Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-09-2024 00:35

General

  • Target

    2024-09-16_504f6b94159653a22d8ca825867d34ac_avoslocker_cobalt-strike_floxif.exe

  • Size

    665KB

  • MD5

    504f6b94159653a22d8ca825867d34ac

  • SHA1

    ea4f87db84f392e85b56b1dc9cf284a5f4194de0

  • SHA256

    c752543b00c8e06ef4226e0867ba9614d8ea7496b344e5d81d3fcf99b1b80568

  • SHA512

    0f272fc1fe4544fc3a4f3e182c25d0418f073a7cfd26eda10b28c997417756b12b791e23a8ab9fc6437b43047a2ee58a98d28dcb86219e222164fa9fd9e03786

  • SSDEEP

    12288:XubKAwafJcLln5QwnVWqqPIBONhxsU/EbBjvrEH73m+Y:XuO90r/xsU/EhrEH73m+Y

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\2024-09-16_504f6b94159653a22d8ca825867d34ac_avoslocker_cobalt-strike_floxif.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-16_504f6b94159653a22d8ca825867d34ac_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:468

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    3KB

    MD5

    de3ef7d4d86df5118a8bd8e82430ce5c

    SHA1

    24bc48bd10d0b697419a5821ae67a4121d7c5971

    SHA256

    b23fa92dd0fde867503be24bf0880eb048d65244ccd4597d7ae4263f1cfbe301

    SHA512

    f064cacb9a7beee72320a8c2ca49f3b1c0c4306e54532d463e628e84339bd8542819c22f0388ecbce3249c4f6a11af9ab6db631080bfb03a70b49bf7f41f4f1d

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

    Filesize

    6KB

    MD5

    f8fbb85cb6ee150e52b379e74708b613

    SHA1

    9aac20be8545d8a96a366e0b7c218cbbf9e92416

    SHA256

    4a097e388d2d426fbb7b91d57236d3dd3ff79252e0e93fc28fbe496fc923aa43

    SHA512

    fc229ae35a5883dd752e5b41f48679162778879c093d38a413435d47ad825bd2bf3041472c6ac71daf9e33e3087fd95a74a959ac6764e6d1d665f1f53661233e

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/468-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/468-61-0x0000000000D80000-0x0000000000E1A000-memory.dmp

    Filesize

    616KB

  • memory/468-63-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB