Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-09-2024 00:27

General

  • Target

    2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe

  • Size

    665KB

  • MD5

    748da875840f2e2c2690b830edfd7397

  • SHA1

    fe0309b4cebb5ce6284e6a9a0bab1d4bc0032e56

  • SHA256

    8c84110b6de408ddc9d9e1b13bfb487543a75d8b4423581652bbfb85ed87acd5

  • SHA512

    ffdcca7cd4590d5456ab869d5e3533a4f073bce683bb9a23c8d23aaef3ee37eb3ae0e99a169dc1ae8960bbc5ed16f0c011a9b1222a25a6b4f07daa6cde546a01

  • SSDEEP

    12288:XubXcIpafJcLln5QwnVWqqPIBONhxsU/EbBjvrEH78x:Xurj90r/xsU/EhrEH7c

Malware Config

Signatures

  • Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Detects Floxif payload 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

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

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\log.txt

    Filesize

    4KB

    MD5

    642bdcf74f46548e175e40fa1aa93dcc

    SHA1

    0b830de84d7ce631dd079bb0ea828f4fbf51b3eb

    SHA256

    fbce0ba5ed55bf684b830d20112d4b6e990b65e3f3cba2e876feffbff4706b48

    SHA512

    7844ab738fabe3eb705b051b16c4a41425b997c9078db565a4d954245f1b874ae6fd12994ca929e4691640e68208a05d915117ba8c1b90671e40a3187d58f877

  • \Program Files\Common Files\System\symsrv.dll

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/1796-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1796-62-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1796-61-0x0000000000C10000-0x0000000000CAA000-memory.dmp

    Filesize

    616KB