Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    04/03/2023, 22:03

General

  • Target

    utweb_installer.exe

  • Size

    1.7MB

  • MD5

    aa28c6ab66f316f9ca24e34171fd79f9

  • SHA1

    9a85cb527dc06146474410e232c83e88c29fc6b5

  • SHA256

    91bfb22e09589199c5b4d5ec665b49d68efff21e59bf4660a3fb9a533afb8192

  • SHA512

    351f0dbd1ce9d0b76238fbe553889f0cce6ab80d25d86dac6fa6202eb41a778b67a0db94a78d2edcdf5a7b78c9336c57c93b774b03607b9913274f0f4154f594

  • SSDEEP

    24576:F4nXubIQGyxbPV0db26wceCmITRfbWWAmCdqotxoBcXRGEtLi+F/WY4O5bY:Fqe3f60rCRNWlmCdqogBcvhtlm

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 12 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 39 IoCs
  • Modifies system certificate store 2 TTPs 12 IoCs
  • Script User-Agent 3 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\is-BS2V9.tmp\utweb_installer.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-BS2V9.tmp\utweb_installer.tmp" /SL5="$70120,897614,818688,C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe" /S
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        PID:1504

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

          Filesize

          61KB

          MD5

          e71c8443ae0bc2e282c73faead0a6dd3

          SHA1

          0c110c1b01e68edfacaeae64781a37b1995fa94b

          SHA256

          95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

          SHA512

          b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

          Filesize

          304B

          MD5

          7ef918f20661fc1a2988c8e08cafa228

          SHA1

          6c694deedf344b60de34cf1d35fd3a2c016f8cbb

          SHA256

          177b937114e238bff1998ff4fad6e0f3061b2d4e6b96ef628bc91ab0073aae6a

          SHA512

          8edda36c77d3045a9ba25cec8d4090e3eeaaac993cc980c6ff2c6d6e10ef6f352e9c65d7437a44af31dbe95d9fd835b0e948e5e5ab4f9309c8ed09972536763f

        • C:\Users\Admin\AppData\Local\Temp\Tar3848.tmp

          Filesize

          161KB

          MD5

          be2bec6e8c5653136d3e72fe53c98aa3

          SHA1

          a8182d6db17c14671c3d5766c72e58d87c0810de

          SHA256

          1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

          SHA512

          0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

        • C:\Users\Admin\AppData\Local\Temp\is-BS2V9.tmp\utweb_installer.tmp

          Filesize

          3.0MB

          MD5

          e09f4c0fbeda6c07ced22ed0e1206fff

          SHA1

          8c5b35af00edb742aa5bee8172ef7c880609ffda

          SHA256

          78f50d6fdff01abe6cfb9cbcea33e5c272aa5f3ed7363ca16fa9c2859a8297d4

          SHA512

          ea66e066f44b62fb5c0aa0601a6bf43b9ca21d884811fd3de6ca9e9f75f856debd6f98080a41490ac2602c5d8deebda09e370ec8d09a554d1550dbf3a958509e

        • C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\Logo.png

          Filesize

          12KB

          MD5

          a00cfe887e254c462ad0c6a6d3fb25b6

          SHA1

          c603a192e23df46c719febf07fd4207c96b1f0f9

          SHA256

          bca0271f56f7384942ff3affb79fa78ccdceabf7dda89ad3c138226da324cdb1

          SHA512

          6dc95a05e2712d85067aa92144f7e00871d2f60e377c6df0253e3ff48a02280d4148578fbbf22018693227bdcc035a8bd391f3c390aed39ca58749f28fc19862

        • C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe

          Filesize

          17.1MB

          MD5

          30b0b419746e27654267388599e4bd40

          SHA1

          70c21f2c70f82727f4af0f1f2c032340c5661d9c

          SHA256

          4e8872dc64e01f97b4d0dd479cdea1e83970fa4aa1524d4d6e385dd07886d60a

          SHA512

          f6558a5096220df6601506057019469aa4234bee95dbd2524dd263ad21ddb8e463d5ed201c76259adc4bc88122160c8cdb362fe47c0d6ed39fae618750835482

        • C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe

          Filesize

          17.1MB

          MD5

          30b0b419746e27654267388599e4bd40

          SHA1

          70c21f2c70f82727f4af0f1f2c032340c5661d9c

          SHA256

          4e8872dc64e01f97b4d0dd479cdea1e83970fa4aa1524d4d6e385dd07886d60a

          SHA512

          f6558a5096220df6601506057019469aa4234bee95dbd2524dd263ad21ddb8e463d5ed201c76259adc4bc88122160c8cdb362fe47c0d6ed39fae618750835482

        • C:\Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe

          Filesize

          17.1MB

          MD5

          30b0b419746e27654267388599e4bd40

          SHA1

          70c21f2c70f82727f4af0f1f2c032340c5661d9c

          SHA256

          4e8872dc64e01f97b4d0dd479cdea1e83970fa4aa1524d4d6e385dd07886d60a

          SHA512

          f6558a5096220df6601506057019469aa4234bee95dbd2524dd263ad21ddb8e463d5ed201c76259adc4bc88122160c8cdb362fe47c0d6ed39fae618750835482

        • C:\Users\Admin\AppData\Local\Temp\nsj89EA.tmp\FindProcDLL.dll

          Filesize

          3KB

          MD5

          b4faf654de4284a89eaf7d073e4e1e63

          SHA1

          8efcfd1ca648e942cbffd27af429784b7fcf514b

          SHA256

          c0948b2ec36a69f82c08935fac4b212238b6792694f009b93b4bdb478c4f26e3

          SHA512

          eef31e332be859cf2a64c928bf3b96442f36fe51f1a372c5628264a0d4b2fc7b3e670323c8fb5ffa72db995b8924da2555198e7de7b4f549d9e0f9e6dbb6b388

        • C:\Users\Admin\AppData\Local\Temp\nsj89EA.tmp\INetC.dll

          Filesize

          24KB

          MD5

          640bff73a5f8e37b202d911e4749b2e9

          SHA1

          9588dd7561ab7de3bca392b084bec91f3521c879

          SHA256

          c1e568e25ec111184deb1b87cfda4bfec529b1abeab39b66539d998012f33502

          SHA512

          39c6c358e2b480c8cbebcc1da683924c8092fb2947f2da4a8df1b0dc1fdda61003d91d12232a436ec88ff4e0995b7f6ee8c6efbdca935eaa984001f7a72fea0a

        • C:\Users\Admin\AppData\Local\Temp\nsj89EA.tmp\System.dll

          Filesize

          12KB

          MD5

          cff85c549d536f651d4fb8387f1976f2

          SHA1

          d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

          SHA256

          8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

          SHA512

          531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

        • C:\Users\Admin\AppData\Local\Temp\nsj89EA.tmp\UAC.dll

          Filesize

          14KB

          MD5

          adb29e6b186daa765dc750128649b63d

          SHA1

          160cbdc4cb0ac2c142d361df138c537aa7e708c9

          SHA256

          2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

          SHA512

          b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

        • C:\Users\Admin\AppData\Local\Temp\nsj89EA.tmp\nsisFirewall.dll

          Filesize

          8KB

          MD5

          f5bf81a102de52a4add21b8a367e54e0

          SHA1

          cf1e76ffe4a3ecd4dad453112afd33624f16751c

          SHA256

          53be5716ad80945cb99681d5dbda60492f5dfb206fbfdb776b769b3eeb18d2c2

          SHA512

          6e280a75f706474ad31b2ce770fa34f54cb598528fac4477c466200a608b79c0f9b84011545595d9ba94331ad08e2f51bd42de91f92379db27686a28ba351256

        • C:\Users\Admin\AppData\Roaming\uTorrent Web\utweb.exe

          Filesize

          6.1MB

          MD5

          4de13af5287ccc91f8f640141e766f1c

          SHA1

          4506b6540c61d2937393b40409d65c2caa4ef640

          SHA256

          fcdfdc2b66f5c923d9b96baff4c14bd1cda92df32acec9d872768877ee016aab

          SHA512

          092733c722bffa55ec834d5dcf0296f44c6c89959bd7ef23cfe3cc1c964b6530b5fb0d14cedb4d005641a6a96170d70b9b6bf880909f74f499e1da178eef9082

        • \Users\Admin\AppData\Local\Temp\is-BS2V9.tmp\utweb_installer.tmp

          Filesize

          3.0MB

          MD5

          e09f4c0fbeda6c07ced22ed0e1206fff

          SHA1

          8c5b35af00edb742aa5bee8172ef7c880609ffda

          SHA256

          78f50d6fdff01abe6cfb9cbcea33e5c272aa5f3ed7363ca16fa9c2859a8297d4

          SHA512

          ea66e066f44b62fb5c0aa0601a6bf43b9ca21d884811fd3de6ca9e9f75f856debd6f98080a41490ac2602c5d8deebda09e370ec8d09a554d1550dbf3a958509e

        • \Users\Admin\AppData\Local\Temp\is-H66SP.tmp\botva2.dll

          Filesize

          37KB

          MD5

          67965a5957a61867d661f05ae1f4773e

          SHA1

          f14c0a4f154dc685bb7c65b2d804a02a0fb2360d

          SHA256

          450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105

          SHA512

          c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

        • \Users\Admin\AppData\Local\Temp\is-H66SP.tmp\utweb_installer.exe

          Filesize

          17.1MB

          MD5

          30b0b419746e27654267388599e4bd40

          SHA1

          70c21f2c70f82727f4af0f1f2c032340c5661d9c

          SHA256

          4e8872dc64e01f97b4d0dd479cdea1e83970fa4aa1524d4d6e385dd07886d60a

          SHA512

          f6558a5096220df6601506057019469aa4234bee95dbd2524dd263ad21ddb8e463d5ed201c76259adc4bc88122160c8cdb362fe47c0d6ed39fae618750835482

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\FindProcDLL.dll

          Filesize

          3KB

          MD5

          b4faf654de4284a89eaf7d073e4e1e63

          SHA1

          8efcfd1ca648e942cbffd27af429784b7fcf514b

          SHA256

          c0948b2ec36a69f82c08935fac4b212238b6792694f009b93b4bdb478c4f26e3

          SHA512

          eef31e332be859cf2a64c928bf3b96442f36fe51f1a372c5628264a0d4b2fc7b3e670323c8fb5ffa72db995b8924da2555198e7de7b4f549d9e0f9e6dbb6b388

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\INetC.dll

          Filesize

          24KB

          MD5

          640bff73a5f8e37b202d911e4749b2e9

          SHA1

          9588dd7561ab7de3bca392b084bec91f3521c879

          SHA256

          c1e568e25ec111184deb1b87cfda4bfec529b1abeab39b66539d998012f33502

          SHA512

          39c6c358e2b480c8cbebcc1da683924c8092fb2947f2da4a8df1b0dc1fdda61003d91d12232a436ec88ff4e0995b7f6ee8c6efbdca935eaa984001f7a72fea0a

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\INetC.dll

          Filesize

          24KB

          MD5

          640bff73a5f8e37b202d911e4749b2e9

          SHA1

          9588dd7561ab7de3bca392b084bec91f3521c879

          SHA256

          c1e568e25ec111184deb1b87cfda4bfec529b1abeab39b66539d998012f33502

          SHA512

          39c6c358e2b480c8cbebcc1da683924c8092fb2947f2da4a8df1b0dc1fdda61003d91d12232a436ec88ff4e0995b7f6ee8c6efbdca935eaa984001f7a72fea0a

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\System.dll

          Filesize

          12KB

          MD5

          cff85c549d536f651d4fb8387f1976f2

          SHA1

          d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

          SHA256

          8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

          SHA512

          531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\System.dll

          Filesize

          12KB

          MD5

          cff85c549d536f651d4fb8387f1976f2

          SHA1

          d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

          SHA256

          8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

          SHA512

          531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\UAC.dll

          Filesize

          14KB

          MD5

          adb29e6b186daa765dc750128649b63d

          SHA1

          160cbdc4cb0ac2c142d361df138c537aa7e708c9

          SHA256

          2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

          SHA512

          b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

        • \Users\Admin\AppData\Local\Temp\nsj89EA.tmp\nsisFirewall.dll

          Filesize

          8KB

          MD5

          f5bf81a102de52a4add21b8a367e54e0

          SHA1

          cf1e76ffe4a3ecd4dad453112afd33624f16751c

          SHA256

          53be5716ad80945cb99681d5dbda60492f5dfb206fbfdb776b769b3eeb18d2c2

          SHA512

          6e280a75f706474ad31b2ce770fa34f54cb598528fac4477c466200a608b79c0f9b84011545595d9ba94331ad08e2f51bd42de91f92379db27686a28ba351256

        • \Users\Admin\AppData\Roaming\uTorrent Web\utweb.exe

          Filesize

          6.1MB

          MD5

          4de13af5287ccc91f8f640141e766f1c

          SHA1

          4506b6540c61d2937393b40409d65c2caa4ef640

          SHA256

          fcdfdc2b66f5c923d9b96baff4c14bd1cda92df32acec9d872768877ee016aab

          SHA512

          092733c722bffa55ec834d5dcf0296f44c6c89959bd7ef23cfe3cc1c964b6530b5fb0d14cedb4d005641a6a96170d70b9b6bf880909f74f499e1da178eef9082

        • \Users\Admin\AppData\Roaming\uTorrent Web\utweb.exe

          Filesize

          6.1MB

          MD5

          4de13af5287ccc91f8f640141e766f1c

          SHA1

          4506b6540c61d2937393b40409d65c2caa4ef640

          SHA256

          fcdfdc2b66f5c923d9b96baff4c14bd1cda92df32acec9d872768877ee016aab

          SHA512

          092733c722bffa55ec834d5dcf0296f44c6c89959bd7ef23cfe3cc1c964b6530b5fb0d14cedb4d005641a6a96170d70b9b6bf880909f74f499e1da178eef9082

        • memory/944-301-0x0000000000400000-0x000000000070F000-memory.dmp

          Filesize

          3.1MB

        • memory/944-64-0x0000000000240000-0x0000000000241000-memory.dmp

          Filesize

          4KB

        • memory/944-190-0x0000000003460000-0x000000000346F000-memory.dmp

          Filesize

          60KB

        • memory/944-221-0x0000000000400000-0x000000000070F000-memory.dmp

          Filesize

          3.1MB

        • memory/944-219-0x0000000000240000-0x0000000000241000-memory.dmp

          Filesize

          4KB

        • memory/944-218-0x0000000003460000-0x000000000346F000-memory.dmp

          Filesize

          60KB

        • memory/944-217-0x0000000000400000-0x000000000070F000-memory.dmp

          Filesize

          3.1MB

        • memory/944-320-0x0000000000400000-0x000000000070F000-memory.dmp

          Filesize

          3.1MB

        • memory/1724-54-0x0000000000400000-0x00000000004D5000-memory.dmp

          Filesize

          852KB

        • memory/1724-196-0x0000000000400000-0x00000000004D5000-memory.dmp

          Filesize

          852KB