Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    11/12/2023, 18:58

General

  • Target

    tuc5.exe

  • Size

    7.5MB

  • MD5

    338541e642a4cf6f111296f49e5839e4

  • SHA1

    5c61c2662070995fbf22ef25c0a623d7c90624af

  • SHA256

    8a5e92a2abef83798bf150c49e4b3e34af2f9104c0cd0d4a2c382b9c9b8b43d6

  • SHA512

    e167572a6f952af80ee7b3246cdc544fb54e6d1c12e4303c29591a51c61007fcbfc01af0c449ea9bed8372421ec99966ff25dcfa0725095c419a25e4e59961b1

  • SSDEEP

    196608:hO78pimeIjZMmsj7bXzjl3iT1A9SG7ul2xdVNWiYmJE6RI6zj:E78pimNjMDzjl3dQAdVN1YyRPzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Unexpected DNS network traffic destination 2 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:2032
    • C:\Users\Admin\AppData\Local\Temp\is-6C3HJ.tmp\tuc5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-6C3HJ.tmp\tuc5.tmp" /SL5="$50026,7611198,68096,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:1876
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:2548
        • C:\Program Files (x86)\PlayGIF\gifplayer.exe
          "C:\Program Files (x86)\PlayGIF\gifplayer.exe" -i
          3⤵
          • Executes dropped EXE
          PID:1968
        • C:\Program Files (x86)\PlayGIF\gifplayer.exe
          "C:\Program Files (x86)\PlayGIF\gifplayer.exe" -s
          3⤵
          • Executes dropped EXE
          PID:1356
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1964
    • C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 11
      1⤵
        PID:1524

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        468KB

        MD5

        208c3a3331104c8ed23a3569b9435aa1

        SHA1

        15f2d73415361d331c9d9e777efa401e8d7166f7

        SHA256

        ef955c45c0d3fdd23aa6a7b4ee4f175e1e2b23b89b8e711a46d8df7d1b54d1c5

        SHA512

        baa888c5cd90a5bd218ecfe69b5989243a8d0633b155f1696d2be3e25abcc6e96200b880f4d7d54cd02436556dfc2878dc5f882c0b5d740a4f25e737dfd71d8b

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        60KB

        MD5

        e666c9049892e413606b2dd0eca89734

        SHA1

        f003f174f7978ae17fd236682e76c0f42ca1a1b2

        SHA256

        8257f17221c914e9f53551e9f2cd72868bde7087cd7b6e752a623e03bb47929a

        SHA512

        7f5307f14cadc563db7eb8496d40c030c80ad6244838b7d1687491297a5786e1a2936f66bde833ed3eb590e0b2a5f890296405e6436c255d531b7faba12d3aab

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        71KB

        MD5

        fc85beb4141968e21568ca379999e0bd

        SHA1

        8721419d133088c86ec5a521236f0e341f7797ee

        SHA256

        f7270234c8c3315d627c12b9b84349d4bf24fd77dfb6f0dd98c6a632040ba9d0

        SHA512

        b417de46a5c531c31f1b00a194597b0e0a968402a36bd038881b9cecdde0e64597f8672958fb250b1da90093f365481a26316ecf28a2e42c10ba5c5437ce023c

      • \Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        1.4MB

        MD5

        29a06e80e4228721b6ff5e9096bcdd55

        SHA1

        d859faa8a1a15f885ff6f0969b1cb2f297629923

        SHA256

        95eed7cbea556fca64a8c28f775b96bfd3cab4e5c02928462616dd62b3d6c6f3

        SHA512

        cc177dc78a85e410097977149c99a95c3d1f2dc465152466635e3302728025d76e7a1798136e2517122af0042a6b6adaec2527e5d3b51e607ca3f1458c3525c6

      • \Users\Admin\AppData\Local\Temp\is-6C3HJ.tmp\tuc5.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

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

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

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

        Filesize

        22KB

        MD5

        92dc6ef532fbb4a5c3201469a5b5eb63

        SHA1

        3e89ff837147c16b4e41c30d6c796374e0b8e62c

        SHA256

        9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

        SHA512

        9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

      • memory/1356-180-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-189-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-211-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-208-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-205-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-202-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-160-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-199-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-196-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-162-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-193-0x00000000027A0000-0x000000000283E000-memory.dmp

        Filesize

        632KB

      • memory/1356-192-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-165-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-184-0x00000000027A0000-0x000000000283E000-memory.dmp

        Filesize

        632KB

      • memory/1356-183-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-170-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-171-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-174-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1356-177-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1876-166-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/1876-167-0x0000000003740000-0x00000000039A6000-memory.dmp

        Filesize

        2.4MB

      • memory/1876-164-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/1876-18-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/1876-151-0x0000000003740000-0x00000000039A6000-memory.dmp

        Filesize

        2.4MB

      • memory/1968-153-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1968-154-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1968-158-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/1968-157-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/2032-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2032-163-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2032-3-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB