Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2024 18:37

General

  • Target

    client.exe

  • Size

    521KB

  • MD5

    2578480b80b3aa3ddbec90695c375eae

  • SHA1

    022e141419de6a895b75e3cd4bc549a049f661ee

  • SHA256

    e8107c2899dbe1bda257098d3ec2a561babb52d7d201a43fd3f3a8580cab728f

  • SHA512

    7040fba6260b3ef7b132d596c954be19f8c15a60c90f7ab8fddf0d7b4a07a29874b81d92f7fcc23c6364c37bf27d71d650b331db5b2a06daf7e5c9acff4cda85

  • SSDEEP

    6144:7utqVhunhbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnxH:7unhQtqB5urTIoYWBQk1E+VF9mOx9ki

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Hawkeye family
  • Detected Nirsoft tools 9 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\client.exe
    "C:\Users\Admin\AppData\Local\Temp\client.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4976
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:1112
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3200
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 1860
        3⤵
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:3356

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\SysInfo.txt

    Filesize

    44B

    MD5

    742160e4a4a1d12b2e9682bc6116fc9c

    SHA1

    bc3f16b140dfdbf5b4de6ee73659162d4f3ca2f4

    SHA256

    23c1afadb9dd7c91730ca7f9b483f2b4b2b5c9ff2fc6b095ee071e2c99f03a77

    SHA512

    2b49f5b5030298f3aa171d190afdfe61ed1e5bc409ddba64fb36c72656b8205afca9e325e4e4577acb9f66aafbb2bb5693255b313a2e293f2c7bdc7a8ab55875

  • C:\Users\Admin\AppData\Local\Temp\holderwb.txt

    Filesize

    3KB

    MD5

    f94dc819ca773f1e3cb27abbc9e7fa27

    SHA1

    9a7700efadc5ea09ab288544ef1e3cd876255086

    SHA256

    a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

    SHA512

    72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

  • C:\Users\Admin\AppData\Roaming\Windows Update.exe

    Filesize

    521KB

    MD5

    2578480b80b3aa3ddbec90695c375eae

    SHA1

    022e141419de6a895b75e3cd4bc549a049f661ee

    SHA256

    e8107c2899dbe1bda257098d3ec2a561babb52d7d201a43fd3f3a8580cab728f

    SHA512

    7040fba6260b3ef7b132d596c954be19f8c15a60c90f7ab8fddf0d7b4a07a29874b81d92f7fcc23c6364c37bf27d71d650b331db5b2a06daf7e5c9acff4cda85

  • memory/1112-33-0x0000000000420000-0x00000000004E9000-memory.dmp

    Filesize

    804KB

  • memory/1112-31-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1112-32-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1112-29-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1112-35-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1256-3-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/1256-0-0x00000000749B2000-0x00000000749B3000-memory.dmp

    Filesize

    4KB

  • memory/1256-18-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/1256-2-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/1256-1-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/3200-36-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/3200-38-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/3200-39-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/3200-47-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/4976-26-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-25-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-21-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-20-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-19-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-17-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB

  • memory/4976-54-0x00000000749B0000-0x0000000074F61000-memory.dmp

    Filesize

    5.7MB