Analysis

  • max time kernel
    133s
  • max time network
    176s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2022, 01:02

General

  • Target

    file.exe

  • Size

    3.4MB

  • MD5

    304aea8386d0da915e7448efb4ac7d6c

  • SHA1

    8a768cce5eba814a85df00670d9283effa75da0d

  • SHA256

    f6483d7b512d9c1f5715a727ff3afc0d30e4b2fdf654c52efc8286824a31f328

  • SHA512

    8ffc2555dc3dbaa160f4f8aaa9c7bd0fc13d7ebaa250edf24655bc48dfcb76e10631adecba8875c2ae864832258d4ac2651addf56a32440ecc1650193b8a0b99

  • SSDEEP

    98304:4h4Jl8i5IdoneoCScV4+g90nlZKVaXcy8:qUl8pdoeRSc492ywXcy8

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:940
    • C:\Users\Admin\AppData\Local\Temp\is-SU6J0.tmp\is-MSRE5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-SU6J0.tmp\is-MSRE5.tmp" /SL4 $80022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3361597 51712
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:524
      • 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:636
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RbmVuBoW.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1436
        • 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:1668
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "PrintFolders.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1504

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          5.7MB

          MD5

          c060e832f85902f44816bb87a529eaf1

          SHA1

          47b7b4e0fefe472edbe2db3da0357fb422e917be

          SHA256

          0a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c

          SHA512

          87418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f

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

          Filesize

          5.7MB

          MD5

          c060e832f85902f44816bb87a529eaf1

          SHA1

          47b7b4e0fefe472edbe2db3da0357fb422e917be

          SHA256

          0a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c

          SHA512

          87418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f

        • C:\Users\Admin\AppData\Local\Temp\is-SU6J0.tmp\is-MSRE5.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

        • C:\Users\Admin\AppData\Local\Temp\is-SU6J0.tmp\is-MSRE5.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

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

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

          Filesize

          5.7MB

          MD5

          c060e832f85902f44816bb87a529eaf1

          SHA1

          47b7b4e0fefe472edbe2db3da0357fb422e917be

          SHA256

          0a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c

          SHA512

          87418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f

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

          Filesize

          5.7MB

          MD5

          c060e832f85902f44816bb87a529eaf1

          SHA1

          47b7b4e0fefe472edbe2db3da0357fb422e917be

          SHA256

          0a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c

          SHA512

          87418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f

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

          Filesize

          5.7MB

          MD5

          c060e832f85902f44816bb87a529eaf1

          SHA1

          47b7b4e0fefe472edbe2db3da0357fb422e917be

          SHA256

          0a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c

          SHA512

          87418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f

        • \Users\Admin\AppData\Local\Temp\is-9TJE9.tmp\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-9TJE9.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-9TJE9.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-SU6J0.tmp\is-MSRE5.tmp

          Filesize

          643KB

          MD5

          363a4d2aa5d6cf5cbb2267cccf0c4436

          SHA1

          a4cdb756698ed28f522956166a6292e9e309dd9c

          SHA256

          b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

          SHA512

          b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

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

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • memory/524-69-0x0000000003250000-0x000000000460D000-memory.dmp

          Filesize

          19.7MB

        • memory/524-76-0x0000000003250000-0x000000000460D000-memory.dmp

          Filesize

          19.7MB

        • memory/636-75-0x0000000001F60000-0x000000000331D000-memory.dmp

          Filesize

          19.7MB

        • memory/636-88-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/636-78-0x0000000001F60000-0x000000000331D000-memory.dmp

          Filesize

          19.7MB

        • memory/636-79-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/636-80-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/636-94-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/636-89-0x0000000010000000-0x000000001001B000-memory.dmp

          Filesize

          108KB

        • memory/636-70-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/636-77-0x0000000000400000-0x00000000017BD000-memory.dmp

          Filesize

          19.7MB

        • memory/940-65-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/940-55-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/940-54-0x00000000760A1000-0x00000000760A3000-memory.dmp

          Filesize

          8KB

        • memory/940-95-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB