Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2024 10:29

General

  • Target

    bpaymentcopy.exe

  • Size

    765KB

  • MD5

    5205be9a501dae770c6e557b5fdaeebc

  • SHA1

    a8a34796e05ac4ff1a0b92bdbbaedc01e8cedfa5

  • SHA256

    aca540b3ad20e1fd49ec550107eff0c164990de1067a9542daf615465f82c331

  • SHA512

    e7177c8f6562363751dedf374195ed0c59ba478530ba58e2428a62ba40fbae73c9dc9f55cdf8890779a9a848c53d6fedd7bdb9658e995df7331d8eea6a05170d

  • SSDEEP

    12288:LXNrylgwbJqMBSlxaZmvB008Jz1vakTLAJnElBaSP6XQ2lfix4phRDiaZEAmD:MgwkMYxcmUzgkTL2FSPd2ExQhJ

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.britishcrowncourt.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @Hustle007ky1

Signatures

  • HawkEye

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

  • Hawkeye family
  • Detected Nirsoft tools 7 IoCs

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

  • NirSoft MailPassView 4 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 4 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.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 2 IoCs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
    "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4712
    • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
      "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1460
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3188
        • C:\Users\Admin\AppData\Roaming\Windows Update.exe
          "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
          4⤵
          • 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:1144
          • 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"
            5⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4212
          • 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"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50B

    MD5

    8f1f55a9e2fa4fc9931e78a47d81f0e1

    SHA1

    42d4baf7941041b6dcfb9888b32506abe4f63f51

    SHA256

    63a16e0b3871144e34e91db7c8f44b4f70c47aa1d48e1ec956e0d5451c72b3f3

    SHA512

    9a1426c3a77d93e9d068c27b3b8a5a8616eb91f0f457b6a2ab4652f24618f162c3d26b3b53af2cd827d11382f51b57444783b5040e0ad1db62f5ecf2df57de12

  • 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

    765KB

    MD5

    5205be9a501dae770c6e557b5fdaeebc

    SHA1

    a8a34796e05ac4ff1a0b92bdbbaedc01e8cedfa5

    SHA256

    aca540b3ad20e1fd49ec550107eff0c164990de1067a9542daf615465f82c331

    SHA512

    e7177c8f6562363751dedf374195ed0c59ba478530ba58e2428a62ba40fbae73c9dc9f55cdf8890779a9a848c53d6fedd7bdb9658e995df7331d8eea6a05170d

  • memory/556-57-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/556-49-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/556-50-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1144-35-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1144-44-0x000000000B320000-0x000000000B328000-memory.dmp

    Filesize

    32KB

  • memory/1144-41-0x0000000008E90000-0x0000000008EF6000-memory.dmp

    Filesize

    408KB

  • memory/1144-37-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-9-0x00000000053B0000-0x000000000544C000-memory.dmp

    Filesize

    624KB

  • memory/1460-15-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-12-0x0000000005680000-0x00000000056D6000-memory.dmp

    Filesize

    344KB

  • memory/1460-30-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-6-0x0000000000400000-0x0000000000494000-memory.dmp

    Filesize

    592KB

  • memory/1460-8-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-11-0x0000000005370000-0x000000000537A000-memory.dmp

    Filesize

    40KB

  • memory/1460-10-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3188-31-0x0000000005210000-0x0000000005224000-memory.dmp

    Filesize

    80KB

  • memory/3188-29-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3188-36-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3188-34-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4212-47-0x0000000000420000-0x00000000004E9000-memory.dmp

    Filesize

    804KB

  • memory/4212-48-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4212-46-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4212-45-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4712-0-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/4712-7-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4712-2-0x00000000058A0000-0x0000000005E44000-memory.dmp

    Filesize

    5.6MB

  • memory/4712-3-0x00000000052F0000-0x0000000005382000-memory.dmp

    Filesize

    584KB

  • memory/4712-5-0x0000000005250000-0x0000000005258000-memory.dmp

    Filesize

    32KB

  • memory/4712-13-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/4712-14-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4712-1-0x0000000000790000-0x0000000000858000-memory.dmp

    Filesize

    800KB

  • memory/4712-4-0x0000000002D70000-0x0000000002D84000-memory.dmp

    Filesize

    80KB