Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-10-2024 12:25

General

  • Target

    ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe

  • Size

    258KB

  • MD5

    46bb734c47fd5bd04999e5854a4d3c6e

  • SHA1

    6dc503c57bd9dbd7dde00e969d6f325e6b51febf

  • SHA256

    ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b

  • SHA512

    90b16e51825d7d5311f21d2d6792add4f4bd090c3c39f2671550375f3a86f48ac56ce5b098e70d3f3d3034f929bb69a7a94ac8991c442a09e786fa378b0a3381

  • SSDEEP

    3072:+5anOtzyzmT53JiWYTxPdWnpsKtEhHQcx4sLSs99EIzpvf2iFgC79+tMQbI:+5UOkz4YpAOpusOq9EINeEgC79+ttI

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

154.216.17.207:7707

154.216.17.207:8808

154.216.17.207:1188

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    100

  • install

    true

  • install_file

    file.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 3 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
    "C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2280
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:768
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3036
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6BDD.tmp.bat""
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2744
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2224
        • C:\Users\Admin\AppData\Roaming\file.exe
          "C:\Users\Admin\AppData\Roaming\file.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2912
          • C:\Users\Admin\AppData\Roaming\file.exe
            C:\Users\Admin\AppData\Roaming\file.exe
            5⤵
            • Executes dropped EXE
            PID:404
          • C:\Users\Admin\AppData\Roaming\file.exe
            C:\Users\Admin\AppData\Roaming\file.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:3004
    • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2920

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp6BDD.tmp.bat

    Filesize

    148B

    MD5

    f838620a541ff2c1a0375c8605f8b312

    SHA1

    2615360693ac8682e1bf98da1a4db4fa73aae5e5

    SHA256

    853e9495c92a240c4a1558229e3418af53443a4d7078779af0c46a744878155c

    SHA512

    9fa49aa59209cefb0dc3fe6c3cbf3fd248124dcd0c1c610875b4347b2da16e6ec02ceeb6bb0554c041d4a896356deb2a1477e6a7e710fa87d4a760aa332d18a7

  • \Users\Admin\AppData\Roaming\file.exe

    Filesize

    258KB

    MD5

    46bb734c47fd5bd04999e5854a4d3c6e

    SHA1

    6dc503c57bd9dbd7dde00e969d6f325e6b51febf

    SHA256

    ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b

    SHA512

    90b16e51825d7d5311f21d2d6792add4f4bd090c3c39f2671550375f3a86f48ac56ce5b098e70d3f3d3034f929bb69a7a94ac8991c442a09e786fa378b0a3381

  • memory/2100-18-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-1-0x0000000000F00000-0x0000000000F4A000-memory.dmp

    Filesize

    296KB

  • memory/2100-2-0x00000000001F0000-0x00000000001F6000-memory.dmp

    Filesize

    24KB

  • memory/2100-3-0x0000000000490000-0x00000000004D0000-memory.dmp

    Filesize

    256KB

  • memory/2100-4-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-5-0x0000000000220000-0x0000000000226000-memory.dmp

    Filesize

    24KB

  • memory/2100-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp

    Filesize

    4KB

  • memory/2280-17-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2280-8-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2280-20-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2280-16-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2280-22-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2280-6-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2280-33-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2912-38-0x00000000000D0000-0x000000000011A000-memory.dmp

    Filesize

    296KB

  • memory/2920-21-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2920-24-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2920-23-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/2920-19-0x0000000074E90000-0x000000007557E000-memory.dmp

    Filesize

    6.9MB

  • memory/3004-44-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/3004-43-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB