Analysis

  • max time kernel
    53s
  • max time network
    55s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    20/11/2022, 18:20

General

  • Target

    b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe

  • Size

    2.2MB

  • MD5

    6bbc0008d0440bca202bfe1c4493984d

  • SHA1

    41592d8daa949d0beb2f0191fce447fcd693fcad

  • SHA256

    b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1

  • SHA512

    ce3dfc9949b53ee79709049f894d66fe9593aeccb7ebb22cebad9344a383b8d570d5c43106e5ee55897645023f8503f62aacc002cf2486d63f750250ae2da037

  • SSDEEP

    49152:q2Chz8BY/ZfCqAtexIpJivEyVL/zVUJS6PZkkSKUxVkBaFwnm:rCeNte4J4ZbzVbaDUxVkB04m

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 12 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\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe
    "C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Users\Admin\AppData\Local\Temp\is-RAQLL.tmp\is-Q0N5T.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-RAQLL.tmp\is-Q0N5T.tmp" /SL4 $7012C "C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe" 2070822 318464
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Program Files (x86)\guSearcher\gusearcher85.exe
        "C:\Program Files (x86)\guSearcher\gusearcher85.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1112
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qNFEX7.exe
          4⤵
          • Executes dropped EXE
          PID:916
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "gusearcher85.exe" /f & erase "C:\Program Files (x86)\guSearcher\gusearcher85.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "gusearcher85.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:428

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\guSearcher\gusearcher85.exe

          Filesize

          3.0MB

          MD5

          0b4163b6681f0c12e45565eb3d303e42

          SHA1

          a74e881abdb3baa13272c08aff447e807c362cd0

          SHA256

          da4564fbfc705f4cace8a04cb5e6698a233572343bebf1a5fe79f52689adacad

          SHA512

          c4e959e1818c4079f0540d64869d5f53a89156a6cdcfe1d9a219a064b04e5d4dd4ec37764135f2b740751fbb3a106ff2d7b5dc5f8cd3da72db81d3edca2232c9

        • C:\Program Files (x86)\guSearcher\gusearcher85.exe

          Filesize

          3.0MB

          MD5

          0b4163b6681f0c12e45565eb3d303e42

          SHA1

          a74e881abdb3baa13272c08aff447e807c362cd0

          SHA256

          da4564fbfc705f4cace8a04cb5e6698a233572343bebf1a5fe79f52689adacad

          SHA512

          c4e959e1818c4079f0540d64869d5f53a89156a6cdcfe1d9a219a064b04e5d4dd4ec37764135f2b740751fbb3a106ff2d7b5dc5f8cd3da72db81d3edca2232c9

        • C:\Users\Admin\AppData\Local\Temp\is-RAQLL.tmp\is-Q0N5T.tmp

          Filesize

          917KB

          MD5

          f4d82ac5ccb900eb1ced5e8b69fac0c7

          SHA1

          b43f8fa853706d5732c4d77b7a509977ebe78ea3

          SHA256

          a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff

          SHA512

          26fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c

        • C:\Users\Admin\AppData\Local\Temp\is-RAQLL.tmp\is-Q0N5T.tmp

          Filesize

          917KB

          MD5

          f4d82ac5ccb900eb1ced5e8b69fac0c7

          SHA1

          b43f8fa853706d5732c4d77b7a509977ebe78ea3

          SHA256

          a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff

          SHA512

          26fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c

        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qNFEX7.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • \Program Files (x86)\guSearcher\gusearcher85.exe

          Filesize

          3.0MB

          MD5

          0b4163b6681f0c12e45565eb3d303e42

          SHA1

          a74e881abdb3baa13272c08aff447e807c362cd0

          SHA256

          da4564fbfc705f4cace8a04cb5e6698a233572343bebf1a5fe79f52689adacad

          SHA512

          c4e959e1818c4079f0540d64869d5f53a89156a6cdcfe1d9a219a064b04e5d4dd4ec37764135f2b740751fbb3a106ff2d7b5dc5f8cd3da72db81d3edca2232c9

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

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-RAQLL.tmp\is-Q0N5T.tmp

          Filesize

          917KB

          MD5

          f4d82ac5ccb900eb1ced5e8b69fac0c7

          SHA1

          b43f8fa853706d5732c4d77b7a509977ebe78ea3

          SHA256

          a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff

          SHA512

          26fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c

        • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qNFEX7.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • memory/1112-71-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/1112-85-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/1112-72-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/1112-73-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/1112-77-0x0000000010000000-0x000000001001B000-memory.dmp

          Filesize

          108KB

        • memory/1112-82-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/1576-54-0x0000000075C81000-0x0000000075C83000-memory.dmp

          Filesize

          8KB

        • memory/1576-65-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/1576-55-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/1576-86-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/1620-70-0x0000000003260000-0x0000000004360000-memory.dmp

          Filesize

          17.0MB

        • memory/1620-81-0x0000000003260000-0x0000000004360000-memory.dmp

          Filesize

          17.0MB