Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-06-2024 14:14

General

  • Target

    PG73830273-RT8939933-106573737-WA.exe

  • Size

    700KB

  • MD5

    61d83cd9dcb9599726ac8a7237854537

  • SHA1

    962d76027061ed0e1fc13df2235f2d17a441b591

  • SHA256

    d862de550b07302770f3b05b441c57c75dff0425fe41b7981ecff7386049e24b

  • SHA512

    381c34cac16f20293c9c74a802043d2f6b231e2556a0af2e56f86ce94ffa4abb1a10ad51a1bb8a5de69e71aad5c551a95735e153296beb946b7cdac4fe092bd5

  • SSDEEP

    12288:ceSB3+wgWlty8g1DI+VZG1SWSRezMRFLrdcdMANPKKvkR:ceSZgWl8X1DIgG1lSPRLWMANpq

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

zaragoza.ddns.net:5480

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    fwqoouQWEGr.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • 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 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
    "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2236
    • 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\PG73830273-RT8939933-106573737-WA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1084
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pBJOGuhiQV.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pBJOGuhiQV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4E6.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2248
    • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
      "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
      2⤵
        PID:3172
      • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
        "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
        2⤵
          PID:3492
        • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
          "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
          2⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:5040
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4068 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:3580

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Execution

        Command and Scripting Interpreter

        1
        T1059

        PowerShell

        1
        T1059.001

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Persistence

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Privilege Escalation

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PG73830273-RT8939933-106573737-WA.exe.log
          Filesize

          1KB

          MD5

          8ec831f3e3a3f77e4a7b9cd32b48384c

          SHA1

          d83f09fd87c5bd86e045873c231c14836e76a05c

          SHA256

          7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

          SHA512

          26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

        • 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

          823fde8ae15ce1bbb1075a0c538200d0

          SHA1

          573fe5ef51a10b54d59d6b92f77f214c35873a40

          SHA256

          1c4f6a6c462f22c3b75be3b9235d9ae515b8a8deead7fc97391ab238241374ce

          SHA512

          5fdb9862c14227a3ec3fb4a41a2887705d6fdda11aa752f2e53b3e04a34800742d97015149804cac8cc7a2ccf6738327070f3daa322e283a2c7cb1bebc7ab098

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nivhvnbo.st4.ps1
          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpA4E6.tmp
          Filesize

          1KB

          MD5

          ad154f43cbb946ff94b22f41c3745487

          SHA1

          813983b270161dfea195c3aeaff78113658d45f5

          SHA256

          ea64f3070f14dc68b86562e96cbc022395c9e34dd56317a2327373427f98a3ad

          SHA512

          b1f4c1d2ff6856bb41bb77249a51db818afa9b0d291986627e507c129a720b21ac77155ab655e5d7ae3f00f4f4abf04784168e507ba949b66b98b21fc08645f3

        • memory/1084-76-0x0000000007690000-0x0000000007733000-memory.dmp
          Filesize

          652KB

        • memory/1084-95-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/1084-42-0x0000000006030000-0x0000000006384000-memory.dmp
          Filesize

          3.3MB

        • memory/1084-86-0x0000000007CB0000-0x0000000007CCA000-memory.dmp
          Filesize

          104KB

        • memory/1084-85-0x0000000007BB0000-0x0000000007BC4000-memory.dmp
          Filesize

          80KB

        • memory/1084-84-0x0000000007BA0000-0x0000000007BAE000-memory.dmp
          Filesize

          56KB

        • memory/1084-83-0x0000000007B70000-0x0000000007B81000-memory.dmp
          Filesize

          68KB

        • memory/1084-80-0x0000000007BF0000-0x0000000007C86000-memory.dmp
          Filesize

          600KB

        • memory/1084-75-0x0000000006C00000-0x0000000006C1E000-memory.dmp
          Filesize

          120KB

        • memory/1084-16-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/1084-17-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/1084-18-0x0000000002D10000-0x0000000002D46000-memory.dmp
          Filesize

          216KB

        • memory/1084-21-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/1084-22-0x0000000005910000-0x0000000005F38000-memory.dmp
          Filesize

          6.2MB

        • memory/1084-55-0x0000000074D40000-0x0000000074D8C000-memory.dmp
          Filesize

          304KB

        • memory/1084-24-0x0000000005680000-0x00000000056A2000-memory.dmp
          Filesize

          136KB

        • memory/1084-54-0x0000000007650000-0x0000000007682000-memory.dmp
          Filesize

          200KB

        • memory/1084-53-0x0000000006680000-0x00000000066CC000-memory.dmp
          Filesize

          304KB

        • memory/1084-27-0x0000000005790000-0x00000000057F6000-memory.dmp
          Filesize

          408KB

        • memory/1084-26-0x0000000005720000-0x0000000005786000-memory.dmp
          Filesize

          408KB

        • memory/2236-4-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/2236-3-0x00000000055D0000-0x0000000005662000-memory.dmp
          Filesize

          584KB

        • memory/2236-0-0x00000000744BE000-0x00000000744BF000-memory.dmp
          Filesize

          4KB

        • memory/2236-6-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/2236-8-0x0000000008340000-0x0000000008350000-memory.dmp
          Filesize

          64KB

        • memory/2236-7-0x0000000008320000-0x000000000833A000-memory.dmp
          Filesize

          104KB

        • memory/2236-48-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/2236-1-0x00000000009F0000-0x0000000000AA2000-memory.dmp
          Filesize

          712KB

        • memory/2236-2-0x0000000005AE0000-0x0000000006084000-memory.dmp
          Filesize

          5.6MB

        • memory/2236-9-0x0000000008550000-0x00000000085A4000-memory.dmp
          Filesize

          336KB

        • memory/2236-13-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/2236-10-0x000000000ACE0000-0x000000000AD7C000-memory.dmp
          Filesize

          624KB

        • memory/2236-11-0x00000000744BE000-0x00000000744BF000-memory.dmp
          Filesize

          4KB

        • memory/2236-5-0x00000000054B0000-0x00000000054BA000-memory.dmp
          Filesize

          40KB

        • memory/2236-12-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/3540-25-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/3540-78-0x0000000007C20000-0x0000000007C3A000-memory.dmp
          Filesize

          104KB

        • memory/3540-94-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/3540-23-0x00000000744B0000-0x0000000074C60000-memory.dmp
          Filesize

          7.7MB

        • memory/3540-77-0x0000000008260000-0x00000000088DA000-memory.dmp
          Filesize

          6.5MB

        • memory/3540-87-0x0000000007F60000-0x0000000007F68000-memory.dmp
          Filesize

          32KB

        • memory/3540-56-0x0000000074D40000-0x0000000074D8C000-memory.dmp
          Filesize

          304KB

        • memory/3540-79-0x0000000007C90000-0x0000000007C9A000-memory.dmp
          Filesize

          40KB

        • memory/3540-52-0x0000000006920000-0x000000000693E000-memory.dmp
          Filesize

          120KB

        • memory/5040-29-0x0000000000400000-0x0000000000412000-memory.dmp
          Filesize

          72KB