Analysis

  • max time kernel
    70s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:41

General

  • Target

    38c9e96c7bd7e8300c7d09d314a981dc912c21a5f01aa0f5a60b179e7ba55a24.exe

  • Size

    603KB

  • MD5

    d686243d0ed59e6c56c2cd89c2ebf2bc

  • SHA1

    405c12e51bc7dd255c723564ef4a62b292277a86

  • SHA256

    38c9e96c7bd7e8300c7d09d314a981dc912c21a5f01aa0f5a60b179e7ba55a24

  • SHA512

    15620c8b94719aead22a024d607898d8cffa5ea414433c6bf4f97d35e1911f32908482fbc26258284a6d6c8407484b660d7d79d0bc5ec71a686de33f935b81a7

  • SSDEEP

    12288:7Iny5DYTmIXmOe9OVH0GkelS3AYCX4i1eBKMxAIzq+f:DUTm0mxKUGe77i1AKMxAImO

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\38c9e96c7bd7e8300c7d09d314a981dc912c21a5f01aa0f5a60b179e7ba55a24.exe
    "C:\Users\Admin\AppData\Local\Temp\38c9e96c7bd7e8300c7d09d314a981dc912c21a5f01aa0f5a60b179e7ba55a24.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:1128
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1452
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:276
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1652
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1872
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1640
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1804
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:532
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:920
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1352
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:836
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1488
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1584

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            62ff2cec3b596cdfcb2bc0d35805a5a5

            SHA1

            32083c80a510340d198634506a4dc7fe77dfaff1

            SHA256

            f31a9154a6b46bea1e51d9dcdf2957d84ccb0b785b5b5c7e0bf0139ffa4d68f5

            SHA512

            3c7abb12164f7b98546f9bd5a955d9f8f0f4efbc7ce6454f9e4e69ee9dec3fcc1de652124ddc453ebb91ab338794d45b4a86ad414e3f74fc7893c8580ab1b83b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            9d684f29d61bbb2901252a28b7d0396d

            SHA1

            020641978b21e644175c324d789835e3146da97a

            SHA256

            09971cef265ebfc322e6f80444df7811b88f8afac4000e6a2086594f007ac1f1

            SHA512

            8aa7aca19c0091e9520a46bf0ba4fbf9778e19d1dcd13a97adf8736eab9593e08109feb3e256ca043cbcc73c09941ccf440ceba95ceca568868d582b1a66e61a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            500e132d57283ad8f317d6de720152f9

            SHA1

            24126bda22358f732d12c14cf64e1a21a8885e69

            SHA256

            be635c3e1bda2f83c85894f42dfd8516c08bd7854f3d26beb5c5ecf0f2984aa1

            SHA512

            015ccd7e808658a3cd1ba5ee36bba6320f5095450b1ec112c61b853b66fd07c9bfaa14694d9126d0f182a03f80d86e21dcbc56cd3da71b26675248903f85a01c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0c20fdfabcdad23ebab7cf0e484a1748

            SHA1

            0abf479f0ce0c147323421351d837071063874a0

            SHA256

            20b6d1b732bb0c7644f7620bce419ab6453b3cc7a83315586e3a05fd175e65eb

            SHA512

            2796f80f8561eadd4a8e44279523355b8b04986e90b408f678280a0da29651e746e04e43c893e64df5687f02515e992adc2ba2a168967737a647471ac502d44a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0c20fdfabcdad23ebab7cf0e484a1748

            SHA1

            0abf479f0ce0c147323421351d837071063874a0

            SHA256

            20b6d1b732bb0c7644f7620bce419ab6453b3cc7a83315586e3a05fd175e65eb

            SHA512

            2796f80f8561eadd4a8e44279523355b8b04986e90b408f678280a0da29651e746e04e43c893e64df5687f02515e992adc2ba2a168967737a647471ac502d44a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            656a98b6c8f9f8db27dabced76abe447

            SHA1

            fdbc44ae6dc75d8274401cb30228bdfffa1c7cce

            SHA256

            ca9cb5ccc3ed889307f592974b9c7ac2fe246eb8a880d8537c8a5fc0fa20c6a3

            SHA512

            d7dc519c996c1079ca99b6a2898732f9254aa9badca0ba17fa3f895095a76fae5d5305fdd3e5b5799096133f3f5d9abddd2c2d1377707901f464fe67f265c337

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            656a98b6c8f9f8db27dabced76abe447

            SHA1

            fdbc44ae6dc75d8274401cb30228bdfffa1c7cce

            SHA256

            ca9cb5ccc3ed889307f592974b9c7ac2fe246eb8a880d8537c8a5fc0fa20c6a3

            SHA512

            d7dc519c996c1079ca99b6a2898732f9254aa9badca0ba17fa3f895095a76fae5d5305fdd3e5b5799096133f3f5d9abddd2c2d1377707901f464fe67f265c337

          • \Users\Admin\AppData\Local\Temp\nseF644.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseF644.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseF644.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseF644.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseF644.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            62ff2cec3b596cdfcb2bc0d35805a5a5

            SHA1

            32083c80a510340d198634506a4dc7fe77dfaff1

            SHA256

            f31a9154a6b46bea1e51d9dcdf2957d84ccb0b785b5b5c7e0bf0139ffa4d68f5

            SHA512

            3c7abb12164f7b98546f9bd5a955d9f8f0f4efbc7ce6454f9e4e69ee9dec3fcc1de652124ddc453ebb91ab338794d45b4a86ad414e3f74fc7893c8580ab1b83b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            62ff2cec3b596cdfcb2bc0d35805a5a5

            SHA1

            32083c80a510340d198634506a4dc7fe77dfaff1

            SHA256

            f31a9154a6b46bea1e51d9dcdf2957d84ccb0b785b5b5c7e0bf0139ffa4d68f5

            SHA512

            3c7abb12164f7b98546f9bd5a955d9f8f0f4efbc7ce6454f9e4e69ee9dec3fcc1de652124ddc453ebb91ab338794d45b4a86ad414e3f74fc7893c8580ab1b83b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            62ff2cec3b596cdfcb2bc0d35805a5a5

            SHA1

            32083c80a510340d198634506a4dc7fe77dfaff1

            SHA256

            f31a9154a6b46bea1e51d9dcdf2957d84ccb0b785b5b5c7e0bf0139ffa4d68f5

            SHA512

            3c7abb12164f7b98546f9bd5a955d9f8f0f4efbc7ce6454f9e4e69ee9dec3fcc1de652124ddc453ebb91ab338794d45b4a86ad414e3f74fc7893c8580ab1b83b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            9d684f29d61bbb2901252a28b7d0396d

            SHA1

            020641978b21e644175c324d789835e3146da97a

            SHA256

            09971cef265ebfc322e6f80444df7811b88f8afac4000e6a2086594f007ac1f1

            SHA512

            8aa7aca19c0091e9520a46bf0ba4fbf9778e19d1dcd13a97adf8736eab9593e08109feb3e256ca043cbcc73c09941ccf440ceba95ceca568868d582b1a66e61a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            9d684f29d61bbb2901252a28b7d0396d

            SHA1

            020641978b21e644175c324d789835e3146da97a

            SHA256

            09971cef265ebfc322e6f80444df7811b88f8afac4000e6a2086594f007ac1f1

            SHA512

            8aa7aca19c0091e9520a46bf0ba4fbf9778e19d1dcd13a97adf8736eab9593e08109feb3e256ca043cbcc73c09941ccf440ceba95ceca568868d582b1a66e61a

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            500e132d57283ad8f317d6de720152f9

            SHA1

            24126bda22358f732d12c14cf64e1a21a8885e69

            SHA256

            be635c3e1bda2f83c85894f42dfd8516c08bd7854f3d26beb5c5ecf0f2984aa1

            SHA512

            015ccd7e808658a3cd1ba5ee36bba6320f5095450b1ec112c61b853b66fd07c9bfaa14694d9126d0f182a03f80d86e21dcbc56cd3da71b26675248903f85a01c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0c20fdfabcdad23ebab7cf0e484a1748

            SHA1

            0abf479f0ce0c147323421351d837071063874a0

            SHA256

            20b6d1b732bb0c7644f7620bce419ab6453b3cc7a83315586e3a05fd175e65eb

            SHA512

            2796f80f8561eadd4a8e44279523355b8b04986e90b408f678280a0da29651e746e04e43c893e64df5687f02515e992adc2ba2a168967737a647471ac502d44a

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            656a98b6c8f9f8db27dabced76abe447

            SHA1

            fdbc44ae6dc75d8274401cb30228bdfffa1c7cce

            SHA256

            ca9cb5ccc3ed889307f592974b9c7ac2fe246eb8a880d8537c8a5fc0fa20c6a3

            SHA512

            d7dc519c996c1079ca99b6a2898732f9254aa9badca0ba17fa3f895095a76fae5d5305fdd3e5b5799096133f3f5d9abddd2c2d1377707901f464fe67f265c337

          • memory/268-61-0x0000000000000000-mapping.dmp

          • memory/276-59-0x0000000000000000-mapping.dmp

          • memory/532-81-0x0000000000000000-mapping.dmp

          • memory/836-88-0x0000000000000000-mapping.dmp

          • memory/920-82-0x0000000000000000-mapping.dmp

          • memory/1128-54-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

            Filesize

            8KB

          • memory/1128-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1128-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1128-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1352-87-0x0000000000000000-mapping.dmp

          • memory/1452-58-0x0000000000000000-mapping.dmp

          • memory/1640-71-0x0000000000000000-mapping.dmp

          • memory/1652-62-0x0000000000000000-mapping.dmp

          • memory/1804-77-0x0000000000000000-mapping.dmp

          • memory/1872-64-0x0000000000000000-mapping.dmp