Analysis

  • max time kernel
    33s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2022, 06:03

General

  • Target
    stub2.exe
  • Size 20.4MB
  • Sample221231-gr2jeshc62
  • SHA256 82b53444cb1607da0d82f371e6976f765a236a1468e88f6385ee24f2e6f5d1bb
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10
upx

Malware Config

Signatures

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 23 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stub2.exe
    "C:\Users\Admin\AppData\Local\Temp\stub2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\stub2.exe
      "C:\Users\Admin\AppData\Local\Temp\stub2.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1704 -s 132
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1116

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\VCRUNTIME140.dll
        • Size 96KB
        • SHA256 d66c3b47091ceb3f8d3cc165a43d285ae919211a0c0fcb74491ee574d8d464f8
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-file-l1-2-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-file-l1-2-0.dll
        • Size 4KB
        • SHA256 b2d983883afd758913a7db54222a2db4bfeb1051b0c0f92e8faae93c0bc90fc4
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-file-l2-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-file-l2-1-0.dll
        • Size 2KB
        • SHA256 3144bccc1385efc1ff204442a5aecc0a990776341a268fad15aa605449fca04a
        • MD5 SHA1 SHA512

        api-ms-win-core-localization-l1-2-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-localization-l1-2-0.dll
        • Size 4KB
        • SHA256 0c62b8ab1e5f30d4a9eadcd412677e0ab5e4e9304f0870a4ee562f08d09ccc7e
        • MD5 SHA1 SHA512

        api-ms-win-core-path-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-path-l1-1-0.dll
        • Size 3KB
        • SHA256 e39ca111d81e6e5d90cf13fa0aee525d8a2740b84d2c5cd378dd69e4f79f8b0f
        • MD5 SHA1 SHA512

        api-ms-win-core-processthreads-l1-1-1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-processthreads-l1-1-1.dll
        • Size 4KB
        • SHA256 053a83b3f8ac76232952bdb8fb5c5067f06ba48f82b474829c25326adbd26361
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-timezone-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-timezone-l1-1-0.dll
        • Size 3KB
        • SHA256 e4d28023eca5bd147ac645048b18bd7272735da10c30c2dbc83cd1c96703d869
        • MD5 SHA1 SHA512

        api-ms-win-crt-conio-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-conio-l1-1-0.dll
        • Size 12KB
        • SHA256 9165248996814b72f6a334750e65994b39f971267ffc95f759e529356fa3125c
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-convert-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-convert-l1-1-0.dll
        • Size 15KB
        • SHA256 4aea1cedd976ef15a47a3433f3a2e176b1c5e495a54497dba27247b35a1b8449
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-environment-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-environment-l1-1-0.dll
        • Size 11KB
        • SHA256 6a3fd4b050f19ec5c53c15544b1f1b1540ac84f6061c0ec353983eb891330fda
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-filesystem-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-filesystem-l1-1-0.dll
        • Size 13KB
        • SHA256 2def5140c289b89c9a27a2112a2cc01ad1a902944c597d6204bed4efbc09ff7a
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-heap-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-heap-l1-1-0.dll
        • Size 12KB
        • SHA256 c4e195d297d163a49514847ef166da614499404d28bc9419e3e6a28a8e03e9b6
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-locale-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-locale-l1-1-0.dll
        • Size 11KB
        • SHA256 fe51064e0728d553d0f3e96967671f7e6ae4ebd35d821679292014dd4c3bb8e3
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-math-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-math-l1-1-0.dll
        • Size 20KB
        • SHA256 2e1664e05c238d529393162f23640a51def436279184d2e2c16cfbf92ab736c1
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-process-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-process-l1-1-0.dll
        • Size 12KB
        • SHA256 52cc325a4c2158b687c95f9702f4be2e3ec41c80207e50f252f5620ba1784649
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-runtime-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-runtime-l1-1-0.dll
        • Size 15KB
        • SHA256 8150a238851d7da74bc8f6f13262a8d6568373dc509f67544ab6a62398f20c4f
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-stdio-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-stdio-l1-1-0.dll
        • Size 17KB
        • SHA256 de44561e4587c588bc140502fd6cd52e5955abeec63d415be38a6d03f35f808f
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-string-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-string-l1-1-0.dll
        • Size 17KB
        • SHA256 038b93e611704cc5b9f70a91ebf06e9db62ef40180ec536d9e5ab68eb4bb1333
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-time-l1-1-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-time-l1-1-0.dll
        • Size 13KB
        • SHA256 957177c4fe21ae182dfe3a2a13a1ff020f143048fc14499ae9856e523605083e
        • MD5 SHA1 SHA512 SSDEEP

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\base_library.zip
        • Size 1.0MB
        • SHA256 93623ec5644c0859e9b5b68f9443cde443195422247cae891dc427c848e885ba
        • MD5 SHA1 SHA512 SSDEEP

        python310.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\python310.dll
        • Size 1.4MB
        • SHA256 35a6266bfad221a17ceaa83d11de51f57ee4461c87749616b9038acadcd4f2e3
        • MD5 SHA1 SHA512 SSDEEP

        ucrtbase.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI19162\ucrtbase.dll
        • Size 971KB
        • SHA256 d4277c54edfeb960b4163f6bec2415297047ed44963cb04c2c91a9e2604f58f6
        • MD5 SHA1 SHA512 SSDEEP

        VCRUNTIME140.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\VCRUNTIME140.dll
        • Size 96KB
        • SHA256 d66c3b47091ceb3f8d3cc165a43d285ae919211a0c0fcb74491ee574d8d464f8
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-file-l1-2-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-file-l1-2-0.dll
        • Size 4KB
        • SHA256 b2d983883afd758913a7db54222a2db4bfeb1051b0c0f92e8faae93c0bc90fc4
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-file-l2-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-file-l2-1-0.dll
        • Size 2KB
        • SHA256 3144bccc1385efc1ff204442a5aecc0a990776341a268fad15aa605449fca04a
        • MD5 SHA1 SHA512

        api-ms-win-core-localization-l1-2-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-localization-l1-2-0.dll
        • Size 4KB
        • SHA256 0c62b8ab1e5f30d4a9eadcd412677e0ab5e4e9304f0870a4ee562f08d09ccc7e
        • MD5 SHA1 SHA512

        api-ms-win-core-path-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-path-l1-1-0.dll
        • Size 3KB
        • SHA256 e39ca111d81e6e5d90cf13fa0aee525d8a2740b84d2c5cd378dd69e4f79f8b0f
        • MD5 SHA1 SHA512

        api-ms-win-core-processthreads-l1-1-1.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-processthreads-l1-1-1.dll
        • Size 4KB
        • SHA256 053a83b3f8ac76232952bdb8fb5c5067f06ba48f82b474829c25326adbd26361
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-core-timezone-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-core-timezone-l1-1-0.dll
        • Size 3KB
        • SHA256 e4d28023eca5bd147ac645048b18bd7272735da10c30c2dbc83cd1c96703d869
        • MD5 SHA1 SHA512

        api-ms-win-crt-conio-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-conio-l1-1-0.dll
        • Size 12KB
        • SHA256 9165248996814b72f6a334750e65994b39f971267ffc95f759e529356fa3125c
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-convert-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-convert-l1-1-0.dll
        • Size 15KB
        • SHA256 4aea1cedd976ef15a47a3433f3a2e176b1c5e495a54497dba27247b35a1b8449
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-environment-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-environment-l1-1-0.dll
        • Size 11KB
        • SHA256 6a3fd4b050f19ec5c53c15544b1f1b1540ac84f6061c0ec353983eb891330fda
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-filesystem-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-filesystem-l1-1-0.dll
        • Size 13KB
        • SHA256 2def5140c289b89c9a27a2112a2cc01ad1a902944c597d6204bed4efbc09ff7a
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-heap-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-heap-l1-1-0.dll
        • Size 12KB
        • SHA256 c4e195d297d163a49514847ef166da614499404d28bc9419e3e6a28a8e03e9b6
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-locale-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-locale-l1-1-0.dll
        • Size 11KB
        • SHA256 fe51064e0728d553d0f3e96967671f7e6ae4ebd35d821679292014dd4c3bb8e3
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-math-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-math-l1-1-0.dll
        • Size 20KB
        • SHA256 2e1664e05c238d529393162f23640a51def436279184d2e2c16cfbf92ab736c1
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-process-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-process-l1-1-0.dll
        • Size 12KB
        • SHA256 52cc325a4c2158b687c95f9702f4be2e3ec41c80207e50f252f5620ba1784649
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-runtime-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-runtime-l1-1-0.dll
        • Size 15KB
        • SHA256 8150a238851d7da74bc8f6f13262a8d6568373dc509f67544ab6a62398f20c4f
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-stdio-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-stdio-l1-1-0.dll
        • Size 17KB
        • SHA256 de44561e4587c588bc140502fd6cd52e5955abeec63d415be38a6d03f35f808f
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-string-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-string-l1-1-0.dll
        • Size 17KB
        • SHA256 038b93e611704cc5b9f70a91ebf06e9db62ef40180ec536d9e5ab68eb4bb1333
        • MD5 SHA1 SHA512 SSDEEP

        api-ms-win-crt-time-l1-1-0.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\api-ms-win-crt-time-l1-1-0.dll
        • Size 13KB
        • SHA256 957177c4fe21ae182dfe3a2a13a1ff020f143048fc14499ae9856e523605083e
        • MD5 SHA1 SHA512 SSDEEP

        python310.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\python310.dll
        • Size 1.4MB
        • SHA256 35a6266bfad221a17ceaa83d11de51f57ee4461c87749616b9038acadcd4f2e3
        • MD5 SHA1 SHA512 SSDEEP

        python310.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\python310.dll
        • Size 1.4MB
        • SHA256 35a6266bfad221a17ceaa83d11de51f57ee4461c87749616b9038acadcd4f2e3
        • MD5 SHA1 SHA512 SSDEEP

        python310.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\python310.dll
        • Size 1.4MB
        • SHA256 35a6266bfad221a17ceaa83d11de51f57ee4461c87749616b9038acadcd4f2e3
        • MD5 SHA1 SHA512 SSDEEP

        ucrtbase.dll

        • Path \Users\Admin\AppData\Local\Temp\_MEI19162\ucrtbase.dll
        • Size 971KB
        • SHA256 d4277c54edfeb960b4163f6bec2415297047ed44963cb04c2c91a9e2604f58f6
        • MD5 SHA1 SHA512 SSDEEP

        memory/1704-103-0x000007FEF5D60000-0x000007FEF61CE000-memory.dmp

        memory/1916-54-0x000007FEFB901000-0x000007FEFB903000-memory.dmp