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Analysis

  • max time kernel
    46s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    18/08/2024, 05:16

General

  • Target

    2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea.exe

  • Size

    589KB

  • MD5

    d53fc47751fa8ad0b613c489aa779bda

  • SHA1

    ec14fabb10b9aa9f05344c03802294e114bb2af1

  • SHA256

    2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea

  • SHA512

    b6441aeff786d23401267f23960410614a2686e3d10b6f58c5e9042d7c2f48a4975383f2ec05cfc801faa39a3bbb6bb58161b5ec248252c89ab9bf6ef382e326

  • SSDEEP

    12288:ToQyRAMIgF72A0ybuxRN750J4iWoM7+EgLHpP3V5Ua:uHIgF7Wybexo4iWoM7oHpP3TR

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

REED

C2

bmh-global.myfirewall.org:15153

Mutex

2bL4M7bieVyn

Attributes
  • delay

    10

  • install

    true

  • install_file

    windows manger.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea.exe
    "C:\Users\Admin\AppData\Local\Temp\2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Users\Admin\AppData\Local\Temp\2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea.exe
      "C:\Users\Admin\AppData\Local\Temp\2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows manger" /tr '"C:\Users\Admin\AppData\Local\Temp\windows manger.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "windows manger" /tr '"C:\Users\Admin\AppData\Local\Temp\windows manger.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:896
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8BCB.tmp.bat""
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1052
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:836
        • C:\Users\Admin\AppData\Local\Temp\windows manger.exe
          "C:\Users\Admin\AppData\Local\Temp\windows manger.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2376
          • C:\Users\Admin\AppData\Local\Temp\windows manger.exe
            "C:\Users\Admin\AppData\Local\Temp\windows manger.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabEC54.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\tmp8BCB.tmp.bat

    Filesize

    161B

    MD5

    e83116086b17d855d63a6a5a59f3a98c

    SHA1

    47de172df97750dca519db97eb526517d19c2dd8

    SHA256

    3c04307d3d485b3a261934939e53d995b2766770ebc563c96e4490a11ff0b593

    SHA512

    1e670aceb9847b5c70b74ce75b43b2c9b5e26a409d5178a38dfefcdacbb9f706aa1a00f83800e2ca9339f5e958e47c4ec8f55b15e8a1e1f7f29614a39f331f57

  • \Users\Admin\AppData\Local\Temp\windows manger.exe

    Filesize

    589KB

    MD5

    d53fc47751fa8ad0b613c489aa779bda

    SHA1

    ec14fabb10b9aa9f05344c03802294e114bb2af1

    SHA256

    2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea

    SHA512

    b6441aeff786d23401267f23960410614a2686e3d10b6f58c5e9042d7c2f48a4975383f2ec05cfc801faa39a3bbb6bb58161b5ec248252c89ab9bf6ef382e326

  • memory/1956-22-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/1956-3-0x0000000000480000-0x000000000049E000-memory.dmp

    Filesize

    120KB

  • memory/1956-5-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/1956-6-0x00000000002D0000-0x00000000002E6000-memory.dmp

    Filesize

    88KB

  • memory/1956-7-0x0000000000CC0000-0x0000000000D14000-memory.dmp

    Filesize

    336KB

  • memory/1956-1-0x0000000000D60000-0x0000000000DF8000-memory.dmp

    Filesize

    608KB

  • memory/1956-4-0x000000007456E000-0x000000007456F000-memory.dmp

    Filesize

    4KB

  • memory/1956-0-0x000000007456E000-0x000000007456F000-memory.dmp

    Filesize

    4KB

  • memory/1956-2-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2376-39-0x0000000000060000-0x00000000000F8000-memory.dmp

    Filesize

    608KB

  • memory/2720-54-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2720-52-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2720-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2728-20-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-8-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-24-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-23-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-10-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-34-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-11-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-21-0x0000000074560000-0x0000000074C4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-12-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-18-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2728-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2728-16-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB