Analysis

  • max time kernel
    119s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    02/11/2023, 22:57

General

  • Target

    NEAS.b4bfac5f9a637d0461b31445bb6a4ee0_JC.exe

  • Size

    21KB

  • MD5

    b4bfac5f9a637d0461b31445bb6a4ee0

  • SHA1

    46fce7e7a244b65baa2533804a7af3a5dc367859

  • SHA256

    7969d72cccec2f0a6af5d9ff160612d47ada247b572a710432db7b7837200f94

  • SHA512

    1ee4c933c3746f5971fdaeb16f5c1d93a451aad9da6995dc431e135116a2b0892c494775ca4d8161d766e2ec9465e801d7f387c3c0eec816a3f4fd7c41cd3d62

  • SSDEEP

    192:gkNKI7bn0YNFniGx1lj6TxWKCF394j9Zc+daPhr6Z3fR589qOye+jDcN8EBrGhh2:gk7RD1TKKtQDo5r6Z3E9q/e+vFEBj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.b4bfac5f9a637d0461b31445bb6a4ee0_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.b4bfac5f9a637d0461b31445bb6a4ee0_JC.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\opera_autoupdate.exe
      "C:\Users\Admin\AppData\Local\Temp\opera_autoupdate.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:2704

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Cab1844.tmp

          Filesize

          61KB

          MD5

          f3441b8572aae8801c04f3060b550443

          SHA1

          4ef0a35436125d6821831ef36c28ffaf196cda15

          SHA256

          6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

          SHA512

          5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

        • C:\Users\Admin\AppData\Local\Temp\Tar1895.tmp

          Filesize

          163KB

          MD5

          9441737383d21192400eca82fda910ec

          SHA1

          725e0d606a4fc9ba44aa8ffde65bed15e65367e4

          SHA256

          bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

          SHA512

          7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

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

          Filesize

          22KB

          MD5

          03bec8fe042b5d41fdf1efd91a4fd963

          SHA1

          bf9ea09f409ab6a9b9350c335ff7393deb5fc19c

          SHA256

          a17610aacf9ec9192a2b7a139d76ccac22704c3cc059849f954472a01dfc9c01

          SHA512

          31af4eb2ebe29e82f197d9b0434343976d9dc18c028418a7a610945fc91df20cf8c8bb66d765cacecdb5a9fc4d021a47e7fb0471a9b3253e3c4d272c051cee8a

        • memory/1696-0-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB