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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2024, 17:45

General

  • Target

    de96f95692e27176b74125a40300ba08.exe

  • Size

    1.9MB

  • MD5

    de96f95692e27176b74125a40300ba08

  • SHA1

    472c7dfb79b00e95b68b3ba23c7fb5c14c740053

  • SHA256

    172705adb5ebbb023174bafa12a8c572604258aaf4a3959ec6759c7e3333b7ec

  • SHA512

    9062560007de212f285c1fee05df3b6cd021fcc4367d29b1baf9b0a1158aca484601a57b84e7c4b9c0937336f7a3e6e69fd990f516abd288666edf6aca16e1cc

  • SSDEEP

    24576:sYYiCmMxAtOsBgo0q4wMcCcsp/iKgM4MRM/mXVK67k3GCo27nsISxZvBn2spMBuu:sVWsoHMcCbppx44lK13NAI6736F6Z

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

podzeye.duckdns.org:4422

podzeye.duckdns.org:4442

podzeye.duckdns.org:4433

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe
    "C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe
      "C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4828
      • C:\Users\Admin\AppData\Local\Temp\System.exe
        "C:\Users\Admin\AppData\Local\Temp\System.exe" 0
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2956
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ToahHiZtj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC7E.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:408
        • C:\Users\Admin\AppData\Local\Temp\System.exe
          "C:\Users\Admin\AppData\Local\Temp\System.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:4856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\System.exe.log

    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

  • C:\Users\Admin\AppData\Local\Temp\System.exe

    Filesize

    1.1MB

    MD5

    6de6f3b1c646ed699f7e31c0631d0032

    SHA1

    e658e0ddf1d4d5cfbf3a73635ac96682bcfac6cb

    SHA256

    eb054bd6d1a8270815b7aba891b45fad52593e1eb99dfb5052dadb61587e9c45

    SHA512

    21eaa83a95ed1a4902ad06fe450a2fc745c5ebcb7816a9dd4690112910c83130b54a3632aa88ac498055ea33275e3df7373658053c0fbf5290ea3493273c566d

  • C:\Users\Admin\AppData\Local\Temp\tmpEC7E.tmp

    Filesize

    1KB

    MD5

    0e0f8cf5cfaeb08a9fe4aaacb01be066

    SHA1

    f005218824f0de9247186df7b6840a04b1d59c61

    SHA256

    55437b302d0a1f34d1c3423558ba563763a79f8bd7f37d1f9e074b48a95a3f13

    SHA512

    58c72919767211a6b3695ccd7db02cfb10774f61dd23dbbf8063d3d07bef0658cecf51159c756461c8d8551a5a7d316378327c7fec2438b2700e504e6476601d

  • memory/2956-38-0x0000000005A60000-0x0000000005A72000-memory.dmp

    Filesize

    72KB

  • memory/2956-33-0x0000000000E60000-0x0000000000F74000-memory.dmp

    Filesize

    1.1MB

  • memory/2956-49-0x0000000073FE0000-0x0000000074790000-memory.dmp

    Filesize

    7.7MB

  • memory/2956-32-0x0000000073FE0000-0x0000000074790000-memory.dmp

    Filesize

    7.7MB

  • memory/2956-36-0x0000000005A70000-0x0000000005A80000-memory.dmp

    Filesize

    64KB

  • memory/2956-35-0x0000000073FE0000-0x0000000074790000-memory.dmp

    Filesize

    7.7MB

  • memory/2956-34-0x0000000005A70000-0x0000000005A80000-memory.dmp

    Filesize

    64KB

  • memory/2956-37-0x0000000006F20000-0x0000000006F7A000-memory.dmp

    Filesize

    360KB

  • memory/4508-10-0x0000000005230000-0x0000000005240000-memory.dmp

    Filesize

    64KB

  • memory/4508-4-0x0000000005000000-0x0000000005092000-memory.dmp

    Filesize

    584KB

  • memory/4508-5-0x0000000005230000-0x0000000005240000-memory.dmp

    Filesize

    64KB

  • memory/4508-1-0x00000000752B0000-0x0000000075A60000-memory.dmp

    Filesize

    7.7MB

  • memory/4508-18-0x00000000752B0000-0x0000000075A60000-memory.dmp

    Filesize

    7.7MB

  • memory/4508-3-0x0000000005510000-0x0000000005AB4000-memory.dmp

    Filesize

    5.6MB

  • memory/4508-7-0x00000000052A0000-0x00000000052F6000-memory.dmp

    Filesize

    344KB

  • memory/4508-8-0x0000000002770000-0x0000000002782000-memory.dmp

    Filesize

    72KB

  • memory/4508-2-0x0000000004EB0000-0x0000000004F4C000-memory.dmp

    Filesize

    624KB

  • memory/4508-6-0x0000000004FA0000-0x0000000004FAA000-memory.dmp

    Filesize

    40KB

  • memory/4508-12-0x0000000006E00000-0x0000000006F1A000-memory.dmp

    Filesize

    1.1MB

  • memory/4508-9-0x00000000752B0000-0x0000000075A60000-memory.dmp

    Filesize

    7.7MB

  • memory/4508-11-0x0000000006C80000-0x0000000006DB2000-memory.dmp

    Filesize

    1.2MB

  • memory/4508-0-0x0000000000320000-0x0000000000510000-memory.dmp

    Filesize

    1.9MB

  • memory/4828-31-0x0000000000400000-0x0000000000513000-memory.dmp

    Filesize

    1.1MB

  • memory/4828-16-0x0000000000400000-0x0000000000513000-memory.dmp

    Filesize

    1.1MB

  • memory/4828-13-0x0000000000400000-0x0000000000513000-memory.dmp

    Filesize

    1.1MB

  • memory/4856-44-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/4856-48-0x0000000073FE0000-0x0000000074790000-memory.dmp

    Filesize

    7.7MB

  • memory/4856-50-0x0000000002A10000-0x0000000002A20000-memory.dmp

    Filesize

    64KB

  • memory/4856-51-0x0000000073FE0000-0x0000000074790000-memory.dmp

    Filesize

    7.7MB

  • memory/4856-52-0x0000000002A10000-0x0000000002A20000-memory.dmp

    Filesize

    64KB