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
    02-01-2025 19:10

General

  • Target

    file.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 49 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.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:848
    • 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:4888
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC73.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:5064
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3720
      • 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:684
        • 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:3112
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp19AD.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3196
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3148
        • 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:4920
          • 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:5076
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQsxHSLtNUjTi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp624F.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2124
          • 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:3116

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\file.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

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    f842b03d916fbe484facee7a89329732

    SHA1

    1c8585f74368ef2cd79296961cbb0989cc67d9d5

    SHA256

    0615a6f804dc78eb4a061a49fa1612141914a3f8248154c403ec38d8bb7b4de9

    SHA512

    f1f8d438da2736b8bf4bd04cc5653508d6808739b28e4fb1a0f625be5a4b9026dc1bff1b7d5b9392272a83cdf9afed9b5785aa59bb7028fea2f5898be6006572

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ukarux1a.x0c.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp19AD.tmp.bat

    Filesize

    157B

    MD5

    591c8ee57033d9602a228d0a48c1711e

    SHA1

    e4e89080c957c35d8bf7e9859940654273f0578d

    SHA256

    1320cec15335cc2f764fb19dd31a8a3f4fccffee6554697225b617c3abab7570

    SHA512

    be52199638fc124faa32839230f1db0b0a6cdf8f0685c7b0443d41d3bd07fd2fdb4935e72c7e93d878b462d95e0e58a99ab4c34d6336c6425d3c4280b3a92504

  • C:\Users\Admin\AppData\Local\Temp\tmpEC73.tmp

    Filesize

    1KB

    MD5

    e3d092844f3519a71cecf717650e747a

    SHA1

    49a914e6319737f8d3c810385b08d3312c59ba5c

    SHA256

    4102491c1151c0a000e92e7d6eaa9008e62398b0084b658f4a1f57d8e43a90a3

    SHA512

    6cdfcd62e95847e55b93a67494294c546d881571a5aa0a732b41b4405efb05bae3d75c8f1abfdbc1470e933ad0201fbae5464140223654170a52b70520de1e80

  • 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/848-4-0x0000000004D60000-0x0000000004D6A000-memory.dmp

    Filesize

    40KB

  • memory/848-3-0x0000000004D70000-0x0000000004E02000-memory.dmp

    Filesize

    584KB

  • memory/848-8-0x000000007465E000-0x000000007465F000-memory.dmp

    Filesize

    4KB

  • memory/848-9-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/848-10-0x0000000006310000-0x000000000636E000-memory.dmp

    Filesize

    376KB

  • memory/848-37-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/848-0-0x000000007465E000-0x000000007465F000-memory.dmp

    Filesize

    4KB

  • memory/848-1-0x00000000002E0000-0x000000000036C000-memory.dmp

    Filesize

    560KB

  • memory/848-6-0x0000000005000000-0x000000000509C000-memory.dmp

    Filesize

    624KB

  • memory/848-5-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/848-7-0x0000000006200000-0x0000000006218000-memory.dmp

    Filesize

    96KB

  • memory/848-2-0x0000000005280000-0x0000000005824000-memory.dmp

    Filesize

    5.6MB

  • memory/3720-36-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/3720-71-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/3720-29-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3720-66-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-40-0x0000000006300000-0x000000000634C000-memory.dmp

    Filesize

    304KB

  • memory/4888-61-0x00000000078E0000-0x00000000078FA000-memory.dmp

    Filesize

    104KB

  • memory/4888-35-0x0000000005D80000-0x00000000060D4000-memory.dmp

    Filesize

    3.3MB

  • memory/4888-41-0x0000000007210000-0x0000000007242000-memory.dmp

    Filesize

    200KB

  • memory/4888-42-0x0000000074EE0000-0x0000000074F2C000-memory.dmp

    Filesize

    304KB

  • memory/4888-52-0x0000000006830000-0x000000000684E000-memory.dmp

    Filesize

    120KB

  • memory/4888-53-0x0000000007450000-0x00000000074F3000-memory.dmp

    Filesize

    652KB

  • memory/4888-55-0x00000000075A0000-0x00000000075BA000-memory.dmp

    Filesize

    104KB

  • memory/4888-54-0x0000000007BF0000-0x000000000826A000-memory.dmp

    Filesize

    6.5MB

  • memory/4888-56-0x0000000007610000-0x000000000761A000-memory.dmp

    Filesize

    40KB

  • memory/4888-57-0x0000000007820000-0x00000000078B6000-memory.dmp

    Filesize

    600KB

  • memory/4888-58-0x00000000077A0000-0x00000000077B1000-memory.dmp

    Filesize

    68KB

  • memory/4888-59-0x00000000077D0000-0x00000000077DE000-memory.dmp

    Filesize

    56KB

  • memory/4888-60-0x00000000077E0000-0x00000000077F4000-memory.dmp

    Filesize

    80KB

  • memory/4888-62-0x00000000078C0000-0x00000000078C8000-memory.dmp

    Filesize

    32KB

  • memory/4888-39-0x0000000006250000-0x000000000626E000-memory.dmp

    Filesize

    120KB

  • memory/4888-65-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-23-0x0000000005C10000-0x0000000005C76000-memory.dmp

    Filesize

    408KB

  • memory/4888-22-0x0000000005B90000-0x0000000005BF6000-memory.dmp

    Filesize

    408KB

  • memory/4888-21-0x00000000052C0000-0x00000000052E2000-memory.dmp

    Filesize

    136KB

  • memory/4888-20-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-17-0x0000000005470000-0x0000000005A98000-memory.dmp

    Filesize

    6.2MB

  • memory/4888-18-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-15-0x0000000004CB0000-0x0000000004CE6000-memory.dmp

    Filesize

    216KB

  • memory/4888-16-0x0000000074650000-0x0000000074E00000-memory.dmp

    Filesize

    7.7MB

  • memory/5076-79-0x0000000005A70000-0x0000000005DC4000-memory.dmp

    Filesize

    3.3MB

  • memory/5076-94-0x00000000062E0000-0x000000000632C000-memory.dmp

    Filesize

    304KB

  • memory/5076-95-0x0000000074F60000-0x0000000074FAC000-memory.dmp

    Filesize

    304KB

  • memory/5076-105-0x0000000007290000-0x0000000007333000-memory.dmp

    Filesize

    652KB

  • memory/5076-106-0x0000000007760000-0x0000000007771000-memory.dmp

    Filesize

    68KB

  • memory/5076-107-0x00000000077A0000-0x00000000077B4000-memory.dmp

    Filesize

    80KB