Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 20:37

General

  • Target

    kos1.exe

  • Size

    1.4MB

  • MD5

    85b698363e74ba3c08fc16297ddc284e

  • SHA1

    171cfea4a82a7365b241f16aebdb2aad29f4f7c0

  • SHA256

    78efcbb0c6eb6a4c76c036adc65154b8ff028849f79d508e45babfb527cb7cfe

  • SHA512

    7e4816c43e0addba088709948e8aedc9e39d6802c74a75cfbc2a0e739b44c5b5eef2bb2453b7032c758b0bdb38e4e7a598aa29be015796361b81d7f9e8027796

  • SSDEEP

    24576:uS7LJeESj3RxrDKaWrnuzzBv7oV2Ev20sYoh9nhhM/vacAVoZFjo:T7LJqjr/KaWrn4Ev20m9h8ZF

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 16 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 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kos1.exe
    "C:\Users\Admin\AppData\Local\Temp\kos1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\set16.exe
      "C:\Users\Admin\AppData\Local\Temp\set16.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp" /SL4 $90124 "C:\Users\Admin\AppData\Local\Temp\set16.exe" 1232936 52224
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:2256
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 8
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2172
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 8
            5⤵
              PID:2728
          • C:\Program Files (x86)\PA Previewer\previewer.exe
            "C:\Program Files (x86)\PA Previewer\previewer.exe" -i
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:584
          • C:\Program Files (x86)\PA Previewer\previewer.exe
            "C:\Program Files (x86)\PA Previewer\previewer.exe" -s
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2772
      • C:\Users\Admin\AppData\Local\Temp\kos.exe
        "C:\Users\Admin\AppData\Local\Temp\kos.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2884

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • C:\Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • C:\Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp

            Filesize

            647KB

            MD5

            2fba5642cbcaa6857c3995ccb5d2ee2a

            SHA1

            91fe8cd860cba7551fbf78bc77cc34e34956e8cc

            SHA256

            ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa

            SHA512

            30613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c

          • C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp

            Filesize

            647KB

            MD5

            2fba5642cbcaa6857c3995ccb5d2ee2a

            SHA1

            91fe8cd860cba7551fbf78bc77cc34e34956e8cc

            SHA256

            ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa

            SHA512

            30613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c

          • C:\Users\Admin\AppData\Local\Temp\kos.exe

            Filesize

            8KB

            MD5

            076ab7d1cc5150a5e9f8745cc5f5fb6c

            SHA1

            7b40783a27a38106e2cc91414f2bc4d8b484c578

            SHA256

            d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90

            SHA512

            75e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b

          • C:\Users\Admin\AppData\Local\Temp\kos.exe

            Filesize

            8KB

            MD5

            076ab7d1cc5150a5e9f8745cc5f5fb6c

            SHA1

            7b40783a27a38106e2cc91414f2bc4d8b484c578

            SHA256

            d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90

            SHA512

            75e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b

          • C:\Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • C:\Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Program Files (x86)\PA Previewer\previewer.exe

            Filesize

            1.9MB

            MD5

            27b85a95804a760da4dbee7ca800c9b4

            SHA1

            f03136226bf3dd38ba0aa3aad1127ccab380197c

            SHA256

            f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245

            SHA512

            e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7

          • \Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp

            Filesize

            647KB

            MD5

            2fba5642cbcaa6857c3995ccb5d2ee2a

            SHA1

            91fe8cd860cba7551fbf78bc77cc34e34956e8cc

            SHA256

            ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa

            SHA512

            30613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c

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

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • \Users\Admin\AppData\Local\Temp\is-OGVRG.tmp\_isetup\_isdecmp.dll

            Filesize

            32KB

            MD5

            b4786eb1e1a93633ad1b4c112514c893

            SHA1

            734750b771d0809c88508e4feb788d7701e6dada

            SHA256

            2ae4169f721beb389a661e6dbb18bc84ef38556af1f46807da9d87aec2a6f06f

            SHA512

            0882d2aa163ece22796f837111db0d55158098035005e57cd2e9b8d59dc2e582207840bf98bee534b81c368acf60ab5d8ecbe762209273bda067a215cdb2c0c6

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

            Filesize

            22KB

            MD5

            92dc6ef532fbb4a5c3201469a5b5eb63

            SHA1

            3e89ff837147c16b4e41c30d6c796374e0b8e62c

            SHA256

            9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

            SHA512

            9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

            Filesize

            22KB

            MD5

            92dc6ef532fbb4a5c3201469a5b5eb63

            SHA1

            3e89ff837147c16b4e41c30d6c796374e0b8e62c

            SHA256

            9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

            SHA512

            9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

          • \Users\Admin\AppData\Local\Temp\kos.exe

            Filesize

            8KB

            MD5

            076ab7d1cc5150a5e9f8745cc5f5fb6c

            SHA1

            7b40783a27a38106e2cc91414f2bc4d8b484c578

            SHA256

            d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90

            SHA512

            75e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b

          • \Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • \Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • \Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • \Users\Admin\AppData\Local\Temp\set16.exe

            Filesize

            1.4MB

            MD5

            22d5269955f256a444bd902847b04a3b

            SHA1

            41a83de3273270c3bd5b2bd6528bdc95766aa268

            SHA256

            ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd

            SHA512

            d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c

          • memory/584-65-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/584-62-0x0000000000CC0000-0x0000000000EB1000-memory.dmp

            Filesize

            1.9MB

          • memory/584-63-0x0000000000CC0000-0x0000000000EB1000-memory.dmp

            Filesize

            1.9MB

          • memory/584-58-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/584-68-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/584-69-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2256-57-0x0000000003720000-0x0000000003911000-memory.dmp

            Filesize

            1.9MB

          • memory/2256-84-0x0000000003720000-0x0000000003911000-memory.dmp

            Filesize

            1.9MB

          • memory/2256-81-0x0000000000400000-0x00000000004B0000-memory.dmp

            Filesize

            704KB

          • memory/2256-76-0x0000000003720000-0x0000000003911000-memory.dmp

            Filesize

            1.9MB

          • memory/2256-75-0x0000000003720000-0x0000000003911000-memory.dmp

            Filesize

            1.9MB

          • memory/2704-19-0x0000000000400000-0x0000000000413000-memory.dmp

            Filesize

            76KB

          • memory/2704-64-0x0000000000400000-0x0000000000413000-memory.dmp

            Filesize

            76KB

          • memory/2772-79-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-110-0x0000000000D90000-0x0000000000DD9000-memory.dmp

            Filesize

            292KB

          • memory/2772-128-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-125-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-123-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-120-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-77-0x0000000000DF0000-0x0000000000FE1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-78-0x0000000000DF0000-0x0000000000FE1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-116-0x0000000000D90000-0x0000000000DD9000-memory.dmp

            Filesize

            292KB

          • memory/2772-115-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-83-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-108-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-85-0x0000000000DF0000-0x0000000000FE1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-86-0x0000000000DF0000-0x0000000000FE1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-90-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-93-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-97-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-99-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-102-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-105-0x0000000000400000-0x00000000005F1000-memory.dmp

            Filesize

            1.9MB

          • memory/2772-109-0x0000000000D90000-0x0000000000DD9000-memory.dmp

            Filesize

            292KB

          • memory/2884-44-0x000000001B000000-0x000000001B080000-memory.dmp

            Filesize

            512KB

          • memory/2884-72-0x000000001B000000-0x000000001B080000-memory.dmp

            Filesize

            512KB

          • memory/2884-36-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

            Filesize

            9.9MB

          • memory/2884-67-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

            Filesize

            9.9MB

          • memory/2884-27-0x00000000011A0000-0x00000000011A8000-memory.dmp

            Filesize

            32KB

          • memory/3020-0-0x00000000740D0000-0x00000000747BE000-memory.dmp

            Filesize

            6.9MB

          • memory/3020-1-0x00000000003A0000-0x0000000000514000-memory.dmp

            Filesize

            1.5MB

          • memory/3020-18-0x00000000740D0000-0x00000000747BE000-memory.dmp

            Filesize

            6.9MB