Analysis

  • max time kernel
    118s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    20-08-2024 13:31

General

  • Target

    244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f.exe

  • Size

    608KB

  • MD5

    690c1b65a6267d6d0b201ba46089aabc

  • SHA1

    9eb6859bae82bcf8b9df7cf4fc061cd9155fdc39

  • SHA256

    244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f

  • SHA512

    cc540851386a3b98227822b2c952a57caf15db4563f9c246b8be5bca0989aaff70e64191d010738db86598d76dd8ad4e59a50965224db9f623edb64f2f8b3e2a

  • SSDEEP

    12288:foQyRAt8qF72zz4a5wbpkTPVNI8mQdd1lzRB6nC8OziDjmRkR:qm8qF7Gzp5waTPVNuIdnYC8OyCM

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

2 MONEY

C2

twart.myfirewall.org:14143

Mutex

udn3BZ1Fqt3jtiZx

Attributes
  • delay

    30

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 10 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Start PowerShell.

  • 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 11 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 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f.exe
    "C:\Users\Admin\AppData\Local\Temp\244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Users\Admin\AppData\Local\Temp\244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f.exe
      "C:\Users\Admin\AppData\Local\Temp\244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2276
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2288
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2912
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp48C3.tmp.bat""
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:772
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2664
        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1472
          • C:\Users\Admin\AppData\Local\Temp\svchost.exe
            "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2876
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"' & exit
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2452
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"'
                7⤵
                • Loads dropped DLL
                • Command and Scripting Interpreter: PowerShell
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1736
                • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                  "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                  8⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:2172
                  • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                    "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2112
                  • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                    "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2412
                  • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                    "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2236
                  • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                    "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2184
                  • C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe
                    "C:\Users\Admin\AppData\Local\Temp\vpkdqq.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabF7AA.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar1644.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\Temp\tmp48C3.tmp.bat

    Filesize

    154B

    MD5

    724fb9a15bd9c4947ca32bd90f2d71dd

    SHA1

    26bfe5b6b0eaeaef8bb09ec16dd24f5660435a4f

    SHA256

    3bdbeabd3f8ea2f6911977db24358b6e48f549b625fc65c18e6eb3215d28e321

    SHA512

    672b8738bf182a13e2f67981e0d98e9bd232a5d7febcf811c04311626385086080209b88bdc308cab4a6a1f396b7fe6a01fd636b488bb0a737927d93d216f9c2

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

    Filesize

    787KB

    MD5

    65024845cc98cd27fe6fd1cde0b90e13

    SHA1

    548a9f43848255a76b96d9617fce46216ce7cac2

    SHA256

    3ea082cbf550dcc1c297441b6859a65c1a47587a9eec61121d6799984e679c2f

    SHA512

    a41f91fdf28d3a46663a5ee29c2cff030876fbe458bb6f84c012fdc02641f5c21208beba17ff6e541ea48592ea53a7f4e62fe0f4de13442bf20c2ad1b4fa20a0

  • \Users\Admin\AppData\Local\Temp\svchost.exe

    Filesize

    608KB

    MD5

    690c1b65a6267d6d0b201ba46089aabc

    SHA1

    9eb6859bae82bcf8b9df7cf4fc061cd9155fdc39

    SHA256

    244f3a2fad1afa232909355901f33cca18ea95444c5d142c7aa308170db5294f

    SHA512

    cc540851386a3b98227822b2c952a57caf15db4563f9c246b8be5bca0989aaff70e64191d010738db86598d76dd8ad4e59a50965224db9f623edb64f2f8b3e2a

  • memory/1472-41-0x00000000002E0000-0x000000000037A000-memory.dmp

    Filesize

    616KB

  • memory/1484-23-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/1484-7-0x0000000004730000-0x0000000004784000-memory.dmp

    Filesize

    336KB

  • memory/1484-0-0x000000007428E000-0x000000007428F000-memory.dmp

    Filesize

    4KB

  • memory/1484-6-0x00000000007D0000-0x00000000007E6000-memory.dmp

    Filesize

    88KB

  • memory/1484-5-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/1484-4-0x000000007428E000-0x000000007428F000-memory.dmp

    Filesize

    4KB

  • memory/1484-3-0x00000000009E0000-0x00000000009FE000-memory.dmp

    Filesize

    120KB

  • memory/1484-2-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/1484-1-0x0000000000C60000-0x0000000000CFA000-memory.dmp

    Filesize

    616KB

  • memory/2172-100-0x0000000005C00000-0x0000000005C82000-memory.dmp

    Filesize

    520KB

  • memory/2172-99-0x0000000000310000-0x0000000000326000-memory.dmp

    Filesize

    88KB

  • memory/2172-98-0x0000000000360000-0x000000000042A000-memory.dmp

    Filesize

    808KB

  • memory/2276-10-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-19-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-25-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2276-36-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2276-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2276-17-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-8-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-13-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-12-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2276-26-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2276-24-0x0000000074280000-0x000000007496E000-memory.dmp

    Filesize

    6.9MB

  • memory/2276-22-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2876-72-0x0000000005190000-0x00000000051F2000-memory.dmp

    Filesize

    392KB

  • memory/2876-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2876-54-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2876-55-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2876-111-0x0000000006AF0000-0x0000000006B8C000-memory.dmp

    Filesize

    624KB

  • memory/2876-130-0x0000000002070000-0x0000000002078000-memory.dmp

    Filesize

    32KB

  • memory/2876-131-0x0000000005770000-0x00000000057B0000-memory.dmp

    Filesize

    256KB

  • memory/2876-132-0x0000000002080000-0x000000000208A000-memory.dmp

    Filesize

    40KB