Analysis

  • max time kernel
    270s
  • max time network
    270s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    08/09/2020, 13:53

General

  • Target
    f5d002bfe80b48386a6c99c41528931b7f5df736cd34094463c3f85dde0180bf.exe
  • Size 211KB
  • Sample200908-78xbfgykyn
  • SHA256 f5d002bfe80b48386a6c99c41528931b7f5df736cd34094463c3f85dde0180bf
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • InfinityLock Ransomware

    Also known as InfinityCrypt. Based on the open-source HiddenTear ransomware.

  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops file in Program Files directory 2779 IoCs
  • Drops file in Windows directory 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5d002bfe80b48386a6c99c41528931b7f5df736cd34094463c3f85dde0180bf.exe
    "C:\Users\Admin\AppData\Local\Temp\f5d002bfe80b48386a6c99c41528931b7f5df736cd34094463c3f85dde0180bf.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:3692
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:820

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3692-0-0x0000000073670000-0x0000000073D5E000-memory.dmp

        memory/3692-1-0x0000000000D30000-0x0000000000D31000-memory.dmp

        memory/3692-3-0x00000000055F0000-0x00000000055F1000-memory.dmp

        memory/3692-4-0x0000000005B90000-0x0000000005B91000-memory.dmp

        memory/3692-5-0x0000000005690000-0x0000000005691000-memory.dmp

        memory/3692-6-0x0000000005590000-0x0000000005591000-memory.dmp

        memory/3692-7-0x0000000005850000-0x0000000005851000-memory.dmp

        memory/3692-8-0x0000000007350000-0x0000000007351000-memory.dmp