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Analysis

  • max time kernel
    60s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/12/2022, 22:28

General

  • Target

    32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe

  • Size

    2.3MB

  • MD5

    1ccf89699954b4eeb912215a74f2e569

  • SHA1

    f2fc990392503a4acabce5829a1bbbd4c343449a

  • SHA256

    32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5

  • SHA512

    2bbbe8c171ad0aed6280c08fb3d765ce565b29751887f8108a397262fa231cdf28649bc2bb8f43c793dab69cf4ebed141ed5bd58f0f40f3e6f2ac1b88382ccea

  • SSDEEP

    49152:Z0PBT0MNvq4c+SuMOTmo2X5AZjsaKobSkxAjlVIJ7O/d3Hx:Z0PBT0MFXvXdLjAobrNJQR

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\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe
    "C:\Users\Admin\AppData\Local\Temp\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Users\Admin\AppData\Local\Temp\is-3MQ01.tmp\is-B2QFL.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-3MQ01.tmp\is-B2QFL.tmp" /SL4 $80122 "C:\Users\Admin\AppData\Local\Temp\32d0cb38965478a627d55420c97c6bc4ac69e0a7bdf010ddc2991f23c6e72cf5.exe" 2163478 169984
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Program Files (x86)\PrintFolders\ocFolders.exe
        "C:\Program Files (x86)\PrintFolders\ocFolders.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1660
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1304
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "ocFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\ocFolders.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1736
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "ocFolders.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:280

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    3.6MB

    MD5

    c5658f0319ca7c3d9807c5beb89ef971

    SHA1

    f4e0446a32682ee753daffd61a014f423e2b22cd

    SHA256

    e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

    SHA512

    06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

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

    Filesize

    3.6MB

    MD5

    c5658f0319ca7c3d9807c5beb89ef971

    SHA1

    f4e0446a32682ee753daffd61a014f423e2b22cd

    SHA256

    e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

    SHA512

    06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

  • C:\Users\Admin\AppData\Local\Temp\is-3MQ01.tmp\is-B2QFL.tmp

    Filesize

    759KB

    MD5

    d35c838e416f6a317c90117cc834b92b

    SHA1

    289a030cc78131163a8d6bc3c5dd831ac0f962a1

    SHA256

    2d4703dac05e8e6d136a8173f84d2618b54b6e7ef44ae5557350614bbb5a9797

    SHA512

    9a50f934c199b4415911cae873cebd46f682526290b41a42a882a580fed67c99f5248abfbaa367f20b471564b4cf6d62f28ed2c945206267b37788f94377f167

  • C:\Users\Admin\AppData\Local\Temp\is-3MQ01.tmp\is-B2QFL.tmp

    Filesize

    759KB

    MD5

    d35c838e416f6a317c90117cc834b92b

    SHA1

    289a030cc78131163a8d6bc3c5dd831ac0f962a1

    SHA256

    2d4703dac05e8e6d136a8173f84d2618b54b6e7ef44ae5557350614bbb5a9797

    SHA512

    9a50f934c199b4415911cae873cebd46f682526290b41a42a882a580fed67c99f5248abfbaa367f20b471564b4cf6d62f28ed2c945206267b37788f94377f167

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    3.6MB

    MD5

    c5658f0319ca7c3d9807c5beb89ef971

    SHA1

    f4e0446a32682ee753daffd61a014f423e2b22cd

    SHA256

    e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

    SHA512

    06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

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

    Filesize

    3.6MB

    MD5

    c5658f0319ca7c3d9807c5beb89ef971

    SHA1

    f4e0446a32682ee753daffd61a014f423e2b22cd

    SHA256

    e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

    SHA512

    06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

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

    Filesize

    3.6MB

    MD5

    c5658f0319ca7c3d9807c5beb89ef971

    SHA1

    f4e0446a32682ee753daffd61a014f423e2b22cd

    SHA256

    e64de561fb3a09bd67143b5057113068dd5a9aa9274cc7d5dda1c54af8f75daa

    SHA512

    06f019fcb4b3c771514d6919c68cfaf0c2650243958d937880c6ca5e8f136cf5b7949245523eb57894bcbd251af94584393f8859a399643622e6597bfcfca4ce

  • \Users\Admin\AppData\Local\Temp\is-3MQ01.tmp\is-B2QFL.tmp

    Filesize

    759KB

    MD5

    d35c838e416f6a317c90117cc834b92b

    SHA1

    289a030cc78131163a8d6bc3c5dd831ac0f962a1

    SHA256

    2d4703dac05e8e6d136a8173f84d2618b54b6e7ef44ae5557350614bbb5a9797

    SHA512

    9a50f934c199b4415911cae873cebd46f682526290b41a42a882a580fed67c99f5248abfbaa367f20b471564b4cf6d62f28ed2c945206267b37788f94377f167

  • \Users\Admin\AppData\Local\Temp\is-T4IMF.tmp\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-T4IMF.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-T4IMF.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1syug.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/1428-73-0x0000000003150000-0x00000000042DD000-memory.dmp

    Filesize

    17.6MB

  • memory/1428-89-0x0000000003150000-0x00000000042DD000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-91-0x0000000000400000-0x000000000158D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-92-0x00000000019F0000-0x0000000002B7D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-78-0x0000000000400000-0x000000000158D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-77-0x0000000000400000-0x000000000158D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-96-0x0000000000400000-0x000000000158D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-76-0x00000000019F0000-0x0000000002B7D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-74-0x0000000000400000-0x000000000158D000-memory.dmp

    Filesize

    17.6MB

  • memory/1660-86-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/1660-75-0x00000000019F0000-0x0000000002B7D000-memory.dmp

    Filesize

    17.6MB

  • memory/1764-69-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1764-54-0x0000000076261000-0x0000000076263000-memory.dmp

    Filesize

    8KB

  • memory/1764-55-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1764-98-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB