Analysis

  • max time kernel
    93s
  • max time network
    149s
  • 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 20:23

General

  • Target

    file.exe

  • Size

    654KB

  • MD5

    ae806b6f5e02484c2be2b49da35b3d26

  • SHA1

    66ae8df94cd9e804fab01bc6be77cfec8d544226

  • SHA256

    7a31e73a61251309c51a343c14af5149915110c0f818747f7de78344739f21c5

  • SHA512

    8ea9cfe94bc4dbfc0a6c43b811461e6da4cab55fe6a3ddd1a4795f0887b2a311a6e9d9a464bb9253985c5a68cc206c36a703319463e5daca92adbe056e16a968

  • SSDEEP

    12288:77MfJIBvlbmLC3sCPtRzSXiBdja/z2UmG5pc4M1xK/5BFz2430RUwy9EXX+CNkkR:SIme3LLAiBdMmGpNkspz2i0RUwFOCND

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 34 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:1652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AtkzppDHiyvcIR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3548
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AtkzppDHiyvcIR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE242.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1408
    • 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:2928
      • 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:3872
        • 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:5072
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp11CE.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1828
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3892
        • 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:3224
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AtkzppDHiyvcIR.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1244
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AtkzppDHiyvcIR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5EA5.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2528
          • 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:4572

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

    b7b9acb869ccc7f7ecb5304ec0384dee

    SHA1

    6a90751c95817903ee833d59a0abbef425a613b3

    SHA256

    8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

    SHA512

    7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

  • 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

    5692e6aedc1f4b74d305a9f9e25c7bf5

    SHA1

    3143b0290751f51833263900046d844b724b21dc

    SHA256

    875f22383c05ab4b31f9afa36862bc474bb968cb8a931006b87c522014eb7e05

    SHA512

    5aefe5c2cfb377474e7a3497739596f166b317f49ece2c8b8d825d44ebe18384d440bc6505078c0fad0a6b10422d5a7e585349b15da4c712dc84d45913d3ddfa

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ob4pdrtc.cly.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp11CE.tmp.bat

    Filesize

    157B

    MD5

    9c1f1cbb5613e26fcf6de831b9d0f1bd

    SHA1

    37ab795af9a85e60d74b92299514288f314ade12

    SHA256

    76097747808a4981d3b14a069a40e3f599988e75183b46f2d1b12aa6b0158e27

    SHA512

    e3f346414e018e93106c09061614b5a4a8df349a5c660705c1699799831628cb320030ef3e66c1e579ad1c526cb8ccccfff9b5978cdc0a143184a55cf17838b7

  • C:\Users\Admin\AppData\Local\Temp\tmpE242.tmp

    Filesize

    1KB

    MD5

    f1ecf89230039f8702bb9fff297c0a8c

    SHA1

    be4172cf4aacdc140ba4528e2305e6ae7ef3f60d

    SHA256

    b86d2810250feef85e0dbdfeb7aed1cc0eabef271691f88bb3c796e3cd736d2a

    SHA512

    5a17fc6c551204285d8f385b046e5ec371419e92c52c53844f233ac3556a3fc1153dc636616efc8fe6524db57abe0ee4b8881a158672c6621c5f5e999adef9f6

  • 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

    654KB

    MD5

    ae806b6f5e02484c2be2b49da35b3d26

    SHA1

    66ae8df94cd9e804fab01bc6be77cfec8d544226

    SHA256

    7a31e73a61251309c51a343c14af5149915110c0f818747f7de78344739f21c5

    SHA512

    8ea9cfe94bc4dbfc0a6c43b811461e6da4cab55fe6a3ddd1a4795f0887b2a311a6e9d9a464bb9253985c5a68cc206c36a703319463e5daca92adbe056e16a968

  • memory/1244-92-0x00000000063D0000-0x0000000006724000-memory.dmp

    Filesize

    3.3MB

  • memory/1244-107-0x0000000007EE0000-0x0000000007EF4000-memory.dmp

    Filesize

    80KB

  • memory/1244-94-0x0000000006A00000-0x0000000006A4C000-memory.dmp

    Filesize

    304KB

  • memory/1244-95-0x0000000071230000-0x000000007127C000-memory.dmp

    Filesize

    304KB

  • memory/1244-105-0x0000000007BD0000-0x0000000007C73000-memory.dmp

    Filesize

    652KB

  • memory/1244-106-0x0000000007E90000-0x0000000007EA1000-memory.dmp

    Filesize

    68KB

  • memory/1652-11-0x00000000069C0000-0x0000000006A1E000-memory.dmp

    Filesize

    376KB

  • memory/1652-6-0x0000000005240000-0x000000000524A000-memory.dmp

    Filesize

    40KB

  • memory/1652-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

    Filesize

    4KB

  • memory/1652-1-0x00000000004F0000-0x0000000000596000-memory.dmp

    Filesize

    664KB

  • memory/1652-10-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1652-9-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

    Filesize

    4KB

  • memory/1652-8-0x0000000006710000-0x000000000672E000-memory.dmp

    Filesize

    120KB

  • memory/1652-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

    Filesize

    5.6MB

  • memory/1652-7-0x0000000005C80000-0x0000000005D1C000-memory.dmp

    Filesize

    624KB

  • memory/1652-38-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1652-5-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1652-4-0x0000000005270000-0x00000000055C4000-memory.dmp

    Filesize

    3.3MB

  • memory/1652-3-0x0000000004F70000-0x0000000005002000-memory.dmp

    Filesize

    584KB

  • memory/2928-22-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2928-67-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/2928-37-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/2928-71-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-40-0x0000000005FE0000-0x0000000005FFE000-memory.dmp

    Filesize

    120KB

  • memory/3548-55-0x00000000079D0000-0x000000000804A000-memory.dmp

    Filesize

    6.5MB

  • memory/3548-56-0x0000000007390000-0x00000000073AA000-memory.dmp

    Filesize

    104KB

  • memory/3548-57-0x0000000007400000-0x000000000740A000-memory.dmp

    Filesize

    40KB

  • memory/3548-58-0x0000000007610000-0x00000000076A6000-memory.dmp

    Filesize

    600KB

  • memory/3548-59-0x0000000007590000-0x00000000075A1000-memory.dmp

    Filesize

    68KB

  • memory/3548-60-0x00000000075C0000-0x00000000075CE000-memory.dmp

    Filesize

    56KB

  • memory/3548-61-0x00000000075D0000-0x00000000075E4000-memory.dmp

    Filesize

    80KB

  • memory/3548-62-0x00000000076D0000-0x00000000076EA000-memory.dmp

    Filesize

    104KB

  • memory/3548-63-0x00000000076B0000-0x00000000076B8000-memory.dmp

    Filesize

    32KB

  • memory/3548-66-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-54-0x0000000007240000-0x00000000072E3000-memory.dmp

    Filesize

    652KB

  • memory/3548-53-0x0000000006600000-0x000000000661E000-memory.dmp

    Filesize

    120KB

  • memory/3548-43-0x0000000075500000-0x000000007554C000-memory.dmp

    Filesize

    304KB

  • memory/3548-42-0x0000000006620000-0x0000000006652000-memory.dmp

    Filesize

    200KB

  • memory/3548-41-0x00000000060B0000-0x00000000060FC000-memory.dmp

    Filesize

    304KB

  • memory/3548-25-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-24-0x0000000005A40000-0x0000000005AA6000-memory.dmp

    Filesize

    408KB

  • memory/3548-21-0x00000000058C0000-0x00000000058E2000-memory.dmp

    Filesize

    136KB

  • memory/3548-23-0x0000000005960000-0x00000000059C6000-memory.dmp

    Filesize

    408KB

  • memory/3548-20-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-17-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-18-0x0000000005260000-0x0000000005888000-memory.dmp

    Filesize

    6.2MB

  • memory/3548-16-0x0000000002730000-0x0000000002766000-memory.dmp

    Filesize

    216KB