Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 21:34

General

  • Target

    90636e2071ba6ac5f88528c55e655ca8.exe

  • Size

    354KB

  • MD5

    90636e2071ba6ac5f88528c55e655ca8

  • SHA1

    32b50e2449f4ed6b1326f359d272b3ed69bd4689

  • SHA256

    f8c294711ca0535b5301f56a977d651d54189eca90c5cc83a26cb4270124443f

  • SHA512

    0c8c61bff11c185c8345974f6ed37a0bbe133df2b7ce0c2adf3e1cb9a15f6721fc4b259ac5f667fb7b42fa4dbdfc5e99d6de64636c70c099c3e88864d47a3f4e

  • SSDEEP

    6144:thBepH41+m7vv47B32CEIsUozZ3bR4OD8yjJe6b+78x5mJBID791PD20/MV70xXe:eH4177vv4mIsUo9RDlk6KwbmXIFl1/gh

Malware Config

Extracted

Family

xtremerat

C2

kaan1993.zapto.org

Signatures

  • Detect XtremeRAT payload 9 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • UPX packed file 11 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\90636e2071ba6ac5f88528c55e655ca8.exe
    "C:\Users\Admin\AppData\Local\Temp\90636e2071ba6ac5f88528c55e655ca8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5060
    • C:\Users\Admin\AppData\Local\Temp\90636e2071ba6ac5f88528c55e655ca8.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2236
  • C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    1⤵
      PID:3252
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 484
        2⤵
        • Program crash
        PID:2812
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 492
        2⤵
        • Program crash
        PID:1744
    • C:\Windows\SysWOW64\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious use of SetWindowsHookEx
      PID:3264
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3252 -ip 3252
      1⤵
        PID:1644
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3252 -ip 3252
        1⤵
          PID:1552

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • memory/2236-5-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/2236-7-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/2236-6-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/2236-10-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/2236-2-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3252-8-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3252-15-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3264-12-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3264-13-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3264-14-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/3264-9-0x0000000010000000-0x000000001004D000-memory.dmp

                Filesize

                308KB

              • memory/5060-4-0x0000000000400000-0x00000000004AD000-memory.dmp

                Filesize

                692KB