Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-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
  • 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.

  • Drops startup file 2 IoCs
  • Windows security modification 2 TTPs 9 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 13 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 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
    • 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:2528
    • 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:3052
    • 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:2244
    • 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:2836
    • 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:2104
    • 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:1688
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1736
    • 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:1060
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2528 -s 912
      2⤵
      • Program crash
      PID:1860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\HFTX6UPBMVI543NZ7SU4.temp

    Filesize

    7KB

    MD5

    41d860188499269347bc46ea5c84560e

    SHA1

    61a474246bf964b3cf7dc0b171224de7b45a545a

    SHA256

    4ba80db95af0a32dbc1fe5d73abad1d49ef11c7dca8e93d291b8920fbb977a33

    SHA512

    7085c3c947f16cdfad83ca58fad4bcbcfcf07e6ba4da490f96f0bb2669f3f898f9fc56871416f99017f8da8fbba89a2b0a410e01518ad0fdc825df0d658be16c

  • memory/1060-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1060-31-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-24-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-26-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-22-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-34-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-32-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1060-28-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2528-0-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/2528-2-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB

  • memory/2528-1-0x0000000000E70000-0x0000000000F50000-memory.dmp

    Filesize

    896KB

  • memory/2528-3-0x00000000004E0000-0x0000000000508000-memory.dmp

    Filesize

    160KB

  • memory/2528-35-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/2528-36-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB