Analysis

  • max time kernel
    94s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-12-2024 02:17

General

  • Target

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.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
  • 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\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe
    "C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • 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\yRnixT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1328
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp24D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4916
    • C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe
      "C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:732
      • 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:4296
        • 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:3816
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2F68.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1212
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2904
        • 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:2324
          • 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:5068
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B74.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3952
          • 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:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.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

    9f2941638b88b540977a92cef83b4f44

    SHA1

    aefe263d09460d41182da01a59641390c7e542e0

    SHA256

    dede8f0184192b7807e3369235496ff5d2de94a8b1bcaf4d68c48eecae888f73

    SHA512

    1b8caa0b419823127ae89cae097abe665592d857487ee8a04c056b2d7a489955df6c595fbe9dde7c96705829bb642926aa9a016bf8a1edbd0cd0d3481f028361

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l5j02knq.ljw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp24D.tmp

    Filesize

    1KB

    MD5

    bfb593fd551a383bf63e895c2e6c2b48

    SHA1

    eb02bda5d1ee2aee206d9afd711005b11762d543

    SHA256

    5d7829643c2c5efed1046682058b5cad404c6633cfb917d22487343a3c6f03ff

    SHA512

    281111d947b89c8a6135eafb946d7784f69c0b62bc89b7c3d6360d68e3beb502d784081a2b823de67a79d3b224796f333cf307e99c57f2601c7fdf49767f47aa

  • C:\Users\Admin\AppData\Local\Temp\tmp2F68.tmp.bat

    Filesize

    157B

    MD5

    a7c460f88af368b9e8dd7d943d48fcd2

    SHA1

    b93ab5c2ddeffa0d9b9a2462fb7ad0777f49de49

    SHA256

    29e0766884d5c764b5a80fd8f996f31aca27e1f275a745ac3cab85ab7273d360

    SHA512

    6b2cab7712f091676ef85ea5e3339be851bb80d3ff0744df316cd29121814866639f814befd247e5d51d42309b3888f3893f18cddabd5497506d9e9d8bb630ad

  • 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/732-40-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/732-68-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/732-72-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/732-24-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/732-20-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/848-10-0x000000000A9E0000-0x000000000AA7C000-memory.dmp

    Filesize

    624KB

  • memory/848-3-0x0000000005160000-0x00000000051F2000-memory.dmp

    Filesize

    584KB

  • memory/848-4-0x0000000005230000-0x000000000523A000-memory.dmp

    Filesize

    40KB

  • memory/848-0-0x000000007515E000-0x000000007515F000-memory.dmp

    Filesize

    4KB

  • memory/848-5-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/848-2-0x0000000005710000-0x0000000005CB4000-memory.dmp

    Filesize

    5.6MB

  • memory/848-9-0x0000000008230000-0x000000000828C000-memory.dmp

    Filesize

    368KB

  • memory/848-34-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/848-8-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/848-7-0x000000007515E000-0x000000007515F000-memory.dmp

    Filesize

    4KB

  • memory/848-1-0x0000000000690000-0x0000000000778000-memory.dmp

    Filesize

    928KB

  • memory/848-6-0x0000000005510000-0x000000000552E000-memory.dmp

    Filesize

    120KB

  • memory/1328-39-0x00000000057C0000-0x0000000005B14000-memory.dmp

    Filesize

    3.3MB

  • memory/1328-63-0x0000000007260000-0x000000000727A000-memory.dmp

    Filesize

    104KB

  • memory/1328-41-0x0000000005BE0000-0x0000000005BFE000-memory.dmp

    Filesize

    120KB

  • memory/1328-42-0x0000000005E30000-0x0000000005E7C000-memory.dmp

    Filesize

    304KB

  • memory/1328-43-0x00000000061C0000-0x00000000061F2000-memory.dmp

    Filesize

    200KB

  • memory/1328-44-0x00000000759E0000-0x0000000075A2C000-memory.dmp

    Filesize

    304KB

  • memory/1328-54-0x0000000006200000-0x000000000621E000-memory.dmp

    Filesize

    120KB

  • memory/1328-55-0x0000000006DF0000-0x0000000006E93000-memory.dmp

    Filesize

    652KB

  • memory/1328-56-0x0000000007560000-0x0000000007BDA000-memory.dmp

    Filesize

    6.5MB

  • memory/1328-57-0x0000000006F20000-0x0000000006F3A000-memory.dmp

    Filesize

    104KB

  • memory/1328-58-0x0000000006F90000-0x0000000006F9A000-memory.dmp

    Filesize

    40KB

  • memory/1328-59-0x00000000071A0000-0x0000000007236000-memory.dmp

    Filesize

    600KB

  • memory/1328-60-0x0000000007120000-0x0000000007131000-memory.dmp

    Filesize

    68KB

  • memory/1328-61-0x0000000007150000-0x000000000715E000-memory.dmp

    Filesize

    56KB

  • memory/1328-62-0x0000000007160000-0x0000000007174000-memory.dmp

    Filesize

    80KB

  • memory/1328-25-0x0000000004E30000-0x0000000004E52000-memory.dmp

    Filesize

    136KB

  • memory/1328-64-0x0000000007240000-0x0000000007248000-memory.dmp

    Filesize

    32KB

  • memory/1328-67-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/1328-31-0x0000000004ED0000-0x0000000004F36000-memory.dmp

    Filesize

    408KB

  • memory/1328-32-0x0000000004FB0000-0x0000000005016000-memory.dmp

    Filesize

    408KB

  • memory/1328-21-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/1328-19-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/1328-18-0x0000000005090000-0x00000000056B8000-memory.dmp

    Filesize

    6.2MB

  • memory/1328-15-0x0000000000CC0000-0x0000000000CF6000-memory.dmp

    Filesize

    216KB

  • memory/1328-17-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

  • memory/5068-88-0x0000000005FF0000-0x0000000006344000-memory.dmp

    Filesize

    3.3MB

  • memory/5068-95-0x00000000067B0000-0x00000000067FC000-memory.dmp

    Filesize

    304KB

  • memory/5068-96-0x0000000075A40000-0x0000000075A8C000-memory.dmp

    Filesize

    304KB

  • memory/5068-106-0x0000000007BC0000-0x0000000007BD1000-memory.dmp

    Filesize

    68KB