Resubmissions

01-03-2024 20:38

240301-ze5pesdb79 3

01-03-2024 20:03

240301-ysybtsce5x 3

01-03-2024 18:44

240301-xdmfcabg67 3

01-03-2024 17:56

240301-wjhhxabb92 10

Analysis

  • max time kernel
    118s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2024 17:56

General

  • Target

    Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe

  • Size

    102KB

  • MD5

    1b2d2a4b97c7c2727d571bbf9376f54f

  • SHA1

    1fc29938ec5c209ba900247d2919069b320d33b0

  • SHA256

    7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e

  • SHA512

    506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0

  • SSDEEP

    1536:jj+Rj1lGIXKSmE17v97yiqHGMRPtbsLW8/V2k12v1/BDxVyCfCrCAc:jjw6Sf0iqmMnb2W02v3mCf4Nc

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 8 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 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
    "C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:364
    • C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe
      "C:\Users\Admin\AppData\Local\Temp\Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3060
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
        • Deletes itself
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2660
        • C:\Users\Admin\AppData\Local\Temp\ebxkklyrnz.pre
          C:\Users\Admin\AppData\Local\Temp\ebxkklyrnz.pre
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2844
          • C:\Users\Admin\AppData\Local\Temp\ebxkklyrnz.pre
            C:\Users\Admin\AppData\Local\Temp\ebxkklyrnz.pre
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2488
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
              • Adds Run key to start application
              PID:2516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\ebxkklyrnz.pre

    Filesize

    102KB

    MD5

    1b2d2a4b97c7c2727d571bbf9376f54f

    SHA1

    1fc29938ec5c209ba900247d2919069b320d33b0

    SHA256

    7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e

    SHA512

    506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0

  • memory/2488-45-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2516-57-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2516-51-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2516-49-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2516-47-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2660-15-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2660-16-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/2660-20-0x000000007EFA0000-0x000000007EFAE000-memory.dmp

    Filesize

    56KB

  • memory/3060-14-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-17-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-12-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-10-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-8-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-4-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3060-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3060-2-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB