Analysis

  • max time kernel
    212s
  • max time network
    235s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2023, 18:52

General

  • Target

    NEAS.0ff4ee90b781b9f295724ef48a10de70_JC.exe

  • Size

    160KB

  • MD5

    0ff4ee90b781b9f295724ef48a10de70

  • SHA1

    77a57b29f1aab01ffe89d7ab9778035a393456e8

  • SHA256

    49281ec5f3bdbbe86268bddcdd59909573420a7d751639d9d10d66a48f3d5d4c

  • SHA512

    f29f8cd0ad8e27f579d0c787b84dfdcfab2e33601cb8f79469af1be3ec680e5c0a0e565dd47f3ce89b9b549885aebff3bd517155355bef2a731e5738e9e7ba78

  • SSDEEP

    3072:3rRIjYn+gbwtRJR6agMAZtxEYqGBoNcvyal5bx/jz1t5PWY:VdChB3AZtWOo5a3bNz1t4

Score
10/10

Malware Config

Signatures

  • AsyncRat

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

  • Async RAT payload 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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:\Users\Admin\AppData\Local\Temp\NEAS.0ff4ee90b781b9f295724ef48a10de70_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.0ff4ee90b781b9f295724ef48a10de70_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4556
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:392
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4256
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4915.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4808
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3572
      • C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
        "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp4915.tmp.bat

    Filesize

    157B

    MD5

    c272458fe2dc22ce9eb6fcd6d721b280

    SHA1

    820ffc70a003d25da8646f44e8a6d039ebcf2343

    SHA256

    1244a726739de62ef0fbc4cbadf688e861f1daf1fc4b929cdb530f68d752638e

    SHA512

    e95e460946047c5ae06f8331e419761d8e6cda724f4fce0c44861e79fe2ba0471eb352b45fad3d3f4eeac824af3bb96bb594502bee097056aad14b0670556ee0

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe

    Filesize

    160KB

    MD5

    0ff4ee90b781b9f295724ef48a10de70

    SHA1

    77a57b29f1aab01ffe89d7ab9778035a393456e8

    SHA256

    49281ec5f3bdbbe86268bddcdd59909573420a7d751639d9d10d66a48f3d5d4c

    SHA512

    f29f8cd0ad8e27f579d0c787b84dfdcfab2e33601cb8f79469af1be3ec680e5c0a0e565dd47f3ce89b9b549885aebff3bd517155355bef2a731e5738e9e7ba78

  • C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe

    Filesize

    160KB

    MD5

    0ff4ee90b781b9f295724ef48a10de70

    SHA1

    77a57b29f1aab01ffe89d7ab9778035a393456e8

    SHA256

    49281ec5f3bdbbe86268bddcdd59909573420a7d751639d9d10d66a48f3d5d4c

    SHA512

    f29f8cd0ad8e27f579d0c787b84dfdcfab2e33601cb8f79469af1be3ec680e5c0a0e565dd47f3ce89b9b549885aebff3bd517155355bef2a731e5738e9e7ba78

  • memory/4556-3-0x000000001B0F0000-0x000000001B100000-memory.dmp

    Filesize

    64KB

  • memory/4556-4-0x00007FFB65B90000-0x00007FFB65D85000-memory.dmp

    Filesize

    2.0MB

  • memory/4556-9-0x00007FFB48500000-0x00007FFB48FC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-10-0x00007FFB65B90000-0x00007FFB65D85000-memory.dmp

    Filesize

    2.0MB

  • memory/4556-2-0x00007FFB48500000-0x00007FFB48FC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-0-0x0000000000130000-0x000000000015E000-memory.dmp

    Filesize

    184KB

  • memory/4796-16-0x00007FFB477B0000-0x00007FFB48271000-memory.dmp

    Filesize

    10.8MB

  • memory/4796-17-0x00007FFB477B0000-0x00007FFB48271000-memory.dmp

    Filesize

    10.8MB

  • memory/4796-18-0x00007FFB65B90000-0x00007FFB65D85000-memory.dmp

    Filesize

    2.0MB

  • memory/4796-19-0x00007FFB65B90000-0x00007FFB65D85000-memory.dmp

    Filesize

    2.0MB