Analysis

  • max time kernel
    95s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 14:52

General

  • Target

    d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe

  • Size

    540KB

  • MD5

    a9d161bde9f720d350385f4ef3265e95

  • SHA1

    fad1daa4408dbf3ce9a478805167e5c0c30ddbac

  • SHA256

    d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6

  • SHA512

    09cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b

  • SSDEEP

    6144:uu6GGWdMkbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnxY:rQtqB5urTIoYWBQk1E+VF9mOx9Sww

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 13 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 3 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 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe
    "C:\Users\Admin\AppData\Local\Temp\d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Executes dropped EXE
      • Deletes itself
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1644
      • 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:700
      • 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⤵
          PID:2012

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      102B

      MD5

      ef0efecd1b5d82b386501ff33f3fdf8e

      SHA1

      bcff727c9ec55dcf816d831e0831ce4d7e5af6d0

      SHA256

      b56510fd5378138d0671cd32a54d1784fcc506567a04311a101161c412b21d8f

      SHA512

      dffdbcdc20b25683d2c3d4585b6cf7bdaccb36d6458727c6c7a4c8e3eb5fbb2cb6b47e08b358e53387c1f568095901f3ad93d14e566fe028cb99ee7d2ed080c5

    • C:\Users\Admin\AppData\Local\Temp\holdermail.txt
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      540KB

      MD5

      a9d161bde9f720d350385f4ef3265e95

      SHA1

      fad1daa4408dbf3ce9a478805167e5c0c30ddbac

      SHA256

      d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6

      SHA512

      09cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b

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

      540KB

      MD5

      a9d161bde9f720d350385f4ef3265e95

      SHA1

      fad1daa4408dbf3ce9a478805167e5c0c30ddbac

      SHA256

      d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6

      SHA512

      09cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b

    • \Users\Admin\AppData\Roaming\Windows Update.exe
      Filesize

      540KB

      MD5

      a9d161bde9f720d350385f4ef3265e95

      SHA1

      fad1daa4408dbf3ce9a478805167e5c0c30ddbac

      SHA256

      d706d23cedad9d25ba4cbe0614fef26c9cf65eafbbc0f516970a358908773fa6

      SHA512

      09cf059d4727cba79686918f4a28bce8bb043c11a19e115d4b53b1bdf217ea64922e75570ed4ff39bd60083d981535235294160a3ea179d1d480d32139f0292b

    • memory/700-66-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/700-72-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/700-73-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/700-67-0x0000000000411654-mapping.dmp
    • memory/700-70-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1460-62-0x0000000074D80000-0x000000007532B000-memory.dmp
      Filesize

      5.7MB

    • memory/1460-55-0x0000000074D80000-0x000000007532B000-memory.dmp
      Filesize

      5.7MB

    • memory/1460-56-0x0000000074D80000-0x000000007532B000-memory.dmp
      Filesize

      5.7MB

    • memory/1460-54-0x0000000075F81000-0x0000000075F83000-memory.dmp
      Filesize

      8KB

    • memory/1644-71-0x0000000002155000-0x0000000002166000-memory.dmp
      Filesize

      68KB

    • memory/1644-58-0x0000000000000000-mapping.dmp
    • memory/1644-65-0x0000000074D80000-0x000000007532B000-memory.dmp
      Filesize

      5.7MB

    • memory/1644-63-0x0000000074D80000-0x000000007532B000-memory.dmp
      Filesize

      5.7MB

    • memory/1644-82-0x0000000002155000-0x0000000002166000-memory.dmp
      Filesize

      68KB

    • memory/2012-74-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2012-75-0x0000000000442628-mapping.dmp
    • memory/2012-78-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2012-79-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2012-80-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB