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Analysis

  • max time kernel
    150s
  • max time network
    145s
  • 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, 06:21

General

  • Target

    856.exe

  • Size

    93KB

  • MD5

    68edafe0a1705d5c7dd1cb14fa1ca8ce

  • SHA1

    7e9d854c90acd7452645506874c4e6f10bfdda31

  • SHA256

    68f0121f2062aede8ae8bd52bba3c4c6c8aa19bdf32958b4e305cf716a92cc3d

  • SHA512

    89a965f783ea7f54b55a542168ff759e851eae77cdfa9e23ba76145614b798f0815f2feb8670c16f26943e83bba2ade0649d6dc83af8d87c51c42f96d015573d

  • SSDEEP

    768:JY37KBD9O/pBcxYsbae6GIXb9pDX2b9zPL0OXLeuXxrjEtCdnl2pi1Rz4Rk3WsG3:kKzOx6baIa9RIj00ljEwzGi1dDSD7gS

Malware Config

Signatures

  • Disables Task Manager via registry modification
  • Modifies Windows Firewall 2 TTPs 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 18 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • 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 38 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\856.exe
    "C:\Users\Admin\AppData\Local\Temp\856.exe"
    1⤵
    • Checks computer location settings
    • Drops autorun.inf file
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3660
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\856.exe" "856.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4392
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\856.exe"
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2712
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\856.exe" "856.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:3828
    • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3520
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" "svchost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:860
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:5068
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" "svchost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:4932
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2240
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3680
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • 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\Local\Temp\melt.txt

    Filesize

    41B

    MD5

    0580ef82887ddb617447665767b975f5

    SHA1

    59c488ecd971acd211cf0d52c4145fd40400084e

    SHA256

    c2bf58aabc76d5eba56eb181eab151fe31848c74a223efaf2e340b3f95899b64

    SHA512

    dbb81a1059d02fd7907b36d28cef121ec65c02f824347ec2190be728d260ff71faf9d18dd12d09456d17d8374f81f212c92dbc97001cb53be7c2094f2fb85eee

  • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe

    Filesize

    93KB

    MD5

    68edafe0a1705d5c7dd1cb14fa1ca8ce

    SHA1

    7e9d854c90acd7452645506874c4e6f10bfdda31

    SHA256

    68f0121f2062aede8ae8bd52bba3c4c6c8aa19bdf32958b4e305cf716a92cc3d

    SHA512

    89a965f783ea7f54b55a542168ff759e851eae77cdfa9e23ba76145614b798f0815f2feb8670c16f26943e83bba2ade0649d6dc83af8d87c51c42f96d015573d

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

    Filesize

    5B

    MD5

    02b81b0cbe1faaa1fa62d5fc876ab443

    SHA1

    d473cfe21fb1f188689415b0bdd239688f8fddd9

    SHA256

    e7e9e2c247bc872bacce77661c78f001a17d70ee3130a9016a5818da9da00cdb

    SHA512

    592ab5b200d4c560951cb70288dc1b7a562f0cbfaee01ce03076b6934d537b88575c2e1e0fedcc05db95e6c224ca739923e7d74f9165e683f3fbad7bbf641784

  • memory/3660-0-0x0000000074702000-0x0000000074703000-memory.dmp

    Filesize

    4KB

  • memory/3660-1-0x0000000074700000-0x0000000074CB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3660-2-0x0000000074700000-0x0000000074CB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3660-22-0x0000000074700000-0x0000000074CB1000-memory.dmp

    Filesize

    5.7MB