Analysis

  • max time kernel
    171s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 02:53

General

  • Target

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe

  • Size

    502KB

  • MD5

    849e250bf6b07de0fc59385ab77a72e8

  • SHA1

    5fd880f856e032e0f654899475df242c0bb9ab34

  • SHA256

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

  • SHA512

    6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

  • SSDEEP

    6144:grLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bHL:grLQtqB5urTIoYWBQk1E+VF9mOx9n

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 6 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 7 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe
    "C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1572
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5056
      • 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
        PID:4484
      • 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⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1576

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    102B

    MD5

    6ebb2651a36b906645147fbd608974cc

    SHA1

    b5be3a0edd36c0c9f08ac5e26e10d06faa5aad52

    SHA256

    d5a83d1cebeeb65f85cbb76169fe18a2fe392e343176ad7e1530b8d46323ba1d

    SHA512

    8e6a901b16f83bbb47f1ec9c2d7e6b3b5b9bc430a1898ca0c19d8de7a3cd926df224e64e2789521a489a71bbc16418e3b73ae1c957fc675919dc3618d7ce2ca9

  • 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

    502KB

    MD5

    849e250bf6b07de0fc59385ab77a72e8

    SHA1

    5fd880f856e032e0f654899475df242c0bb9ab34

    SHA256

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

    SHA512

    6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

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

    Filesize

    502KB

    MD5

    849e250bf6b07de0fc59385ab77a72e8

    SHA1

    5fd880f856e032e0f654899475df242c0bb9ab34

    SHA256

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

    SHA512

    6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

  • memory/1572-133-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1572-137-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1572-132-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/1576-146-0x0000000000000000-mapping.dmp

  • memory/1576-152-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1576-150-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1576-149-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1576-147-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/4484-140-0x0000000000000000-mapping.dmp

  • memory/4484-144-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4484-143-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4484-141-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/5056-145-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/5056-138-0x0000000075440000-0x00000000759F1000-memory.dmp

    Filesize

    5.7MB

  • memory/5056-134-0x0000000000000000-mapping.dmp