Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    09-05-2021 08:21

General

  • Target

    LegionLocker3.0.exe

  • Size

    3.0MB

  • MD5

    cdccf5b587aac1a4aeb53f8aaa465759

  • SHA1

    3d804d15282a5b031684cc6bd8b9b7d9d880d13d

  • SHA256

    f6289c13d79d8de611e9c143602298970b5969c15a4d6a3e40efec794bc371dd

  • SHA512

    61668842acbb52c8c1e35e5ba4cca412ea1a56b4de6e3adb58f158cee77f8e04e24be99bbbc92c5f551afc2bbe45cf9c99c7b0b63affb8cef3d6718dc0c950f3

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\LegionReadMe.txt

Ransom Note
Ooops! All your important files are encrypted! What happend to my computer? All your important files are encrypted. No one can help you to restore files without our special decryptor Backups were either encrypted or deleted. Shadow copies also removed. If you want to restore some of your files for free write to email (contact is below) and attach 2-3 encrypted files. You will receive decrypted samples. Please don't forget to attach ID.txt file in the e-mail. To decrypt other files you have to pay $50. How do i pay? Payment is accepted in Bitcoin only. Please check the current price of Bitcoin and buy some Bitcoins. And send the correct amount to the address specified at the bottom of the sheet. Contact: 1.Download Tor browser (https://www.torproject.org/) 2.Create account on mail2tor (http://mail2tor2zyjdctd.onion/) 3.Write email to us ([email protected]) In case of no anwser in 72 hours write us to this email: [email protected] What if i already paid? Send your Bitcoin wallet ID to e-mail provided above. Attention! 1.Do not modify encrypted files. 2.Do not try decrypt your data using third party software, it may cause pernament data loss. Our Bitcoin address: 131fjhrB4wH8j6adZXudp1Wn23pR33tpAh
Wallets

131fjhrB4wH8j6adZXudp1Wn23pR33tpAh

URLs

http://mail2tor2zyjdctd.onion/

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 1 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 18 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Interacts with shadow copies 2 TTPs 14 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LegionLocker3.0.exe
    "C:\Users\Admin\AppData\Local\Temp\LegionLocker3.0.exe"
    1⤵
    • Modifies extensions of user files
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WTHBNZD.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:188
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1280
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
        3⤵
        • Interacts with shadow copies
        PID:3280
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
        3⤵
        • Interacts with shadow copies
        PID:3120
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3968
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:2108
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:2924
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3900
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:2372
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:2488
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3704
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3976
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3032
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3724
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:992
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2872

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\WTHBNZD.bat

    MD5

    d2aba3e1af80edd77e206cd43cfd3129

    SHA1

    3116da65d097708fad63a3b73d1c39bffa94cb01

    SHA256

    8940135a58d28338ce4ea9b9933e6780507c56ab37a2f2e3a1a98c6564548a12

    SHA512

    0059bd4cc02c52a219a0a2e1836bf04c11e2693446648dd4d92a2f38ed060ecd6c0f835e542ff8cfef8903873c01b8de2b38ed6ed2131a131bdd17887c11d0ec

  • \??\c:\Users\Admin\Downloads\BackupBlock.xls.LGNLCKD

    MD5

    734d66be453dd14cd756d64a4da29331

    SHA1

    7bf5fb4318b1f567617718868bdd3a6f206d6792

    SHA256

    ff3204fd3329b77cc12bf4d402dfc46c7a6cd51f85551b3a9313b41103dd9148

    SHA512

    710f26997966b62d5c5dd6fa14144590de8d3bf5fa6cce6d3f9617b39ed4041350197afa43146457cc12e81b2dc7652c6c1edaf0518f528211804670662d816c

  • memory/188-121-0x0000000000000000-mapping.dmp

  • memory/992-138-0x0000000000000000-mapping.dmp

  • memory/1280-123-0x0000000000000000-mapping.dmp

  • memory/2108-129-0x0000000000000000-mapping.dmp

  • memory/2372-132-0x0000000000000000-mapping.dmp

  • memory/2488-133-0x0000000000000000-mapping.dmp

  • memory/2924-130-0x0000000000000000-mapping.dmp

  • memory/3032-136-0x0000000000000000-mapping.dmp

  • memory/3120-127-0x0000000000000000-mapping.dmp

  • memory/3156-120-0x0000000000C00000-0x0000000000C01000-memory.dmp

    Filesize

    4KB

  • memory/3156-125-0x00000000055D0000-0x0000000005ACE000-memory.dmp

    Filesize

    5.0MB

  • memory/3156-124-0x00000000055D0000-0x0000000005ACE000-memory.dmp

    Filesize

    5.0MB

  • memory/3156-119-0x00000000054A0000-0x00000000054A1000-memory.dmp

    Filesize

    4KB

  • memory/3156-118-0x0000000077540000-0x00000000776CE000-memory.dmp

    Filesize

    1.6MB

  • memory/3156-117-0x0000000005AD0000-0x0000000005AD1000-memory.dmp

    Filesize

    4KB

  • memory/3156-115-0x0000000001070000-0x0000000001071000-memory.dmp

    Filesize

    4KB

  • memory/3280-126-0x0000000000000000-mapping.dmp

  • memory/3704-134-0x0000000000000000-mapping.dmp

  • memory/3724-137-0x0000000000000000-mapping.dmp

  • memory/3900-131-0x0000000000000000-mapping.dmp

  • memory/3968-128-0x0000000000000000-mapping.dmp

  • memory/3976-135-0x0000000000000000-mapping.dmp