Analysis

  • max time kernel
    118s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 12:26

General

  • Target

    0b649165969dcc070c6b4b94d8443a88b2b13e96276a81cd93077d8256370368N.exe

  • Size

    1.5MB

  • MD5

    c8ec2d4fa3692c5552eae6d40841b8a0

  • SHA1

    736098d91d6f4920493ca99d541343f0d3472a52

  • SHA256

    0b649165969dcc070c6b4b94d8443a88b2b13e96276a81cd93077d8256370368

  • SHA512

    f76aceb547bfd64492290a36350c13d79d74c6306dd679e551c66ac3d8f7effc4adbd30a77e70bb8b4c74d6c8ad37c9e00a56b743e35ae343cd74d7671a1b5da

  • SSDEEP

    24576:vH3q6cPO6Wf6VoGvwRdQeQAwhcJaLpL2Q7tkrEH7B:f66cXchGvwzQeQAweJaNCQ7t1

Malware Config

Signatures

  • Floxif family
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • UPX packed file 9 IoCs

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

  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b649165969dcc070c6b4b94d8443a88b2b13e96276a81cd93077d8256370368N.exe
    "C:\Users\Admin\AppData\Local\Temp\0b649165969dcc070c6b4b94d8443a88b2b13e96276a81cd93077d8256370368N.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2616
    • C:\Program Files (x86)\win\msn.exe
      "C:\Program Files (x86)\win\msn.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\win\msn.exe.tmp

    Filesize

    1.5MB

    MD5

    e204ecf424069d15ce6028765a3f69d8

    SHA1

    d424e2cdebcb9bf1b53af622a861e560b5ab91e1

    SHA256

    42bff7859d04530a8996ec5db51d1b9713c098079a6fede6c566aea9644c1113

    SHA512

    563859787a95099bee78150544d59da9f824abc5bf44e68aa8f6a341e9101ad56a20b861cc656eefe3ddb3710a2a9cf40a913a4118fd8e9580f8830eab13fd1f

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • C:\Users\Admin\AppData\Local\Temp\A1D26E2\98C5508A38.tmp

    Filesize

    1.4MB

    MD5

    ae8e1122371d9d0d98c6259b6c771fe4

    SHA1

    72fcb7b2d300ec36133fb935edda8b1c2c098518

    SHA256

    abea9b857334fca1cd801bcc228c6aaece3f123f57f618da1b4756e449a2445b

    SHA512

    408730de3487c455d63da5c54e08061257726e56329db77e882624032579badc185f497dba12e2ef1cc261c4c262a4790dcfa19dc1afa46ab50a6ceb39ae2085

  • \??\c:\progra~1\common~1\system\symsrv.dll.000

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

  • memory/1992-65-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-69-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-89-0x00000000033A0000-0x000000000355D000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-88-0x00000000033A0000-0x000000000355D000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-79-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1992-75-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-73-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-33-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-74-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1992-70-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-66-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-39-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1992-60-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-51-0x00000000033A0000-0x000000000355D000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-50-0x00000000033A0000-0x000000000355D000-memory.dmp

    Filesize

    1.7MB

  • memory/1992-61-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1992-54-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-55-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-59-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/1992-58-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1992-62-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/2616-5-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2616-12-0x0000000076635000-0x0000000076636000-memory.dmp

    Filesize

    4KB

  • memory/2616-0-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/2616-40-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/2616-16-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/2616-41-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/2616-42-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2616-13-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/2616-20-0x0000000076635000-0x0000000076636000-memory.dmp

    Filesize

    4KB

  • memory/2616-21-0x0000000076620000-0x0000000076683000-memory.dmp

    Filesize

    396KB

  • memory/2616-18-0x0000000000400000-0x00000000005BD000-memory.dmp

    Filesize

    1.7MB

  • memory/2616-17-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB