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Analysis

  • max time kernel
    56s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    26/12/2022, 10:21

General

  • Target

    file.exe

  • Size

    2.1MB

  • MD5

    b15b29b122f2a560beca0328a02b63d4

  • SHA1

    ec9b566137ae4973362b17ce8e9d0459902d3c85

  • SHA256

    f825e65ca0525c1a7eafc517d2077859c2d27fd76b7d15bbb6f55892fcba864a

  • SHA512

    aa9c2453b64e2832372c68e1e38b230ac90dd3575dbc012df5785dd0616176158c52b823ece83d14608b6f1748df2682d1b7efd0210ac6d14df2e0f4370b4312

  • SSDEEP

    49152:6Gh08bqoNdSsAS5RBdN0X4xkVodropKX3AJTinSgzxa:6G08WYBWX4kerJETiq

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 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 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:1292
    • C:\Users\Admin\AppData\Local\Temp\is-V3ESI.tmp\is-PKE97.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-V3ESI.tmp\is-PKE97.tmp" /SL4 $70126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1979821 316928
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1188
      • C:\Program Files (x86)\Split Files\SplitFiles121.exe
        "C:\Program Files (x86)\Split Files\SplitFiles121.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1168
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\MQSvdY.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:980
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles121.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles121.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:796
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "SplitFiles121.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Split Files\SplitFiles121.exe

    Filesize

    3.5MB

    MD5

    69e76fbddcf8ac7c490a51b4e8319efb

    SHA1

    99c37adef8cb393692bee535f6d4eb9d357a4b7a

    SHA256

    c29f338c28bc8a86a996c5c3f9db2446d6e800ec65f0bb834f9ce2db17b845d3

    SHA512

    c0668321c5a2360a88aef01a8cee1c6d945dcdee325618688d6a1241ea9e88c3a10812da9df18648c74b02cfb41dbf45af071dbf0a8424b68e0198a8cd8c7dec

  • C:\Program Files (x86)\Split Files\SplitFiles121.exe

    Filesize

    3.5MB

    MD5

    69e76fbddcf8ac7c490a51b4e8319efb

    SHA1

    99c37adef8cb393692bee535f6d4eb9d357a4b7a

    SHA256

    c29f338c28bc8a86a996c5c3f9db2446d6e800ec65f0bb834f9ce2db17b845d3

    SHA512

    c0668321c5a2360a88aef01a8cee1c6d945dcdee325618688d6a1241ea9e88c3a10812da9df18648c74b02cfb41dbf45af071dbf0a8424b68e0198a8cd8c7dec

  • C:\Users\Admin\AppData\Local\Temp\is-V3ESI.tmp\is-PKE97.tmp

    Filesize

    903KB

    MD5

    0e214ed840148aacdcd0cc4792acf0c3

    SHA1

    8731e1007a87b7be4a57db4f84aedab8a212eb37

    SHA256

    42e06dc9acbfbbf3b9d69fb4f841b4153a69ab30d2ba9299e16ca765f271f9ca

    SHA512

    0381cece20c597b47b1622b7f56609c76774612ea31c9ceceab29708181976682195d0935f91e08f455e6dc45cee3d2504fb6c0948480be3c6f8c75e0b59c42f

  • C:\Users\Admin\AppData\Local\Temp\is-V3ESI.tmp\is-PKE97.tmp

    Filesize

    903KB

    MD5

    0e214ed840148aacdcd0cc4792acf0c3

    SHA1

    8731e1007a87b7be4a57db4f84aedab8a212eb37

    SHA256

    42e06dc9acbfbbf3b9d69fb4f841b4153a69ab30d2ba9299e16ca765f271f9ca

    SHA512

    0381cece20c597b47b1622b7f56609c76774612ea31c9ceceab29708181976682195d0935f91e08f455e6dc45cee3d2504fb6c0948480be3c6f8c75e0b59c42f

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

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • \Program Files (x86)\Split Files\SplitFiles121.exe

    Filesize

    3.5MB

    MD5

    69e76fbddcf8ac7c490a51b4e8319efb

    SHA1

    99c37adef8cb393692bee535f6d4eb9d357a4b7a

    SHA256

    c29f338c28bc8a86a996c5c3f9db2446d6e800ec65f0bb834f9ce2db17b845d3

    SHA512

    c0668321c5a2360a88aef01a8cee1c6d945dcdee325618688d6a1241ea9e88c3a10812da9df18648c74b02cfb41dbf45af071dbf0a8424b68e0198a8cd8c7dec

  • \Program Files (x86)\Split Files\SplitFiles121.exe

    Filesize

    3.5MB

    MD5

    69e76fbddcf8ac7c490a51b4e8319efb

    SHA1

    99c37adef8cb393692bee535f6d4eb9d357a4b7a

    SHA256

    c29f338c28bc8a86a996c5c3f9db2446d6e800ec65f0bb834f9ce2db17b845d3

    SHA512

    c0668321c5a2360a88aef01a8cee1c6d945dcdee325618688d6a1241ea9e88c3a10812da9df18648c74b02cfb41dbf45af071dbf0a8424b68e0198a8cd8c7dec

  • \Program Files (x86)\Split Files\SplitFiles121.exe

    Filesize

    3.5MB

    MD5

    69e76fbddcf8ac7c490a51b4e8319efb

    SHA1

    99c37adef8cb393692bee535f6d4eb9d357a4b7a

    SHA256

    c29f338c28bc8a86a996c5c3f9db2446d6e800ec65f0bb834f9ce2db17b845d3

    SHA512

    c0668321c5a2360a88aef01a8cee1c6d945dcdee325618688d6a1241ea9e88c3a10812da9df18648c74b02cfb41dbf45af071dbf0a8424b68e0198a8cd8c7dec

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-V3ESI.tmp\is-PKE97.tmp

    Filesize

    903KB

    MD5

    0e214ed840148aacdcd0cc4792acf0c3

    SHA1

    8731e1007a87b7be4a57db4f84aedab8a212eb37

    SHA256

    42e06dc9acbfbbf3b9d69fb4f841b4153a69ab30d2ba9299e16ca765f271f9ca

    SHA512

    0381cece20c597b47b1622b7f56609c76774612ea31c9ceceab29708181976682195d0935f91e08f455e6dc45cee3d2504fb6c0948480be3c6f8c75e0b59c42f

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

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/1168-75-0x0000000001C80000-0x0000000002E03000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-92-0x0000000001C80000-0x0000000002E03000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-77-0x0000000000400000-0x0000000001583000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-78-0x0000000000400000-0x0000000001583000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-97-0x0000000000400000-0x0000000001583000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-74-0x0000000000400000-0x0000000001583000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-76-0x0000000001C80000-0x0000000002E03000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-91-0x0000000000400000-0x0000000001583000-memory.dmp

    Filesize

    17.5MB

  • memory/1168-86-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/1188-90-0x00000000038B0000-0x0000000004A33000-memory.dmp

    Filesize

    17.5MB

  • memory/1188-73-0x00000000038B0000-0x0000000004A33000-memory.dmp

    Filesize

    17.5MB

  • memory/1292-65-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1292-55-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1292-54-0x0000000074FD1000-0x0000000074FD3000-memory.dmp

    Filesize

    8KB

  • memory/1292-98-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB