Analysis

  • max time kernel
    128s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    30-01-2022 16:25

General

  • Target

    11c45925b64777eaa401a6c0f6a6f847fb80e82d8da8fdfe1156d28663fd9396.doc

  • Size

    3.0MB

  • MD5

    d851a1c634cd8a63d9dcf0db5b84b200

  • SHA1

    3208d7bc352771507837e075586e83216cc61be5

  • SHA256

    11c45925b64777eaa401a6c0f6a6f847fb80e82d8da8fdfe1156d28663fd9396

  • SHA512

    12444b6ade5beb5f658ade2553013eac17a8e766bf210e3914b0393ab2252752c89ca3c33705008916895d8ad070f8c8279d63e3eedb2323354c6c1d0a8a9a06

Score
10/10

Malware Config

Signatures

  • CrimsonRAT Main Payload 3 IoCs
  • CrimsonRat

    Crimson RAT is a malware linked to a Pakistani-linked threat actor.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\11c45925b64777eaa401a6c0f6a6f847fb80e82d8da8fdfe1156d28663fd9396.doc"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\ProgramData\Remdias\hringarma.exe
      C:\ProgramData\Remdias\hringarma.exe
      2⤵
      • Executes dropped EXE
      PID:580
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1728
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /Automation -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1184

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/580-63-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

      Filesize

      4KB

    • memory/1184-72-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1728-71-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

      Filesize

      8KB

    • memory/1940-58-0x0000000006950000-0x0000000006952000-memory.dmp

      Filesize

      8KB

    • memory/1940-54-0x0000000072B21000-0x0000000072B24000-memory.dmp

      Filesize

      12KB

    • memory/1940-57-0x00000000760F1000-0x00000000760F3000-memory.dmp

      Filesize

      8KB

    • memory/1940-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1940-55-0x00000000705A1000-0x00000000705A3000-memory.dmp

      Filesize

      8KB