Analysis

  • max time kernel
    72s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:33

General

  • Target

    1041927cf44db05237d3540c12b9f7612c3f1aa4c191f125033824fc21f39cd4.exe

  • Size

    603KB

  • MD5

    1c6170515824f9c74a0c9d7affe73281

  • SHA1

    b70cffca337d3b8031ce96031188715c52ab2a9c

  • SHA256

    1041927cf44db05237d3540c12b9f7612c3f1aa4c191f125033824fc21f39cd4

  • SHA512

    83c94632cb0a5b3c9d64e134d534837df2ef6c8105121bbba583c8738a02920110525e77abad103ab15d286a90f87f3446a3d3dc51a98cbfcb0992126e494926

  • SSDEEP

    12288:zIny5DYTeC6YH9a/UZrxP2TwxFKIR/g4jYVXco3mqMsA/CTezaAM:bUTeC6JUlxuqR/5fv/CTn

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 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 System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1041927cf44db05237d3540c12b9f7612c3f1aa4c191f125033824fc21f39cd4.exe
    "C:\Users\Admin\AppData\Local\Temp\1041927cf44db05237d3540c12b9f7612c3f1aa4c191f125033824fc21f39cd4.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1776
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1480
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1780
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:536
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:600
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1100
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1068
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1888
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1624
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:948
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:812
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1784

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f2cf08fbf76df7dbca5a2f084aeec4a

            SHA1

            433ec5d530afa91836e395530e820ba4f466a611

            SHA256

            c9a67808cbc6c0bdee7cab4e9bf41d5d634c8a8aa3a2607a6cc02de11402163e

            SHA512

            d68c4924e411b59fcf232786d999128743a8d0e4c94e06cf047ffdf95bf3c8b14e6cf4ff63977d39e2547cd14acf54d16ee0adf351ce34168d8189b9fcbf0792

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7932d8c2f641eb4845e9f9f003b6abf

            SHA1

            1485c8a94cc207c44dae74ebee4f0afcc562dd3f

            SHA256

            f140036fae30be58356e6dd6ea438ca00a6afa5aeb540cc59483175247604231

            SHA512

            eaecb614a85305546dad31899ca5b7c70d1e4c8f74e3e0b734ec72dc34923ad3e18cfde2cebf8bfe111c00bda98b3e29a5228140acc1b7f59c11a65263849633

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4e79ff4545b39cf6b39b400556097522

            SHA1

            9ffb26d21e3fd3535372331bacee4cb59af33671

            SHA256

            ff96aede0a647b89792af8a82d6562c8d55732b63e21e5b4a4181fa760c4cd13

            SHA512

            4d9568b4e5129aa142bacfcd7b184d4e66a5f5ce9f219ce44fbf440d2a4db4df4fb30d8a70013c6374574fd1a207d047768af46350793590efdf1898372a2dbd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            42ac15e262e6ffea14a203e0f030cac1

            SHA1

            167e72f19d7f7d5aa2a0081cf5e820dd0cd17a67

            SHA256

            1d9a336a94f69a885e64bd5c755c2526bdb2a495f4713b4e0f4334f74e8f75fa

            SHA512

            4ff1a8849b2b414300fb22c4628fc074462bffc5265a229e6c49cf663faced3ba2b547f39f8552bb3fefcf2854d77c8af73357b2f98a9cb17a19dfb3a05d2f04

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            42ac15e262e6ffea14a203e0f030cac1

            SHA1

            167e72f19d7f7d5aa2a0081cf5e820dd0cd17a67

            SHA256

            1d9a336a94f69a885e64bd5c755c2526bdb2a495f4713b4e0f4334f74e8f75fa

            SHA512

            4ff1a8849b2b414300fb22c4628fc074462bffc5265a229e6c49cf663faced3ba2b547f39f8552bb3fefcf2854d77c8af73357b2f98a9cb17a19dfb3a05d2f04

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            648c0b4ccccd5b4754163949544e2749

            SHA1

            a4568fafd7dc762e831e47ea3260bc7cde55db92

            SHA256

            1c34a6f24bf508631b4dacfce44d4f64f2419c78351e5f2d6fc5a503e8228011

            SHA512

            70fddf67a8658b58fb1f89291487390246f578121cb3b771d9a3f495b289f951ef01a7cfc56d48504d3f6c7d6cdd056fea7ae291bdd9fe72af2d62014b7ec64b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            648c0b4ccccd5b4754163949544e2749

            SHA1

            a4568fafd7dc762e831e47ea3260bc7cde55db92

            SHA256

            1c34a6f24bf508631b4dacfce44d4f64f2419c78351e5f2d6fc5a503e8228011

            SHA512

            70fddf67a8658b58fb1f89291487390246f578121cb3b771d9a3f495b289f951ef01a7cfc56d48504d3f6c7d6cdd056fea7ae291bdd9fe72af2d62014b7ec64b

          • \Users\Admin\AppData\Local\Temp\nseAF94.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseAF94.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseAF94.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseAF94.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseAF94.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f2cf08fbf76df7dbca5a2f084aeec4a

            SHA1

            433ec5d530afa91836e395530e820ba4f466a611

            SHA256

            c9a67808cbc6c0bdee7cab4e9bf41d5d634c8a8aa3a2607a6cc02de11402163e

            SHA512

            d68c4924e411b59fcf232786d999128743a8d0e4c94e06cf047ffdf95bf3c8b14e6cf4ff63977d39e2547cd14acf54d16ee0adf351ce34168d8189b9fcbf0792

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f2cf08fbf76df7dbca5a2f084aeec4a

            SHA1

            433ec5d530afa91836e395530e820ba4f466a611

            SHA256

            c9a67808cbc6c0bdee7cab4e9bf41d5d634c8a8aa3a2607a6cc02de11402163e

            SHA512

            d68c4924e411b59fcf232786d999128743a8d0e4c94e06cf047ffdf95bf3c8b14e6cf4ff63977d39e2547cd14acf54d16ee0adf351ce34168d8189b9fcbf0792

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7f2cf08fbf76df7dbca5a2f084aeec4a

            SHA1

            433ec5d530afa91836e395530e820ba4f466a611

            SHA256

            c9a67808cbc6c0bdee7cab4e9bf41d5d634c8a8aa3a2607a6cc02de11402163e

            SHA512

            d68c4924e411b59fcf232786d999128743a8d0e4c94e06cf047ffdf95bf3c8b14e6cf4ff63977d39e2547cd14acf54d16ee0adf351ce34168d8189b9fcbf0792

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7932d8c2f641eb4845e9f9f003b6abf

            SHA1

            1485c8a94cc207c44dae74ebee4f0afcc562dd3f

            SHA256

            f140036fae30be58356e6dd6ea438ca00a6afa5aeb540cc59483175247604231

            SHA512

            eaecb614a85305546dad31899ca5b7c70d1e4c8f74e3e0b734ec72dc34923ad3e18cfde2cebf8bfe111c00bda98b3e29a5228140acc1b7f59c11a65263849633

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            c7932d8c2f641eb4845e9f9f003b6abf

            SHA1

            1485c8a94cc207c44dae74ebee4f0afcc562dd3f

            SHA256

            f140036fae30be58356e6dd6ea438ca00a6afa5aeb540cc59483175247604231

            SHA512

            eaecb614a85305546dad31899ca5b7c70d1e4c8f74e3e0b734ec72dc34923ad3e18cfde2cebf8bfe111c00bda98b3e29a5228140acc1b7f59c11a65263849633

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4e79ff4545b39cf6b39b400556097522

            SHA1

            9ffb26d21e3fd3535372331bacee4cb59af33671

            SHA256

            ff96aede0a647b89792af8a82d6562c8d55732b63e21e5b4a4181fa760c4cd13

            SHA512

            4d9568b4e5129aa142bacfcd7b184d4e66a5f5ce9f219ce44fbf440d2a4db4df4fb30d8a70013c6374574fd1a207d047768af46350793590efdf1898372a2dbd

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            42ac15e262e6ffea14a203e0f030cac1

            SHA1

            167e72f19d7f7d5aa2a0081cf5e820dd0cd17a67

            SHA256

            1d9a336a94f69a885e64bd5c755c2526bdb2a495f4713b4e0f4334f74e8f75fa

            SHA512

            4ff1a8849b2b414300fb22c4628fc074462bffc5265a229e6c49cf663faced3ba2b547f39f8552bb3fefcf2854d77c8af73357b2f98a9cb17a19dfb3a05d2f04

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            648c0b4ccccd5b4754163949544e2749

            SHA1

            a4568fafd7dc762e831e47ea3260bc7cde55db92

            SHA256

            1c34a6f24bf508631b4dacfce44d4f64f2419c78351e5f2d6fc5a503e8228011

            SHA512

            70fddf67a8658b58fb1f89291487390246f578121cb3b771d9a3f495b289f951ef01a7cfc56d48504d3f6c7d6cdd056fea7ae291bdd9fe72af2d62014b7ec64b

          • memory/536-64-0x0000000000000000-mapping.dmp

          • memory/584-57-0x0000000000000000-mapping.dmp

          • memory/600-71-0x0000000000000000-mapping.dmp

          • memory/948-88-0x0000000000000000-mapping.dmp

          • memory/1068-81-0x0000000000000000-mapping.dmp

          • memory/1100-77-0x0000000000000000-mapping.dmp

          • memory/1396-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

            Filesize

            8KB

          • memory/1396-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1396-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1396-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1480-61-0x0000000000000000-mapping.dmp

          • memory/1624-87-0x0000000000000000-mapping.dmp

          • memory/1776-58-0x0000000000000000-mapping.dmp

          • memory/1780-62-0x0000000000000000-mapping.dmp

          • memory/1888-82-0x0000000000000000-mapping.dmp