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Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/01/2025, 18:47

General

  • Target

    virussign.com_e9db7f543abe55498e2fe9e81adbd150.exe

  • Size

    694KB

  • MD5

    e9db7f543abe55498e2fe9e81adbd150

  • SHA1

    733744d9a70cd274c03136ff77fdf4e2e92ef3b8

  • SHA256

    eaf8a5f8274a994a5102074b58d341d6d5f8bead8ef8ff1eef1c1a233d621ac9

  • SHA512

    a4cc8e5b0c15c0a6e1c6a665dbbf0b05ccefd89d5f78f31eba08bdc9e409248cc169a6a10adfe1bc3c282854ad37247a9d27f714db1dc953b6e63f7f2b8292ab

  • SSDEEP

    768:5BBdFYDgao5/AUrLEEzayTpBJfxBDlxcFNXK8D1Foj/:5pcC/eAayJ3Rx0g

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 5 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\virussign.com_e9db7f543abe55498e2fe9e81adbd150.exe
    "C:\Users\Admin\AppData\Local\Temp\virussign.com_e9db7f543abe55498e2fe9e81adbd150.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Windows\system\rundll32.exe
      C:\Windows\system\rundll32.exe
      2⤵
      • Executes dropped EXE
      • Modifies system executable filetype association
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Windows\system\rundll32.exe

    Filesize

    708KB

    MD5

    fb7e5a5a2de13cad4aa40b24648e39de

    SHA1

    06da91474f8be3fcdf7ebefeaf1afb4caa2d7a21

    SHA256

    4c765793139c1cfc24e769928e0f88c72dd2a9bb1a42e87a3b68fd57378206b2

    SHA512

    8b072902c6998a98e2b17f9b25470b24636a536715c64eb5728a3745c2d6e37a0752b5ebe3c250985fd7094447dd696b4e3ea86f07dfa8332717b12ba7492115

  • memory/560-12-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/560-15-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1448-0-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1448-13-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1448-14-0x00000000002E0000-0x00000000002E2000-memory.dmp

    Filesize

    8KB