Analysis

  • max time kernel
    118s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    19-04-2021 10:52

General

  • Target

    8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e.exe

  • Size

    31KB

  • MD5

    a8342cc8da869ef50d515c763355f7e7

  • SHA1

    09c2016d87e1eec27d074f9f91ffcd327cee6765

  • SHA256

    8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e

  • SHA512

    d2d4e8d4d9298bba81c86e88b390caf1149d0dc1fe8da09667357a4215d83cd672a2aa10ae24207dea25ceaf831c4b3a51c6c23003c4d13d2ab88dbcfa46bde1

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

38.132.99.156:6606

38.132.99.156:7707

38.132.99.156:8808

thewatersmoney.hopto.org:6606

thewatersmoney.hopto.org:7707

thewatersmoney.hopto.org:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    7rQQflcP9GKgHFrUqTCHhu5LwhPUSqyV

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    Default

  • host

    38.132.99.156,thewatersmoney.hopto.org

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    6606,7707,8808

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e.exe
    "C:\Users\Admin\AppData\Local\Temp\8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:240
    • C:\Users\Admin\AppData\Local\Temp\8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e.exe
      "C:\Users\Admin\AppData\Local\Temp\8ad036d5f41579768454931925f1a273c98834a033507154f1db95f962dfd45e.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1516

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    MD5

    8fedf52bec30d11c1ade38803cbe2654

    SHA1

    02c8975d69b22beade3d44dce850354dbf27c672

    SHA256

    b69607fc59db2d3971bc7d14c1d8964738a6ea6ef589312832665d08494510a1

    SHA512

    a21ffcdb08731396424711af2671f422a760f4c2e4f6e4e8c488cedb76a90ed1fbaefba69cb6a8598f1df11f4d19e14452fe106381e8a0e7fe4ff3d6f00b5f5e

  • memory/240-66-0x0000000000000000-mapping.dmp
  • memory/1052-60-0x0000000000D10000-0x0000000000D11000-memory.dmp
    Filesize

    4KB

  • memory/1052-62-0x0000000075721000-0x0000000075723000-memory.dmp
    Filesize

    8KB

  • memory/1052-63-0x00000000045B0000-0x00000000045B1000-memory.dmp
    Filesize

    4KB

  • memory/1052-64-0x0000000000A00000-0x0000000000A29000-memory.dmp
    Filesize

    164KB

  • memory/1364-65-0x0000000000000000-mapping.dmp
  • memory/1516-68-0x000000000040C75E-mapping.dmp
  • memory/1516-67-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1516-69-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/1516-72-0x0000000004C40000-0x0000000004C41000-memory.dmp
    Filesize

    4KB