Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-07-2024 19:10

General

  • Target

    dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae.exe

  • Size

    93KB

  • MD5

    cda76c5daf293a188eb6d41fb9d989ca

  • SHA1

    d84c12c503c5075d6b132036753294dda0e1c400

  • SHA256

    dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae

  • SHA512

    902caf0767009dfa3f2fd24941aa19cf905eb5f7a418e431060494e49b561c4f88da315bb97bcfd3aa1d50145f38a5f63eeae444b078eb690c545eb216e11f08

  • SSDEEP

    768:9Y3Q5yD9O/pBcxYsbae6GIXb9pDX2t98PL0OXLeuXxrjEtCdnl2pi1Rz4Rk3+sGS:P5IOx6baIa9RZj00ljEwzGi1dDaDcgS

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 2 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae.exe
    "C:\Users\Admin\AppData\Local\Temp\dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae.exe"
    1⤵
    • Drops startup file
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3636
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae.exe" "dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      PID:4976
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4216
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    PID:4236
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    PID:2612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Umbrella.flv.exe

    Filesize

    93KB

    MD5

    cda76c5daf293a188eb6d41fb9d989ca

    SHA1

    d84c12c503c5075d6b132036753294dda0e1c400

    SHA256

    dfc31dbf4e5c1233029d8e9a9bdfc15d4fa5b08dbac745d9b73d49d5eaf8f1ae

    SHA512

    902caf0767009dfa3f2fd24941aa19cf905eb5f7a418e431060494e49b561c4f88da315bb97bcfd3aa1d50145f38a5f63eeae444b078eb690c545eb216e11f08

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\StUpdate.exe.log

    Filesize

    408B

    MD5

    661cab77d3b907e8057f2e689e995af3

    SHA1

    5d1a0ee9c5ee7a7a90d56d00c10dc0e679bee01c

    SHA256

    8f27f95ad7c09f2e05d7960e78ef8cd935c1262e9657883a75d70dcb877592d2

    SHA512

    2523b316bd79fed0e9b3d73f46959f3dfe270cf950f34bd9d49fe4113a2ae46d0cd00224d848bc40c0d8c55449e2dccc4b4278ba4809c0ca9ede1ac75673fc67

  • C:\Users\Admin\AppData\Roaming\app

    Filesize

    5B

    MD5

    53ce6d1ae8885b5d12e654469f456c83

    SHA1

    9d8b30c523ddef4d24134072b27716bec7d94d6f

    SHA256

    d7ebf92ad6e3bc44fbc3cfbb234ef4afafd7ea339f712229641a2849b6f87ce2

    SHA512

    c15df9281e9ccbb8d30e24e751b77a030e734f8cda4bd9482d3ca02f6b23e463a8e90ddd78a582ca059e57b8d0492c22583d792bc7368094ffc06e12cd145d9d

  • memory/2612-31-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-34-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/3636-0-0x0000000074642000-0x0000000074643000-memory.dmp

    Filesize

    4KB

  • memory/3636-1-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/3636-2-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/3636-20-0x0000000074642000-0x0000000074643000-memory.dmp

    Filesize

    4KB

  • memory/3636-21-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4236-24-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4236-28-0x0000000074640000-0x0000000074BF1000-memory.dmp

    Filesize

    5.7MB