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Analysis

  • max time kernel
    81s
  • max time network
    85s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05/12/2022, 10:03

General

  • Target

    file.exe

  • Size

    3.7MB

  • MD5

    e7fa81fb245b3897eadc1724cf439b7b

  • SHA1

    375b87cfeb71f8dbddcfa2169710add49501841c

  • SHA256

    e3a84dfbb3c7738d7cd178852094b341df4382c8dd180764f8be572b5d6bc734

  • SHA512

    7f1e4dc3df3fe3ba4f7d3bbd22810ae9a0e6bfd036129c8dc23e4ad6501061ef2d615b22983b8d280be1131aaa8443502f90b1afc73b2a60c1fc93dc309cc218

  • SSDEEP

    98304:w8UnghPfNuP37lWLb5Uq3WYE4BTH/wbRjcY/5:wgRfNu46q3b7TQRjcY/5

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:1652
    • C:\Users\Admin\AppData\Local\Temp\is-M3KP6.tmp\is-S6CH3.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-M3KP6.tmp\is-S6CH3.tmp" /SL4 $60126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3616853 208896
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1956
      • 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:944
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1528
        • 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:580
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "PrintFolders.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    6.0MB

    MD5

    7617ae4ac0c2bc90e9f1e8de099f618b

    SHA1

    e955700e42f83de2359e33e718894c0c75db82ea

    SHA256

    740617ab4f33ec6691baf8fd161402129a0f68b3ab37dc4a8b8886a13207a5e9

    SHA512

    a88204f279439d9a82503a250dcda21302658f74e39ad13ac0f4cb649d29e4788e75b0001c4e1c7c0a2e0842ee374e715c1dacebc1123244ca0f3b2c58750afc

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

    Filesize

    6.0MB

    MD5

    7617ae4ac0c2bc90e9f1e8de099f618b

    SHA1

    e955700e42f83de2359e33e718894c0c75db82ea

    SHA256

    740617ab4f33ec6691baf8fd161402129a0f68b3ab37dc4a8b8886a13207a5e9

    SHA512

    a88204f279439d9a82503a250dcda21302658f74e39ad13ac0f4cb649d29e4788e75b0001c4e1c7c0a2e0842ee374e715c1dacebc1123244ca0f3b2c58750afc

  • C:\Users\Admin\AppData\Local\Temp\is-M3KP6.tmp\is-S6CH3.tmp

    Filesize

    797KB

    MD5

    10c841b0221d6870de7c951eaf5b1da9

    SHA1

    7cd2baa89144371033d8d7bebf947da886cd8795

    SHA256

    4252858d9c6d8d55f829d7e418ea8357fd26fbdf8c0fce1fed23a8c720a8807e

    SHA512

    e2330231d6056cf8f395e1b884e136ee29161f9b9afb4492e9057aaa254c8a9b89b95be8bd11dc6d83fdc2147b864529ce49ef072015f9f40f677a0f8d12555e

  • C:\Users\Admin\AppData\Local\Temp\is-M3KP6.tmp\is-S6CH3.tmp

    Filesize

    797KB

    MD5

    10c841b0221d6870de7c951eaf5b1da9

    SHA1

    7cd2baa89144371033d8d7bebf947da886cd8795

    SHA256

    4252858d9c6d8d55f829d7e418ea8357fd26fbdf8c0fce1fed23a8c720a8807e

    SHA512

    e2330231d6056cf8f395e1b884e136ee29161f9b9afb4492e9057aaa254c8a9b89b95be8bd11dc6d83fdc2147b864529ce49ef072015f9f40f677a0f8d12555e

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    6.0MB

    MD5

    7617ae4ac0c2bc90e9f1e8de099f618b

    SHA1

    e955700e42f83de2359e33e718894c0c75db82ea

    SHA256

    740617ab4f33ec6691baf8fd161402129a0f68b3ab37dc4a8b8886a13207a5e9

    SHA512

    a88204f279439d9a82503a250dcda21302658f74e39ad13ac0f4cb649d29e4788e75b0001c4e1c7c0a2e0842ee374e715c1dacebc1123244ca0f3b2c58750afc

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

    Filesize

    6.0MB

    MD5

    7617ae4ac0c2bc90e9f1e8de099f618b

    SHA1

    e955700e42f83de2359e33e718894c0c75db82ea

    SHA256

    740617ab4f33ec6691baf8fd161402129a0f68b3ab37dc4a8b8886a13207a5e9

    SHA512

    a88204f279439d9a82503a250dcda21302658f74e39ad13ac0f4cb649d29e4788e75b0001c4e1c7c0a2e0842ee374e715c1dacebc1123244ca0f3b2c58750afc

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

    Filesize

    6.0MB

    MD5

    7617ae4ac0c2bc90e9f1e8de099f618b

    SHA1

    e955700e42f83de2359e33e718894c0c75db82ea

    SHA256

    740617ab4f33ec6691baf8fd161402129a0f68b3ab37dc4a8b8886a13207a5e9

    SHA512

    a88204f279439d9a82503a250dcda21302658f74e39ad13ac0f4cb649d29e4788e75b0001c4e1c7c0a2e0842ee374e715c1dacebc1123244ca0f3b2c58750afc

  • \Users\Admin\AppData\Local\Temp\is-JM6OL.tmp\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-JM6OL.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-JM6OL.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-M3KP6.tmp\is-S6CH3.tmp

    Filesize

    797KB

    MD5

    10c841b0221d6870de7c951eaf5b1da9

    SHA1

    7cd2baa89144371033d8d7bebf947da886cd8795

    SHA256

    4252858d9c6d8d55f829d7e418ea8357fd26fbdf8c0fce1fed23a8c720a8807e

    SHA512

    e2330231d6056cf8f395e1b884e136ee29161f9b9afb4492e9057aaa254c8a9b89b95be8bd11dc6d83fdc2147b864529ce49ef072015f9f40f677a0f8d12555e

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aJcIc4LOOMXk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/944-89-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/944-88-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-76-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-77-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-78-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-98-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-74-0x00000000022D0000-0x00000000036D4000-memory.dmp

    Filesize

    20.0MB

  • memory/944-93-0x0000000000400000-0x0000000001804000-memory.dmp

    Filesize

    20.0MB

  • memory/944-75-0x00000000022D0000-0x00000000036D4000-memory.dmp

    Filesize

    20.0MB

  • memory/944-87-0x00000000022D0000-0x00000000036D4000-memory.dmp

    Filesize

    20.0MB

  • memory/1652-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

    Filesize

    8KB

  • memory/1652-55-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/1652-66-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/1652-99-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/1956-86-0x0000000003190000-0x0000000004594000-memory.dmp

    Filesize

    20.0MB

  • memory/1956-73-0x0000000003190000-0x0000000004594000-memory.dmp

    Filesize

    20.0MB