ee

  • SHA256

    1b3ff3186a922c56d2878b848eae40037a754882705c2af4b33e851cf26d7859

  • SHA512

    633c488a871fcd059fbe656980cf142fa32414c101db4b86655d2557583e5c2c721d8532776c41791c9370d8914773eee9c791f6b1b16b2637a75bc5c40d904d

  • SSDEEP

    192:bMxYI3Z07C9Y4Mgkd92/O7lXsZnH1KYzWTpfuv+0b4fwGlAdRpXbxXMb+:4xLJ07bHo/GknH1KYaAv+02lIW+

Score
8/10

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe
    "C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\SysWOW64\mduaeyk.exe
      C:\Windows\system32\mduaeyk.exe ˜‰
      2⤵
      • Executes dropped EXE
      PID:1408
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat
      2⤵
      • Deletes itself
      PID:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\b24d204772ac32d11a09fa611078a1b4.exe.bat

    Filesize

    182B

    MD5

    471f2c1ffcb997493e64179948ca43ab

    SHA1

    10b484c6f76a430ca133dc51b21891a303b3d808

    SHA256

    e52d758998118a279a07385b2cf5b5793a1335308eb6c6eb5deaecf248bf4e49

    SHA512

    2419fe56232ad920124849d468545899f759a25873810a299a5da2e15976dc92bf485f1ffbf9c5fc1536fcf4a1b01c6495c15d0789b64332be1a2491c1da1458

  • \Windows\SysWOW64\mduaeyk.exe

    Filesize

    10KB

    MD5

    b24d204772ac32d11a09fa611078a1b4

    SHA1

    d1037bacf78a1553060a3fccf9a366552bba95ee

    SHA256

    1b3ff3186a922c56d2878b848eae40037a754882705c2af4b33e851cf26d7859

    SHA512

    633c488a871fcd059fbe656980cf142fa32414c101db4b86655d2557583e5c2c721d8532776c41791c9370d8914773eee9c791f6b1b16b2637a75bc5c40d904d

  • memory/1408-12-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2084-0-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2084-4-0x0000000000220000-0x000000000022F000-memory.dmp

    Filesize

    60KB

  • memory/2084-10-0x0000000000220000-0x000000000022F000-memory.dmp

    Filesize

    60KB

  • memory/2084-20-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB