Analysis

  • max time kernel
    140s
  • max time network
    170s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-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 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Obfuscated with Agile.Net obfuscator 4 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2052
    • 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:2648
      • 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:2712
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8B5E.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2792
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2640
      • 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:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabAB20.tmp

    Filesize

    61KB

    MD5

    f3441b8572aae8801c04f3060b550443

    SHA1

    4ef0a35436125d6821831ef36c28ffaf196cda15

    SHA256

    6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

    SHA512

    5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

  • C:\Users\Admin\AppData\Local\Temp\TarAB52.tmp

    Filesize

    163KB

    MD5

    9441737383d21192400eca82fda910ec

    SHA1

    725e0d606a4fc9ba44aa8ffde65bed15e65367e4

    SHA256

    bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

    SHA512

    7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

  • C:\Users\Admin\AppData\Local\Temp\tmp8B5E.tmp.bat

    Filesize

    157B

    MD5

    78c287b210a9df0935a5d5f8a49c8e41

    SHA1

    bd9b789cbe737825505aa7c005907a481fd17af8

    SHA256

    2885c359a29cc9c8eac90f72ac06a7aff73174289ce394cb151559fb289c2c09

    SHA512

    c8d898d9f0bf73a6e679662dfcaaa44873d9a829f2df8799d45244e405846dd3efa9121297e4855223ce49cf2534cef51d7f25555196013b960a0a66af558e58

  • C:\Users\Admin\AppData\Local\Temp\tmp8B5E.tmp.bat

    Filesize

    157B

    MD5

    78c287b210a9df0935a5d5f8a49c8e41

    SHA1

    bd9b789cbe737825505aa7c005907a481fd17af8

    SHA256

    2885c359a29cc9c8eac90f72ac06a7aff73174289ce394cb151559fb289c2c09

    SHA512

    c8d898d9f0bf73a6e679662dfcaaa44873d9a829f2df8799d45244e405846dd3efa9121297e4855223ce49cf2534cef51d7f25555196013b960a0a66af558e58

  • 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/2052-3-0x000000001B350000-0x000000001B3D0000-memory.dmp

    Filesize

    512KB

  • memory/2052-0-0x0000000000880000-0x00000000008AE000-memory.dmp

    Filesize

    184KB

  • memory/2052-15-0x00000000778D0000-0x0000000077A79000-memory.dmp

    Filesize

    1.7MB

  • memory/2052-4-0x00000000778D0000-0x0000000077A79000-memory.dmp

    Filesize

    1.7MB

  • memory/2052-14-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

    Filesize

    9.9MB

  • memory/2052-1-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

    Filesize

    9.9MB

  • memory/2608-19-0x0000000000AB0000-0x0000000000ADE000-memory.dmp

    Filesize

    184KB

  • memory/2608-21-0x000007FEF5230000-0x000007FEF5C1C000-memory.dmp

    Filesize

    9.9MB

  • memory/2608-22-0x000000001B0F0000-0x000000001B170000-memory.dmp

    Filesize

    512KB

  • memory/2608-23-0x00000000778D0000-0x0000000077A79000-memory.dmp

    Filesize

    1.7MB

  • memory/2608-58-0x000007FEF5230000-0x000007FEF5C1C000-memory.dmp

    Filesize

    9.9MB

  • memory/2608-59-0x00000000778D0000-0x0000000077A79000-memory.dmp

    Filesize

    1.7MB