Analysis

  • max time kernel
    64s
  • max time network
    66s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04/11/2022, 05:35

General

  • Target

    file.exe

  • Size

    2.8MB

  • MD5

    365cdb873373977e7ecb0f1cfe880a73

  • SHA1

    fbae09f6773465d099776cc111ba76f2a7ec45be

  • SHA256

    f62e231187f95a7f95ea964c2969395b044fecb62ae83f6dfddf260268dc29cd

  • SHA512

    1b7eb9799d6840a214fe1a349f4f1b123a504ed556a1b08befc5b8e10034dbbdb76fc5972c79d063faa1ac7deaa1de0e80e93cecc04a5c87784dd4cd08509e88

  • SSDEEP

    49152:Z2+J+qtK90Kw/ZJVNCEYtbE0EFvUSsDm3BhUJtDqIl2+T1ab2vOlfe+D5A5hq:M+xtKCKw/Z7NCEAREZ7im3UZ51aSmlKW

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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Users\Admin\AppData\Local\Temp\is-QR70K.tmp\is-4HLM9.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QR70K.tmp\is-4HLM9.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2723864 52736
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1020
      • C:\Program Files (x86)\fpSearcher\fpsearcher69.exe
        "C:\Program Files (x86)\fpSearcher\fpsearcher69.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:744
        • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SVbREh8747sk.exe
          4⤵
          • Executes dropped EXE
          PID:1144
        • 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:1928
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "fpsearcher69.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1420

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    4.3MB

    MD5

    8802d31bbb180244abacc15f38348823

    SHA1

    5b4b70a4c71a024359299a4240e1c1923fd0690c

    SHA256

    a9a59d70e198f3609d654c7e651d12526517cb25dd81fea51e2a044099834ff1

    SHA512

    a13318fe4ce3fbb797d28a3c502ae446d7f6b5c78f64df378987697a53b332a51d40e1b689702d0b17bdcfb953416303edbc800bd6aecf03f2ba1555a41a62a0

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

    Filesize

    4.3MB

    MD5

    8802d31bbb180244abacc15f38348823

    SHA1

    5b4b70a4c71a024359299a4240e1c1923fd0690c

    SHA256

    a9a59d70e198f3609d654c7e651d12526517cb25dd81fea51e2a044099834ff1

    SHA512

    a13318fe4ce3fbb797d28a3c502ae446d7f6b5c78f64df378987697a53b332a51d40e1b689702d0b17bdcfb953416303edbc800bd6aecf03f2ba1555a41a62a0

  • C:\Users\Admin\AppData\Local\Temp\is-QR70K.tmp\is-4HLM9.tmp

    Filesize

    657KB

    MD5

    7cd12c54a9751ca6eee6ab0c85fb68f5

    SHA1

    76562e9b7888b6d20d67addb5a90b68b54a51987

    SHA256

    e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

    SHA512

    27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

  • C:\Users\Admin\AppData\Local\Temp\is-QR70K.tmp\is-4HLM9.tmp

    Filesize

    657KB

    MD5

    7cd12c54a9751ca6eee6ab0c85fb68f5

    SHA1

    76562e9b7888b6d20d67addb5a90b68b54a51987

    SHA256

    e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

    SHA512

    27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

  • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SVbREh8747sk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

    Filesize

    4.3MB

    MD5

    8802d31bbb180244abacc15f38348823

    SHA1

    5b4b70a4c71a024359299a4240e1c1923fd0690c

    SHA256

    a9a59d70e198f3609d654c7e651d12526517cb25dd81fea51e2a044099834ff1

    SHA512

    a13318fe4ce3fbb797d28a3c502ae446d7f6b5c78f64df378987697a53b332a51d40e1b689702d0b17bdcfb953416303edbc800bd6aecf03f2ba1555a41a62a0

  • \Users\Admin\AppData\Local\Temp\is-E865H.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-E865H.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-E865H.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-QR70K.tmp\is-4HLM9.tmp

    Filesize

    657KB

    MD5

    7cd12c54a9751ca6eee6ab0c85fb68f5

    SHA1

    76562e9b7888b6d20d67addb5a90b68b54a51987

    SHA256

    e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

    SHA512

    27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

  • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SVbREh8747sk.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/744-83-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/744-79-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/744-71-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/744-72-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/744-73-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/744-75-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/744-86-0x0000000000400000-0x0000000001656000-memory.dmp

    Filesize

    18.3MB

  • memory/1020-70-0x0000000003220000-0x0000000004476000-memory.dmp

    Filesize

    18.3MB

  • memory/1020-74-0x0000000003220000-0x0000000004476000-memory.dmp

    Filesize

    18.3MB

  • memory/1336-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

    Filesize

    8KB

  • memory/1336-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1336-87-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1336-55-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB