Analysis

  • max time kernel
    52s
  • max time network
    67s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-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 1 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe
    "C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Users\Admin\AppData\Local\Temp\is-KOU8D.tmp\is-AK0VD.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-KOU8D.tmp\is-AK0VD.tmp" /SL4 $B01EC "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:4840
      • C:\Program Files (x86)\guSearcher\gusearcher85.exe
        "C:\Program Files (x86)\guSearcher\gusearcher85.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4812
        • C:\Users\Admin\AppData\Roaming\{140a5be8-2a57-11ed-9414-806e6f6e6963}\m3dBeTwZOqDFZ.exe
          4⤵
          • Executes dropped EXE
          PID:4784
        • 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:4892
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "gusearcher85.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2736

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-KOU8D.tmp\is-AK0VD.tmp

          Filesize

          917KB

          MD5

          f4d82ac5ccb900eb1ced5e8b69fac0c7

          SHA1

          b43f8fa853706d5732c4d77b7a509977ebe78ea3

          SHA256

          a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff

          SHA512

          26fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c

        • C:\Users\Admin\AppData\Local\Temp\is-KOU8D.tmp\is-AK0VD.tmp

          Filesize

          917KB

          MD5

          f4d82ac5ccb900eb1ced5e8b69fac0c7

          SHA1

          b43f8fa853706d5732c4d77b7a509977ebe78ea3

          SHA256

          a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff

          SHA512

          26fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c

        • C:\Users\Admin\AppData\Roaming\{140a5be8-2a57-11ed-9414-806e6f6e6963}\m3dBeTwZOqDFZ.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • C:\Users\Admin\AppData\Roaming\{140a5be8-2a57-11ed-9414-806e6f6e6963}\m3dBeTwZOqDFZ.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • \Users\Admin\AppData\Local\Temp\is-K9C8S.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/2660-157-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-166-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/2660-127-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-128-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-129-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-131-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-134-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-136-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-137-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-138-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-331-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/2660-141-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-140-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-135-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-133-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-132-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-130-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-125-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-123-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-142-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-143-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-144-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-145-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-146-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-147-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-148-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-149-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-150-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-151-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-152-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-153-0x0000000000400000-0x0000000000455000-memory.dmp

          Filesize

          340KB

        • memory/2660-155-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-156-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-124-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-120-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-122-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-139-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-121-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/2660-126-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4812-326-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/4812-309-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/4812-285-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/4812-235-0x0000000000400000-0x0000000001500000-memory.dmp

          Filesize

          17.0MB

        • memory/4840-175-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-185-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-177-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-178-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-179-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-176-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-180-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-181-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-183-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-160-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-173-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-184-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-182-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-163-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-172-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-170-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-171-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-162-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-167-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-174-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-169-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-187-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-186-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-161-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-165-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB

        • memory/4840-164-0x00000000773D0000-0x000000007755E000-memory.dmp

          Filesize

          1.6MB