Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2023, 05:13

General

  • Target

    t.ps1

  • Size

    256KB

  • MD5

    ec3fb005182c03e31ad5f652fcaf433a

  • SHA1

    1d1533e4c07dc0f21235e2011f1e99e263aa1114

  • SHA256

    6e39cc4bf7d911b9b6b47d0ca860df4b405386a8232943cd9e4a7f03d2027c0c

  • SHA512

    8ce1740ff066dae5edeffd56fe79e597a66ecce8e4fc83563c2e772461a4e5978aa44db531f74fad38db0a1e0aae0d4d9bf53cba3b43daa77f45b43be2e8fb78

  • SSDEEP

    6144:dhMHd8wF9VtLr3EXGpI5cGIE+QI33INenAZYn+FphxVC4werLfEM2QI6ii4jqJrB:0Ht9VtLr3EXGpI5cGIp3INenAZQ+Fphx

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

C2

ghoss.freeddns.org:6606

ghoss.freeddns.org:7707

ghoss.freeddns.org:8808

Mutex

AsyncMutex_6SI68OkPnk

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#.

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\t.ps1
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4680
    • C:\Windows\system32\schtasks.exe
      "C:\Windows\system32\schtasks.exe" /create /sc minute /mo 2 /tn PDF /tr C:\ProgramData\PDF\PDF.vbs
      2⤵
      • Creates scheduled task(s)
      PID:1160
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\ProgramData\PDF\PDF.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4588
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\PDF\1.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1276
      • C:\Windows\system32\cmd.exe
        CMD /C powershell -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\PDF\PDF.ps1"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3596
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NOP -WIND HIDDEN -eXEC BYPASS -NONI "C:\ProgramData\PDF\PDF.ps1"
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:5000
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3148

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\PDF\1.bat

          Filesize

          89B

          MD5

          a7f20549327da521bf176b6faa76e623

          SHA1

          b9b22202b9d3d43ffa6cbf2f3f81dc7f5b06c605

          SHA256

          a2099940d9f7f9a0a603a5a36ef2b24eef49f2cb428539949a6d75261faaba46

          SHA512

          5cac6f996aa1bb4dd11a39d3001da243c6f020bc1a3d86a36ec773d45e479514b006e3b3d8782b1eaab628d0fefdb987495308b9c88f38667f875179771f4823

        • C:\ProgramData\PDF\PDF.ps1

          Filesize

          255KB

          MD5

          ee39cd0d14321044da4e3e548392983c

          SHA1

          4f04ebde6c0d04a5837bc81d062d7b14f7738168

          SHA256

          86f1d81d4d4f866442b384394e35d1a8058bbe843cc0d8896b1655d3ab3cf886

          SHA512

          bd2817d4ef8367a0c2f7dfc838aef559c16a703d95f887b053da3bde95f4ab709cbbfde2b22c829d9dccb52abb8a708868a0f327031eeae9584764d3fc3a7ad4

        • C:\ProgramData\PDF\PDF.vbs

          Filesize

          120B

          MD5

          30e4773314799aa0e1fd7761cae6e609

          SHA1

          d1b5a371a7555e99a7602ae6ee8028ac0f0462c4

          SHA256

          dc592583d072f325b7a0a54d53499f32ef95c731344cc10400f0bb03e7db4720

          SHA512

          fcbeca634cb6fe2d0ea4f726f09b4a35917615467a562e9d73cd235cd337bb797fb6a996f0569e83f4f858c0226b84fbd2d0721bea47d1039e5ffe6ebca0bb8d

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          3KB

          MD5

          223bd4ae02766ddc32e6145fd1a29301

          SHA1

          900cfd6526d7e33fb4039a1cc2790ea049bc2c5b

          SHA256

          1022ec2fed08ff473817fc53893e192a8e33e6a16f3d2c8cb6fd37f49c938e1e

          SHA512

          648cd3f8a89a18128d2b1bf960835e087a74cdbc783dbfcc712b3cb9e3a2e4f715e534ba2ef81d89af8f60d4882f6859373248c875ceb26ad0922e891f2e74cc

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

          Filesize

          1KB

          MD5

          bd84a249acecea9fba0df3d01b8305c0

          SHA1

          c7161dbd390d2d64925a9f987b1e41f42eca1d4d

          SHA256

          aea560ffda4a850a53cda513f0b5b50322563d52690fe5b07764615638d8e160

          SHA512

          d8897507207440daada3ff7ff33976bac8281dea68424174c799bd4b68e0358bab395246c0f1d4c13328d7f478b218ab9e1be8959b32f28a1eeba199c746f676

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yqqzirya.lxy.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/3148-172-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/3148-174-0x00000000051B0000-0x00000000051C0000-memory.dmp

          Filesize

          64KB

        • memory/3148-179-0x0000000006140000-0x00000000061A6000-memory.dmp

          Filesize

          408KB

        • memory/3148-178-0x00000000060A0000-0x000000000613C000-memory.dmp

          Filesize

          624KB

        • memory/3148-177-0x00000000055D0000-0x00000000055DA000-memory.dmp

          Filesize

          40KB

        • memory/3148-176-0x00000000055E0000-0x0000000005672000-memory.dmp

          Filesize

          584KB

        • memory/3148-175-0x00000000059B0000-0x0000000005F54000-memory.dmp

          Filesize

          5.6MB

        • memory/4680-145-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/4680-138-0x000001CE4E880000-0x000001CE4E8A2000-memory.dmp

          Filesize

          136KB

        • memory/4680-143-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/4680-144-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/4680-152-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/4680-150-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/4680-151-0x000001CE4C6D0000-0x000001CE4C6E0000-memory.dmp

          Filesize

          64KB

        • memory/5000-171-0x0000014C9D880000-0x0000014C9D890000-memory.dmp

          Filesize

          64KB

        • memory/5000-170-0x0000014C9D880000-0x0000014C9D890000-memory.dmp

          Filesize

          64KB