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Analysis

  • max time kernel
    53s
  • max time network
    54s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    08/01/2023, 11:02

General

  • Target

    file.exe

  • Size

    1.9MB

  • MD5

    bf1607f8b62108ee051a66be99976470

  • SHA1

    51ac56c782753086a0ac96f66a57842ad4635fff

  • SHA256

    bcc36cf04e425f78fd84739510c01105b95accf91dc4495bf896176ce5fb9ab3

  • SHA512

    5e7a6220229da9d2bdb78ee6df88c93cfbcb06cdcad26323a482a9b510e23939c31202dbe4f6e8c803a24b6ea056b27fba5674e144327f8fed27dda86c80960f

  • SSDEEP

    49152:y2+edFbQlqQkTmIYgM8TQc34XdvYY3Nr73Q9I/m/WahOVLH:jjdKcKNg/J2dvT93C/JhOVLH

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 6 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 17 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 1 IoCs
  • Suspicious use of WriteProcessMemory 23 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:852
    • C:\Users\Admin\AppData\Local\Temp\is-MN4OA.tmp\file.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-MN4OA.tmp\file.tmp" /SL5="$70122,1727299,162304,C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:964
      • C:\Program Files (x86)\Split Files\HitFiles134.exe
        "C:\Program Files (x86)\Split Files\HitFiles134.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:968
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dHpJCq3V.exe
          4⤵
          • Executes dropped EXE
          PID:1120
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "HitFiles134.exe" /f & erase "C:\Program Files (x86)\Split Files\HitFiles134.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:436
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "HitFiles134.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1216

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Split Files\HitFiles134.exe

    Filesize

    3.2MB

    MD5

    c0e60abdbcd6b892ba113cbc33f0902c

    SHA1

    3ee2e3ada946c04618841636acd7b44f31cd08d9

    SHA256

    147447c65e1ae840de7109db716fef5cb2f445d5ae2572d4f372df51869a787c

    SHA512

    a0793a96a18dca64a15cff9bcf0628a6ad45786255ac3e4e11e9a3fb9fdb2ad290a5f813950cfa21ec955153efb39c3a4a312b0651faee7135bc51c1dd6f3a65

  • C:\Program Files (x86)\Split Files\HitFiles134.exe

    Filesize

    3.2MB

    MD5

    c0e60abdbcd6b892ba113cbc33f0902c

    SHA1

    3ee2e3ada946c04618841636acd7b44f31cd08d9

    SHA256

    147447c65e1ae840de7109db716fef5cb2f445d5ae2572d4f372df51869a787c

    SHA512

    a0793a96a18dca64a15cff9bcf0628a6ad45786255ac3e4e11e9a3fb9fdb2ad290a5f813950cfa21ec955153efb39c3a4a312b0651faee7135bc51c1dd6f3a65

  • C:\Users\Admin\AppData\Local\Temp\is-MN4OA.tmp\file.tmp

    Filesize

    800KB

    MD5

    7013a53c5472267941844ed17de4de3c

    SHA1

    dda886aa81995da2abb763969bba86e82988db1a

    SHA256

    9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

    SHA512

    6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

  • C:\Users\Admin\AppData\Local\Temp\is-MN4OA.tmp\file.tmp

    Filesize

    800KB

    MD5

    7013a53c5472267941844ed17de4de3c

    SHA1

    dda886aa81995da2abb763969bba86e82988db1a

    SHA256

    9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

    SHA512

    6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dHpJCq3V.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Program Files (x86)\Split Files\HitFiles134.exe

    Filesize

    3.2MB

    MD5

    c0e60abdbcd6b892ba113cbc33f0902c

    SHA1

    3ee2e3ada946c04618841636acd7b44f31cd08d9

    SHA256

    147447c65e1ae840de7109db716fef5cb2f445d5ae2572d4f372df51869a787c

    SHA512

    a0793a96a18dca64a15cff9bcf0628a6ad45786255ac3e4e11e9a3fb9fdb2ad290a5f813950cfa21ec955153efb39c3a4a312b0651faee7135bc51c1dd6f3a65

  • \Users\Admin\AppData\Local\Temp\is-MN4OA.tmp\file.tmp

    Filesize

    800KB

    MD5

    7013a53c5472267941844ed17de4de3c

    SHA1

    dda886aa81995da2abb763969bba86e82988db1a

    SHA256

    9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

    SHA512

    6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

  • \Users\Admin\AppData\Local\Temp\is-PTNH5.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-PTNH5.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-PTNH5.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dHpJCq3V.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/852-87-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/852-55-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/852-68-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/852-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

    Filesize

    8KB

  • memory/964-81-0x00000000035F0000-0x000000000471D000-memory.dmp

    Filesize

    17.2MB

  • memory/964-70-0x00000000035F0000-0x000000000471D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-73-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-72-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-77-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/968-71-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-82-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-83-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB

  • memory/968-86-0x0000000000400000-0x000000000152D000-memory.dmp

    Filesize

    17.2MB