Analysis

  • max time kernel
    143s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21-05-2024 14:30

General

  • Target

    cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe

  • Size

    1.3MB

  • MD5

    b6fed6afcf62aeefa78ac29a132b73ea

  • SHA1

    c596ab383a296dee20fb5d03af998d5c8ef6e61c

  • SHA256

    cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b

  • SHA512

    07a7072a1e3bc7cb55d3103e5c7d0e77bc1e3d78ac33d964be7356d9b0eaa165d8cf9d38140e9e74dba7bb77b5f2fb3fd2ed8ec12a3a69813a868b0a326ca2e4

  • SSDEEP

    24576:r9Q0lIVTRJlXeXeWAFlw3x1CQgy/U77VaaG8uosbrDqa1VHWTcSdmWDxbLn/ohm:5Q0lsRLXTCx1JM77YoOrDX1l2xbLn/wm

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe
    "C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2388
    • C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe
      "C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2068
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2068 -s 68
        3⤵
        • Program crash
        PID:2164

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsiDC8.tmp\System.dll

    Filesize

    11KB

    MD5

    b8992e497d57001ddf100f9c397fcef5

    SHA1

    e26ddf101a2ec5027975d2909306457c6f61cfbd

    SHA256

    98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b

    SHA512

    8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c

  • memory/2068-62-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2068-66-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2068-65-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2068-64-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2068-36-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2068-37-0x00000000773C0000-0x0000000077569000-memory.dmp

    Filesize

    1.7MB

  • memory/2068-60-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2388-38-0x0000000003830000-0x0000000005F26000-memory.dmp

    Filesize

    39.0MB

  • memory/2388-63-0x0000000003830000-0x0000000005F26000-memory.dmp

    Filesize

    39.0MB

  • memory/2388-35-0x00000000773C0000-0x0000000077569000-memory.dmp

    Filesize

    1.7MB

  • memory/2388-34-0x00000000773C1000-0x00000000774C2000-memory.dmp

    Filesize

    1.0MB

  • memory/2388-33-0x0000000003830000-0x0000000005F26000-memory.dmp

    Filesize

    39.0MB