Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    16-08-2024 03:13

General

  • Target

    5ef07ec4f5f42128706936eb0abe9770N.exe

  • Size

    5.7MB

  • MD5

    5ef07ec4f5f42128706936eb0abe9770

  • SHA1

    8bfbba9ea31ada251b235b26896d14f2badbe940

  • SHA256

    1fbbd262a98b6cdd4b29c9bf57688be2ff135925973850cc006d67f2ba1cd711

  • SHA512

    207ef5e28e21a18e0547b639038f4c677ef8f647f0ac765030b4caccabfa33f711957b5bc8eef2df1723595afd3f0c21045d205dcdf301ecf4ef607709be17ec

  • SSDEEP

    98304:j6Pq7UzmNZbDsmKZZYP49o18frP3wbzWFimaI7dlZ1X6:E6NZbAjgbzWFimaI7dlPX6

Malware Config

Signatures

  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 19 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 22 IoCs
  • Modifies registry class 19 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ef07ec4f5f42128706936eb0abe9770N.exe
    "C:\Users\Admin\AppData\Local\Temp\5ef07ec4f5f42128706936eb0abe9770N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\IDMShellExt64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1316
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\IDMShellExt64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2124
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\IDMIECC64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2220
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\IDMGetAll64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2684
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\downlWithIDM64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2208

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Common Files\System\symsrv.dll.000

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • \Users\Admin\AppData\Local\Temp\A1D26E2\9444B3CA88.tmp

    Filesize

    5.6MB

    MD5

    d2d40a87cb753e5c433abd5501cee68a

    SHA1

    5ace63640bf7a44c9fdceee961b4e1530397c03b

    SHA256

    8a65e1501d75372b81250319e09b3602699f51b145bbce06d9fe3c21babc9edf

    SHA512

    7e0b39b9ae2c57713417d3daa6b20f164690ea9b826da103c0815113c33c2dff80df10f8f652259b31e8113f7d12be4d56af3e424ac61fb2db72bcc061059278

  • memory/1316-14-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1316-16-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2124-28-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2124-31-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2208-34-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2208-37-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2220-29-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2220-39-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2684-41-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2684-35-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-20-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-49-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-26-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB

  • memory/2696-19-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB

  • memory/2696-18-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-45-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-44-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB

  • memory/2696-27-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-48-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB

  • memory/2696-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-53-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-58-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2696-66-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB

  • memory/2696-76-0x0000000000ED0000-0x0000000001481000-memory.dmp

    Filesize

    5.7MB