Analysis

  • max time kernel
    152s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2022, 01:32

General

  • Target

    file.exe

  • Size

    3.4MB

  • MD5

    365c04e9edcfb735f44314ef8b4646a7

  • SHA1

    7928a871f296edcc0fdb1ce09aeb7ef453c4df8e

  • SHA256

    e861439a18107599c91e5a38a66d6f0f81eff2a7286900c3ed16e27d59f87536

  • SHA512

    4d244bf743b4f5e38d914031b7af95fe68aee1eed655daeb3514b70b0d9b3a7e89724b0ca94602265cb0f052fbcb6911dc4d5462cf4768b46721b900bb39c06b

  • SSDEEP

    98304:QGrPEMIaS6rn3wGcZAnNP/EEYJG5SeuykOVbqFeZ87jXcyb:rjfIaS6r3wGcZwDKGweuylVb0087jXcY

Score
10/10

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

  • NyMaim

    NyMaim is a malware with various capabilities written in C++ and first seen in 2013.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4940
    • C:\Users\Admin\AppData\Local\Temp\is-EOUVK.tmp\is-1VDU0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-EOUVK.tmp\is-1VDU0.tmp" /SL4 $40044 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3354322 51712
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:4916
      • C:\Program Files (x86)\PrintFolders\PrintFolders.exe
        "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of WriteProcessMemory
        PID:3964
        • C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\QWnFFP.exe
          4⤵
          • Executes dropped EXE
          PID:2000

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\PrintFolders\PrintFolders.exe

          Filesize

          5.7MB

          MD5

          55c4dd603526b3675cd8095bcec017d8

          SHA1

          138101a2e415050b00f870ad3fef89ff837fe6a0

          SHA256

          3d374f8c8f9909ce3abdfff44416ec33ac77dfa1a6910f1532f09a9beea4a126

          SHA512

          3624df4d2b28575e217a06f3d941c86b4ac8051525e724007b1c4b872aed3c7bb9e87d0a16e3775c0d5976a5c6cb20adc653ae5c07e1eb28503da993a3125e6d

        • C:\Program Files (x86)\PrintFolders\PrintFolders.exe

          Filesize

          5.7MB

          MD5

          55c4dd603526b3675cd8095bcec017d8

          SHA1

          138101a2e415050b00f870ad3fef89ff837fe6a0

          SHA256

          3d374f8c8f9909ce3abdfff44416ec33ac77dfa1a6910f1532f09a9beea4a126

          SHA512

          3624df4d2b28575e217a06f3d941c86b4ac8051525e724007b1c4b872aed3c7bb9e87d0a16e3775c0d5976a5c6cb20adc653ae5c07e1eb28503da993a3125e6d

        • C:\Users\Admin\AppData\Local\Temp\is-7ARLQ.tmp\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-EOUVK.tmp\is-1VDU0.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • C:\Users\Admin\AppData\Local\Temp\is-EOUVK.tmp\is-1VDU0.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\QWnFFP.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\QWnFFP.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • memory/3964-143-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/3964-144-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/3964-145-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/3964-146-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/3964-150-0x0000000010000000-0x000000001001B000-memory.dmp

          Filesize

          108KB

        • memory/4940-132-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/4940-139-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/4940-134-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB