Analysis

  • max time kernel
    134s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2024 08:25

General

  • Target

    test3.zip

  • Size

    102KB

  • MD5

    0e325d00fd30af4577f7a1df57a67b3f

  • SHA1

    a3f86e3a702dba6582b967217e411af3b662d771

  • SHA256

    28664daf83a19ae6efd7caf9433600981fbb7c95025f473dc4e6099b603512a0

  • SHA512

    5802d619ffb5bba93183d2d1ccb25c516e13e6ed801b37737a8aafeeb3577c8a12bf36308eb57f6621e69e2589b82f1fd7d4c4b4b669c3df4622acae22faa1c7

  • SSDEEP

    3072:Wwa7KxzWhIKXRzJUGdje+7Yenbw85eNwnaYeW02aa:Wwa7NhIKYG0+EeHeSa912aa

Malware Config

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Rule to detect Lockbit 3.0 ransomware Windows payload 3 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 15 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 6 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\test3.zip
    1⤵
      PID:2936
    • C:\Program Files\7-Zip\7zG.exe
      "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\test3\" -spe -an -ai#7zMap21070:90:7zEvent3980
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2832
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\test3\nothing.txt
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:2408
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1500
      • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
        a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin -k LocalServiceNetworkRestricted -pass db66023ab2abcb9957fb01ed50cdfa6a CHECK_UI_LANGUAGE_FLAG
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 88
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2676
      • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
        a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin -k LocalServiceNetworkRestricted -pass db66023ab2abcb9957fb01ed50cdfa6a
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of WriteProcessMemory
        PID:2204
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2204 -s 88
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2404
      • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
        a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin -pass db66023ab2abcb9957fb01ed50cdfa6a
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of WriteProcessMemory
        PID:1648
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 88
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:1096
      • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
        a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 88
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2848
      • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe
        a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe -k LocalServiceNetworkRestricted -pass db66023ab2abcb9957fb01ed50cdfa6a
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of WriteProcessMemory
        PID:1204
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 88
          3⤵
          • Program crash
          PID:1992
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin
      1⤵
      • Modifies registry class
      PID:2016
    • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe
      "C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 88
        2⤵
        • Program crash
        PID:1876

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\test3\a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e.exe.bin

      Filesize

      162KB

      MD5

      03b14473eef5b7e38d9a5041c1af0a76

      SHA1

      371353e9564c58ae4722a03205ac84ab34383d8c

      SHA256

      a56b41a6023f828cccaaef470874571d169fdb8f683a75edd430fbd31a2c3f6e

      SHA512

      eb39446791d4cdbfcd13dfc3ee1902cbc80f946d177e53a2927ef1e53257113e904ae5b5711a5622769b45bfcb961cd9c33158ad9c1f5e1258ff91d8bc753615

    • C:\Users\Admin\AppData\Local\Temp\test3\nothing.txt

      Filesize

      96B

      MD5

      e3826f99bef4b2cb1e4b20f9293d782a

      SHA1

      a05ec35fb8ba27a5b34e7b0896f26c1496b53698

      SHA256

      980fc980881354923c7ef7c6737adf9bdf5e72d3cf8a12fa18c4d4eb38cdf7ae

      SHA512

      5028582211b5764fa87c3a83f9daed057149fc5dd08e327a10c62fda5bb52bc3385ec3971b37d75b6a85dcd4c6c2e1873f09ce310ad21763c5fe12f4efee168a

    • memory/2620-7-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/2620-12-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB