Analysis

  • max time kernel
    144s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 12:36

General

  • Target

    7d25f10b8321bf59dc5dd65e23abacfc.exe

  • Size

    140KB

  • MD5

    7d25f10b8321bf59dc5dd65e23abacfc

  • SHA1

    f1920081a3b49130aaf9ac3a429bf9b5b9022266

  • SHA256

    42a30e607fb699b5ee46ccb50113dd80dbaaae5a1bfe4877b8848a96c60e559d

  • SHA512

    dd395d687978d0a15c1e26b4173b20180e397f470a15ec8deefed64d2aa769acc6199c6fbc764d11f438d02308fc91b0da2f9a79f0cac19863e2d5dd0a16997a

  • SSDEEP

    3072:ltcwBbJ7WmdujrCN4N4dwfJ7WmdujrCN4N4dwL3KUeFbNJ4:ltTQONRdUQONRdM3NeFZ

Malware Config

Signatures

  • Detect XtremeRAT payload 3 IoCs
  • XtremeRAT

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 6 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7d25f10b8321bf59dc5dd65e23abacfc.exe
    "C:\Users\Admin\AppData\Local\Temp\7d25f10b8321bf59dc5dd65e23abacfc.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\systemk.exe
      C:\Users\Admin\AppData\Local\Temp\systemk.exe
      2⤵
      • Executes dropped EXE
      PID:5116
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5116 -s 12
        3⤵
        • Program crash
        PID:3392
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4104
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
          PID:2996
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 480
            4⤵
            • Program crash
            PID:4980
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 488
            4⤵
            • Program crash
            PID:4804
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
          3⤵
            PID:1516
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5116 -ip 5116
        1⤵
          PID:4704
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2996 -ip 2996
          1⤵
            PID:4276
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2996 -ip 2996
            1⤵
              PID:1748

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\server.exe

              Filesize

              33KB

              MD5

              a00121c2f045a8f12c9a51a9b3872cb5

              SHA1

              5cdec4fc03894fbe452156543f2ec4fd72368ae8

              SHA256

              438d8db46e231e9bd86b469eaaa924924ed69362008a3fc7dd589f4fc105846c

              SHA512

              98b947e4cb98085b0fbfae69230b09ea6412773c72edd9e69cea0525d2a524c79965003779e1e7aa9150a5d861e4ac9b2e722de87f4c03a54be2bee898d8c780

            • C:\Users\Admin\AppData\Local\Temp\systemk.exe

              Filesize

              7KB

              MD5

              d79efb472a22ad75d501317b21e66b5e

              SHA1

              24512f54884d3dda2d803457bbd3dcd513356196

              SHA256

              7255b1d1f001b9d9a5177e1f8063bcc824effe3570e6c19508babe12bb73c7d6

              SHA512

              7c5a2f516a727ddeb05f9a7c6565375debb05709ac9b95212fc748cba37a2ab81b7d727636141096e4511679ce140b07b37fdf36cfb47d8d1c8accdd24163ae5

            • memory/2000-0-0x0000000074640000-0x0000000074BF1000-memory.dmp

              Filesize

              5.7MB

            • memory/2000-2-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

              Filesize

              64KB

            • memory/2000-1-0x0000000074640000-0x0000000074BF1000-memory.dmp

              Filesize

              5.7MB

            • memory/2000-18-0x0000000074640000-0x0000000074BF1000-memory.dmp

              Filesize

              5.7MB

            • memory/2996-19-0x0000000010000000-0x000000001004D000-memory.dmp

              Filesize

              308KB

            • memory/2996-21-0x0000000010000000-0x000000001004D000-memory.dmp

              Filesize

              308KB

            • memory/4104-16-0x0000000010000000-0x000000001004D000-memory.dmp

              Filesize

              308KB

            • memory/4104-20-0x0000000010000000-0x000000001004D000-memory.dmp

              Filesize

              308KB

            • memory/5116-5-0x0000000010000000-0x000000001004D000-memory.dmp

              Filesize

              308KB