Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 03:29

General

  • Target

    4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe

  • Size

    551KB

  • MD5

    acb979b81c2acf8de8925ac44a607e48

  • SHA1

    9be1e0bb48c9343c22f292089e4931f0ce739421

  • SHA256

    4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7

  • SHA512

    41b4e517540a5b2f225f967424c2d009cc85bb6d77398507770b1b474a4ebfd2361f695f380f6c9291cf627e693ba057b4a05c55b52f5c7e5780d37af4c15a01

  • SSDEEP

    12288:lxX3xXFdZd9HdkGIwHNLfh2AnX9TML8wHbC708POrXNiH19m9IWIu/rqkR:fzrd9HdkGIONLh2AnXkv8PeUL5WIyp

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

185.208.158.187:4449

Mutex

tnybaidkzovl

Attributes
  • delay

    10

  • install

    true

  • install_file

    NotepadUpdate.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 12 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 45 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe
    "C:\Users\Admin\AppData\Local\Temp\4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efQsxHSLtNUjTi.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1232
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC16B.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4936
    • C:\Users\Admin\AppData\Local\Temp\4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe
      "C:\Users\Admin\AppData\Local\Temp\4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3148
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2084
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1344
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEE19.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3312
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:900
        • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
          "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4456
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efQsxHSLtNUjTi.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4064
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A74.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:632
          • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
            "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

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

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    2b79b2a4108ec422dbce4f858c77581f

    SHA1

    f72bf4d196e8d3b91427264952b18ad59006c913

    SHA256

    70e64f065afda83ec6cc77e740c9df60ccd6cab08d783a8630ae1c5706742a3c

    SHA512

    0898464de8b4c163ed85f641d36a7977c9fc2330fe4dfed56125ed8dbca09b7beb96cf723c4e144957203408ee2d33f2e758b155a8b6401e54bca53ca78578d3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dj2v2qka.1ny.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC16B.tmp

    Filesize

    1KB

    MD5

    e3d092844f3519a71cecf717650e747a

    SHA1

    49a914e6319737f8d3c810385b08d3312c59ba5c

    SHA256

    4102491c1151c0a000e92e7d6eaa9008e62398b0084b658f4a1f57d8e43a90a3

    SHA512

    6cdfcd62e95847e55b93a67494294c546d881571a5aa0a732b41b4405efb05bae3d75c8f1abfdbc1470e933ad0201fbae5464140223654170a52b70520de1e80

  • C:\Users\Admin\AppData\Local\Temp\tmpEE19.tmp.bat

    Filesize

    157B

    MD5

    cd6ef072482e91f8b07aa2e8524641cd

    SHA1

    d93f032d3f09f291d95cd079a8bb2871e5a925fb

    SHA256

    55f2d4c3fd7993226605909c4d8f397f06ee3d8d03d04932d7158956b2ae2afb

    SHA512

    6c1c29db47e106046ea6001a1f332881ba204f102a90cfe55967642bc4978895b0b166d431c6e8c55d3b4537955ca00274671d8af21060dc4d65889f415c459c

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe

    Filesize

    551KB

    MD5

    acb979b81c2acf8de8925ac44a607e48

    SHA1

    9be1e0bb48c9343c22f292089e4931f0ce739421

    SHA256

    4fe449d036c64073e840b18ba90368b895159740ee8596476e42125477a70ed7

    SHA512

    41b4e517540a5b2f225f967424c2d009cc85bb6d77398507770b1b474a4ebfd2361f695f380f6c9291cf627e693ba057b4a05c55b52f5c7e5780d37af4c15a01

  • memory/1232-40-0x0000000006010000-0x000000000605C000-memory.dmp

    Filesize

    304KB

  • memory/1232-54-0x00000000076E0000-0x0000000007D5A000-memory.dmp

    Filesize

    6.5MB

  • memory/1232-15-0x0000000002450000-0x0000000002486000-memory.dmp

    Filesize

    216KB

  • memory/1232-17-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/1232-18-0x00000000050A0000-0x00000000056C8000-memory.dmp

    Filesize

    6.2MB

  • memory/1232-20-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/1232-65-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/1232-62-0x00000000073C0000-0x00000000073C8000-memory.dmp

    Filesize

    32KB

  • memory/1232-61-0x00000000073E0000-0x00000000073FA000-memory.dmp

    Filesize

    104KB

  • memory/1232-60-0x00000000072E0000-0x00000000072F4000-memory.dmp

    Filesize

    80KB

  • memory/1232-59-0x00000000072D0000-0x00000000072DE000-memory.dmp

    Filesize

    56KB

  • memory/1232-58-0x00000000072A0000-0x00000000072B1000-memory.dmp

    Filesize

    68KB

  • memory/1232-28-0x00000000057B0000-0x0000000005816000-memory.dmp

    Filesize

    408KB

  • memory/1232-26-0x0000000005010000-0x0000000005032000-memory.dmp

    Filesize

    136KB

  • memory/1232-27-0x0000000005740000-0x00000000057A6000-memory.dmp

    Filesize

    408KB

  • memory/1232-34-0x0000000005820000-0x0000000005B74000-memory.dmp

    Filesize

    3.3MB

  • memory/1232-57-0x0000000007320000-0x00000000073B6000-memory.dmp

    Filesize

    600KB

  • memory/1232-39-0x0000000005D80000-0x0000000005D9E000-memory.dmp

    Filesize

    120KB

  • memory/1232-56-0x0000000007110000-0x000000000711A000-memory.dmp

    Filesize

    40KB

  • memory/1232-41-0x0000000006350000-0x0000000006382000-memory.dmp

    Filesize

    200KB

  • memory/1232-42-0x0000000070210000-0x000000007025C000-memory.dmp

    Filesize

    304KB

  • memory/1232-53-0x0000000006F50000-0x0000000006FF3000-memory.dmp

    Filesize

    652KB

  • memory/1232-52-0x0000000006330000-0x000000000634E000-memory.dmp

    Filesize

    120KB

  • memory/1232-55-0x00000000070A0000-0x00000000070BA000-memory.dmp

    Filesize

    104KB

  • memory/2644-6-0x0000000004EF0000-0x0000000004F8C000-memory.dmp

    Filesize

    624KB

  • memory/2644-8-0x00000000743CE000-0x00000000743CF000-memory.dmp

    Filesize

    4KB

  • memory/2644-1-0x00000000002D0000-0x000000000035C000-memory.dmp

    Filesize

    560KB

  • memory/2644-4-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/2644-23-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/2644-7-0x0000000005220000-0x0000000005238000-memory.dmp

    Filesize

    96KB

  • memory/2644-5-0x0000000004DA0000-0x0000000004DAA000-memory.dmp

    Filesize

    40KB

  • memory/2644-10-0x00000000061C0000-0x000000000621E000-memory.dmp

    Filesize

    376KB

  • memory/2644-9-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/2644-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

    Filesize

    4KB

  • memory/2644-3-0x0000000004BE0000-0x0000000004C72000-memory.dmp

    Filesize

    584KB

  • memory/2644-2-0x0000000005250000-0x00000000057F4000-memory.dmp

    Filesize

    5.6MB

  • memory/3148-66-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/3148-19-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3148-22-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/3148-25-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/3148-71-0x00000000743C0000-0x0000000074B70000-memory.dmp

    Filesize

    7.7MB

  • memory/4064-108-0x0000000007010000-0x0000000007024000-memory.dmp

    Filesize

    80KB

  • memory/4064-95-0x0000000005BF0000-0x0000000005C3C000-memory.dmp

    Filesize

    304KB

  • memory/4064-96-0x0000000070200000-0x000000007024C000-memory.dmp

    Filesize

    304KB

  • memory/4064-106-0x0000000006D10000-0x0000000006DB3000-memory.dmp

    Filesize

    652KB

  • memory/4064-107-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

    Filesize

    68KB

  • memory/4064-93-0x00000000053B0000-0x0000000005704000-memory.dmp

    Filesize

    3.3MB