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Analysis

  • max time kernel
    110s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2022, 11:31

General

  • Target

    file.exe

  • Size

    2.9MB

  • MD5

    01d6e9421896e8763e89bebbc75865b4

  • SHA1

    bdf5625dc7e94e0845c1b2aed08184ae9389099c

  • SHA256

    05d039aca24c564f72119b2ebc8b81827a98094bafb248a088d0406a10ed7aa3

  • SHA512

    97b2832470f0f11a75162718b7f46f71ab1802e36afb78d1be4bee17508f07c65f05e40e3a1fd5423451a80a1630c75d0ec2f8f9848b5991613f884e8e096b7f

  • SSDEEP

    49152:Z2S1A8Q/jxC8GPXJYdOFfLvI3vsNAZyykq7uSboCCzenB9wRdMM18/q16+Tm9v3D:MSi8Q/9C8mzFfTfNAZS1SoA9w7OqU+aT

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Users\Admin\AppData\Local\Temp\is-0VK6G.tmp\is-CCPPM.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0VK6G.tmp\is-CCPPM.tmp" /SL4 $90058 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2751318 52736
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Program Files (x86)\fpSearcher\fpsearcher69.exe
        "C:\Program Files (x86)\fpSearcher\fpsearcher69.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4068
        • C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5NKqRsSvwe.exe
          4⤵
          • Executes dropped EXE
          PID:4676
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "fpsearcher69.exe" /f & erase "C:\Program Files (x86)\fpSearcher\fpsearcher69.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3500
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "fpsearcher69.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1728

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\fpSearcher\fpsearcher69.exe

    Filesize

    4.3MB

    MD5

    e947d3a2dc5190dfd3b2c7d9667f6593

    SHA1

    49a3047c2040018d36e196e4a0fe71f7361dcfaf

    SHA256

    c003c8e419abb2281c808f4b16c8605be6235b0f9ec26b42f39508130e13b4fd

    SHA512

    2909beea26fc3c9e684c46034a062066de3b9ca291462c9485cf9568dfdaf68b6f97b51071d9e53a09649b38dad6df15142de8c4e1d333f9b15b3f77f6124764

  • C:\Program Files (x86)\fpSearcher\fpsearcher69.exe

    Filesize

    4.3MB

    MD5

    e947d3a2dc5190dfd3b2c7d9667f6593

    SHA1

    49a3047c2040018d36e196e4a0fe71f7361dcfaf

    SHA256

    c003c8e419abb2281c808f4b16c8605be6235b0f9ec26b42f39508130e13b4fd

    SHA512

    2909beea26fc3c9e684c46034a062066de3b9ca291462c9485cf9568dfdaf68b6f97b51071d9e53a09649b38dad6df15142de8c4e1d333f9b15b3f77f6124764

  • C:\Users\Admin\AppData\Local\Temp\is-0VK6G.tmp\is-CCPPM.tmp

    Filesize

    657KB

    MD5

    7cd12c54a9751ca6eee6ab0c85fb68f5

    SHA1

    76562e9b7888b6d20d67addb5a90b68b54a51987

    SHA256

    e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

    SHA512

    27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

  • C:\Users\Admin\AppData\Local\Temp\is-0VK6G.tmp\is-CCPPM.tmp

    Filesize

    657KB

    MD5

    7cd12c54a9751ca6eee6ab0c85fb68f5

    SHA1

    76562e9b7888b6d20d67addb5a90b68b54a51987

    SHA256

    e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

    SHA512

    27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

  • C:\Users\Admin\AppData\Local\Temp\is-PHGSN.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5NKqRsSvwe.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\5NKqRsSvwe.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/4068-148-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/4068-144-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/4068-143-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/4068-142-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/4068-152-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/4068-155-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/4156-132-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4156-138-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4156-156-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB