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Analysis

  • max time kernel
    145s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    10/12/2023, 20:42

General

  • Target

    tuc5.exe

  • Size

    6.9MB

  • MD5

    d1ffc275100ea20b9d1507a3abf50e3e

  • SHA1

    f283be58dd4d72a73c1cbefe60d7c57c4d257a93

  • SHA256

    c515b1f35dbc723a49f32a31a517630a24941631ffac4fa91675c96620ed31be

  • SHA512

    9b053073675d61b185d55e0bc94838dd21e990abd4fdb88cb3218c3c3aadf415e225dc69040ae823b3046bd8d4601f810c60ff38ba1bd71e90861951da11adaf

  • SSDEEP

    196608:sxnTNzjsOzc7TGHscDgcXbIdslX38dgFYJzj:kNztzQlcDPXus98d9Jzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 63 IoCs
  • Runs net.exe
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tuc5.exe
    "C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Users\Admin\AppData\Local\Temp\is-7V2IK.tmp\tuc5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-7V2IK.tmp\tuc5.tmp" /SL5="$40152,7025884,54272,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2004
      • C:\Program Files (x86)\CRTGame\crtgame.exe
        "C:\Program Files (x86)\CRTGame\crtgame.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1908
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1556
        • C:\Program Files (x86)\CRTGame\crtgame.exe
          "C:\Program Files (x86)\CRTGame\crtgame.exe" -s
          3⤵
          • Executes dropped EXE
          PID:2772
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 10
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2744
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 10
            4⤵
              PID:2820

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        425KB

        MD5

        d17c5e7a1e37d5127fffa19e8f5fc8b4

        SHA1

        d179cbee65a91f08fbc9459f59842eef8bf8f536

        SHA256

        5f3f0b1c288a04416bf54092436bc1abb45b8951d44beaff3bd7fb27cfb264cd

        SHA512

        ebda737a87290dd564bb2030ef9968d9819cc0ac9671306d8718995e47a21080c589b18600e694484c956b7d9bfbeb026ed43fa19a9cc60b2a8560ef56599db9

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        372KB

        MD5

        a680c32d32493087ccbdc7de93db485a

        SHA1

        3264c4049f33327e49ef2c8a2a43ffa2d3b243eb

        SHA256

        4f7b1065f6b17a135a5ad0f68829325e51d072ec3b27c0f7ee867fb1effd0756

        SHA512

        ede77387be231f6d58a43380153a6f3ff628c48dbb0139c352a35d306bf3d090ba4b53f48f16652a45848767b67d8618aff59f1b284d89322c764109565b3372

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        283KB

        MD5

        9438a81b423675547f329269a6c8d797

        SHA1

        5441f64ec9f1aaca13283494e654ee1a3a864b50

        SHA256

        d0f392ca3e8ddea42913963b9df003f9bcdd7a2630bcb1d9a02e28972da67b47

        SHA512

        bcc72ff9531fcadc6698b9499f13d61fc24db7aa2791f09f9f640b3c245a7f02997209adb2ff70a221b4f2948b51e2a40eb2650db00b35300827544aa671e6ec

      • C:\Users\Admin\AppData\Local\Temp\is-7V2IK.tmp\tuc5.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • \Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        717KB

        MD5

        4d0a5b77a658cfc827d025ebccedb967

        SHA1

        6949949d98728b445aa5133c79fbf4e0dcb8f8f5

        SHA256

        1064876be7d08a1127aec042875db5e38240ddf7bb75fefa2c13647166df7156

        SHA512

        fa79c957db8476a88ebffc4ce5aff4a7fa0fc307e89e816db1bb6e48c5366d7fdc01fd35b02e01faef97ba83ac9d5088a59659b8874b5d59078d8b875503fc00

      • \Users\Admin\AppData\Local\Temp\is-M56E6.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • \Users\Admin\AppData\Local\Temp\is-M56E6.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • \Users\Admin\AppData\Local\Temp\is-M56E6.tmp\_isetup\_shfoldr.dll

        Filesize

        22KB

        MD5

        92dc6ef532fbb4a5c3201469a5b5eb63

        SHA1

        3e89ff837147c16b4e41c30d6c796374e0b8e62c

        SHA256

        9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

        SHA512

        9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

      • memory/1728-1-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/1728-163-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/1908-153-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/1908-154-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/1908-157-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/1908-158-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2004-164-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/2004-166-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/2004-169-0x00000000038F0000-0x0000000003B0E000-memory.dmp

        Filesize

        2.1MB

      • memory/2004-152-0x00000000038F0000-0x0000000003B0E000-memory.dmp

        Filesize

        2.1MB

      • memory/2004-11-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/2772-177-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-184-0x0000000002A90000-0x0000000002B32000-memory.dmp

        Filesize

        648KB

      • memory/2772-162-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-170-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-171-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-174-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-160-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-180-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-183-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-165-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-189-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-192-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-193-0x0000000002A90000-0x0000000002B32000-memory.dmp

        Filesize

        648KB

      • memory/2772-196-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-199-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-202-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-205-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-209-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2772-212-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB