Analysis

  • max time kernel
    144s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    02-11-2024 07:59

General

  • Target

    6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.exe

  • Size

    5.5MB

  • MD5

    195f9c2efc0d02823e2f0c1ec18c9dc9

  • SHA1

    627eb7bcc450c874b64614f5eed660a7b21ab22a

  • SHA256

    6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e

  • SHA512

    c36799769ed47703259d342932b3d64703c3c97b6eeee1ffb6065ef99b3bff57d4c24665023d81a99026137a1aecd86839f7c2d8e59d6427a0c14af2c61d27f6

  • SSDEEP

    98304:CBqdSiNuyEgVmE1judYMBT1ANoFed6XCU3yXGh82XpHsydBQoKwQeyQxf:e6xBkdYMnOo4mCUCXGhPMydioKBZQl

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Socks5systemz family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 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.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.exe
    "C:\Users\Admin\AppData\Local\Temp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2304
    • C:\Users\Admin\AppData\Local\Temp\is-3O3AD.tmp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-3O3AD.tmp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.tmp" /SL5="$401B2,5482980,54272,C:\Users\Admin\AppData\Local\Temp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2060
      • C:\Users\Admin\AppData\Local\AVIToolbox\avitb.exe
        "C:\Users\Admin\AppData\Local\AVIToolbox\avitb.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\AVIToolbox\avitb.exe

    Filesize

    2.7MB

    MD5

    b5a072a1a772ae6ecd44d9e4a366f1db

    SHA1

    dc879169f2b6aebf05144849e177b3fc1219f801

    SHA256

    dbe9b6d969471623c13bd5276287939bbb32ce622cbde7121df5231a5a22509c

    SHA512

    aec917e74b0786e7a4e8496d252f921cc169981f9c548d76386adc485e82d5fcfb3ce0362efc59fca83f1df3eb1f4260f8c9e89241529cdc69b97bc487679929

  • \Users\Admin\AppData\Local\Temp\is-3O3AD.tmp\6339968e387182ce990ade5c97f99c95fdab312c8e775a25dc07272f0f3e1e9e.tmp

    Filesize

    680KB

    MD5

    76729a173e19c1802a93e3cd90ea4db5

    SHA1

    a82b8750d47cbf708319a9c4f67d06988cda9b6e

    SHA256

    2a4dfc93b60198d3228bfb4fa74bbade5bd3339dcc6fcf457334340b9d9e45f6

    SHA512

    2551989b8a85c43df38ff8b834d9dd1ed1ad10b5a3738418351f7d871258b543366c6a5febc376a456c2e489c6a093913f4479708367878e65b9b77ab2a38646

  • \Users\Admin\AppData\Local\Temp\is-V1S99.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-V1S99.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/964-207-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-184-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-226-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-223-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-174-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-175-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-219-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-216-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-181-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-210-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-187-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-190-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-193-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-196-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-197-0x00000000028D0000-0x0000000002972000-memory.dmp

    Filesize

    648KB

  • memory/964-203-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/964-213-0x0000000000400000-0x00000000006B9000-memory.dmp

    Filesize

    2.7MB

  • memory/2060-178-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2060-206-0x0000000003540000-0x00000000037F9000-memory.dmp

    Filesize

    2.7MB

  • memory/2060-9-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2060-173-0x0000000003540000-0x00000000037F9000-memory.dmp

    Filesize

    2.7MB

  • memory/2304-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2304-179-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2304-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB