Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/06/2026, 21:30

General

  • Target
    a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe
  • Size 384KB
  • Sample260601-1ctptafw91
  • SHA256 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Unexpected DNS network traffic destination 4 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in System32 directory 13 IoCs
  • UPX packed file 11 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • 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 data under HKEY_USERS 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe
    "C:\Users\Admin\AppData\Local\Temp\a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe"
    1⤵
    • Unexpected DNS network traffic destination
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3488
  • C:\Windows\Syswow64\fc76315f
    C:\Windows\Syswow64\fc76315f
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5092

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        fc76315f

        • Path C:\Windows\SysWOW64\fc76315f
        • Size 384KB
        • SHA256 a66776107e8235899e0eb76e0345778dc584d3c5b0df153e2ae5eb4912ea57b4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3488-0-0x00000000005B0000-0x0000000000639000-memory.dmp

        memory/3488-10-0x00000000005B0000-0x0000000000639000-memory.dmp

        memory/3488-29-0x00000000005B0000-0x0000000000639000-memory.dmp

        memory/3488-37-0x00000000005B0000-0x0000000000639000-memory.dmp

        memory/3488-42-0x00000000005B0000-0x0000000000639000-memory.dmp

        memory/5092-4-0x0000000000130000-0x00000000001B9000-memory.dmp

        memory/5092-12-0x0000000000130000-0x00000000001B9000-memory.dmp

        memory/5092-22-0x0000000000130000-0x00000000001B9000-memory.dmp

        memory/5092-30-0x0000000000130000-0x00000000001B9000-memory.dmp

        memory/5092-38-0x0000000000130000-0x00000000001B9000-memory.dmp