Analysis

  • max time kernel
    95s
  • max time network
    97s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03/12/2022, 23:46

General

  • Target

    file.exe

  • Size

    3.4MB

  • MD5

    ecfaa9552eae7dbe2d7a72ad600ecc77

  • SHA1

    830499846c5a2132351c171e0f9fa55bf09254f6

  • SHA256

    1b253c0e2be2b1a60983c8ae3af32ecd4f9f1d40575f405f9ca8e4c121970789

  • SHA512

    584d57d8c779cbf9f7b388d748a89dbc7befd7592c484b3f9cb425b234c4e9d1957749af4c53cf7e738e806d72c179f4f4a8da6e5e6f0d7890453b01a9cce661

  • SSDEEP

    98304:QGk5m/G2b4plP252il7/eXHa3w1b6CFG8gFJXcy2:94pkwil7/vw1bJsJXcy2

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 10 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.

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:364
    • C:\Users\Admin\AppData\Local\Temp\is-JSP9U.tmp\is-AK9IT.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-JSP9U.tmp\is-AK9IT.tmp" /SL4 $60126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3381589 51712
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Program Files (x86)\PrintFolders\PrintFolders.exe
        "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:828
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "PrintFolders.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2016

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          5.7MB

          MD5

          0a9480b38f4b4fe337dc9a18d3210678

          SHA1

          489c6514977d07a049ae22cfdbbf931f297a1ada

          SHA256

          09a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92

          SHA512

          1308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577

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

          Filesize

          5.7MB

          MD5

          0a9480b38f4b4fe337dc9a18d3210678

          SHA1

          489c6514977d07a049ae22cfdbbf931f297a1ada

          SHA256

          09a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92

          SHA512

          1308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577

        • C:\Users\Admin\AppData\Local\Temp\is-JSP9U.tmp\is-AK9IT.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • C:\Users\Admin\AppData\Local\Temp\is-JSP9U.tmp\is-AK9IT.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

          Filesize

          5.7MB

          MD5

          0a9480b38f4b4fe337dc9a18d3210678

          SHA1

          489c6514977d07a049ae22cfdbbf931f297a1ada

          SHA256

          09a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92

          SHA512

          1308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577

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

          Filesize

          5.7MB

          MD5

          0a9480b38f4b4fe337dc9a18d3210678

          SHA1

          489c6514977d07a049ae22cfdbbf931f297a1ada

          SHA256

          09a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92

          SHA512

          1308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577

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

          Filesize

          5.7MB

          MD5

          0a9480b38f4b4fe337dc9a18d3210678

          SHA1

          489c6514977d07a049ae22cfdbbf931f297a1ada

          SHA256

          09a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92

          SHA512

          1308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577

        • \Users\Admin\AppData\Local\Temp\is-JSP9U.tmp\is-AK9IT.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • \Users\Admin\AppData\Local\Temp\is-S7SS6.tmp\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-S7SS6.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-S7SS6.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Yz52TNjhBcitoM.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • memory/364-94-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/364-75-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/364-55-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/364-54-0x0000000076681000-0x0000000076683000-memory.dmp

          Filesize

          8KB

        • memory/364-57-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/984-76-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/984-77-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/984-74-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/984-85-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/984-86-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/984-87-0x0000000010000000-0x000000001001B000-memory.dmp

          Filesize

          108KB

        • memory/984-93-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/1708-73-0x0000000003120000-0x00000000044DD000-memory.dmp

          Filesize

          19.7MB