Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/04/2026, 16:47

General

  • Target
    2026-04-20_a60e9ee9145dc3b36de34621482bf708_amadey_coinminer_elex_smoke-loader_stop.exe
  • Size 640KB
  • Sample260420-vapeescw21
  • SHA256 337f2397e5ed713f269082ef1b12b0312830cb313074c980d70c8508e6236794
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Custom signature
    UPX dump on OEP (original entry point) 6 IoCs
  • 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 17 IoCs
  • UPX packed file 6 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
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-20_a60e9ee9145dc3b36de34621482bf708_amadey_coinminer_elex_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-20_a60e9ee9145dc3b36de34621482bf708_amadey_coinminer_elex_smoke-loader_stop.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:748
  • C:\Windows\Syswow64\99a32c76
    C:\Windows\Syswow64\99a32c76
    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
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3936

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        99a32c76

        • Path C:\Windows\SysWOW64\99a32c76
        • Size 640KB
        • SHA256 3746c8a757d92746cf760ae333911f2e29731a1add7daf9b3174696fbb020a37
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/748-0-0x0000000000590000-0x000000000061C000-memory.dmp

        memory/748-10-0x0000000000590000-0x000000000061C000-memory.dmp

        memory/748-27-0x0000000003090000-0x000000000331B000-memory.dmp

        memory/748-47-0x0000000003090000-0x000000000331B000-memory.dmp

        memory/3936-3-0x0000000000960000-0x00000000009EC000-memory.dmp

        memory/3936-12-0x0000000000960000-0x00000000009EC000-memory.dmp

        memory/3936-11-0x0000000001490000-0x000000000171B000-memory.dmp

        memory/3936-41-0x0000000000960000-0x00000000009EC000-memory.dmp