Overview

overview

10

Static

static

10

Shellbag analyzer.exe

windows7-x64

10

Shellbag analyzer.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    599s
  • max time network
    603s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 18:07

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General

  • Target

    Shellbag analyzer.exe

  • Size

    247KB

  • MD5

    e5dc76743d789ff02bc6f747804fd327

  • SHA1

    b96c2778e123656266782da48f8b9a84918c8fc2

  • SHA256

    24e23f8bcdde00e6158591a10b0e195d525315fd4cabc0de541ac27f9c17f8bc

  • SHA512

    dc6fa31d3b12bf2786b76bbf74c7d2ef13e5f2a0b09082e693b004fad2efa67eef90cac7586ec43c64705dedcb57cebfd11c865b16706aac2452318842db700d

  • SSDEEP

    6144:iPEGPMVOrVbjlnwF9kfK8rpClz0KBb6o589GHWHWujiSPbp:iPEU9lhgBuj/PV

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Attributes
  • delay

    1

  • install

    true

  • install_file

    update.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/hntWwyYn

aes.plain

Signatures

  • AsyncRat

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

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

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

  • Executes dropped EXE 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shellbag analyzer.exe
    "C:\Users\Admin\AppData\Local\Temp\Shellbag analyzer.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:556
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1536
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB7C7.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5060
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1220
      • C:\Users\Admin\AppData\Roaming\update.exe
        "C:\Users\Admin\AppData\Roaming\update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB7C7.tmp.bat
    Filesize

    150B

    MD5

    ead9cb74898e3758957b33e467dd1532

    SHA1

    0b62c904272ab5ff1275522019ae40cf05b6dc5a

    SHA256

    5d8c85a6c95a9875939b93b5084efab40c1c6a03678c5949437fe272c96e1ee3

    SHA512

    e16b68400b1e8c97b75d3f2b1bdbbf23a22b246438a2a9e45ba15f3aa5e9eaa456265cb05e4c4cc36c4fe5d971310f2f49b92fafb34c73f1e3b7014bc9577eb4

    Download Submit

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

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit

  • C:\Users\Admin\AppData\Roaming\update.exe
    Filesize

    247KB

    MD5

    e5dc76743d789ff02bc6f747804fd327

    SHA1

    b96c2778e123656266782da48f8b9a84918c8fc2

    SHA256

    24e23f8bcdde00e6158591a10b0e195d525315fd4cabc0de541ac27f9c17f8bc

    SHA512

    dc6fa31d3b12bf2786b76bbf74c7d2ef13e5f2a0b09082e693b004fad2efa67eef90cac7586ec43c64705dedcb57cebfd11c865b16706aac2452318842db700d

    Download Submit

  • memory/2924-1-0x00007FFCA9BA3000-0x00007FFCA9BA5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2924-0-0x0000000000090000-0x00000000000D4000-memory.dmp

    Filesize

    272KB

    Download

  • memory/2924-3-0x00007FFCA9BA0000-0x00007FFCAA661000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2924-8-0x00007FFCA9BA0000-0x00007FFCAA661000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2924-9-0x00007FFCA9BA0000-0x00007FFCAA661000-memory.dmp

    Filesize

    10.8MB

    Download