Analysis

  • max time kernel
    141s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2024 13:52

General

  • Target

    4925b9c17c5c0de34eedf258f8f4f374.exe

  • Size

    202KB

  • MD5

    4925b9c17c5c0de34eedf258f8f4f374

  • SHA1

    0a66255b71760d6fd467ad48c7be3816e32097c9

  • SHA256

    9a6a99e76ce170b6abda7ba6fbe18d492b5276db3ca68ed273de74e5cb564e42

  • SHA512

    dd49fb95737b42d93cbb3359ceefaa9fcecf3c4c66f22f19207cd513e2184524db666f0641f4896a43b817740b8d40c3c0cb99066d137795f750791be68295aa

  • SSDEEP

    6144:lkaoTSj1byLqohs0g7ltVXPeAayyQqxa1m:UGpbyLLhCJfkyylG

Score
8/10

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4925b9c17c5c0de34eedf258f8f4f374.exe
    "C:\Users\Admin\AppData\Local\Temp\4925b9c17c5c0de34eedf258f8f4f374.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" "C:\Windows\system32\dccwskey64.dll",CreateProcessNotify
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1704
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\259414982.bat" "C:\Users\Admin\AppData\Local\Temp\4925b9c17c5c0de34eedf258f8f4f374.exe""
      2⤵
      • Deletes itself
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\attrib.exe
        attrib -s -r -h"C:\Users\Admin\AppData\Local\Temp\4925b9c17c5c0de34eedf258f8f4f374.exe"
        3⤵
        • Loads dropped DLL
        • Views/modifies file attributes
        PID:1352
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Executes dropped EXE
    PID:1360

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\259414982.bat
    Filesize

    97B

    MD5

    d226a657b279c5fc0a892748230a56ff

    SHA1

    fa7e4fb6d6de3c4769001cbfce0a00ba02ef28a5

    SHA256

    9dae2767b8e3499d37418a75ddd04d457c7ec8d6c8f312ee109c95a8a97e7761

    SHA512

    07d55ccf3b511c3be64f6dcd05cea3feaafb286196e5d7ba30016ab6d9c0d656fb7cde8eb1ce0ef28a41f1f3f00f0e29020c92479619fd43e4ed47b829f8bf2a

  • \Windows\SysWOW64\dccwskey.dll
    Filesize

    66KB

    MD5

    1b779622c0d6eec48ac0c1f3e39eb7b9

    SHA1

    db01babafb0bbd256dca940cbe3667774e76c80a

    SHA256

    ff0d559548eb5bcf7ee0368198cd74d2aca13b54dece875080653b677c81508a

    SHA512

    fc88df2a55dd082a568ade994ea0eaa6a581f94e797fbe3962eaa692e43ac5403b4e817ccc011445643d690022bfbe14f580f39a06b1cab14cbef0d8091c4a34

  • \Windows\System32\dccwskey64.dll
    Filesize

    75KB

    MD5

    4dab557dad0fb8ec95f66d5efe648b02

    SHA1

    b52d4d3c8429a132b7582cd8dbe89ec93da3dc05

    SHA256

    b8a5ae38b6d38327ae2abbeb70dec6ee9ac52cdc421f5585c4907e8088eb3849

    SHA512

    5dbc616b17578dfb4c620bcca3b040a89b5e771f34053ffe46ff449f0bea5f68f6c7db9eb7d43cddf7de7e34a94aeb29be4c2174bcec3de74a5a09a6bd70afbf

  • memory/1352-50-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/1360-41-0x0000000180000000-0x0000000180019000-memory.dmp
    Filesize

    100KB

  • memory/1360-25-0x0000000002580000-0x0000000002581000-memory.dmp
    Filesize

    4KB

  • memory/1360-23-0x0000000002580000-0x0000000002581000-memory.dmp
    Filesize

    4KB

  • memory/1420-42-0x0000000001000000-0x0000000001035000-memory.dmp
    Filesize

    212KB

  • memory/1420-7-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/1420-6-0x0000000000FB0000-0x0000000000FB1000-memory.dmp
    Filesize

    4KB

  • memory/1420-0-0x0000000000220000-0x0000000000221000-memory.dmp
    Filesize

    4KB

  • memory/1420-43-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/1420-1-0x0000000001000000-0x0000000001035000-memory.dmp
    Filesize

    212KB

  • memory/1420-68-0x0000000001000000-0x0000000001035000-memory.dmp
    Filesize

    212KB

  • memory/1420-69-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/1704-22-0x0000000180000000-0x0000000180019000-memory.dmp
    Filesize

    100KB

  • memory/1704-14-0x0000000001CF0000-0x0000000001CF1000-memory.dmp
    Filesize

    4KB

  • memory/2604-54-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB

  • memory/2604-70-0x0000000010000000-0x0000000010015000-memory.dmp
    Filesize

    84KB