Analysis

  • max time kernel
    188s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    11/06/2022, 18:31

General

  • Target

    259f205fe9a1f92bb1edd9afcc9cd6832e07b9ed858dd0d14dac3aaaa459084c.docm

  • Size

    680KB

  • MD5

    f74d8ea669f1d0d933f93fdd56307d8a

  • SHA1

    b84fed3454dc4ff366355a140817b460dc97fed3

  • SHA256

    259f205fe9a1f92bb1edd9afcc9cd6832e07b9ed858dd0d14dac3aaaa459084c

  • SHA512

    06062c65e36c849b8b5b376e1d299cfdca5418926d995c66db760f2dc2136ed024fdf020c085c85f3ae096d30f43fde74150703b4e663d6b3eb3478f063bb9ce

Malware Config

Signatures

  • Imminent RAT

    Remote-access trojan based on Imminent Monitor remote admin software.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\259f205fe9a1f92bb1edd9afcc9cd6832e07b9ed858dd0d14dac3aaaa459084c.docm" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2996
    • C:\ProgramData\Memsys\ms.exe
      C:\ProgramData\Memsys\ms.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2064
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:3800

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Memsys\ms.exe

      Filesize

      321KB

      MD5

      9a5d1c7ad2013e8cc2af40b15f52c603

      SHA1

      c044a1df2ec140b76448cb2169b42864d57baeef

      SHA256

      9777eef17d35f36a40d078f37ed10991366d369296f3db6fde00685c31044404

      SHA512

      2eb7d9a8c72f2c20c59f6413aa8c66fabf3f0d9ab2f14a42141cdc21a5e0a3f297be35bd20e23c9e3124584b75ff753e5ab017a870c87d1ca877103c8d626e03

    • C:\ProgramData\Memsys\ms.exe

      Filesize

      321KB

      MD5

      9a5d1c7ad2013e8cc2af40b15f52c603

      SHA1

      c044a1df2ec140b76448cb2169b42864d57baeef

      SHA256

      9777eef17d35f36a40d078f37ed10991366d369296f3db6fde00685c31044404

      SHA512

      2eb7d9a8c72f2c20c59f6413aa8c66fabf3f0d9ab2f14a42141cdc21a5e0a3f297be35bd20e23c9e3124584b75ff753e5ab017a870c87d1ca877103c8d626e03

    • memory/2064-143-0x0000000074B30000-0x00000000750E1000-memory.dmp

      Filesize

      5.7MB

    • memory/2064-142-0x0000000074B30000-0x00000000750E1000-memory.dmp

      Filesize

      5.7MB

    • memory/2996-134-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-136-0x00007FFABCEA0000-0x00007FFABCEB0000-memory.dmp

      Filesize

      64KB

    • memory/2996-137-0x000001C1198E8000-0x000001C1198EA000-memory.dmp

      Filesize

      8KB

    • memory/2996-138-0x000001C1198E8000-0x000001C1198EA000-memory.dmp

      Filesize

      8KB

    • memory/2996-135-0x00007FFABCEA0000-0x00007FFABCEB0000-memory.dmp

      Filesize

      64KB

    • memory/2996-130-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-133-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-131-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-132-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-146-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-148-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-147-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB

    • memory/2996-145-0x00007FFABF110000-0x00007FFABF120000-memory.dmp

      Filesize

      64KB