Analysis

  • max time kernel
    140s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 05:52

General

  • Target

    72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe

  • Size

    878KB

  • MD5

    72d1a18668b9c354bec0c1f4bb282503

  • SHA1

    940cb647752ed13c34ea021f7617312960a61e35

  • SHA256

    97de910f99c0d563605040f89beb13ca559618e7a3572d57ec430cdc861761c3

  • SHA512

    91f1dfccb4b12ac2a46876da7422ec20865fd00c91ca06a2288cfe85787794b3b81bdd6bfc0f6a78ef70dfe1e2cf8112c94efc4f7b78d4318f99762d3f6a49a1

  • SSDEEP

    768:UfQf38+WbFafW237K6DpM38IDq+R6qc1CUMXfptSX5ItFaOT8MOrhI:Ub8MOy

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

asdfdsg.duckdns.org:8050

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Turns off Windows Defender SpyNet reporting 2 TTPs
  • Windows security bypass 2 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Windows security modification 2 TTPs 11 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 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
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies Windows Defender Real-time Protection settings
    • Windows security bypass
    • Checks computer location settings
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1160
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5044
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4984
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1412
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2780
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1168
    • C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe"
      2⤵
        PID:2564
      • C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\72d1a18668b9c354bec0c1f4bb282503_JaffaCakes118.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:3328
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 2268
        2⤵
        • Program crash
        PID:3404
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3100 -ip 3100
      1⤵
        PID:4988

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • 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

        be9267ce21fba4580e823c7a3d114524

        SHA1

        2452fb395b57d2878b64ba7b0c3597fff8e1df11

        SHA256

        f43f6c2c70a03395bca4488df33d954a1d5a96a6c4b2ab79e00bc6bd9edb876d

        SHA512

        c3da5b61a34a5dc00f3920b1d03b2c2bb787a3bf8216cff454f7d93882093641a1b1ecbc9792d88d3a52556a4b8a1f7a41eb6c3ddf03ef232403bb38940d8db6

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

        Filesize

        18KB

        MD5

        5416fd86993f134d023843406f6d1bae

        SHA1

        654da2a93c9900ccd2332e60aadbf27aa5416764

        SHA256

        5ba45b6f984af4add4a33e17bb220b7b216a8307f34518ca800ea3fa32b4defd

        SHA512

        9c38cfe4ad0531bb3d31ad4ea8c5da30f5be9e1e2e6697b27e4a1dbbf1dc9e8bf4ac222e89c909a9e59f4ae11bbd851d0960a70befb199a4cbf8678aa18905b5

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

        Filesize

        18KB

        MD5

        e3d9e684677ccf7e4931960136925120

        SHA1

        6a6e96f57a857cb475f5beea78c810b26053236a

        SHA256

        b2adf876f7de20b0d7c20051e0bbbce8fa7995e65225879d486bcde7852af8da

        SHA512

        125240b4c53e04532876d6537b78f8232ea9565669aa51cba9f5cf673036d9d4ba32cb72ce2bc0b9c7a31aa26a7837752b0e2a4788ac46a3a850aebcec53673a

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fxoca0tp.qce.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/1160-10-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/1160-15-0x00000000057D0000-0x0000000005836000-memory.dmp

        Filesize

        408KB

      • memory/1160-9-0x0000000005130000-0x0000000005758000-memory.dmp

        Filesize

        6.2MB

      • memory/1160-8-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/1160-69-0x0000000070370000-0x00000000703BC000-memory.dmp

        Filesize

        304KB

      • memory/1160-124-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/1160-7-0x00000000025F0000-0x0000000002626000-memory.dmp

        Filesize

        216KB

      • memory/1160-13-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/1160-16-0x00000000058B0000-0x0000000005916000-memory.dmp

        Filesize

        408KB

      • memory/1160-18-0x0000000005920000-0x0000000005C74000-memory.dmp

        Filesize

        3.3MB

      • memory/1160-103-0x0000000007290000-0x000000000729A000-memory.dmp

        Filesize

        40KB

      • memory/1160-14-0x0000000004F40000-0x0000000004F62000-memory.dmp

        Filesize

        136KB

      • memory/1412-100-0x0000000007A60000-0x0000000007B03000-memory.dmp

        Filesize

        652KB

      • memory/1412-59-0x0000000070370000-0x00000000703BC000-memory.dmp

        Filesize

        304KB

      • memory/1412-104-0x0000000007E10000-0x0000000007EA6000-memory.dmp

        Filesize

        600KB

      • memory/1412-58-0x0000000007A00000-0x0000000007A32000-memory.dmp

        Filesize

        200KB

      • memory/1412-109-0x0000000007DD0000-0x0000000007DE4000-memory.dmp

        Filesize

        80KB

      • memory/3100-3-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/3100-0-0x000000007520E000-0x000000007520F000-memory.dmp

        Filesize

        4KB

      • memory/3100-123-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/3100-5-0x00000000053C0000-0x0000000005964000-memory.dmp

        Filesize

        5.6MB

      • memory/3100-1-0x0000000000170000-0x0000000000250000-memory.dmp

        Filesize

        896KB

      • memory/3100-2-0x0000000004BB0000-0x0000000004C4C000-memory.dmp

        Filesize

        624KB

      • memory/3100-4-0x0000000004B50000-0x0000000004B78000-memory.dmp

        Filesize

        160KB

      • memory/3328-107-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/4984-28-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/4984-57-0x00000000064F0000-0x000000000653C000-memory.dmp

        Filesize

        304KB

      • memory/4984-56-0x00000000064D0000-0x00000000064EE000-memory.dmp

        Filesize

        120KB

      • memory/4984-89-0x0000000070370000-0x00000000703BC000-memory.dmp

        Filesize

        304KB

      • memory/4984-114-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/4984-111-0x0000000007B20000-0x0000000007B28000-memory.dmp

        Filesize

        32KB

      • memory/4984-110-0x0000000007B40000-0x0000000007B5A000-memory.dmp

        Filesize

        104KB

      • memory/5044-12-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/5044-108-0x0000000007440000-0x000000000744E000-memory.dmp

        Filesize

        56KB

      • memory/5044-105-0x0000000007410000-0x0000000007421000-memory.dmp

        Filesize

        68KB

      • memory/5044-101-0x0000000007850000-0x0000000007ECA000-memory.dmp

        Filesize

        6.5MB

      • memory/5044-102-0x0000000007210000-0x000000000722A000-memory.dmp

        Filesize

        104KB

      • memory/5044-99-0x0000000006EA0000-0x0000000006EBE000-memory.dmp

        Filesize

        120KB

      • memory/5044-120-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/5044-79-0x0000000070370000-0x00000000703BC000-memory.dmp

        Filesize

        304KB

      • memory/5044-17-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB

      • memory/5044-11-0x0000000075200000-0x00000000759B0000-memory.dmp

        Filesize

        7.7MB