Analysis

  • max time kernel
    47s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    cdccc7b7367fd8e4cf81c494830ba320ccf9bf7dbd4581aeee72a3d36d4ce49b.exe

  • Size

    599KB

  • MD5

    75b02320db2ad585f5ce8376fada253b

  • SHA1

    74d2a1d9dcfdbb6f09051e172474da37e2b3707e

  • SHA256

    cdccc7b7367fd8e4cf81c494830ba320ccf9bf7dbd4581aeee72a3d36d4ce49b

  • SHA512

    b16671cdf565147a8d7cdc2a3a8e77dca753610d2cb09174c252e47254c755aadb3fa22f16d63065ff109efdc42fbfd1cc168cd76544932064e5f5e491c25142

  • SSDEEP

    12288:bIny5DYTPCauz7R+2XnjhJFbevSpKp4D6zCfOXzKVUAuqxMO:jUTPCauHR+OjhLIpNzS3UAJJ

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\cdccc7b7367fd8e4cf81c494830ba320ccf9bf7dbd4581aeee72a3d36d4ce49b.exe
    "C:\Users\Admin\AppData\Local\Temp\cdccc7b7367fd8e4cf81c494830ba320ccf9bf7dbd4581aeee72a3d36d4ce49b.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:796
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:524
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1308
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1508
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:860
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:320
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1708
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1436
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1576
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1540
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1660
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1320
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1516
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1644

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6676b5b27420e7113ed14d3b5d24c5d

            SHA1

            b4b172ec5e6eefc7b217cd9dcd9658834b49ad31

            SHA256

            ea9f46fb3eef0ce1b0aeca74824474029cd91d4529d3181184ad947241290d74

            SHA512

            d72d35ae162e0e9efa9dacffb114b1eee272a0ff6b8d33fa346fa43e81eb9619c094263fc203d625a825bb5ae58ec62167010e39e2156364422cf80c1fe560f5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2742e39036a02aaf22015256cd40b575

            SHA1

            8c55f3d45eb5ccbcc2dfe0bcec00a56f57517e2b

            SHA256

            3c5c7f120878676943f323b29264447ba421c8ed20094b948b7579262787f5ac

            SHA512

            af21c767dcb6d8a07560fdb5e47bfc65c59d4e7d49b035aebec83a6877efff502b64e63cb28f82cf3555b1ac819ac4a159a5affd18bf6f720456dc9e1a18d4a6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f5d32604385131fa8a83a6488a379257

            SHA1

            d5e32a79b7d13e5d562a5a9eb5534b9032473be3

            SHA256

            fdb18fd5ea49812552c510902642a53564b19ebbf0c41a3c56b2982fc0534b8e

            SHA512

            f51a584263f4f20da8ef6ee5523e4a0afa032e7381af8bd753877aa4cc7c81266dd97099c4a5ceefaf94c98e04a5086cb617eac3843b2936aa7cd234e8e5051d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2ea78e8a778bb3552f186bac068f72b0

            SHA1

            29332e0da82e36fd5a4ebb574723884b7c850a45

            SHA256

            f11275f4c016abbe5c4c9a190b6f244b0a1fcb494cb2b0c43d1985161ac4418e

            SHA512

            f592dbf18b5bb8d2ac725e55cccd8c890aa23e10ca126f61d7a7c028bb2afa0b0c58c72e1f9c48d962e84606abc56755e7e1fbf6a10e4cb6fa672c18382fad34

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2ea78e8a778bb3552f186bac068f72b0

            SHA1

            29332e0da82e36fd5a4ebb574723884b7c850a45

            SHA256

            f11275f4c016abbe5c4c9a190b6f244b0a1fcb494cb2b0c43d1985161ac4418e

            SHA512

            f592dbf18b5bb8d2ac725e55cccd8c890aa23e10ca126f61d7a7c028bb2afa0b0c58c72e1f9c48d962e84606abc56755e7e1fbf6a10e4cb6fa672c18382fad34

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ef93c49d38a384a06dd9bd3a130da48c

            SHA1

            8870339986c2a3f2ef2c16e251cb72c836457641

            SHA256

            67be97a49b319bb309990c1797d9216e8450ecc2eb87c96f8c2fd359a093742f

            SHA512

            b30c32dbd7feeb378846d9e3aaef8c43414cf690254f008bb3d6d675b79ef256d15da7b7ddee81ac9a3ac0b6cec25f88a9764e461daaa11f469e0b7b53761f89

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ef93c49d38a384a06dd9bd3a130da48c

            SHA1

            8870339986c2a3f2ef2c16e251cb72c836457641

            SHA256

            67be97a49b319bb309990c1797d9216e8450ecc2eb87c96f8c2fd359a093742f

            SHA512

            b30c32dbd7feeb378846d9e3aaef8c43414cf690254f008bb3d6d675b79ef256d15da7b7ddee81ac9a3ac0b6cec25f88a9764e461daaa11f469e0b7b53761f89

          • \Users\Admin\AppData\Local\Temp\nsoC610.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoC610.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC610.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC610.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC610.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6676b5b27420e7113ed14d3b5d24c5d

            SHA1

            b4b172ec5e6eefc7b217cd9dcd9658834b49ad31

            SHA256

            ea9f46fb3eef0ce1b0aeca74824474029cd91d4529d3181184ad947241290d74

            SHA512

            d72d35ae162e0e9efa9dacffb114b1eee272a0ff6b8d33fa346fa43e81eb9619c094263fc203d625a825bb5ae58ec62167010e39e2156364422cf80c1fe560f5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6676b5b27420e7113ed14d3b5d24c5d

            SHA1

            b4b172ec5e6eefc7b217cd9dcd9658834b49ad31

            SHA256

            ea9f46fb3eef0ce1b0aeca74824474029cd91d4529d3181184ad947241290d74

            SHA512

            d72d35ae162e0e9efa9dacffb114b1eee272a0ff6b8d33fa346fa43e81eb9619c094263fc203d625a825bb5ae58ec62167010e39e2156364422cf80c1fe560f5

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e6676b5b27420e7113ed14d3b5d24c5d

            SHA1

            b4b172ec5e6eefc7b217cd9dcd9658834b49ad31

            SHA256

            ea9f46fb3eef0ce1b0aeca74824474029cd91d4529d3181184ad947241290d74

            SHA512

            d72d35ae162e0e9efa9dacffb114b1eee272a0ff6b8d33fa346fa43e81eb9619c094263fc203d625a825bb5ae58ec62167010e39e2156364422cf80c1fe560f5

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2742e39036a02aaf22015256cd40b575

            SHA1

            8c55f3d45eb5ccbcc2dfe0bcec00a56f57517e2b

            SHA256

            3c5c7f120878676943f323b29264447ba421c8ed20094b948b7579262787f5ac

            SHA512

            af21c767dcb6d8a07560fdb5e47bfc65c59d4e7d49b035aebec83a6877efff502b64e63cb28f82cf3555b1ac819ac4a159a5affd18bf6f720456dc9e1a18d4a6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2742e39036a02aaf22015256cd40b575

            SHA1

            8c55f3d45eb5ccbcc2dfe0bcec00a56f57517e2b

            SHA256

            3c5c7f120878676943f323b29264447ba421c8ed20094b948b7579262787f5ac

            SHA512

            af21c767dcb6d8a07560fdb5e47bfc65c59d4e7d49b035aebec83a6877efff502b64e63cb28f82cf3555b1ac819ac4a159a5affd18bf6f720456dc9e1a18d4a6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f5d32604385131fa8a83a6488a379257

            SHA1

            d5e32a79b7d13e5d562a5a9eb5534b9032473be3

            SHA256

            fdb18fd5ea49812552c510902642a53564b19ebbf0c41a3c56b2982fc0534b8e

            SHA512

            f51a584263f4f20da8ef6ee5523e4a0afa032e7381af8bd753877aa4cc7c81266dd97099c4a5ceefaf94c98e04a5086cb617eac3843b2936aa7cd234e8e5051d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2ea78e8a778bb3552f186bac068f72b0

            SHA1

            29332e0da82e36fd5a4ebb574723884b7c850a45

            SHA256

            f11275f4c016abbe5c4c9a190b6f244b0a1fcb494cb2b0c43d1985161ac4418e

            SHA512

            f592dbf18b5bb8d2ac725e55cccd8c890aa23e10ca126f61d7a7c028bb2afa0b0c58c72e1f9c48d962e84606abc56755e7e1fbf6a10e4cb6fa672c18382fad34

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            ef93c49d38a384a06dd9bd3a130da48c

            SHA1

            8870339986c2a3f2ef2c16e251cb72c836457641

            SHA256

            67be97a49b319bb309990c1797d9216e8450ecc2eb87c96f8c2fd359a093742f

            SHA512

            b30c32dbd7feeb378846d9e3aaef8c43414cf690254f008bb3d6d675b79ef256d15da7b7ddee81ac9a3ac0b6cec25f88a9764e461daaa11f469e0b7b53761f89

          • memory/320-65-0x0000000000000000-mapping.dmp

          • memory/524-57-0x0000000000000000-mapping.dmp

          • memory/796-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/796-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/796-63-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/796-54-0x0000000074D71000-0x0000000074D73000-memory.dmp

            Filesize

            8KB

          • memory/860-61-0x0000000000000000-mapping.dmp

          • memory/1308-58-0x0000000000000000-mapping.dmp

          • memory/1320-88-0x0000000000000000-mapping.dmp

          • memory/1436-77-0x0000000000000000-mapping.dmp

          • memory/1508-60-0x0000000000000000-mapping.dmp

          • memory/1540-82-0x0000000000000000-mapping.dmp

          • memory/1576-81-0x0000000000000000-mapping.dmp

          • memory/1660-87-0x0000000000000000-mapping.dmp

          • memory/1708-71-0x0000000000000000-mapping.dmp