Resubmissions

15-02-2024 07:50

240215-jpn7escg92 10

15-02-2024 06:53

240215-hnmrjabc51 10

Analysis

  • max time kernel
    464s
  • max time network
    365s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15-02-2024 07:50

General

  • Target

    f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe

  • Size

    862KB

  • MD5

    af9ff037caca1f316e7d05db86dbd882

  • SHA1

    844e9b219aaecb26de4994a259f822500fb75ae1

  • SHA256

    f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae

  • SHA512

    e3cc5ca9fa5c4f23dd97389f86af276798ae4db4a68d38812fce25549e7f18e41d2bfc9fa72d3110a54ac88038cb27d3210bd099c6c3975befe5b36a569cd494

  • SSDEEP

    24576:DxAf2NuubB6RWspgjuwu7pl4Ha+UmxJH+Q1F:dAfSrWW4g+7Ht+UmxJeW

Malware Config

Extracted

Path

C:\Program Files\DVD Maker\de-DE\Restore-My-Files.txt

Ransom Note
LockBit 2.0 Ransomware Your data are stolen and encrypted The data will be published on TOR website http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion and https://bigblog.at if you do not pay the ransom You can contact us and decrypt one file for free on these TOR sites http://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion OR https://decoding.at Decryption ID: F4B0B5EF9DC08D87BAB77FC4EBAC01C5
URLs

http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion

https://bigblog.at

http://lockbitsup4yezcd5enk5unncx3zcy7kw6wllyqmiyhvanjj352jayid.onion

http://lockbitsap2oaqhcun3syvbqt6n5nzt7fqosc6jdlmsfleu3ka4k2did.onion

https://decoding.at

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 22 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe
    "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1412
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2552
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:3048
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1144
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C ping 127.0.0.7 -n 3 > Nul & fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe" & Del /f /q "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2516
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.7 -n 3
        3⤵
        • Runs ping.exe
        PID:2800
      • C:\Windows\SysWOW64\fsutil.exe
        fsutil file setZeroData offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\f3e891a2a39dd948cd85e1c8335a83e640d0987dbd48c16001a02f6b7c1733ae.exe"
        3⤵
          PID:1652
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2192
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:2580
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0xc4
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2816
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\Restore-My-Files.txt
        1⤵
          PID:472

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\DVD Maker\de-DE\Restore-My-Files.txt

          Filesize

          512B

          MD5

          87c30fd22819fc3b874011e24587a2fe

          SHA1

          1ab992f48c417778e87052b0f94c3ce3199dcf41

          SHA256

          7d8b94c02b4cc59155cfb06e9edc09a7c1ef7b9ea6e6a26f64ac45bee222eb31

          SHA512

          c17d41bdf19066efdfa7a78d7d036c40029cc865428f9e2c20927f6ecf5194928897db75005b1b23ab824dbd0383ff8212486beec1be68311b457da5a8ac16b5