Analysis

  • max time kernel
    94s
  • 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
    09-12-2024 16:33

General

  • Target

    41VMO_file.exe

  • Size

    3.6MB

  • MD5

    d3f515d42cf7e62738c596dc4ba9fdb9

  • SHA1

    f63216b18ab4265d9c0b3243ba491fcb74b1bac6

  • SHA256

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

  • SHA512

    81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

  • SSDEEP

    49152:TwWtZnTwCk7UHla796h+16eUMTycWaX/Ngvv1VlHIPIV/CdQvJuJ44wPcbErkcz3:TwwvYXUMmczWvnlo0KSj5L1Ln9

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
  • VenomRAT 1 IoCs

    Detects VenomRAT.

  • Venomrat 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
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
    "C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2532
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDCE3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3168
    • C:\Users\Admin\AppData\Local\Temp\41VMO_file.exe
      "C:\Users\Admin\AppData\Local\Temp\41VMO_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:888
      • 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:4664
        • 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:4032
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA5B.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3832
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4536
        • 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 use of WriteProcessMemory
          PID:224
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3096
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5639.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2872
          • 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:3860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\41VMO_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

    a40ecfb4cd2e9377fc9ed46a1a09b0a9

    SHA1

    6d6c18507915afef85265de4ece0592d75e60403

    SHA256

    f1f603ab55eeee08e8f3d2a3333aec639604a984c9a9304c40f77834d03036b2

    SHA512

    fcfdae0ed6dd8f2e3af099b6f3f75324b174d5dd7070f4dd467c30e491f2f9b76106715d6a8bb41d85f0e9b0d44c537bc2095a39adb9c20861a0caf91f7f8a19

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f5dbhfdk.r3l.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA5B.tmp.bat

    Filesize

    156B

    MD5

    4644176dfcafac00f3ce565e9bad75fb

    SHA1

    bf10697d0853245698fd269f418a11b1edf209d5

    SHA256

    a8fb5b1c82d6591862fefd7e172244046c17a4ef7026617a308b7214b35a1cfb

    SHA512

    2692b48a45d46999cf90c824bb3a219993793bc294860c9d6db09778a512d1bc2d72f4f5cdd7c27b5e3c4a92749412838a121456cc4cbabba86b4ea0ec00038e

  • C:\Users\Admin\AppData\Local\Temp\tmpDCE3.tmp

    Filesize

    1KB

    MD5

    9fc168ab6fe6ed238e7806849fc54787

    SHA1

    7a216c6577f90d6c872428bdd4978318233e254b

    SHA256

    d6409c0dd6c75cee225f5b9f36847d30725ad129754df38fef74df74375985f6

    SHA512

    a0ba5ce300f00b98257b18fcf07bfb200b1436489f2b3f65fd050dd0ba7aee3985fd95b5738593727015402e0431d7c7e32ee8b9b866d0e1d125e653e858035a

  • 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

    3.6MB

    MD5

    d3f515d42cf7e62738c596dc4ba9fdb9

    SHA1

    f63216b18ab4265d9c0b3243ba491fcb74b1bac6

    SHA256

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

    SHA512

    81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

  • memory/888-26-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/888-71-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/888-40-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/888-66-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/888-20-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/1460-2-0x0000000005F90000-0x0000000006534000-memory.dmp

    Filesize

    5.6MB

  • memory/1460-10-0x000000000AE60000-0x000000000AEFC000-memory.dmp

    Filesize

    624KB

  • memory/1460-27-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-9-0x00000000086F0000-0x000000000874C000-memory.dmp

    Filesize

    368KB

  • memory/1460-8-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-7-0x000000007443E000-0x000000007443F000-memory.dmp

    Filesize

    4KB

  • memory/1460-6-0x0000000005BF0000-0x0000000005C0E000-memory.dmp

    Filesize

    120KB

  • memory/1460-5-0x00000000059B0000-0x00000000059BA000-memory.dmp

    Filesize

    40KB

  • memory/1460-4-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-3-0x00000000059E0000-0x0000000005A72000-memory.dmp

    Filesize

    584KB

  • memory/1460-1-0x0000000000ED0000-0x0000000000FB8000-memory.dmp

    Filesize

    928KB

  • memory/1460-0-0x000000007443E000-0x000000007443F000-memory.dmp

    Filesize

    4KB

  • memory/2532-39-0x0000000006410000-0x000000000645C000-memory.dmp

    Filesize

    304KB

  • memory/2532-65-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2532-41-0x0000000007320000-0x0000000007352000-memory.dmp

    Filesize

    200KB

  • memory/2532-42-0x00000000708D0000-0x000000007091C000-memory.dmp

    Filesize

    304KB

  • memory/2532-52-0x0000000006910000-0x000000000692E000-memory.dmp

    Filesize

    120KB

  • memory/2532-53-0x0000000007560000-0x0000000007603000-memory.dmp

    Filesize

    652KB

  • memory/2532-54-0x0000000007CC0000-0x000000000833A000-memory.dmp

    Filesize

    6.5MB

  • memory/2532-55-0x0000000007670000-0x000000000768A000-memory.dmp

    Filesize

    104KB

  • memory/2532-56-0x00000000076E0000-0x00000000076EA000-memory.dmp

    Filesize

    40KB

  • memory/2532-57-0x00000000078F0000-0x0000000007986000-memory.dmp

    Filesize

    600KB

  • memory/2532-58-0x0000000007870000-0x0000000007881000-memory.dmp

    Filesize

    68KB

  • memory/2532-59-0x00000000078A0000-0x00000000078AE000-memory.dmp

    Filesize

    56KB

  • memory/2532-60-0x00000000078B0000-0x00000000078C4000-memory.dmp

    Filesize

    80KB

  • memory/2532-61-0x00000000079B0000-0x00000000079CA000-memory.dmp

    Filesize

    104KB

  • memory/2532-62-0x0000000007990000-0x0000000007998000-memory.dmp

    Filesize

    32KB

  • memory/2532-38-0x0000000006350000-0x000000000636E000-memory.dmp

    Filesize

    120KB

  • memory/2532-23-0x0000000005380000-0x00000000053A2000-memory.dmp

    Filesize

    136KB

  • memory/2532-28-0x0000000005D70000-0x00000000060C4000-memory.dmp

    Filesize

    3.3MB

  • memory/2532-24-0x0000000005BA0000-0x0000000005C06000-memory.dmp

    Filesize

    408KB

  • memory/2532-25-0x0000000005D00000-0x0000000005D66000-memory.dmp

    Filesize

    408KB

  • memory/2532-19-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2532-18-0x0000000005500000-0x0000000005B28000-memory.dmp

    Filesize

    6.2MB

  • memory/2532-17-0x0000000074430000-0x0000000074BE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2532-15-0x0000000004D80000-0x0000000004DB6000-memory.dmp

    Filesize

    216KB

  • memory/3096-88-0x0000000005CF0000-0x0000000006044000-memory.dmp

    Filesize

    3.3MB

  • memory/3096-94-0x00000000068E0000-0x000000000692C000-memory.dmp

    Filesize

    304KB

  • memory/3096-95-0x0000000070270000-0x00000000702BC000-memory.dmp

    Filesize

    304KB

  • memory/3096-105-0x0000000007600000-0x00000000076A3000-memory.dmp

    Filesize

    652KB

  • memory/3096-106-0x00000000078B0000-0x00000000078C1000-memory.dmp

    Filesize

    68KB

  • memory/3096-107-0x0000000007900000-0x0000000007914000-memory.dmp

    Filesize

    80KB